All Wiring Diagrams for GMC Sierra Classic HD 2007 2500 model

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 3) for GMC Sierra Classic HD 2007 2500

List of elements for Automatic A/C Wiring Diagram (1 of 3) for GMC Sierra Classic HD 2007 2500:

• (diesel)
• (gasoline)
• 5v ref
• A/c comp cl rly ctrl
• A/c comp fuse 10a
• A/c compressor clutch
• A/c compressor clutch relay
• A/c ind
• A/c low pressure switch (right side of accumulator)
• A/c on
• A/c recirc
• A/c ref pre sens sig
• A/c refrigerant pressure sensor (on high pressure hose)
• A10
• A11
• A12
• A5 c1
• Air temperature sensor (lower left) (lower left floor duct assembly)
• Air temperature sensor (lower right) (bottom of hvac module)
• Air temperature sensor (upper left) (below dash trim panel)
• Air temperature sensor (upper right) (below dash trim panel)
• Amb air temp sig
• Ambient air temperature sensor (in right front bumper filler assembly)
• Auto
• B c5
• B(+)
• B10
• B11
• B12
• Blower motor (right side of dash)
• Blower motor control processor (behind right side of dash)
• Blower speed ctrl
• Blwr fuse 40a
• C4 e
• C5 c1
• Class 2 ser data
• Class 2 serial data
• D red
• Fan dn
• Fan up
• Frt def
• G104 (on left rear of engine block)
• G200 (near right "a" pillar)
• G203 (near left "a" pillar)
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• Hvac 1 fuse 10a
• Hvac control module (behind center of dash)
• Hvac/ ecas fuse 10a
• I/p fuse block (lower left side of dash)
• I/p junction block (lower right side of dash)
• I/p relay block (near left kick panel)
• Ign 3
• Ign e fuse 10a
• Inside air temp sig
• Inside air temperature sensor assembly (in headliner above driver)
• Inst lamp dim ctrl
• Interior lights system
• Left temp control
• Lo lt air temp sig
• Lo press sens sig
• Lo rt air temp sig
• Logic
• Low ref
• Lt temp door ctrl
• Lt tmp door po sig
• Mode
• Mode door ctrl
• Mode door po sig
• Off
• Powertrain control module or engine control module (diesel) (left front of engine compt)
• Recir
• Recir door ctrl
• Recirc door po sig
• Red
• Right i/p fuse block (lower right side of dash)
• Right temp control
• Rt temp door ctrl
• Rt tmp door po sig
• S102 (in engine harness)
• S218 (in i/p harn)
• S345 (in headliner harness)
• Sp205 (in i/p harn)
• Speed ctrl
• Tan
• Temp sen assy ctrl
• Underhood fuse block (left side of engine compt)
• Up lt air temp sig
• Up rt air temp sig

Automatic A/C Wiring Diagram (2 of 3) for GMC Sierra Classic HD 2007 2500

List of elements for Automatic A/C Wiring Diagram (2 of 3) for GMC Sierra Classic HD 2007 2500:

• Air temperature actuator (left) (bottom of hvac module)
• Air temperature actuator (right) (top of hvac module)
• Ambient light sens lo ref
• Ambient light sens sig
• Ambient light sensor
• Ambient light/sunload sensor assembly (top center of dash)
• B12
• Body control module (lower left side of dash, below steering column)
• Class 2 serial data
• Drvr sunload sensor sig
• I/p junction block (lower right side of dash)
• Logic
• Mode actuator (left side of hvac module)
• Pass sunload sensor sig
• Recirculation actuator (top center of hvac module)
• Sunload sensor (left)
• Sunload sensor (right)
• Tan

Automatic A/C Wiring Diagram (3 of 3) for GMC Sierra Classic HD 2007 2500

List of elements for Automatic A/C Wiring Diagram (3 of 3) for GMC Sierra Classic HD 2007 2500:

• (in forward lamp harness) s166
• 10 series
• Cool/ fan relay 1
• Cool/ fan relay 2
• Cool/ fan relay 3
• Cool/fan fuse 10a
• Cool/fan fuse 40a
• Engine coolant temperature (ect) sensor (on left cylinder head)
• G115 (on lower right radiator support)
• Hot at all times
• Left cooling fan
• Powertrain control module (pcm)
• Right cooling fan
• Underhood cooling fan fuse block (left side of engine compt)

Compressor Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Compressor Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (diesel)
• (gasoline)
• 5v ref
• A/c comp cl rly ctrl
• A/c comp fuse 10a
• A/c compressor clutch
• A/c compressor clutch relay
• A/c low pressure switch (right side of accumulator)
• A/c on switch
• A/c ref pre sens sig
• A/c refrigerant pressure sensor (on high pressure hose)
• A12
• B11
• Class 2 ser data
• Class 2 serial data
• G104 (on left rear of engine block)
• Hot at all times
• Hot in run or start
• Hvac control module (behind center of dash)
• Ign e fuse 10a
• Lo press sens sig
• Logic
• Low ref
• Powertrain control module or engine control module (diesel) (left front of engine compt)
• Sp205 (in i/p harn)
• Underhood fuse block (left side of engine compartment)

Heater Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Heater Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt)
• (right side of engine compt)
• Aux htr pump fuse 10a
• Aux htr pump relay
• Auxiliary water pump
• B c5
• Blower fuse 40a
• Blower motor (under right side of dash)
• Blower motor control switch
• Blower motor relay
• Blower motor resistor assembly (on hvac module, near blower motor)
• Computer data lines system
• G104 (on left rear of engine block)
• G200 (near right "a" pillar)
• Hot at all times
• Hot in run
• Htr a/c fuse 30a
• Hvac control module (behind center of dash)
• Hybrid control module (hcm)
• Hybrid only
• I/p fuse block (lower left side of dash)
• I/p junction fuse block (lower right side of dash)
• Ign b fuse 40a
• Pnk
• Power distribution system
• Pwr maint fuse 10a
• Pwr maint relay
• Red
• S108
• S113
• S114
• S115
• Secondary underhood fuse block (left side of engine compt) (hybrid)
• Stud #1 fuse 40a
• Tan
• Underhood fuse block (left side of engine compt)

Manual A/C Wiring Diagram (1 of 3) for GMC Sierra Classic HD 2007 2500

List of elements for Manual A/C Wiring Diagram (1 of 3) for GMC Sierra Classic HD 2007 2500:

• (diesel)
• (gasoline)
• 5v ref
• A/c comp cl rly ctrl
• A/c comp fuse 10a
• A/c compressor clutch
• A/c compressor clutch relay
• A/c low pressure switch (right side of accumulator)
• A/c on indic
• A/c on switch
• A/c ref pre sens sig
• A/c refrigerant pressure sensor (on high pressure hose)
• A10
• A11
• A12
• A5 c1
• B c5
• B(+)
• B10
• B11
• B12
• Blower fuse 40a
• Blower motor (under right side of dash)
• Blower motor control switch
• Blower motor relay
• Blower motor resistor assembly (on hvac module, near blower motor)
• Class 2 ser data
• Class 2 serial data
• G104 (on left rear of engine block)
• G200 (near right "a" pillar)
• G203 (near left "a" pillar)
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• Htr a/c fuse 30a
• Hvac 1 fuse 10a
• Hvac control module (behind center of dash)
• Hvac/ ecas fuse 10a
• I/p fuse block (lower left side of dash)
• I/p junction block (lower right side of dash)
• I/p relay block (left side of dash)
• Ign 3
• Ign e fuse 10a
• Indic
• Inst lamp dim ctrl
• Interior lights system
• Left temp control
• Lo press sens sig
• Logic
• Low ref
• Lt temp door ctrl
• Lt tmp door po sig
• Mode control
• Mode door ctrl
• Mode door po sig
• Off blow mt ctrl
• Powertrain control module or engine control module (diesel) (left front of engine compt)
• Recir door ctrl
• Recirc
• Recirc switch
• Red
• Right temp control
• Rt temp door ctrl
• Rt tmp door po sig
• S102 (in engine harness)
• Sp205 (in i/p harn)
• Tan
• Underhood fuse block (left side of engine compartment)

Manual A/C Wiring Diagram (2 of 3) for GMC Sierra Classic HD 2007 2500

List of elements for Manual A/C Wiring Diagram (2 of 3) for GMC Sierra Classic HD 2007 2500:

• (not used)
• Air temperature actuator (right) (top of hvac module)
• B12
• Body control module (lower left side of dash, below steering column)
• Class 2 serial data
• G200 (near right "a" pillar)
• I/p junction block (lower right side of dash)
• Left air temperature actuator (bottom of hvac module)
• Logic
• Mode actuator (left side of hvac module)
• Recirculation actuator (top center of hvac module)
• Tan

Manual A/C Wiring Diagram (3 of 3) for GMC Sierra Classic HD 2007 2500

List of elements for Manual A/C Wiring Diagram (3 of 3) for GMC Sierra Classic HD 2007 2500:

• (in forward lamp harness) s166
• 10 series
• Cool/ fan relay 1
• Cool/ fan relay 2
• Cool/ fan relay 3
• Cool/fan fuse 10a
• Cool/fan fuse 40a
• Engine coolant temperature (ect) sensor (on left cylinder head)
• G115 (on lower right radiator support)
• Hot at all times
• Left cooling fan
• Powertrain control module (pcm)
• Right cooling fan
• Underhood cooling fan fuse block (left side of engine compt)

ANTI-LOCK BRAKES

Anti-Lock Brakes Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Anti-Lock Brakes Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (diesel)
• (gas)
• (gas: left rear of eng block) (diesel: right front of eng block)
• (in i/p harness) sp205
• 3.6k ohms
• A10
• Abs fuse 60a
• Abs ind
• Allison
• B10
• Brake fluid level sw in
• Brake fluid level switch (on left side of brake fluid reservoir)
• Brake fuse 10a
• Brake ind
• Brake input
• C12
• C2 b7
• C5 c1
• C9 a
• Clutch start switch (m/t) (top of clutch clutch assy)
• Cpp sw sig
• Data link connector (dlc) (below steering column)
• Del torque sig
• Electronic brake control module (ebcm) (on left side of inner frame)
• Except allison
• Except seo
• Front axle act/sw input
• G104
• G110 (left front body mount)
• G203 (near left "a" pillar)
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse block (on lower left side of dash)
• Ign e fuse 10a
• Ignition
• Instrument planel cluster
• Interior lights system
• Left front sensor (+)
• Left front sensor (-)
• Left front wheel speed sensor
• Logic
• Nca
• Pnk
• Powertrain or engine control module (pcm or ecm) (on left front of eng compt)
• Red
• Req torque sig
• Right front sensor (+)
• Right front sensor (-)
• Right front wheel speed sensor
• S102
• S213
• Seo
• Seo ign fuse 10a
• Serial data
• Stoplamp switch (on top of brake pedal bracket)
• Tan
• Tcc brake sw
• Traction control ind (if equipped)
• Traction control switch (if equipped)
• Transfer case shift control module (behind headlamp switch)
• Transmission control module (tcm) (left front of eng compt)
• Transmissions system (allison)
• Transmissions system (transfer case circuit)
• Underhood fuse block (at left side of engine compt)
• Vehicle speed sensor (vss) (nv 4500: left side of transmission, nvg 261-np2: left side of transfer case, nvg 263-np1: left rear of transfer case, zf s6-650: left rear of transmission, 4l60-e: right rear of transmission)
• Vss high
• Vss input
• Vss low
• Vss output

Anti-Lock Brakes Wiring Diagram, with Rear Disc Brakes for GMC Sierra Classic HD 2007 2500

List of elements for Anti-Lock Brakes Wiring Diagram, with Rear Disc Brakes for GMC Sierra Classic HD 2007 2500:

• 3.6k ohms
• Abs fuse 60a
• Abs ind
• Brake fluid level sw in
• Brake fuse 10a
• Brake in
• Brake ind
• Brake input
• Brake pressure differential switch (under master cylinder)
• C12
• C2 b7
• C5 c1
• C9 a
• Clutch start switch (m/t) (top of clutch clutch assy)
• Data link connector (dlc) (below steering column)
• Del torque
• Delivered torque
• Electronic brake control module (ebcm) (on left side of inner frame)
• Except seo
• G104 (left rear of engine block)
• G110 (left front body mount)
• G203 (near left "a" pillar)
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse block (on lower left side of dash)
• Ign e fuse 10a
• Ignition
• Instrument panel cluster
• Interior lights system
• Left front sensor (+)
• Left front sensor (-)
• Left front wheel speed sensor
• Logic
• Nca
• Pnk
• Powertrain control module (pcm) (on left front of engine compt)
• Red
• Req torque
• Requested torque
• Right front sensor (+)
• Right front sensor (-)
• Right front wheel speed sensor
• S102
• S213
• Seo
• Seo ign fuse 10a
• Serial data
• Sp205 (in i/p harness)
• Stoplamp switch (on top of brake pedal bracket)
• Tan
• Tcc brake sw
• Trac sw input
• Traction control ind (if equipped)
• Traction control switch (if equipped)
• Transfer case shift control module (behind headlamp switch)
• Transmissions system (transfer case circuit)
• Underhood fuse block (at left side of eng compt)
• Underhood fuse block (at left side of engine compt)
• Vehicle speed sensor (vss) (nv 4500: left side of transmission, nvg 261-np2: left side of transfer case, nvg 263-np1: left rear of transfer case, zf s6-650: left rear of transmission, 4l60-e: right rear of transmission)
• Vss high
• Vss input
• Vss low
• Vss out

Anti-Lock Brakes Wiring Diagram, with Rear Drum Brakes for GMC Sierra Classic HD 2007 2500

List of elements for Anti-Lock Brakes Wiring Diagram, with Rear Drum Brakes for GMC Sierra Classic HD 2007 2500:

• (diesel)
• (gas)
• (gas: left rear of eng block) (diesel: right front of eng block)
• (in i/p harness) sp205
• 3.6k ohms
• A10
• Abs fuse 60a
• Abs ind
• Allison
• B10
• Brake fluid level sw in
• Brake fluid level switch (on left side of brake fluid reservoir)
• Brake fuse 10a
• Brake ind
• Brake input
• C12
• C2 b7
• C5 c1
• C9 a
• Clutch start switch (m/t) (top of clutch clutch assy)
• Cpp sw sig
• Data link connector (dlc) (below steering column)
• Del torque sig
• Electronic brake control module (ebcm) (on left side of inner frame)
• Except allison
• Except seo
• Front axle act/sw input
• G104
• G110 (left front body mount)
• G203 (near left "a" pillar)
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse block (on lower left side of dash)
• Ign e fuse 10a
• Ignition
• Instrument planel cluster
• Interior lights system
• Left front sensor (+)
• Left front sensor (-)
• Left front wheel speed sensor
• Logic
• Nca
• Pnk
• Powertrain or engine control module (pcm or ecm) (on left front of eng compt)
• Red
• Req torque sig
• Right front sensor (+)
• Right front sensor (-)
• Right front wheel speed sensor
• S102
• S213
• Seo
• Seo ign fuse 10a
• Serial data
• Stoplamp switch (on top of brake pedal bracket)
• Tan
• Tcc brake sw
• Traction control ind (if equipped)
• Traction control switch (if equipped)
• Transfer case shift control module (behind headlamp switch)
• Transmission control module (tcm) (left front of eng compt)
• Transmissions system (allison)
• Transmissions system (transfer case circuit)
• Underhood fuse block (at left side of engine compt)
• Vehicle speed sensor (vss) (nv 4500: left side of transmission, nvg 261-np2: left side of transfer case, nvg 263-np1: left rear of transfer case, zf s6-650: left rear of transmission, 4l60-e: right rear of transmission)
• Vss high
• Vss input
• Vss low
• Vss output

Supplemental Brake Assist Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Supplemental Brake Assist Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• 6.0l
• C1 f5
• C5 c1
• Eng on sig
• Engine on signal
• Except 6.0l
• G200 (behind right side of dash, near right "a" pillar)
• G203 (near left "a" pillar)
• Generator
• Generator battery control module
• Grd
• Hot in run or start
• I/p relay block (near left kick panel)
• Ign 1 volt
• Instrument cluster system
• Pnk
• Pressure differential switch
• S202
• Sba fuse 15a
• Underhood fuse block (at left side of engine compt)
• Vacuum pump motor
• Vehicle spd sig

ANTI-THEFT

Forced Entry Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Forced Entry Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (inside driver door)
• (inside right front passenger door)
• (lower left side of dash, near steering column)
• A12
• Ajar sw
• All times
• B12
• Base
• Battery
• Body control module
• Class 2 data
• D12
• Door ajar sw sig
• Door sw lo ref
• Driver door latch assembly (rear of driver's door)
• Driver door module
• Exterior lights system
• Front passenger door latch assembly (rear of right front door)
• Front passenger door module
• G200 (behind right side of dash)
• G203 (near left "a" pillar)
• G305 (bottom of left "b" pillar)
• G306 (bottom of right "b" pillar)
• Ground
• Headlights ctrl
• Headlights system
• Horn rly ctrl
• Horns system
• Hot at
• I/p fuse block (lower left side of dash)
• I/p junction block (lower right side of dash)
• I/p junction block (right side of dash, behind panel)
• I/p relay block (near left kick panel)
• Instrument panel cluster (ipc)
• Key sw
• Key sw lo ref
• Key sw sig
• Left rear door latch assembly (crew cab) (rear or left rear door)
• Lf door ajar sw
• Logic
• Lr door ajar sw
• Pk lamp rel
• Rf door ajar sw
• Right rear door latch assembly (crew cab) (rear or right rear door)
• Rr door ajar sw
• S202
• Security indicator
• Serial data
• Splice pack sp205 (in i/p harness)
• Tan
• Tbc batt fuse 10a
• Underhood fuse block (left side of engine compt)
• Uplevel

Passlock Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Passlock Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• 12v reference
• A11
• A12
• B12
• Battery
• Body control module (lower left side of dash, near steering column)
• Class 2 serial data
• D12
• Data
• Data link connector (under left side of dash)
• Diesel
• Electronic power steering system
• G203 (near left "a" pillar)
• Gas
• Ground
• Hall effect sensor
• Hot at all times
• Hot in run & start
• Hybrid
• I/p relay block (near left kick panel)
• Ign
• Ign 1 voltage
• Ign sw sig
• Ignition key alarm switch (on steering column)
• Instrument panel cluster
• Low reference
• Passlock sensor (on steering column)
• Pnk
• Powertrain control module (gasoline) engine control module (diesel) (left front of eng compt)
• S217
• S241 (in steering column harness)
• Sec sens sig
• Security indicator
• Security sensor
• Serial data
• Splice pack sp205 (in i/p harn)
• Tamper sensor
• Tbc batt fuse 10a
• Tbc ign 1 fuse 10a
• Underhood fuse block (left side of engine compt)

BODY CONTROL MODULES

Body Control Modules Wiring Diagram (1 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for Body Control Modules Wiring Diagram (1 of 2) for GMC Sierra Classic HD 2007 2500:

• (base)
• (upper level)
• 12 volt ref
• 5 volt ref
• A10
• A11
• A12
• Air conditioning system
• Ambient light sens sig
• Anti-theft system
• B10
• B11
• B12
• Battery +
• Body control module (on lower left side of dash, below steering column)
• Class 2 serial data
• Computer data lines system
• D12
• Defogger system
• Dimming sw sig
• Door locks system
• Driver door unlock rly ctrl
• Driver sunload sens sig
• Drl off ind
• Drl relay ctrl
• Drl sw sig
• E11
• E12
• Electronic power steering system
• Exterior lights system
• Fog light relay ctrl
• Front fog lamp sw sig
• G203 (behind left side of dash, near "a" pillar)
• Ground
• Headlamp dimmer sw sig
• Headlamp high beam relay ctrl
• Headlamp low beam relay ctrl
• Headlamp on ind ctrl
• Headlights system
• Horn rly ctrl
• Horns system
• Hot at all times
• I/p fuse block (lower left side of dash)
• I/p lamp dimming ctrl
• I/p relay block (near left kick panel)
• Interior lamp defeat sw sig
• Interior lights system
• Led dimming sig
• Low ref
• Park lamp relay ctrl
• Park lamp sw on sig
• Pass door lock sw lock ctrl
• Pass door lock sw unlock ctrl
• Passenger sunload sens sig
• Pnk
• Power tops system
• Rear defog rly ctrl
• Rear dr lock rly ctrl
• Rear dr unlock rly ctrl
• Red
• Remote radio ctrl sig
• Security system sens sig
• Sound system
• Steering wheel position sen sig
• Tbc 2a fuse 15a
• Tbc 2c fuse 15a
• Tbc batt fuse 10a
• Tow/haul sw sig
• Transmissions system
• Underhood fuse block (left side of engine compt)
• W/w mtr prk sw sig
• Wiper/washer system

Body Control Modules Wiring Diagram (2 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for Body Control Modules Wiring Diagram (2 of 2) for GMC Sierra Classic HD 2007 2500:

• (base)
• (crew cab)
• (lower left side of dash)
• (up level)
• A10
• A11
• Accessory volt
• Air conditioning system
• B11
• B12
• Backup lamp sig
• Battery +
• Body control module (on lower left side of dash, below steering column)
• Cargo lamp low ctrl
• Courtesy lamps on sig
• Door lock ctrl
• Door locks system
• Door unlock ctrl
• Exterior lights system
• Headlamp sw flash to pass sig
• Headlamp sw headlamp on sig
• Headlights system
• Hot at all times
• Hot in run & acc
• Hot in run & start
• Hot in run, start & acc
• I/p fuse block
• I/p lamps dimmer sw low ref
• Ignition 0 volt
• Ignition 1 volt
• Interior lights system
• Key in ignition sw sig
• Left front door ajar sw sig
• Left rear door ajar sw sig
• Low ref
• Park brake sw sig
• Park brake switch (part of park brake assembly)
• Pnk
• Power window lockout lr sig
• Power window lockout rr sig
• Power window sw lr down sig
• Power window sw lr up sig
• Power window sw rr down sig
• Power window sw rr up sig
• Power windows system
• Right front door ajar sw sig
• Right rear door ajar sw sig
• Tbc 2b fuse 15a
• Tbc accy fuse 10a
• Tbc ign 0 fuse 10a
• Tbc ign 1 fuse 10a
• Underhood fuse block (left side of eng compt)
• Warnings system

COMPUTER DATA LINES

Computer Data Lines Wiring Diagram (1 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for Computer Data Lines Wiring Diagram (1 of 2) for GMC Sierra Classic HD 2007 2500:

• (at center of dash) radio
• (hybrid)
• (not used)
• 8600 gvw or less w/ disc brakes
• > 8600 gvw or w/rear drum brakes
• Air conditioning system
• Audio amplifier (w/ luxury package) (under rear of center console)
• B10
• B11
• B12
• Base or uplevel
• Body control module (on lower left side of dash, below steering column)
• Cig ltr fuse 15a
• Class 2 serial data
• Data link connector (dlc) (under left side of dash, below steering column)
• Diesel
• Digital radio receiver (behind right side of dash)
• Driver's door module (ddm) (in left front door)
• Electronic brake control module (ebcm) (on left side of inner frame)
• Front passenger door module (pdm) (in right front door)
• G200 (near right "a" pillar)
• G203 (near left "a" pillar)
• Gas
• Generator battery control module (left front corner of engine compt)
• Hot at all times
• Hvac control module (behind center of dash)
• Hybrid control module (left side of engine compt)
• I/p fuse block (under left side of dash)
• I/p junction block (under right side of dash)
• I/p relay block (near left kick panel)
• Inflatable restraint sensing/diagnostic module (under left front seat)
• Instrument panel cluster (ipc)
• Luxury
• Memory seat module (underside of driver seat)
• Pnk
• Power distribution system
• Powertrain control module (pcm)/engine control module (ecm) (on left front of engine compt)
• Rear seat audio (rsa) controller (under rear of center console)
• Rear seat entertainment (rse) assembly (at center of headliner)
• Remote playback device-cd player (center of dash, below radio)
• S202 (in i/p harness)
• Splice pack sp205 (in i/p harness)
• Splice pack sp207 (behind left kick panel)
• Tan
• Tire pressure monitor (tpm) module (behind dash above brake pedal assembly)
• Transfer case shift control module (behind headlamp switch)
• Transmission control module (at left front of engine compt)
• Underhood fuse block (at left side of engine compt)
• Vehicle communication interface module (vcim) (behind passenger air bag module)

Computer Data Lines Wiring Diagram (2 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for Computer Data Lines Wiring Diagram (2 of 2) for GMC Sierra Classic HD 2007 2500:

• 1-car
• 2-car
• 6.6l
• 8.1l
• A/t
• C340
• Electro-hydraulic power steering (ehps) module
• Energy storage box (esb)
• Energy storage control module (escm)
• Engine control module (ecm) (left front of engine compt)
• Except hybrid (8.1l & 6.6l)
• Glow plug control module (gpcm)
• Hi spd gmlan serial data +
• Hi spd gmlan serial data -
• High speed gmlan serial data bus +
• High speed gmlan serial data bus -
• Hybrid
• Hybrid control module (hcm) (left side of engine compt)
• M/t
• Powertrain control module (pcm) (left front of engine compt)
• S122 (in engine harness approx 9 cm from ecm connector)
• S123 (in engine harness approx 20 cm from ecm connector)
• Starter/ generator control module (sgcm) (right rear of engine compt)
• Tan
• Transmission control module (8.1l) (left front of engine compt)
• Transmission control module (diesel) (left front of engine compt)

COOLING FAN

Cooling Fan Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Cooling Fan Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (in forward lamp harness) s166
• (left front of engine compt)
• 1-ntc1
• 1-ntc2
• 1-ntc3
• 10 series
• 2-ntc1
• 2-ntc2
• 2-ntc3
• 3-car
• 7-car
• 8-car
• B(+)
• Battery temperature sensor 1
• Battery temperature sensor 2
• Battery temperature sensor 3
• C340
• Computer data lines system
• Cool/ fan relay 1
• Cool/ fan relay 2
• Cool/ fan relay 3
• Cool/fan fuse 10a
• Cool/fan fuse 40a
• Energy storage box (esb) (under rear seat)
• Energy storage box (esb) cooling fan
• Energy storage control module (escm)
• Engine controls system
• Engine coolant temperature (ect) sensor (on left cylinder head)
• Esb fan (+)
• Esb fan (-)
• Escm fuse 20a
• Fan spd sig
• G115 (on lower right radiator support)
• G310 (in energy storage box)
• Gnd
• Hcm-1 fuse 10a
• Hot at all times
• Hot in acc/ run/start
• Hot in run/start
• Hybrid
• I/p fuse block (left side of dash)
• Ign 0 fuse 10a
• Ign0
• Ign1
• Left cooling fan
• Low ref
• Pnk
• Power distribution system
• Powertrain control module (pcm)
• Red
• Right cooling fan
• S115 (17.5 cm from starter/generator control module)
• S116 (4 cm from underhood secondary fuse block breakout)
• Secondary underhood fuse block (left side of engine compt)
• Ser data (+)
• Ser data (-)
• Stud 1 fuse 40a
• Tan
• Temp sens sig1
• Temp sens sig2
• Temp sens sig3
• Underhood cooling fan fuse block (left side of engine compt)
• Underhood fuse block (left side of engine compt)

Cooling Pump Wiring Diagram, Hybrid for GMC Sierra Classic HD 2007 2500

List of elements for Cooling Pump Wiring Diagram, Hybrid for GMC Sierra Classic HD 2007 2500:

• (8 cm from underhood secondary fuse block breakout)
• Computer data lines system
• Cool pump fuse 15a
• G100 (lower left radiator support)
• Hot at all times
• Ign b fuse 40a
• Nca
• Pnk
• Power distribution system
• Red
• S114
• Secondary underhood fuse block (left side of engine compt)
• Sgcm cool pmp/fan relay
• Starter/generator control module (sgcm) (right rear of engine compt)
• Starter/generator control module coolant pump (on radiator core support)
• Tan
• Underhood fuse block (left side of engine compt)

CRUISE CONTROL

4.3L VIN X

4.3L VIN X, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for 4.3L VIN X, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• A/t
• A10
• Anti- lock brakes system
• Anti-lock brakes system
• Brake fuse 10a
• Class 2 data
• Clutch pedal position switch (top of clutch pedal)
• Computer data lines system
• Cruise control module (left rear of engine compt, on firewall)
• Cruise control on/off switch
• Cruise engage out
• Cruise fuse 10a
• Cruise ind
• Cruise on sw sig
• Cruise rel sig
• Exterior lights system
• F12
• G203 (near left "a" pillar)
• Ground
• Hot at all times
• Hot in run
• I/p fuse block (on lower left side of dash)
• I/p relay block
• Ign
• Ign3
• Instrument panel cluster
• M/t
• Nca
• Off
• Powertrain control module (left front of engine compt)
• Radio
• Resume/ accel
• Resume/accel
• Resume/accel sig
• Serial data
• Set/ coast
• Set/coast sw sig
• Starting/ charging system
• Stop lps fuse 25a
• Stoplamp sply volt
• Stoplamp switch (top of brake pedal)
• Turn signal multifunction switch
• Underhood fuse block (left side of engine compt)
• Veh stop fuse 15a
• Vehicle speed sensor (vss) (2wd: rear of transmission) (4wd: left side of transfer case)
• Vss high
• Vss in
• Vss low
• Vss out cruise engage in

4.8L VIN V

4.8L VIN V, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for 4.8L VIN V, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• 5v ref
• A10
• Acceleration pedal position sensor (behind accelerator pedal)
• Anti-lock brakes system
• App sensor 1 sig
• App sensor 2 sig
• Brake fuse 10a
• Class 2 data
• Clutch pedal postion (cpp) switch
• Computer data lines system
• Cpp sw
• Cruise control on/off switch
• Cruise fuse 10a
• Cruise ind
• Cruise on sw sig
• Etc/ecm fuse 15a
• F12
• G104 (left rear of engine)
• Ground
• Hot at all times
• Hot in run
• Hot in run & start
• I/p fuse block (on lower left side of dash)
• I/p relay block
• Ign
• Ign volt
• Instrument panel cluster
• Low ref
• Nca
• Off
• Pnk
• Powertrain control module (left front of engine compt)
• Resume/ accel
• Resume/accel
• Resume/accel sig
• S102
• S207 (w/ pto) (in i/p harn)
• S224 (w/ pto) (in i/p harn)
• Serial data
• Set/ coast
• Set/coast sig
• Starting/ charging system
• Stop lmp sply volt
• Stop lps fuse 25a
• Stoplamp switch (top of brake pedal)
• Tac motor cntrl 1
• Tac motor cntrl 2
• Tan
• Tcc brk sw
• Throttle actuator control module (left rear of engine compt)
• Throttle body
• Tp sensor 1 sig
• Tp sensor 2 sig
• Turn signal multifunction switch
• Under- hood fuse block
• Underhood fuse block (near battery)
• Veh stop fuse 15a
• Vehicle speed sensor (vss) (2wd: left side of transmission) (4wd: left side of transfer case)
• Vss
• Vss high
• Vss low

5.3L VIN B

5.3L VIN B, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN B, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• 5v ref
• A10
• Acceleration pedal position sensor (behind accelerator pedal)
• Anti-lock brakes system
• App sensor 1 sig
• App sensor 2 sig
• Brake fuse 10a
• Class 2 data
• Clutch pedal postion (cpp) switch
• Computer data lines system
• Cpp sw
• Cruise control on/off switch
• Cruise fuse 10a
• Cruise ind
• Cruise on sw sig
• Etc/ecm fuse 15a
• F12
• G104 (left rear of engine)
• Ground
• Hot at all times
• Hot in run
• Hot in run & start
• I/p fuse block (on lower left side of dash)
• I/p relay block
• Ign
• Ign volt
• Instrument panel cluster
• Low ref
• Nca
• Off
• Pnk
• Powertrain control module (left front of engine compt)
• Resume/ accel
• Resume/accel
• Resume/accel sig
• S102
• S207 (w/ pto) (in i/p harn)
• S224 (w/ pto) (in i/p harn)
• Serial data
• Set/ coast
• Set/coast sig
• Starting/ charging system
• Stop lmp sply volt
• Stop lps fuse 25a
• Stoplamp switch (top of brake pedal)
• Tac motor cntrl 1
• Tac motor cntrl 2
• Tan
• Tcc brk sw
• Throttle actuator control module (left rear of engine compt)
• Throttle body
• Tp sensor 1 sig
• Tp sensor 2 sig
• Turn signal multifunction switch
• Under- hood fuse block
• Underhood fuse block (near battery)
• Veh stop fuse 15a
• Vehicle speed sensor (vss) (2wd: left side of transmission) (4wd: left side of transfer case)
• Vss
• Vss high
• Vss low

5.3L VIN T

5.3L VIN T, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• 5v ref
• A10
• Acceleration pedal position sensor (behind accelerator pedal)
• Anti-lock brakes system
• App sensor 1 sig
• App sensor 2 sig
• Brake fuse 10a
• Class 2 data
• Clutch pedal postion (cpp) switch
• Computer data lines system
• Cpp sw
• Cruise control on/off switch
• Cruise fuse 10a
• Cruise ind
• Cruise on sw sig
• Etc/ecm fuse 15a
• F12
• G104 (left rear of engine)
• Ground
• Hot at all times
• Hot in run
• Hot in run & start
• I/p fuse block (on lower left side of dash)
• I/p relay block
• Ign
• Ign volt
• Instrument panel cluster
• Low ref
• Nca
• Off
• Pnk
• Powertrain control module (left front of engine compt)
• Resume/ accel
• Resume/accel
• Resume/accel sig
• S102
• S207 (w/ pto) (in i/p harn)
• S224 (w/ pto) (in i/p harn)
• Serial data
• Set/ coast
• Set/coast sig
• Starting/ charging system
• Stop lmp sply volt
• Stop lps fuse 25a
• Stoplamp switch (top of brake pedal)
• Tac motor cntrl 1
• Tac motor cntrl 2
• Tan
• Tcc brk sw
• Throttle actuator control module (left rear of engine compt)
• Throttle body
• Tp sensor 1 sig
• Tp sensor 2 sig
• Turn signal multifunction switch
• Under- hood fuse block
• Underhood fuse block (near battery)
• Veh stop fuse 15a
• Vehicle speed sensor (vss) (2wd: left side of transmission) (4wd: left side of transfer case)
• Vss
• Vss high
• Vss low

5.3L VIN Z

5.3L VIN Z, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN Z, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• 5v ref
• A10
• Acceleration pedal position sensor (behind accelerator pedal)
• Anti-lock brakes system
• App sensor 1 sig
• App sensor 2 sig
• Brake fuse 10a
• Class 2 data
• Clutch pedal postion (cpp) switch
• Computer data lines system
• Cpp sw
• Cruise control on/off switch
• Cruise fuse 10a
• Cruise ind
• Cruise on sw sig
• Etc/ecm fuse 15a
• F12
• G104 (left rear of engine)
• Ground
• Hot at all times
• Hot in run
• Hot in run & start
• I/p fuse block (on lower left side of dash)
• I/p relay block
• Ign
• Ign volt
• Instrument panel cluster
• Low ref
• Nca
• Off
• Pnk
• Powertrain control module (left front of engine compt)
• Resume/ accel
• Resume/accel
• Resume/accel sig
• S102
• S207 (w/ pto) (in i/p harn)
• S224 (w/ pto) (in i/p harn)
• Serial data
• Set/ coast
• Set/coast sig
• Starting/ charging system
• Stop lmp sply volt
• Stop lps fuse 25a
• Stoplamp switch (top of brake pedal)
• Tac motor cntrl 1
• Tac motor cntrl 2
• Tan
• Tcc brk sw
• Throttle actuator control module (left rear of engine compt)
• Throttle body
• Tp sensor 1 sig
• Tp sensor 2 sig
• Turn signal multifunction switch
• Under- hood fuse block
• Underhood fuse block (near battery)
• Veh stop fuse 15a
• Vehicle speed sensor (vss) (2wd: left side of transmission) (4wd: left side of transfer case)
• Vss
• Vss high
• Vss low

6.0L VIN N

6.0L VIN N, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN N, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• 5v ref
• A10
• Acceleration pedal position sensor (behind accelerator pedal)
• Anti-lock brakes system
• App sensor 1 sig
• App sensor 2 sig
• Brake fuse 10a
• Class 2 data
• Clutch pedal postion (cpp) switch
• Computer data lines system
• Cpp sw
• Cruise control on/off switch
• Cruise fuse 10a
• Cruise ind
• Cruise on sw sig
• Etc/ecm fuse 15a
• F12
• G104 (left rear of engine)
• Ground
• Hot at all times
• Hot in run
• Hot in run & start
• I/p fuse block (on lower left side of dash)
• I/p relay block
• Ign
• Ign volt
• Instrument panel cluster
• Low ref
• Nca
• Off
• Pnk
• Powertrain control module (left front of engine compt)
• Resume/ accel
• Resume/accel
• Resume/accel sig
• S102
• S207 (w/ pto) (in i/p harn)
• S224 (w/ pto) (in i/p harn)
• Serial data
• Set/ coast
• Set/coast sig
• Starting/ charging system
• Stop lmp sply volt
• Stop lps fuse 25a
• Stoplamp switch (top of brake pedal)
• Tac motor cntrl 1
• Tac motor cntrl 2
• Tan
• Tcc brk sw
• Throttle actuator control module (left rear of engine compt)
• Throttle body
• Tp sensor 1 sig
• Tp sensor 2 sig
• Turn signal multifunction switch
• Under- hood fuse block
• Underhood fuse block (near battery)
• Veh stop fuse 15a
• Vehicle speed sensor (vss) (2wd: left side of transmission) (4wd: left side of transfer case)
• Vss
• Vss high
• Vss low

6.0L VIN U

6.0L VIN U, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN U, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• 5v ref
• A10
• Acceleration pedal position sensor (behind accelerator pedal)
• Anti-lock brakes system
• App sensor 1 sig
• App sensor 2 sig
• Brake fuse 10a
• Class 2 data
• Clutch pedal postion (cpp) switch
• Computer data lines system
• Cpp sw
• Cruise control on/off switch
• Cruise fuse 10a
• Cruise ind
• Cruise on sw sig
• Etc/ecm fuse 15a
• F12
• G104 (left rear of engine)
• Ground
• Hot at all times
• Hot in run
• Hot in run & start
• I/p fuse block (on lower left side of dash)
• I/p relay block
• Ign
• Ign volt
• Instrument panel cluster
• Low ref
• Nca
• Off
• Pnk
• Powertrain control module (left front of engine compt)
• Resume/ accel
• Resume/accel
• Resume/accel sig
• S102
• S207 (w/ pto) (in i/p harn)
• S224 (w/ pto) (in i/p harn)
• Serial data
• Set/ coast
• Set/coast sig
• Starting/ charging system
• Stop lmp sply volt
• Stop lps fuse 25a
• Stoplamp switch (top of brake pedal)
• Tac motor cntrl 1
• Tac motor cntrl 2
• Tan
• Tcc brk sw
• Throttle actuator control module (left rear of engine compt)
• Throttle body
• Tp sensor 1 sig
• Tp sensor 2 sig
• Turn signal multifunction switch
• Under- hood fuse block
• Underhood fuse block (near battery)
• Veh stop fuse 15a
• Vehicle speed sensor (vss) (2wd: left side of transmission) (4wd: left side of transfer case)
• Vss
• Vss high
• Vss low

6.6L VIN 2

6.6L VIN 2, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN 2, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• A10
• Anti-lock brakes system
• Brake fuse 10a
• Class 2 data
• Clutch pedal position switch (top of clutch pedal)
• Computer data lines system
• Cpp sw
• Cruise control on/off switch
• Cruise fuse 10a
• Cruise ind
• Cruise on inp
• Cruise rel sig
• Engine control module (left front of engine compt)
• Exterior lights system
• F12
• Hot at all times
• Hot in run
• I/p fuse block (on lower left side of dash)
• I/p relay block (left of steering column)
• Ign
• Instrument panel cluster
• M/t
• Nca
• Off
• Radio
• Res/acc sw
• Resume/ accel
• Resume/accel
• S224 (w/ pto)
• Serial data
• Set/ coast
• Set/coast sw
• Starting/ charging system
• Stop lp fuse 25a
• Stoplamp switch (top of brake pedal)
• Transmission control module (tcm) (at left front of engine compt)
• Turn signal/ multifunction switch
• Underhood fuse block
• Underhood fuse block (near battery)
• Veh stop fuse 15a
• Vehicle speed sensor (vss) (2wd: rear of transmission) (4wd: on rear of transfer case)
• Vss high
• Vss low
• Vss sig

6.6L VIN D

6.6L VIN D, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN D, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• A10
• Anti-lock brakes system
• Brake fuse 10a
• Class 2 data
• Clutch pedal position switch (top of clutch pedal)
• Computer data lines system
• Cpp sw
• Cruise control on/off switch
• Cruise fuse 10a
• Cruise ind
• Cruise on inp
• Cruise rel sig
• Engine control module (left front of engine compt)
• Exterior lights system
• F12
• Hot at all times
• Hot in run
• I/p fuse block (on lower left side of dash)
• I/p relay block (left of steering column)
• Ign
• Instrument panel cluster
• M/t
• Nca
• Off
• Radio
• Res/acc sw
• Resume/ accel
• Resume/accel
• S224 (w/ pto)
• Serial data
• Set/ coast
• Set/coast sw
• Starting/ charging system
• Stop lp fuse 25a
• Stoplamp switch (top of brake pedal)
• Transmission control module (tcm) (at left front of engine compt)
• Turn signal/ multifunction switch
• Underhood fuse block
• Underhood fuse block (near battery)
• Veh stop fuse 15a
• Vehicle speed sensor (vss) (2wd: rear of transmission) (4wd: on rear of transfer case)
• Vss high
• Vss low
• Vss sig

8.1L VIN G

8.1L VIN G, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for 8.1L VIN G, Cruise Control Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• 5v ref
• A10
• Acceleration pedal position sensor (behind accelerator pedal)
• Anti-lock brakes system
• App sensor 1 sig
• App sensor 2 sig
• Brake fuse 10a
• Class 2 data
• Clutch pedal postion (cpp) switch
• Computer data lines system
• Cpp sw
• Cruise control on/off switch
• Cruise fuse 10a
• Cruise ind
• Cruise on sw sig
• Etc/ecm fuse 15a
• F12
• G104 (left rear of engine)
• Ground
• Hot at all times
• Hot in run
• Hot in run & start
• I/p fuse block (on lower left side of dash)
• I/p relay block
• Ign
• Ign volt
• Instrument panel cluster
• Low ref
• Nca
• Off
• Pnk
• Powertrain control module (left front of engine compt)
• Resume/ accel
• Resume/accel
• Resume/accel sig
• S102
• S207 (w/ pto) (in i/p harn)
• S224 (w/ pto) (in i/p harn)
• Serial data
• Set/ coast
• Set/coast sig
• Starting/ charging system
• Stop lmp sply volt
• Stop lps fuse 25a
• Stoplamp switch (top of brake pedal)
• Tac motor cntrl 1
• Tac motor cntrl 2
• Tan
• Tcc brk sw
• Throttle actuator control module (left rear of engine compt)
• Throttle body
• Tp sensor 1 sig
• Tp sensor 2 sig
• Turn signal multifunction switch
• Under- hood fuse block
• Underhood fuse block (near battery)
• Veh stop fuse 15a
• Vehicle speed sensor (vss) (2wd: left side of transmission) (4wd: left side of transfer case)
• Vss
• Vss high
• Vss low

DEFOGGERS

Heated Mirrors Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Heated Mirrors Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• A7 c1
• Air conditioning system
• B11
• Battery
• Computer data lines system
• Ddm fuse 15a
• Driver door module (ddm) (in driver's door)
• Driver outside rearview mirror
• F c3
• G200 (near right "a" pillar)
• Ground
• Hot at all times
• Hvac control module (in center of dash)
• I/p fuse block (lower left side of dash)
• I/p junction block (lower right side of dash)
• Low ref
• Passenger door module (pdm) (in right front door)
• Passenger outside rearview mirror
• Pdm fuse 10a
• R def
• Rear defog switch
• S202
• Serial data
• Tan

Rear Defogger Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Rear Defogger Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (except crewcab: right "b" pillar) (crewcab: near left "c" pillar)
• A c1
• A c2
• A6 c1
• B11
• B12
• Body control module (on lower left side of dash)
• Class 2 ser data
• Computer data lines system
• G306 (except crewcab) g390 (crewcab)
• Hot at all times
• Hot in run & start
• Hvac control module (in center of dash)
• I/p relay block (near left kick panel)
• Ign
• L c10
• Logic
• Rear defog switch
• Rear defogger relay
• Rear window defogger grid
• Relay cntrl
• Serial data

ELECTRONIC POWER STEERING

Electronic Power Steering Wiring Diagram, Hybrid for GMC Sierra Classic HD 2007 2500

List of elements for Electronic Power Steering Wiring Diagram, Hybrid for GMC Sierra Classic HD 2007 2500:

• (below steering column) body control module
• (front of right cylinder head)
• (left front of engine)
• (near left kick panel)
• 5v ref
• Anti-theft system
• B11 c2
• B7 c2
• B7 c3
• Battery 3
• Brake pedal position sensor
• Brake pedal position sig
• C1 c4
• C341
• Computer data lines system
• Cruise fuse 10a
• Ehps fuse 125a
• Ehps interlock loop signal
• Ehps-1 fuse 10a
• Electro hydraulic power steering (ehps) module (left front of engine)
• Energy storage box (under rear passenger seat)
• G103 (on right rear of engine block)
• G121
• G122
• G203 (near left "a" pillar)
• G203 (near left 'a" pillar)
• Gnd
• Ground
• Hi speed gmlan ser data bus +
• Hi speed gmlan ser data bus -
• Hot in accy, run & start
• Hot in run
• Hot in run & start
• I/p fuse block (on lower left side of dash)
• I/p relay block
• Ign 0 voltage
• Ign voltage
• Info not avail
• Info not available
• Ing 0 fuse 10a
• Interior lights system
• Low ref
• Nca
• Pnk
• Red
• S103
• S120
• S121
• S131
• S216
• S240
• Service dis- connect
• Starting/ charging system
• Steering wheel position master pulse signal
• Steering wheel position sensor signal
• Steering wheel position signal a
• Steering wheel position signal b
• Steering wheel speed/position sensor (on steering column)
• Tan
• Underhood secondary fuse block (left side of eng compt, rear of battery)

ELECTRONIC SUSPENSION

Electronic Suspension Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Electronic Suspension Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (near left kick panel)
• (on left body mount)
• (on spare tire hoist bracket)
• G200 (near right "a" pillar)
• G302
• G401
• Ground
• Hot in run and start
• I/p relay block
• I/p relay block (near left kick panel)
• Interior lighting systems
• Left front shock absorber solenoid (part of left front shock)
• Left rear shock absorber solenoid (part of left rear shock)
• Logic
• Normal/ firm
• Pnk
• Ride indicator
• Ride signal
• Right front shock absorber solenoid (part of right front shock)
• Right rear shock absorber solenoid (part of right rear shock)
• S140
• S202
• Selectable ride switch
• Seo ign fuse 10a
• Underhood fuse block (left side of engine compt)

ENGINE PERFORMANCE

4.3L VIN X

4.3L VIN X, Engine Performance Wiring Diagram (1 of 4) for GMC Sierra Classic HD 2007 2500

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (1 of 4) for GMC Sierra Classic HD 2007 2500:

• (below steering column) data link connector
• (on bottom of eng, near crank pulley) crankshaft position sensor
• (right rear of engine block)
• +5v
• 3-2 ss
• A/c system
• A12
• B10
• B12
• Body control module (below steering column)
• Brk sw
• C10
• Central sequential fuel injection
• Cfan rly lo
• Ckp sig
• Cls 2 data
• Clutch sw
• Cmp
• Cooling fans system
• D10
• E10
• E11
• Ect sig
• Engine oil pressure (eop) sensor
• Fuel injectors
• G103
• Gnd
• Ho2s hi
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• I/p fuse block (lower left side of dash)
• Ign
• Ign 0 fuse 10a
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj1 fuse 15a
• Inj2 fuse 15a
• Low ref
• Nca
• O2a fuse 15a
• O2b fuse 15a
• Pcm1 fuse 15a
• Pcmb fuse 20a
• Pnk
• Pnk b
• Pnk d
• Pnk e
• Pnk h
• Pnk j
• Pnk l
• Power distribution system
• Powertrain control module (pcm) (left front of engine compt)
• Prnd a
• Prnd b
• Prnd p
• Range b
• Range c
• Red
• Ref low
• Rly ctrl
• S103
• S110
• Sens gnd
• Sensor sig
• Sp205 (in i/p harness)
• Starting system
• Tan
• Underhood fuse block (left side of eng compt) c1

4.3L VIN X, Engine Performance Wiring Diagram (2 of 4) for GMC Sierra Classic HD 2007 2500

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (2 of 4) for GMC Sierra Classic HD 2007 2500:

• (not used)
• Engine coolant temperature sensor (rear side of left cylinder head)
• Fuel pump & sender assembly (in fuel tank)
• Fuel pump relay
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• G110 (left front body mount)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after converter)
• Hot at all times
• Knock sensor (left rear of engine block)
• Nca
• Park/neutral position switch (left side of trans- mission)
• Pcm b fuse 20a
• Pnk
• Red
• S103
• Tan
• Throttle position sensor (on throttle body assy)
• Under- hood fuse block (left side of eng compt)

4.3L VIN X, Engine Performance Wiring Diagram (3 of 4) for GMC Sierra Classic HD 2007 2500

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (3 of 4) for GMC Sierra Classic HD 2007 2500:

• (in chassis harn)
• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Brk fuse 10a
• C12
• C2 c12
• Camshaft position sensor (in distributor)
• Clutch start switch (on top of pedal clutch pedal assembly)
• Cruise control system
• E11
• Evaporative emissions canister purge solenoid (right side of eng, attached to intake manifold)
• Evaporative emissions canister vent solenoid (on rear of fuel tank)
• Fuel tank pressure sensor (on fuel tank, integral to fuel pump & sender assembly)
• G103 (right rear of engine block)
• Gnd
• Hot in accy, run & start
• Hot in run
• I/p fuse block (lower left side of dash)
• Iat sensor
• Ign
• Ign0 fuse 10a
• Manifold absolute pressure sensor (on top of intake manifold)
• Mass airflow (maf)/intake air temperature (iat) sensor (between air cleaner assembly &b throttle body)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Pnk d
• Power distribution system
• Red
• Red/
• Rev
• S103
• S125
• S312
• Signal
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tan b
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Under- hood junction block
• Underhood fuse block (left side of eng compt)
• Vehicle speed sensor (left rear of transmission)

4.3L VIN X, Engine Performance Wiring Diagram (4 of 4) for GMC Sierra Classic HD 2007 2500

List of elements for 4.3L VIN X, Engine Performance Wiring Diagram (4 of 4) for GMC Sierra Classic HD 2007 2500:

• (lower right front of eng block)
• (m/t)
• (not used)
• 1-2 ss ctrl
• 2-3 ss ctrl
• 4wd low
• 4ws fuse 15a
• A/c clu
• A/c system
• Anti-lock brake system (speed signal)
• B11
• Cfan rly hi spd
• Coil driver
• Cooling fans system
• Crank fuse 10a
• Crank voltage
• Cruise control system a/c system
• Cruise eng
• Evap vent ctrl
• Fld sig
• Front axle actuator (on front axle)
• Frt axle sw
• Fuel lev
• Fuel sig ctrl
• G102
• G103 (right rear of engine block)
• Gen reg ctrl
• Gnd
• Hot at all times
• Hot in run & start
• Hot in start
• Htr low ctrl
• Iac coil hi
• Iac coil lo
• Iat sig
• Ic timing ctrl
• Idle air control valve (mounted to throttle body)
• Ign
• Ign feed
• Ignition coil
• Ignition control module (on right front of intake manifold)
• Instrument cluster systems (speed signal)
• Instrument panel cluster
• Ipc/dic fuse 10a
• Low ref
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Oil press sig
• Pc sol hi
• Pc sol lo
• Pmp rly ctrl
• Pnk
• Pnk a
• Powertrain control module (pcm) (left front of engine compt)
• Prnd c
• Red
• Rpm out
• S103
• Sens gnd
• Sens sig
• Sol ctrl
• Starting/ charging system
• Starting/charging system
• Sw sig
• Tan
• Tcc pwm
• Tcc sol ctrl
• Tft sens sig
• Timing
• Tp sig
• Trans rng a
• Trans- missions system
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch (on left side of transfer case)
• Under- hood fuse block (left side of eng compt)
• Vss high
• Vss low
• Vss out
• W/ 2 speed manual shift control
• W/ 2 speed push button control

4.8L VIN V

4.8L VIN V, Engine Performance Wiring Diagram (1 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 4.8L VIN V, Engine Performance Wiring Diagram (1 of 5) for GMC Sierra Classic HD 2007 2500:

• (below steering column) data link connector
• (lower right rear of eng block) crankshaft position (ckp) sensor
• +5v
• 3-2 ss ctrl
• A/c system
• Anti-lock brakes sys
• Brk sw sig
• C10
• Cfan lo rly
• Ckp sig
• Cls 2 data
• Cmp sig
• Cooling fans system
• Cpp sw sig
• D10
• E10
• E11
• Ect sig
• Electronic suspension system
• Fuel injectors
• G103 (right rear of eng block)
• Gnd
• Ho2s hi sig
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• I/p fuse block (lower left side of dash)
• Ign
• Ign 0 fuse 10a c1
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Inj1 fuse 15a
• Inj2 fuse 15a
• Ks signal
• Lift/dive sig
• O2a fuse 15a
• O2b fuse 15a
• Oil lev sw sig
• Pcmb fuse 20a
• Pnk
• Pnk a
• Power distribution system
• Powertrain control module (left front of engine compt)
• Prnd a sig
• Prnd b sig
• Prnd p sig
• Range b
• Range c
• Red
• Ref low
• Ref low (a/t)
• Req torq sig
• Rly ctrl
• S103
• S110
• Serial data
• Sp205 (in i/p harness)
• Starting/ charging system
• Tan
• Under- hood fuse block (left c1 side of eng compt)

4.8L VIN V, Engine Performance Wiring Diagram (2 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 4.8L VIN V, Engine Performance Wiring Diagram (2 of 5) for GMC Sierra Classic HD 2007 2500:

• (4.8l & 5.3l)
• (6.0l)
• (dual tanks)
• (in secondary fuel tank) fuel pump & sender assembly (secondary)
• (not used)
• (right rear of engine block)
• Engine coolant temperature sensor (front side of left cylinder head)
• Engine oil level switch (right side of oil pan)
• Fuel pump & sender assembly (primary) (0n fuel tank)
• Fuel pump relay
• Fuel pump relay (secondary) (dual tanks) (in underhood fuse block)
• G103
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• G110 (left front body mount)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after catalytic converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after catalytic converter)
• Hot at all times
• Hot in run & start
• Knock sensor 1 (under intake manifold)
• Knock sensor 2 (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pcm b fuse 20a
• Pnk
• Red
• S103
• Sba fuse 15a
• Tan
• Underhood fuse block (left side of eng compt)

4.8L VIN V, Engine Performance Wiring Diagram (3 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 4.8L VIN V, Engine Performance Wiring Diagram (3 of 5) for GMC Sierra Classic HD 2007 2500:

• (4l60e)
• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Brk fuse 10a
• C12
• C2 c12
• Camshaft position sensor (top center rear of engine)
• Engine oil pressure (eop) sensor (top rear of engine)
• Evaporative emissions (evap) canister purge solenoid (behind throttle body, near front of eng)
• Evaporative emissions canister vent solenoid (10 series: rear fuel tank, 20/30 series: right front side of primary fuel tank)
• F12
• Fuel tank pressure sensor (on fuel tank, integral to fuel pump & sender assembly)
• Hot at all times
• Hot in run
• I/p fuse block (lower left side of dash)
• Manifold absolute pressure sensor (top rear of eng, on intake manifold)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Red
• Red/
• Rev
• S (4l60e)
• S125
• S312
• Stop lps fuse 25a
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Underhood fuse block (left side of eng compt)
• Vehicle speed sensor (rear of transmission/ transfer case)

4.8L VIN V, Engine Performance Wiring Diagram (4 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 4.8L VIN V, Engine Performance Wiring Diagram (4 of 5) for GMC Sierra Classic HD 2007 2500:

• (driver's floor board, above accelerator pedal) accelerator pedal position sensor
• (in automatic transmission) (4l80e) automatic transmission input shaft speed sensor
• 4ws fuse 15a
• A10
• Act cntrl
• App sens 1
• App sens 2
• Cruise control system
• Cruise req
• Data
• E11
• Ect/ecm fuse 15a
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• Gnd
• Ground
• Hot at all times
• Hot in run & start
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Iat sensor
• Ign
• Ign0 fuse 10a
• Mass airflow (maf)/intake intake air temperature (iat) intake air (between air cleaner assembly & throttle body)
• Pnk
• R/a input
• Red
• Ref low
• S/c input
• S102
• S103
• Signal
• Stp lp in
• Tac ctrl
• Tan
• Throttle actuator control module (left rear of engine compt)
• Throttle body
• Tp sens 1
• Tp sens 2
• Underhood fuse block (left side of eng compt)
• Veh stop fuse 15a

4.8L VIN V, Engine Performance Wiring Diagram (5 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 4.8L VIN V, Engine Performance Wiring Diagram (5 of 5) for GMC Sierra Classic HD 2007 2500:

• (in ignition coil jumper harness)
• (left side of eng block) g102
• 1-2 ss ctrl
• 2-3 ss ctrl
• 4wd low sig
• A/c system
• A12
• Air conditioning system
• Anti-lock brakes system
• At iss high sig
• At iss low sig
• Axle sw sig
• B10
• B11
• Cfan hi rly
• Clu rly ctrl
• Cooling fans system
• Crank fuse 10a
• Crank volt
• Css sig
• Ctrl
• Cycle sig
• Delivered torq
• Evap canp ctrl
• Evap vent ctrl
• Exc seo
• Fuel lev sens
• Fuel lev sig
• Fuel press sig
• G103 (right rear of engine block)
• Gnd
• Ho2s htr low
• Ho2s low ctrl
• Hot at all times
• Hot in run & start
• Hot in start
• Iat sig
• Ign
• Ign ctrl
• Ign feed
• Ignition coils
• Ind ctrl
• Instrument cluster system
• Instrument panel cluster
• Ipc/dic fuse 10a
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi ctrl
• Pc sol lo ctrl
• Pcm1 fuse 15a
• Pmp rly ctrl
• Pnk
• Pnk d
• Powertrain control module (left front of engine compt)
• Press sens sig
• Prnd c sig
• Red
• Red c
• Ref lo
• Ref low
• Rpm out
• S103
• S151
• S153
• S157
• S159
• S160
• Seo
• Seo b1 fuse 15a
• Spark plug
• Starting/charging system
• Tan
• Tcc pwm ctrl
• Tcc sol ctrl
• Tft sens sig
• Transmissions system
• Underhood fuse block (left side of eng compt)
• Vss high sig
• Vss low sig
• Vss out

5.3L VIN B

5.3L VIN B, Engine Performance Wiring Diagram (1 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN B, Engine Performance Wiring Diagram (1 of 5) for GMC Sierra Classic HD 2007 2500:

• (below steering column) data link connector
• (lower right rear of eng block) crankshaft position (ckp) sensor
• +5v
• 3-2 ss ctrl
• A/c system
• Anti-lock brakes sys
• Brk sw sig
• C10
• Cfan lo rly
• Ckp sig
• Cls 2 data
• Cmp sig
• Cooling fans system
• Cpp sw sig
• D10
• E10
• E11
• Ect sig
• Electronic suspension system
• Fuel injectors
• G103 (right rear of eng block)
• Gnd
• Ho2s hi sig
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• I/p fuse block (lower left side of dash)
• Ign
• Ign 0 fuse 10a c1
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Inj1 fuse 15a
• Inj2 fuse 15a
• Ks signal
• Lift/dive sig
• O2a fuse 15a
• O2b fuse 15a
• Oil lev sw sig
• Pcmb fuse 20a
• Pnk
• Pnk a
• Power distribution system
• Powertrain control module (left front of engine compt)
• Prnd a sig
• Prnd b sig
• Prnd p sig
• Range b
• Range c
• Red
• Ref low
• Ref low (a/t)
• Req torq sig
• Rly ctrl
• S103
• S110
• Serial data
• Sp205 (in i/p harness)
• Starting/ charging system
• Tan
• Under- hood fuse block (left c1 side of eng compt)

5.3L VIN B, Engine Performance Wiring Diagram (2 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN B, Engine Performance Wiring Diagram (2 of 5) for GMC Sierra Classic HD 2007 2500:

• (4.8l & 5.3l)
• (6.0l)
• (dual tanks)
• (in secondary fuel tank) fuel pump & sender assembly (secondary)
• (not used)
• (right rear of engine block)
• Engine coolant temperature sensor (front side of left cylinder head)
• Engine oil level switch (right side of oil pan)
• Fuel pump & sender assembly (primary) (0n fuel tank)
• Fuel pump relay
• Fuel pump relay (secondary) (dual tanks) (in underhood fuse block)
• G103
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• G110 (left front body mount)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after catalytic converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after catalytic converter)
• Hot at all times
• Hot in run & start
• Knock sensor 1 (under intake manifold)
• Knock sensor 2 (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pcm b fuse 20a
• Pnk
• Red
• S103
• Sba fuse 15a
• Tan
• Underhood fuse block (left side of eng compt)

5.3L VIN B, Engine Performance Wiring Diagram (3 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN B, Engine Performance Wiring Diagram (3 of 5) for GMC Sierra Classic HD 2007 2500:

• (4l60e)
• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Brk fuse 10a
• C12
• C2 c12
• Camshaft position sensor (top center rear of engine)
• Engine oil pressure (eop) sensor (top rear of engine)
• Evaporative emissions (evap) canister purge solenoid (behind throttle body, near front of eng)
• Evaporative emissions canister vent solenoid (10 series: rear fuel tank, 20/30 series: right front side of primary fuel tank)
• F12
• Fuel tank pressure sensor (on fuel tank, integral to fuel pump & sender assembly)
• Hot at all times
• Hot in run
• I/p fuse block (lower left side of dash)
• Manifold absolute pressure sensor (top rear of eng, on intake manifold)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Red
• Red/
• Rev
• S (4l60e)
• S125
• S312
• Stop lps fuse 25a
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Underhood fuse block (left side of eng compt)
• Vehicle speed sensor (rear of transmission/ transfer case)

5.3L VIN B, Engine Performance Wiring Diagram (4 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN B, Engine Performance Wiring Diagram (4 of 5) for GMC Sierra Classic HD 2007 2500:

• (driver's floor board, above accelerator pedal) accelerator pedal position sensor
• (in automatic transmission) (4l80e) automatic transmission input shaft speed sensor
• 4ws fuse 15a
• A10
• Act cntrl
• App sens 1
• App sens 2
• Cruise control system
• Cruise req
• Data
• E11
• Ect/ecm fuse 15a
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• Gnd
• Ground
• Hot at all times
• Hot in run & start
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Iat sensor
• Ign
• Ign0 fuse 10a
• Mass airflow (maf)/intake intake air temperature (iat) intake air (between air cleaner assembly & throttle body)
• Pnk
• R/a input
• Red
• Ref low
• S/c input
• S102
• S103
• Signal
• Stp lp in
• Tac ctrl
• Tan
• Throttle actuator control module (left rear of engine compt)
• Throttle body
• Tp sens 1
• Tp sens 2
• Underhood fuse block (left side of eng compt)
• Veh stop fuse 15a

5.3L VIN B, Engine Performance Wiring Diagram (5 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN B, Engine Performance Wiring Diagram (5 of 5) for GMC Sierra Classic HD 2007 2500:

• (in ignition coil jumper harness)
• (left side of eng block) g102
• 1-2 ss ctrl
• 2-3 ss ctrl
• 4wd low sig
• A/c system
• A12
• Air conditioning system
• Anti-lock brakes system
• At iss high sig
• At iss low sig
• Axle sw sig
• B10
• B11
• Cfan hi rly
• Clu rly ctrl
• Cooling fans system
• Crank fuse 10a
• Crank volt
• Css sig
• Ctrl
• Cycle sig
• Delivered torq
• Evap canp ctrl
• Evap vent ctrl
• Exc seo
• Fuel lev sens
• Fuel lev sig
• Fuel press sig
• G103 (right rear of engine block)
• Gnd
• Ho2s htr low
• Ho2s low ctrl
• Hot at all times
• Hot in run & start
• Hot in start
• Iat sig
• Ign
• Ign ctrl
• Ign feed
• Ignition coils
• Ind ctrl
• Instrument cluster system
• Instrument panel cluster
• Ipc/dic fuse 10a
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi ctrl
• Pc sol lo ctrl
• Pcm1 fuse 15a
• Pmp rly ctrl
• Pnk
• Pnk d
• Powertrain control module (left front of engine compt)
• Press sens sig
• Prnd c sig
• Red
• Red c
• Ref lo
• Ref low
• Rpm out
• S103
• S151
• S153
• S157
• S159
• S160
• Seo
• Seo b1 fuse 15a
• Spark plug
• Starting/charging system
• Tan
• Tcc pwm ctrl
• Tcc sol ctrl
• Tft sens sig
• Transmissions system
• Underhood fuse block (left side of eng compt)
• Vss high sig
• Vss low sig
• Vss out

5.3L VIN T

5.3L VIN T, Engine Performance Wiring Diagram, Except Hybrid (1 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram, Except Hybrid (1 of 5) for GMC Sierra Classic HD 2007 2500:

• (below steering column) data link connector
• (lower right rear of eng block) crankshaft position (ckp) sensor
• +5v
• 3-2 ss ctrl
• A/c system
• Anti-lock brakes sys
• Brk sw sig
• C10
• Cfan lo rly
• Ckp sig
• Cls 2 data
• Cmp sig
• Cooling fans system
• Cpp sw sig
• D10
• E10
• E11
• Ect sig
• Electronic suspension system
• Fuel injectors
• G103 (right rear of eng block)
• Gnd
• Ho2s hi sig
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• I/p fuse block (lower left side of dash)
• Ign
• Ign 0 fuse 10a c1
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Inj1 fuse 15a
• Inj2 fuse 15a
• Ks signal
• Lift/dive sig
• O2a fuse 15a
• O2b fuse 15a
• Oil lev sw sig
• Pcmb fuse 20a
• Pnk
• Pnk a
• Power distribution system
• Powertrain control module (left front of engine compt)
• Prnd a sig
• Prnd b sig
• Prnd p sig
• Range b
• Range c
• Red
• Ref low
• Ref low (a/t)
• Req torq sig
• Rly ctrl
• S103
• S110
• Serial data
• Sp205 (in i/p harness)
• Starting/ charging system
• Tan
• Under- hood fuse block (left c1 side of eng compt)

5.3L VIN T, Engine Performance Wiring Diagram, Except Hybrid (2 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram, Except Hybrid (2 of 5) for GMC Sierra Classic HD 2007 2500:

• (4l60e)
• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Brk fuse 10a
• C12
• C2 c12
• Camshaft position sensor (top center rear of engine)
• Engine oil pressure (eop) sensor (top rear of engine)
• Evaporative emissions (evap) canister purge solenoid (behind throttle body, near front of eng)
• Evaporative emissions canister vent solenoid (10 series: rear fuel tank, 20/30 series: right front side of primary fuel tank)
• F12
• Fuel tank pressure sensor (on fuel tank, integral to fuel pump & sender assembly)
• Hot at all times
• Hot in run
• I/p fuse block (lower left side of dash)
• Manifold absolute pressure sensor (top rear of eng, on intake manifold)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Red
• Red/
• Rev
• S (4l60e)
• S125
• S312
• Stop lps fuse 25a
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Underhood fuse block (left side of eng compt)
• Vehicle speed sensor (rear of transmission/ transfer case)

5.3L VIN T, Engine Performance Wiring Diagram, Except Hybrid (3 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram, Except Hybrid (3 of 5) for GMC Sierra Classic HD 2007 2500:

• (4.8l & 5.3l)
• (6.0l)
• (dual tanks)
• (in secondary fuel tank) fuel pump & sender assembly (secondary)
• (not used)
• (right rear of engine block)
• Engine coolant temperature sensor (front side of left cylinder head)
• Engine oil level switch (right side of oil pan)
• Fuel pump & sender assembly (primary) (0n fuel tank)
• Fuel pump relay
• Fuel pump relay (secondary) (dual tanks) (in underhood fuse block)
• G103
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• G110 (left front body mount)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after catalytic converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after catalytic converter)
• Hot at all times
• Hot in run & start
• Knock sensor 1 (under intake manifold)
• Knock sensor 2 (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pcm b fuse 20a
• Pnk
• Red
• S103
• Sba fuse 15a
• Tan
• Underhood fuse block (left side of eng compt)

5.3L VIN T, Engine Performance Wiring Diagram, Except Hybrid (4 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram, Except Hybrid (4 of 5) for GMC Sierra Classic HD 2007 2500:

• (driver's floor board, above accelerator pedal) accelerator pedal position sensor
• (in automatic transmission) (4l80e) automatic transmission input shaft speed sensor
• 4ws fuse 15a
• A10
• Act cntrl
• App sens 1
• App sens 2
• Cruise control system
• Cruise req
• Data
• E11
• Ect/ecm fuse 15a
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• Gnd
• Ground
• Hot at all times
• Hot in run & start
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Iat sensor
• Ign
• Ign0 fuse 10a
• Mass airflow (maf)/intake intake air temperature (iat) intake air (between air cleaner assembly & throttle body)
• Pnk
• R/a input
• Red
• Ref low
• S/c input
• S102
• S103
• Signal
• Stp lp in
• Tac ctrl
• Tan
• Throttle actuator control module (left rear of engine compt)
• Throttle body
• Tp sens 1
• Tp sens 2
• Underhood fuse block (left side of eng compt)
• Veh stop fuse 15a

5.3L VIN T, Engine Performance Wiring Diagram, Except Hybrid (5 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram, Except Hybrid (5 of 5) for GMC Sierra Classic HD 2007 2500:

• (in ignition coil jumper harness)
• (left side of eng block) g102
• 1-2 ss ctrl
• 2-3 ss ctrl
• 4wd low sig
• A/c system
• A12
• Air conditioning system
• Anti-lock brakes system
• At iss high sig
• At iss low sig
• Axle sw sig
• B10
• B11
• Cfan hi rly
• Clu rly ctrl
• Cooling fans system
• Crank fuse 10a
• Crank volt
• Css sig
• Ctrl
• Cycle sig
• Delivered torq
• Evap canp ctrl
• Evap vent ctrl
• Exc seo
• Fuel lev sens
• Fuel lev sig
• Fuel press sig
• G103 (right rear of engine block)
• Gnd
• Ho2s htr low
• Ho2s low ctrl
• Hot at all times
• Hot in run & start
• Hot in start
• Iat sig
• Ign
• Ign ctrl
• Ign feed
• Ignition coils
• Ind ctrl
• Instrument cluster system
• Instrument panel cluster
• Ipc/dic fuse 10a
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi ctrl
• Pc sol lo ctrl
• Pcm1 fuse 15a
• Pmp rly ctrl
• Pnk
• Pnk d
• Powertrain control module (left front of engine compt)
• Press sens sig
• Prnd c sig
• Red
• Red c
• Ref lo
• Ref low
• Rpm out
• S103
• S151
• S153
• S157
• S159
• S160
• Seo
• Seo b1 fuse 15a
• Spark plug
• Starting/charging system
• Tan
• Tcc pwm ctrl
• Tcc sol ctrl
• Tft sens sig
• Transmissions system
• Underhood fuse block (left side of eng compt)
• Vss high sig
• Vss low sig
• Vss out

5.3L VIN T, Engine Performance Wiring Diagram, Hybrid (1 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram, Hybrid (1 of 6) for GMC Sierra Classic HD 2007 2500:

• (below steering column) data link connector
• (m/t)
• +5v
• 3-2 ss ctrl
• A/c system
• Anti-lock brakes sys
• Brk sw sig
• C10
• Cfan lo rly
• Ckp sig
• Cls 2 data
• Cmp sig
• Cooling fans system
• Cpp sw sig
• Crankshaft position (ckp) sensor (lower right rear of engine block)
• D10
• E10
• E11
• Ect sig
• Electronic suspension system
• F10
• Fuel injectors
• G103 (right rear of engine block)
• Gnd
• Ho2s hi sig
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• I/p fuse block (lower left side of dash)
• Ign
• Ign 0 fuse 10a
• Ign b fuse 40a
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Inj1 fuse 15a
• Inj2 fuse 15a
• Ks signal
• Lift/dive sig
• Oil lev sw sig
• Pcmb fuse 20a
• Pnk
• Pnk a
• Power distribution system
• Powertrain control module (left front of engine compt)
• Prnd a sig
• Prnd b sig
• Prnd p sig
• Range b
• Range c
• Red
• Ref low
• Ref low (a/t)
• Req torq sig
• Rly ctrl
• S103
• S110
• S114
• S131
• Serial data
• Sp205 (in i/p harness)
• Starting/ charging system
• Tan
• Under- hood fuse block (left c1 side of eng compt)

5.3L VIN T, Engine Performance Wiring Diagram, Hybrid (2 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram, Hybrid (2 of 6) for GMC Sierra Classic HD 2007 2500:

• (pins 13-27 not used)
• (pins 3-7 not used)
• (pins 30-33 not used)
• (pins 35-39 not used)
• (right rear of engine block)
• (right rear of engine block) g103
• A/c system
• Apo sw ind
• Apo sw sig
• Aux htr pmp rly
• Class 2 data
• Computer data lines system
• Distribution
• Engine oil level switch (right side of oil pan)
• G103
• Gmlan data (+)
• Gmlan data (-)
• Ground
• Hcm-b fuse 10a
• Hcm-i fuse 10a
• Hood ajar sw
• Hood ajar switch
• Hot at all times
• Hot in run and start
• Hybrid control module (left side of engine compt, attached to fan shroud)
• Hybrid o2a fuse 15a
• Hybrid o2b fuse 15a
• Ign 0
• Ign 1
• Knock sensor 1 (under intake manifold)
• Knock sensor 2 (under intake manifold)
• Low ref
• Pnk
• Power
• Power distribution system
• Pwr maint relay
• Pwr maintn rly
• Red
• S103
• S108
• S116
• Secondary underhood fuse block (left side of eng compt, rear of battery)
• Tan
• Trans pmp rly
• Transmissions system

5.3L VIN T, Engine Performance Wiring Diagram, Hybrid (3 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram, Hybrid (3 of 6) for GMC Sierra Classic HD 2007 2500:

• (dual tanks)
• (in secondary fuel tank) fuel pump & sender assembly (secondary)
• (not used)
• Engine coolant temperature sensor (front side of left cylinder head)
• Fuel pump & sender assembly (primary) (on fuel tank)
• Fuel pump relay
• Fuel pump relay (secondary) (dual tanks) (in underhood fuse block)
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• G110 (left front body mount)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after catalytic converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after catalytic converter)
• Hot at all times
• Hot in run & start
• Nca
• Park/neutral position switch (left side of transmission)
• Pcm b fuse 20a
• Pnk
• Red
• S103
• Sba fuse 15a
• Tan
• Underhood fuse block (left side of eng compt)

5.3L VIN T, Engine Performance Wiring Diagram, Hybrid (4 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram, Hybrid (4 of 6) for GMC Sierra Classic HD 2007 2500:

• (4l60e)
• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Brk fuse 10a
• C12
• Camshaft position sensor (top center rear of engine)
• Engine oil pressure (eop) sensor (top rear of engine)
• Evaporative emissions (evap) canister purge solenoid (behind throttle body)
• Evaporative emissions canister vent solenoid (right front side of fuel tank)
• F12
• Fuel tank pressure sensor (on fuel tank, integral to fuel pump & sender assembly)
• Hot at all times
• Hot in run
• I/p fuse block (lower left side of dash)
• Manifold absolute pressure sensor (top rear of engine, on intake manifold)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Red
• Red/
• Rev
• S (4l60e)
• S125
• S312
• Stop lps fuse 25a
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Under- hood fuse block
• Underhood fuse block (left side of eng compt)
• Vehicle speed sensor (rear of transmission/ transfer case)

5.3L VIN T, Engine Performance Wiring Diagram, Hybrid (5 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram, Hybrid (5 of 6) for GMC Sierra Classic HD 2007 2500:

• (driver's floor board, above accelerator pedal) accelerator pedal position sensor
• (in automatic transmission) (4l80e) automatic transmission input shaft speed sensor
• 4ws fuse 15a
• A10
• Act cntrl
• App sens 1
• App sens 2
• Cruise control system
• Cruise req
• Data
• E11
• Ect/ecm fuse 15a
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• Gnd
• Ground
• Hot at all times
• Hot in run & start
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Iat sensor
• Ign
• Ign0 fuse 10a
• Mass airflow (maf)/intake intake air temperature (iat) intake air (between air cleaner assembly & throttle body)
• Pnk
• R/a input
• Red
• Ref low
• S/c input
• S102
• S103
• Signal
• Stp lp in
• Tac ctrl
• Tan
• Throttle actuator control module (left rear of engine compt)
• Throttle body
• Tp sens 1
• Tp sens 2
• Underhood fuse block (left side of eng compt)
• Veh stop fuse 15a

5.3L VIN T, Engine Performance Wiring Diagram, Hybrid (6 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Engine Performance Wiring Diagram, Hybrid (6 of 6) for GMC Sierra Classic HD 2007 2500:

• (in ignition coil jumper harness)
• (left side of engine block) g102
• 1-2 ss ctrl
• 2-3 ss ctrl
• 4wd low sig
• A/c system
• A12
• Air conditioning system
• Anti-lock brakes system
• At iss high sig
• At iss low sig
• Axle sw sig
• B10
• B11
• Cfan hi rly
• Clu rly ctrl
• Computer data lines system
• Cooling fans system
• Crank fuse 10a
• Crank volt
• Css sig
• Ctrl
• Delivered torq
• Evap canp ctrl
• Evap vent ctrl
• Exc seo
• Fuel lev sens
• Fuel lev sig
• Fuel press sig
• G103 (right rear of engine block)
• Gmlan data (+)
• Gmlan data (-)
• Gnd
• Ho2s htr low
• Ho2s low ctrl
• Hot at all times
• Hot in run & start
• Hot in start
• Iat sig
• Ign
• Ign ctrl
• Ign feed
• Ignition coils
• Ind ctrl
• Instrument cluster system
• Instrument panel cluster
• Ipc/dic fuse 10a
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi ctrl
• Pc sol lo ctrl
• Pcm1 fuse 15a
• Pmp rly ctrl
• Pnk
• Pnk d
• Powertrain control module (left front of engine compt)
• Press sens sig
• Prnd c sig
• Red
• Red c
• Ref lo
• Ref low
• S103
• S151
• S153
• S156
• S157
• S159
• S160
• Seo
• Seo b1 fuse 15a
• Spark plug
• Starting/charging system
• Tan
• Tcc pwm ctrl
• Tcc sol ctrl
• Tft sens sig
• Transmissions system
• Underhood fuse block (left side of eng compt)
• Vss high sig
• Vss low sig
• Vss out

5.3L VIN Z

5.3L VIN Z, Engine Performance Wiring Diagram (1 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN Z, Engine Performance Wiring Diagram (1 of 5) for GMC Sierra Classic HD 2007 2500:

• (below steering column) data link connector
• (lower right rear of eng block) crankshaft position (ckp) sensor
• +5v
• 3-2 ss ctrl
• A/c system
• Anti-lock brakes sys
• Brk sw sig
• C10
• Cfan lo rly
• Ckp sig
• Cls 2 data
• Cmp sig
• Cooling fans system
• Cpp sw sig
• D10
• E10
• E11
• Ect sig
• Electronic suspension system
• Fuel injectors
• G103 (right rear of eng block)
• Gnd
• Ho2s hi sig
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• I/p fuse block (lower left side of dash)
• Ign
• Ign 0 fuse 10a c1
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Inj1 fuse 15a
• Inj2 fuse 15a
• Ks signal
• Lift/dive sig
• O2a fuse 15a
• O2b fuse 15a
• Oil lev sw sig
• Pcmb fuse 20a
• Pnk
• Pnk a
• Power distribution system
• Powertrain control module (left front of engine compt)
• Prnd a sig
• Prnd b sig
• Prnd p sig
• Range b
• Range c
• Red
• Ref low
• Ref low (a/t)
• Req torq sig
• Rly ctrl
• S103
• S110
• Serial data
• Sp205 (in i/p harness)
• Starting/ charging system
• Tan
• Under- hood fuse block (left c1 side of eng compt)

5.3L VIN Z, Engine Performance Wiring Diagram (2 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN Z, Engine Performance Wiring Diagram (2 of 5) for GMC Sierra Classic HD 2007 2500:

• (4.8l & 5.3l)
• (6.0l)
• (dual tanks)
• (in secondary fuel tank) fuel pump & sender assembly (secondary)
• (not used)
• (right rear of engine block)
• Engine coolant temperature sensor (front side of left cylinder head)
• Engine oil level switch (right side of oil pan)
• Fuel pump & sender assembly (primary) (0n fuel tank)
• Fuel pump relay
• Fuel pump relay (secondary) (dual tanks) (in underhood fuse block)
• G103
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• G110 (left front body mount)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after catalytic converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after catalytic converter)
• Hot at all times
• Hot in run & start
• Knock sensor 1 (under intake manifold)
• Knock sensor 2 (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pcm b fuse 20a
• Pnk
• Red
• S103
• Sba fuse 15a
• Tan
• Underhood fuse block (left side of eng compt)

5.3L VIN Z, Engine Performance Wiring Diagram (3 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN Z, Engine Performance Wiring Diagram (3 of 5) for GMC Sierra Classic HD 2007 2500:

• (4l60e)
• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Brk fuse 10a
• C12
• C2 c12
• Camshaft position sensor (top center rear of engine)
• Engine oil pressure (eop) sensor (top rear of engine)
• Evaporative emissions (evap) canister purge solenoid (behind throttle body, near front of eng)
• Evaporative emissions canister vent solenoid (10 series: rear fuel tank, 20/30 series: right front side of primary fuel tank)
• F12
• Fuel tank pressure sensor (on fuel tank, integral to fuel pump & sender assembly)
• Hot at all times
• Hot in run
• I/p fuse block (lower left side of dash)
• Manifold absolute pressure sensor (top rear of eng, on intake manifold)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Red
• Red/
• Rev
• S (4l60e)
• S125
• S312
• Stop lps fuse 25a
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Underhood fuse block (left side of eng compt)
• Vehicle speed sensor (rear of transmission/ transfer case)

5.3L VIN Z, Engine Performance Wiring Diagram (4 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN Z, Engine Performance Wiring Diagram (4 of 5) for GMC Sierra Classic HD 2007 2500:

• (driver's floor board, above accelerator pedal) accelerator pedal position sensor
• (in automatic transmission) (4l80e) automatic transmission input shaft speed sensor
• 4ws fuse 15a
• A10
• Act cntrl
• App sens 1
• App sens 2
• Cruise control system
• Cruise req
• Data
• E11
• Ect/ecm fuse 15a
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• Gnd
• Ground
• Hot at all times
• Hot in run & start
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Iat sensor
• Ign
• Ign0 fuse 10a
• Mass airflow (maf)/intake intake air temperature (iat) intake air (between air cleaner assembly & throttle body)
• Pnk
• R/a input
• Red
• Ref low
• S/c input
• S102
• S103
• Signal
• Stp lp in
• Tac ctrl
• Tan
• Throttle actuator control module (left rear of engine compt)
• Throttle body
• Tp sens 1
• Tp sens 2
• Underhood fuse block (left side of eng compt)
• Veh stop fuse 15a

5.3L VIN Z, Engine Performance Wiring Diagram (5 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN Z, Engine Performance Wiring Diagram (5 of 5) for GMC Sierra Classic HD 2007 2500:

• (in ignition coil jumper harness)
• (left side of eng block) g102
• 1-2 ss ctrl
• 2-3 ss ctrl
• 4wd low sig
• A/c system
• A12
• Air conditioning system
• Anti-lock brakes system
• At iss high sig
• At iss low sig
• Axle sw sig
• B10
• B11
• Cfan hi rly
• Clu rly ctrl
• Cooling fans system
• Crank fuse 10a
• Crank volt
• Css sig
• Ctrl
• Cycle sig
• Delivered torq
• Evap canp ctrl
• Evap vent ctrl
• Exc seo
• Fuel lev sens
• Fuel lev sig
• Fuel press sig
• G103 (right rear of engine block)
• Gnd
• Ho2s htr low
• Ho2s low ctrl
• Hot at all times
• Hot in run & start
• Hot in start
• Iat sig
• Ign
• Ign ctrl
• Ign feed
• Ignition coils
• Ind ctrl
• Instrument cluster system
• Instrument panel cluster
• Ipc/dic fuse 10a
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi ctrl
• Pc sol lo ctrl
• Pcm1 fuse 15a
• Pmp rly ctrl
• Pnk
• Pnk d
• Powertrain control module (left front of engine compt)
• Press sens sig
• Prnd c sig
• Red
• Red c
• Ref lo
• Ref low
• Rpm out
• S103
• S151
• S153
• S157
• S159
• S160
• Seo
• Seo b1 fuse 15a
• Spark plug
• Starting/charging system
• Tan
• Tcc pwm ctrl
• Tcc sol ctrl
• Tft sens sig
• Transmissions system
• Underhood fuse block (left side of eng compt)
• Vss high sig
• Vss low sig
• Vss out

6.0L VIN N

6.0L VIN N, Engine Performance Wiring Diagram (1 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN N, Engine Performance Wiring Diagram (1 of 5) for GMC Sierra Classic HD 2007 2500:

• (below steering column) data link connector
• (lower right rear of eng block) crankshaft position (ckp) sensor
• +5v
• 3-2 ss ctrl
• A/c system
• Anti-lock brakes sys
• Brk sw sig
• C10
• Cfan lo rly
• Ckp sig
• Cls 2 data
• Cmp sig
• Cooling fans system
• Cpp sw sig
• D10
• E10
• E11
• Ect sig
• Electronic suspension system
• Fuel injectors
• G103 (right rear of eng block)
• Gnd
• Ho2s hi sig
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• I/p fuse block (lower left side of dash)
• Ign
• Ign 0 fuse 10a c1
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Inj1 fuse 15a
• Inj2 fuse 15a
• Ks signal
• Lift/dive sig
• O2a fuse 15a
• O2b fuse 15a
• Oil lev sw sig
• Pcmb fuse 20a
• Pnk
• Pnk a
• Power distribution system
• Powertrain control module (left front of engine compt)
• Prnd a sig
• Prnd b sig
• Prnd p sig
• Range b
• Range c
• Red
• Ref low
• Ref low (a/t)
• Req torq sig
• Rly ctrl
• S103
• S110
• Serial data
• Sp205 (in i/p harness)
• Starting/ charging system
• Tan
• Under- hood fuse block (left c1 side of eng compt)

6.0L VIN N, Engine Performance Wiring Diagram (2 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN N, Engine Performance Wiring Diagram (2 of 5) for GMC Sierra Classic HD 2007 2500:

• (4.8l & 5.3l)
• (6.0l)
• (dual tanks)
• (in secondary fuel tank) fuel pump & sender assembly (secondary)
• (not used)
• (right rear of engine block)
• Engine coolant temperature sensor (front side of left cylinder head)
• Engine oil level switch (right side of oil pan)
• Fuel pump & sender assembly (primary) (0n fuel tank)
• Fuel pump relay
• Fuel pump relay (secondary) (dual tanks) (in underhood fuse block)
• G103
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• G110 (left front body mount)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after catalytic converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after catalytic converter)
• Hot at all times
• Hot in run & start
• Knock sensor 1 (under intake manifold)
• Knock sensor 2 (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pcm b fuse 20a
• Pnk
• Red
• S103
• Sba fuse 15a
• Tan
• Underhood fuse block (left side of eng compt)

6.0L VIN N, Engine Performance Wiring Diagram (3 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN N, Engine Performance Wiring Diagram (3 of 5) for GMC Sierra Classic HD 2007 2500:

• (4l60e)
• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Brk fuse 10a
• C12
• C2 c12
• Camshaft position sensor (top center rear of engine)
• Engine oil pressure (eop) sensor (top rear of engine)
• Evaporative emissions (evap) canister purge solenoid (behind throttle body, near front of eng)
• Evaporative emissions canister vent solenoid (10 series: rear fuel tank, 20/30 series: right front side of primary fuel tank)
• F12
• Fuel tank pressure sensor (on fuel tank, integral to fuel pump & sender assembly)
• Hot at all times
• Hot in run
• I/p fuse block (lower left side of dash)
• Manifold absolute pressure sensor (top rear of eng, on intake manifold)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Red
• Red/
• Rev
• S (4l60e)
• S125
• S312
• Stop lps fuse 25a
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Underhood fuse block (left side of eng compt)
• Vehicle speed sensor (rear of transmission/ transfer case)

6.0L VIN N, Engine Performance Wiring Diagram (4 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN N, Engine Performance Wiring Diagram (4 of 5) for GMC Sierra Classic HD 2007 2500:

• (driver's floor board, above accelerator pedal) accelerator pedal position sensor
• (in automatic transmission) (4l80e) automatic transmission input shaft speed sensor
• 4ws fuse 15a
• A10
• Act cntrl
• App sens 1
• App sens 2
• Cruise control system
• Cruise req
• Data
• E11
• Ect/ecm fuse 15a
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• Gnd
• Ground
• Hot at all times
• Hot in run & start
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Iat sensor
• Ign
• Ign0 fuse 10a
• Mass airflow (maf)/intake intake air temperature (iat) intake air (between air cleaner assembly & throttle body)
• Pnk
• R/a input
• Red
• Ref low
• S/c input
• S102
• S103
• Signal
• Stp lp in
• Tac ctrl
• Tan
• Throttle actuator control module (left rear of engine compt)
• Throttle body
• Tp sens 1
• Tp sens 2
• Underhood fuse block (left side of eng compt)
• Veh stop fuse 15a

6.0L VIN N, Engine Performance Wiring Diagram (5 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN N, Engine Performance Wiring Diagram (5 of 5) for GMC Sierra Classic HD 2007 2500:

• (in ignition coil jumper harness)
• (left side of eng block) g102
• 1-2 ss ctrl
• 2-3 ss ctrl
• 4wd low sig
• A/c system
• A12
• Air conditioning system
• Anti-lock brakes system
• At iss high sig
• At iss low sig
• Axle sw sig
• B10
• B11
• Cfan hi rly
• Clu rly ctrl
• Cooling fans system
• Crank fuse 10a
• Crank volt
• Css sig
• Ctrl
• Cycle sig
• Delivered torq
• Evap canp ctrl
• Evap vent ctrl
• Exc seo
• Fuel lev sens
• Fuel lev sig
• Fuel press sig
• G103 (right rear of engine block)
• Gnd
• Ho2s htr low
• Ho2s low ctrl
• Hot at all times
• Hot in run & start
• Hot in start
• Iat sig
• Ign
• Ign ctrl
• Ign feed
• Ignition coils
• Ind ctrl
• Instrument cluster system
• Instrument panel cluster
• Ipc/dic fuse 10a
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi ctrl
• Pc sol lo ctrl
• Pcm1 fuse 15a
• Pmp rly ctrl
• Pnk
• Pnk d
• Powertrain control module (left front of engine compt)
• Press sens sig
• Prnd c sig
• Red
• Red c
• Ref lo
• Ref low
• Rpm out
• S103
• S151
• S153
• S157
• S159
• S160
• Seo
• Seo b1 fuse 15a
• Spark plug
• Starting/charging system
• Tan
• Tcc pwm ctrl
• Tcc sol ctrl
• Tft sens sig
• Transmissions system
• Underhood fuse block (left side of eng compt)
• Vss high sig
• Vss low sig
• Vss out

6.0L VIN U

6.0L VIN U, Engine Performance Wiring Diagram (1 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN U, Engine Performance Wiring Diagram (1 of 5) for GMC Sierra Classic HD 2007 2500:

• (below steering column) data link connector
• (lower right rear of eng block) crankshaft position (ckp) sensor
• +5v
• 3-2 ss ctrl
• A/c system
• Anti-lock brakes sys
• Brk sw sig
• C10
• Cfan lo rly
• Ckp sig
• Cls 2 data
• Cmp sig
• Cooling fans system
• Cpp sw sig
• D10
• E10
• E11
• Ect sig
• Electronic suspension system
• Fuel injectors
• G103 (right rear of eng block)
• Gnd
• Ho2s hi sig
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• I/p fuse block (lower left side of dash)
• Ign
• Ign 0 fuse 10a c1
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Inj1 fuse 15a
• Inj2 fuse 15a
• Ks signal
• Lift/dive sig
• O2a fuse 15a
• O2b fuse 15a
• Oil lev sw sig
• Pcmb fuse 20a
• Pnk
• Pnk a
• Power distribution system
• Powertrain control module (left front of engine compt)
• Prnd a sig
• Prnd b sig
• Prnd p sig
• Range b
• Range c
• Red
• Ref low
• Ref low (a/t)
• Req torq sig
• Rly ctrl
• S103
• S110
• Serial data
• Sp205 (in i/p harness)
• Starting/ charging system
• Tan
• Under- hood fuse block (left c1 side of eng compt)

6.0L VIN U, Engine Performance Wiring Diagram (2 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN U, Engine Performance Wiring Diagram (2 of 5) for GMC Sierra Classic HD 2007 2500:

• (4.8l & 5.3l)
• (6.0l)
• (dual tanks)
• (in secondary fuel tank) fuel pump & sender assembly (secondary)
• (not used)
• (right rear of engine block)
• Engine coolant temperature sensor (front side of left cylinder head)
• Engine oil level switch (right side of oil pan)
• Fuel pump & sender assembly (primary) (0n fuel tank)
• Fuel pump relay
• Fuel pump relay (secondary) (dual tanks) (in underhood fuse block)
• G103
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• G110 (left front body mount)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after catalytic converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after catalytic converter)
• Hot at all times
• Hot in run & start
• Knock sensor 1 (under intake manifold)
• Knock sensor 2 (under intake manifold)
• Nca
• Park/neutral position switch (left side of transmission)
• Pcm b fuse 20a
• Pnk
• Red
• S103
• Sba fuse 15a
• Tan
• Underhood fuse block (left side of eng compt)

6.0L VIN U, Engine Performance Wiring Diagram (3 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN U, Engine Performance Wiring Diagram (3 of 5) for GMC Sierra Classic HD 2007 2500:

• (4l60e)
• 1-2 sol
• 2-3 sol
• 3-2 sol
• A red
• A/t fluid pressure manual valve position switch
• Automatic transaxle
• Brk fuse 10a
• C12
• C2 c12
• Camshaft position sensor (top center rear of engine)
• Engine oil pressure (eop) sensor (top rear of engine)
• Evaporative emissions (evap) canister purge solenoid (behind throttle body, near front of eng)
• Evaporative emissions canister vent solenoid (10 series: rear fuel tank, 20/30 series: right front side of primary fuel tank)
• F12
• Fuel tank pressure sensor (on fuel tank, integral to fuel pump & sender assembly)
• Hot at all times
• Hot in run
• I/p fuse block (lower left side of dash)
• Manifold absolute pressure sensor (top rear of eng, on intake manifold)
• N pnk
• P red
• Pc sol valve
• Pnk
• Pnk a
• Red
• Red/
• Rev
• S (4l60e)
• S125
• S312
• Stop lps fuse 25a
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Tcc pwm sol
• Tcc sol
• Tft sensor
• Underhood fuse block (left side of eng compt)
• Vehicle speed sensor (rear of transmission/ transfer case)

6.0L VIN U, Engine Performance Wiring Diagram (4 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN U, Engine Performance Wiring Diagram (4 of 5) for GMC Sierra Classic HD 2007 2500:

• (driver's floor board, above accelerator pedal) accelerator pedal position sensor
• (in automatic transmission) (4l80e) automatic transmission input shaft speed sensor
• 4ws fuse 15a
• A10
• Act cntrl
• App sens 1
• App sens 2
• Cruise control system
• Cruise req
• Data
• E11
• Ect/ecm fuse 15a
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• Gnd
• Ground
• Hot at all times
• Hot in run & start
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Iat sensor
• Ign
• Ign0 fuse 10a
• Mass airflow (maf)/intake intake air temperature (iat) intake air (between air cleaner assembly & throttle body)
• Pnk
• R/a input
• Red
• Ref low
• S/c input
• S102
• S103
• Signal
• Stp lp in
• Tac ctrl
• Tan
• Throttle actuator control module (left rear of engine compt)
• Throttle body
• Tp sens 1
• Tp sens 2
• Underhood fuse block (left side of eng compt)
• Veh stop fuse 15a

6.0L VIN U, Engine Performance Wiring Diagram (5 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN U, Engine Performance Wiring Diagram (5 of 5) for GMC Sierra Classic HD 2007 2500:

• (in ignition coil jumper harness)
• (left side of eng block) g102
• 1-2 ss ctrl
• 2-3 ss ctrl
• 4wd low sig
• A/c system
• A12
• Air conditioning system
• Anti-lock brakes system
• At iss high sig
• At iss low sig
• Axle sw sig
• B10
• B11
• Cfan hi rly
• Clu rly ctrl
• Cooling fans system
• Crank fuse 10a
• Crank volt
• Css sig
• Ctrl
• Cycle sig
• Delivered torq
• Evap canp ctrl
• Evap vent ctrl
• Exc seo
• Fuel lev sens
• Fuel lev sig
• Fuel press sig
• G103 (right rear of engine block)
• Gnd
• Ho2s htr low
• Ho2s low ctrl
• Hot at all times
• Hot in run & start
• Hot in start
• Iat sig
• Ign
• Ign ctrl
• Ign feed
• Ignition coils
• Ind ctrl
• Instrument cluster system
• Instrument panel cluster
• Ipc/dic fuse 10a
• Maf sig
• Malfunction indicator lamp
• Map sig
• Mil ctrl
• Nca
• Nca nca
• Pc sol hi ctrl
• Pc sol lo ctrl
• Pcm1 fuse 15a
• Pmp rly ctrl
• Pnk
• Pnk d
• Powertrain control module (left front of engine compt)
• Press sens sig
• Prnd c sig
• Red
• Red c
• Ref lo
• Ref low
• Rpm out
• S103
• S151
• S153
• S157
• S159
• S160
• Seo
• Seo b1 fuse 15a
• Spark plug
• Starting/charging system
• Tan
• Tcc pwm ctrl
• Tcc sol ctrl
• Tft sens sig
• Transmissions system
• Underhood fuse block (left side of eng compt)
• Vss high sig
• Vss low sig
• Vss out

6.6L VIN 2

6.6L VIN 2, Engine Performance Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500:

• (on left rear side of engine block) engine oil pressure (eop) sensor
• (right side of engine) exhaust gas recirculation (egr) valve
• 4wd low sig
• 5v ref
• App sensor 2 sig
• B tan
• Camshaft position sensor (front of engine, near cooling fan pulley)
• Cmp sensor sig
• Coolant level sig
• Coolant level switch (in coolant reservoir)
• Cpp sw sig
• Crank volt
• Cruise control system
• Cruise on sw sig
• Cruise resume sw sig
• Cruise set sw sig
• Ect sensor sig
• Egr val pos sig
• Eng shutoff sig
• Engine control module (left front of engine compt)
• Engine coolant temperature sensor (top of engine, near oil filter tube)
• Engine oil level switch (left rear of oil pan)
• Fuel press
• Fuel press volt
• G103 (on right rear of engine block)
• G103 (right rear of engine block)
• G104 (lower left side of engine)
• G108 (lower left side of engine)
• Iat sensor 2 sig
• Iat sensor sig
• Inj + group 1
• Inj + group 2
• Inj + group 3
• Inj + group 4
• Inj 3
• Inj 4
• Inj 5
• Inj 6
• Inj 7
• Inj 8
• Low ref
• Maf sensor sig
• Nca
• Oil level sw sig
• Oil press sig
• Pnk
• Pto on sw sig
• Pto sig
• S102
• S170
• Starter enable
• Starting/ charging system
• Starting/charging system
• Tan
• Transmission system
• Tur vane pos
• Tur vane pos sig
• Turbocharger sig
• Turbocharger vane position control solenoid valve
• Water in fuel sensor (on fuel filter element)

6.6L VIN 2, Engine Performance Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500:

• (or 2500)
• (or 2501)
• 125a
• A/t
• Accelerator pedal position sensor
• Bus +
• Bus -
• Computer data lines system
• G108 (lower left side of eng)
• Glow plug 1 +
• Glow plug 2 +
• Glow plug 3 +
• Glow plug 4 +
• Glow plug 5 +
• Glow plug 6 +
• Glow plug 7 +
• Glow plug 8 +
• Glow plug control module (gpm)
• Glow plug fuse
• Glow plugs
• Grd
• Hb03
• Hb11
• Hb12
• Hb13
• Hb14
• Hb15
• Hb16
• Hb17
• Hb18
• Hot at all times
• Iah comm 1
• Iah comm 2
• Iah current sig
• Iah sig
• Iah temp sig
• Iah volt sig
• Ic180
• Ic181
• Ic182
• Ic183
• Ic184
• Ic185
• Ign 0 +
• Ign 1 +
• Intake air heater (iah) module
• M/t
• Nca
• Pnk
• Power distribution system
• Red
• Tan

6.6L VIN 2, Engine Performance Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500:

• 175a
• Axle sw sig
• Backup volt
• Body relay block
• Brk fuse 10a
• C12
• Ckp sensor sig
• Clutch pedal position switch
• E11
• Ecm 1 fuse 15a
• Engine control module (left front of engine compt)
• Exterior lights system
• Frp sensor sig
• Fuel pressure regulator
• G108 (lower left side of engine)
• Hot at all times
• Hot in acc, run & start
• Hot in run
• Hot in run & start
• I/p fuse block (lower left side of dash)
• Ign 0 fuse 10a c1
• Ign 1 +
• Inj 1
• Inj 2
• Intake air heater fuse
• Intake air temperature (iat) sensor 2 (in air induction tube)
• Low ref
• Mass airflow (maf)/intake air temperature (iat) sensor (between air cleaner assembly & throttle body)
• Nca
• Pnk
• Red
• Stoplamp switch (top of brake pedal bracket)
• Tan
• Transmission system
• Tur van pos
• Under- hood fuse block (left side eng compt) c1
• Water in fuel

6.6L VIN 2, Engine Performance Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500:

• (in engine harness)
• Actuator fuse 15a
• Closed below 8 deg c (46 deg f)
• Ecm b fuse 20a
• Ecm fuse 25a
• Ecm relay
• F/ pmp relay
• Fuel heater (top of fuel filter element)
• Fuel htr fuse 15a
• Fuel injectors
• Fuel rail pressure sensor (under intake manifold shield, on fuel rail)
• G103 (right rear of engine block)
• G104 (lower left side of engine)
• Hot at all times
• Hot in run & start
• Nca
• Pnk
• S102
• S144
• S166 (in forward lamp harness)
• S167
• S181
• S182
• Tan
• Under- hood fuse block (left side of engine block)

6.6L VIN 2, Engine Performance Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500:

• (behind right side of dash, near right "a" pillar) g200
• (in engine harness) s163
• Crankshaft position sensor (right side of engine)
• Cruise control system
• Cruise fuse 10a
• Fog lp fuse 15a
• Fuel pump (left side frame rail)
• G103 (on right rear of engine block)
• G110 (left front body mount)
• Hot at all times
• Hot in run
• I/p fuse block (lower left side of dash)
• Ind logic
• Interior lights system
• Manifold absolute pressure (map) sensor (mounted to intake air tube, in front of intake air heater)
• Nca
• Off
• Pnk
• Power take off relay (near underhood fuse block)
• Power take off switch
• S177
• S205
• S224
• Set
• Tan
• Turbocharger vane position sensor
• Underhood fuse block (left side of engine block)

6.6L VIN 2, Engine Performance Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500:

• 5-speed a/t
• 5v ref
• 6-speed m/t
• 8s8
• A/c compress
• A/c refrig sig
• A/c system
• Allison transmission
• Anti-lock brakes system
• App sensor 1 sig
• B11
• Charge ind
• Chmsl +
• Class 2 serial
• Computer data lines system
• Data bus +
• Data bus -
• Ecm relay
• Egr motor high
• Egr motor low
• Eng speed sig
• Engine control module (left front of engine compt)
• Exc 8s8
• Exterior lights system
• Fuel level sensor sig
• Fuel level sig
• Fuel pump
• Fuel rail temperature (frt) sensor (2-speed manual shift: left side of transfer case, 2-speed electric shift: left rear of transfer case)
• Fuel temp sig
• G102 (on right side of engine block)
• Generator 2 sig
• Generator sig
• Grd
• Hot at all times
• Ign 0 +
• Ign 1 +
• Instrument cluster system
• Instrument panel cluster
• Internal mode switch
• Ipc/dic fuse 10a
• Low ref
• Malfunction indicator lamp
• Mil control
• Park/neutral sig
• Pnk
• Pto control
• Rpm out
• S103
• Seo b1 fuse 15a
• Starting/ charging system
• Tan
• Tcc brake sig
• Transmission control module (left front of engine compt)
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (left rear side of trans)
• Vehicle speed sig
• Vss low sig
• Vss sig
• Wait to start
• Wait to start ind

6.6L VIN D

6.6L VIN D, Engine Performance Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN D, Engine Performance Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500:

• (on left rear side of engine block) engine oil pressure (eop) sensor
• (right side of engine) exhaust gas recirculation (egr) valve
• 4wd low sig
• 5v ref
• App sensor 2 sig
• B tan
• Camshaft position sensor (front of engine, near cooling fan pulley)
• Cmp sensor sig
• Coolant level sig
• Coolant level switch (in coolant reservoir)
• Cpp sw sig
• Crank volt
• Cruise control system
• Cruise on sw sig
• Cruise resume sw sig
• Cruise set sw sig
• Ect sensor sig
• Egr val pos sig
• Eng shutoff sig
• Engine control module (left front of engine compt)
• Engine coolant temperature sensor (top of engine, near oil filter tube)
• Engine oil level switch (left rear of oil pan)
• Fuel press
• Fuel press volt
• G103 (on right rear of engine block)
• G103 (right rear of engine block)
• G104 (lower left side of engine)
• G108 (lower left side of engine)
• Iat sensor 2 sig
• Iat sensor sig
• Inj + group 1
• Inj + group 2
• Inj + group 3
• Inj + group 4
• Inj 3
• Inj 4
• Inj 5
• Inj 6
• Inj 7
• Inj 8
• Low ref
• Maf sensor sig
• Nca
• Oil level sw sig
• Oil press sig
• Pnk
• Pto on sw sig
• Pto sig
• S102
• S170
• Starter enable
• Starting/ charging system
• Starting/charging system
• Tan
• Transmission system
• Tur vane pos
• Tur vane pos sig
• Turbocharger sig
• Turbocharger vane position control solenoid valve
• Water in fuel sensor (on fuel filter element)

6.6L VIN D, Engine Performance Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN D, Engine Performance Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500:

• (or 2500)
• (or 2501)
• 125a
• A/t
• Accelerator pedal position sensor
• Bus +
• Bus -
• Computer data lines system
• G108 (lower left side of eng)
• Glow plug 1 +
• Glow plug 2 +
• Glow plug 3 +
• Glow plug 4 +
• Glow plug 5 +
• Glow plug 6 +
• Glow plug 7 +
• Glow plug 8 +
• Glow plug control module (gpm)
• Glow plug fuse
• Glow plugs
• Grd
• Hb03
• Hb11
• Hb12
• Hb13
• Hb14
• Hb15
• Hb16
• Hb17
• Hb18
• Hot at all times
• Iah comm 1
• Iah comm 2
• Iah current sig
• Iah sig
• Iah temp sig
• Iah volt sig
• Ic180
• Ic181
• Ic182
• Ic183
• Ic184
• Ic185
• Ign 0 +
• Ign 1 +
• Intake air heater (iah) module
• M/t
• Nca
• Pnk
• Power distribution system
• Red
• Tan

6.6L VIN D, Engine Performance Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN D, Engine Performance Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500:

• 175a
• Axle sw sig
• Backup volt
• Body relay block
• Brk fuse 10a
• C12
• Ckp sensor sig
• Clutch pedal position switch
• E11
• Ecm 1 fuse 15a
• Engine control module (left front of engine compt)
• Exterior lights system
• Frp sensor sig
• Fuel pressure regulator
• G108 (lower left side of engine)
• Hot at all times
• Hot in acc, run & start
• Hot in run
• Hot in run & start
• I/p fuse block (lower left side of dash)
• Ign 0 fuse 10a c1
• Ign 1 +
• Inj 1
• Inj 2
• Intake air heater fuse
• Intake air temperature (iat) sensor 2 (in air induction tube)
• Low ref
• Mass airflow (maf)/intake air temperature (iat) sensor (between air cleaner assembly & throttle body)
• Nca
• Pnk
• Red
• Stoplamp switch (top of brake pedal bracket)
• Tan
• Transmission system
• Tur van pos
• Under- hood fuse block (left side eng compt) c1
• Water in fuel

6.6L VIN D, Engine Performance Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN D, Engine Performance Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500:

• (in engine harness)
• Actuator fuse 15a
• Closed below 8 deg c (46 deg f)
• Ecm b fuse 20a
• Ecm fuse 25a
• Ecm relay
• F/ pmp relay
• Fuel heater (top of fuel filter element)
• Fuel htr fuse 15a
• Fuel injectors
• Fuel rail pressure sensor (under intake manifold shield, on fuel rail)
• G103 (right rear of engine block)
• G104 (lower left side of engine)
• Hot at all times
• Hot in run & start
• Nca
• Pnk
• S102
• S144
• S166 (in forward lamp harness)
• S167
• S181
• S182
• Tan
• Under- hood fuse block (left side of engine block)

6.6L VIN D, Engine Performance Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN D, Engine Performance Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500:

• (behind right side of dash, near right "a" pillar) g200
• (in engine harness) s163
• Crankshaft position sensor (right side of engine)
• Cruise control system
• Cruise fuse 10a
• Fog lp fuse 15a
• Fuel pump (left side frame rail)
• G103 (on right rear of engine block)
• G110 (left front body mount)
• Hot at all times
• Hot in run
• I/p fuse block (lower left side of dash)
• Ind logic
• Interior lights system
• Manifold absolute pressure (map) sensor (mounted to intake air tube, in front of intake air heater)
• Nca
• Off
• Pnk
• Power take off relay (near underhood fuse block)
• Power take off switch
• S177
• S205
• S224
• Set
• Tan
• Turbocharger vane position sensor
• Underhood fuse block (left side of engine block)

6.6L VIN D, Engine Performance Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN D, Engine Performance Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500:

• 5-speed a/t
• 5v ref
• 6-speed m/t
• 8s8
• A/c compress
• A/c refrig sig
• A/c system
• Allison transmission
• Anti-lock brakes system
• App sensor 1 sig
• B11
• Charge ind
• Chmsl +
• Class 2 serial
• Computer data lines system
• Data bus +
• Data bus -
• Ecm relay
• Egr motor high
• Egr motor low
• Eng speed sig
• Engine control module (left front of engine compt)
• Exc 8s8
• Exterior lights system
• Fuel level sensor sig
• Fuel level sig
• Fuel pump
• Fuel rail temperature (frt) sensor (2-speed manual shift: left side of transfer case, 2-speed electric shift: left rear of transfer case)
• Fuel temp sig
• G102 (on right side of engine block)
• Generator 2 sig
• Generator sig
• Grd
• Hot at all times
• Ign 0 +
• Ign 1 +
• Instrument cluster system
• Instrument panel cluster
• Internal mode switch
• Ipc/dic fuse 10a
• Low ref
• Malfunction indicator lamp
• Mil control
• Park/neutral sig
• Pnk
• Pto control
• Rpm out
• S103
• Seo b1 fuse 15a
• Starting/ charging system
• Tan
• Tcc brake sig
• Transmission control module (left front of engine compt)
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (left rear side of trans)
• Vehicle speed sig
• Vss low sig
• Vss sig
• Wait to start
• Wait to start ind

8.1L VIN G

8.1L VIN G, Engine Performance Wiring Diagram (1 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (1 of 5) for GMC Sierra Classic HD 2007 2500:

• (below steering column) data link connector
• (in injector jumper harness)
• (m/t)
• +5v
• A/c system
• Anti-lock brakes sys
• Brk sw sig
• C2 c9
• Ckp sig
• Cls 2 data
• Cmp sig
• Cpp sw sig
• Crankshaft position (ckp) sensor (behind left valve cover)
• D10
• E11
• Ect sig
• G103 (right rear of engine block)
• Gnd
• Ho2s hi sig
• Ho2s lo
• Hot at all times
• Hot in accy, run & start
• Hot in run & start
• I/p fuse block (lower left side of dash)
• Ign
• Ign 0 fuse 10a
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Inj1 fuse 15a
• Inj2 fuse 15a
• Injectors
• Ks signal
• Lev sw sig
• O2a fuse 15a
• O2b fuse 15a
• Oil lev sw sig
• P/n sig
• Pcmb fuse 20a
• Pnk
• Pnk a
• Power distribution system
• Powertrain control module (pcm) (left front of engine compt)
• Pto enable sw
• Pto eng kill
• Pto engage
• Pto status
• Ref low
• Req torq sig
• Rly ctrl
• S103
• S110
• S152
• S154
• Serial data
• Sp205 (in i/p harness)
• Starting/ charging system
• Tan
• Underhood fuse block (left side of eng compt)

8.1L VIN G, Engine Performance Wiring Diagram (2 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (2 of 5) for GMC Sierra Classic HD 2007 2500:

• (dual tanks)
• (in secondary fuel tank) fuel pump & sender assembly (secondary)
• (left rear of engine block) g104
• (right rear of engine block)
• Allison transmission
• Coolant level switch (in coolant reservoir)
• Engine coolant temperature sensor (middle of right cylinder head)
• Engine oil level switch (right side of oil pan)
• F/ pump relay
• Fuel pump & sender assembly (primary) (in primary fuel tank)
• Fuel pump relay (secondary) (dual tanks) (on underhood fuse block bracket)
• G103
• G104 (left rear of engine block)
• G110 (left front body mount)
• Heated oxygen sensor (bank 1 sensor 1) (left exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 1 sensor 2) (left exh pipe, after catalytic converter)
• Heated oxygen sensor (bank 2 sensor 1) (right exh pipe, before catalytic converter)
• Heated oxygen sensor (bank 2 sensor 2) (right exh pipe, after catalytic converter)
• Hot at all times
• Hot in run & start
• Internal mode switch
• Knock sensor bank 1 (left side of engine)
• Knock sensor bank 2 (on right side of engine, forward of starter)
• Nca
• Pcm b fuse 20a
• Pnk
• Pnk d
• S102
• S103
• Sba fuse 15a
• Tan
• Tan a
• Transmissions system
• Underhood fuse block (left side of eng compt)

8.1L VIN G, Engine Performance Wiring Diagram (3 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (3 of 5) for GMC Sierra Classic HD 2007 2500:

• (behind right side of dash, near right "a" pillar) g200
• (in engine harness) s163
• Brk fuse 10a
• C12
• C2 c12
• Camshaft position sensor (left side of timing cover)
• Cruise control system
• Cruise fuse 10a
• Engine oil pressure (eop) sensor (top rear of engine)
• Evaporative emissions (evap) canister purge solenoid (left side of throttle body, near left of engine)
• Evaporative emissions canister vent solenoid (right front side of primary fuel tank)
• F12
• Fog lp fuse 15a
• Fuel tank pressure sensor (on fuel tank, integral to fuel pump & sender assembly)
• Hot at all times
• Hot in run
• I/p fuse block (lower left side of dash)
• Ind logic
• Interior lights system
• Manifold absolute pressure sensor (top rear of engine, on intake manifold)
• Off
• Pnk
• Pnk a
• Power take off relay (near underhood fuse block)
• Power take off switch
• Red
• S164 (in i/p harness)
• S205
• S224
• S312
• Set
• Stop lp fuse 25a
• Stop- lamp switch (top of brake pedal bracket)
• Tan
• Transmissions system
• Under- hood fuse block (left side of eng compt)
• Underhood fuse block (left side of eng compt)
• Vehicle speed sensor (left rear of transmission/ transfer case)

8.1L VIN G, Engine Performance Wiring Diagram (4 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (4 of 5) for GMC Sierra Classic HD 2007 2500:

• (driver's floor board, above accelerator pedal) accelerator pedal position sensor
• 4ws fuse 15a
• A10
• Act cntrl
• App sens 1
• App sens 2
• Cruise control system
• Cruise req
• Data
• Ect/ecm fuse 15a
• G103 (right rear of engine block)
• G104 (left rear of engine block)
• Gnd
• Ground
• Hot at all times
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Iat sensor
• Ign
• Mass airflow (maf)/intake air temperature (iat) sensor (between air cleaner assembly & throttle body)
• Pnk
• R/a input
• Red
• Ref low
• S/c input
• S102
• S103
• Signal
• Stp lp in
• Tac ctrl
• Tan
• Throttle actuator control module (left rear of engine compt)
• Throttle body
• Tp sens 1
• Tp sens 2
• Underhood fuse block (left side of engine compt)
• Veh stop fuse 15a

8.1L VIN G, Engine Performance Wiring Diagram (5 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (5 of 5) for GMC Sierra Classic HD 2007 2500:

• (in engine harness)
• (in ignition coil jumper harness)
• (left side of engine block) g102
• 400 (or 821)
• 4wd circuit (transfer case control)
• 4wd low sig
• A/c system
• A/t
• A12
• Anti-lock brakes system
• Axle sw sig
• B10
• B11
• Clu rly ctrl
• Clutch sw
• Crank fuse 10a
• Crank volt
• Ctrl
• Delivered torq
• Evap canp ctrl
• Evap vent ctrl
• Exc seo
• Fuel lev sens
• Fuel lev sig
• Fuel press sig
• G103 (right rear of engine block)
• Gen
• Gnd
• Ho2s htr low
• Ho2s low ctrl
• Hot at all times
• Hot in run & start
• Hot in start
• Iat sig
• Ign
• Ign ctrl
• Ign feed
• Ignition coils
• Ind ctrl
• Instrument cluster system
• Instrument panel cluster
• Ipc/dic fuse 10a
• Logic
• M/t
• Maf sig
• Map sig
• Mil
• Mil ctrl
• Mil request
• Nca
• Nca nca
• Pcm1 fuse 15a
• Pmp rly ctrl
• Pnk
• Pnk d
• Powertrain control module (pcm) (left front of engine compt)
• Press sens sig
• Red
• Red c
• Ref lo
• Ref low
• Rpm out
• S103
• S151
• S153
• S157
• S159
• S160
• S165
• Seo
• Seo b1 fuse 15a
• Spark plug
• Starting system
• Starting/charging system
• Tan
• Torque sig
• Trans- mission control module (left front of eng compt)
• Transmissions system
• Under- hood fuse block (left side of eng compt)
• Vss high sig
• Vss low sig
• Vss out

EXTERIOR LIGHTS

Back-up Lamps Wiring Diagram, with Allison Automatic Transmission for GMC Sierra Classic HD 2007 2500

List of elements for Back-up Lamps Wiring Diagram, with Allison Automatic Transmission for GMC Sierra Classic HD 2007 2500:

• (30 series exc chassis cab/20 series w/ hvy) (10-20 series exc hvy) (30 series chassis cab)
• (left side body mount) (spare tire hoist bracket) (left rear body mount)
• A (chev) (gmc) b
• A11
• Allison transmission
• B/u lmp vlt
• B12
• Back-up alarm
• Battery
• Body control module (bcm) (on lower left side of dash, below steering column)
• C h
• C175
• Computer data lines system
• Diesel
• Engine control module (at left front of engine compt)
• F10
• G302 g401 g403
• G403 (on left rear body mount)
• Hot at all times
• I/p fuse block (on lower left side of dash)
• I/p relay block (near left kick panel)
• Left back-up lamp
• Press sw
• Pressure switch manifold
• Rear lamps junction block (inside left frame rail)
• Rev sig
• Right back-up lamp
• Serial data
• Tbc 2b fuse 15a
• Trailer connector
• Transmission control module (at left front of engine compt)
• Trlr b/u fuse 10a
• Underhood fuse block (left side of eng compt)

Back-up Lamps Wiring Diagram, without Allison Automatic Transmission for GMC Sierra Classic HD 2007 2500

List of elements for Back-up Lamps Wiring Diagram, without Allison Automatic Transmission for GMC Sierra Classic HD 2007 2500:

• (30 series exc chassis cab/20 series w/ hvy) (10-20 series exc hvy) (30 series chassis cab)
• (left side body mount) (spare tire hoist bracket) (left rear body mount)
• (near left kick panel) i/p relay block
• (on transmission) back-up lamp switch
• A (chev) (gmc) b
• A/t
• A11
• B/u lmp vlt
• B/u lmps sig
• B/u lp fuse 20a
• Back-up alarm
• Body control module (bcm) (on lower left side of dash, below steering column)
• C h
• Diesel
• Engine control module (ecm) (left front of eng compt)
• F10
• G302 g401 g403
• G403 (on left rear body mount)
• Hot in run or start
• Left back-up lamp
• M/t
• Park/neutral position (pnp) switch (left side of transmission)
• Pnk
• Rear lamps junction block (inside left frame rail)
• Right back-up lamp
• Trailer connector
• Trlr b/u fuse 10a
• Underhood fuse block (left side of eng compt)

Exterior Lamps Wiring Diagram (1 of 3) for GMC Sierra Classic HD 2007 2500

List of elements for Exterior Lamps Wiring Diagram (1 of 3) for GMC Sierra Classic HD 2007 2500:

• (30 series exc chassis cab/series w/ hvy) (10/20 series exc hvy) (30 series chassis cab)
• (left side body mount) (spare tire hoist bracket) (left rear body mount)
• (on left rear body mount)
• Auto
• Back-up lamps circuit
• Body control module (bcm) (on lower left side of dash, below steering column)
• C2 b2
• Computer data lines system
• D10
• Emergency vehicle roof lamp relay
• F11
• Frt park fuse 10a
• G100 (lower left radiator support)
• G200 (behind right side of dash, near right "a" pillar)
• G203 (behind left side of dash, near left "a" pillar)
• G302 g401 g403
• G403
• Hazard switch
• Head
• Headlamp switch
• Hot at all times
• Hot in run & start
• I/p relay block
• Ign e fuse 10a
• Left
• Left front marker lamp
• Left front park/ turn signal lamp
• Off
• Park
• Park lp relay
• Pnk
• Prk lmp on
• Prk lmp rly
• Red
• Right
• Right front marker lamp
• Right front park/ turn signal lamp
• S100
• S101
• S215
• S217
• S412
• S413
• S414
• S415
• S416
• S417 (in camper 5th wheel harn, near trailer connector breakout)
• S418
• Serial data
• Stud 1 fuse 40a
• Stud 2 fuse 30a
• Tan
• To trl park fuse (diagram 2 0f 3)
• Trailer connector
• Turn signal/ multi- function switch
• Under- hood fuse block (on left side of engine compt)

Exterior Lamps Wiring Diagram (2 of 3) for GMC Sierra Classic HD 2007 2500

List of elements for Exterior Lamps Wiring Diagram (2 of 3) for GMC Sierra Classic HD 2007 2500:

• (30 series exc chassis cab/series w/ hvy) (10/20 series exc hvy) (30 series chassis cab)
• (left side body mount) (spare tire hoist bracket) (left rear body mount)
• (not used)
• (w/ roof marker lamps)
• (w/ dual wheels)
• (w/ pto)
• (w/o dual wheels)
• A c3
• A12
• Beacon lighting
• C1 b
• C1 d
• C1 g
• C1 h
• C160
• C2 d
• C3 b6
• C3 d
• C3 h
• C4 f
• D12
• E11
• F12
• From a frt park fuse (diagram 1 0f 3)
• Fusible link 5
• G200 (behind right side of dash, near right "a" pillar)
• G302 g401 g403
• G304 (except crewcab) (under right front seat)
• G305 (crewcab) (on left "b" pillar)
• Hot at all times
• I/p junction block (right side of c6 dash)
• I/p relay block
• Int park fuse 10a
• Interior lights system
• Left front clear- ance lamp
• Left license lamp
• Left rear clear- ance lamp
• Left rear turn signal
• Left tail/ stop- lamp
• Lighting
• Lr park fuse 10a
• Rear lamps junction block
• Red
• Right front clear- ance lamp
• Right license lamp
• Right rear clear- ance lamp
• Right rear turn signal
• Right tail/ stop- lamp
• Roof beacon relay (at lower left "b" pillar
• Roof beacon switch
• Rr park fuse 10a
• S206 (in i/p harn)
• S215
• S219 (in brake clutch harn)
• S420 (in license lamp harn)
• S421
• S423
• S424
• Seo b1 fuse 15a
• Seo b2 fuse 30a
• Stop lp fuse 25a
• Stop- lamp switch
• Tailgate marker lamp
• Trl park fuse 10a
• Under- hood fuse block (on left side of engine compt)
• Vehicle roof lamp lighting
• W/ emergency
• W/ roof
• W/ wrecker
• W/dual wheels
• W/o dual wheels
• Wrecker relay

Exterior Lamps Wiring Diagram (3 of 3) for GMC Sierra Classic HD 2007 2500

List of elements for Exterior Lamps Wiring Diagram (3 of 3) for GMC Sierra Classic HD 2007 2500:

• (behind right side of dash, near right "a" pillar)
• (behind right side of dash, near right "a" pillar) g200
• (w/ level 3 convenience package)
• (wire color may vary)
• A10
• A11
• Battery
• C10
• C3 e1
• Center high mounted stop lamp (chmsl)
• Clearance lamps
• Computer data lines system
• Cruise control system
• D10
• Driver door module (ddm) (in driver's door)
• Driver outside rearview mirror
• E10
• Engine controls system
• Ext- erior illum lamp
• F10
• F3 (not used)
• Flash fuse 25a
• Front passenger door module (fpdm) (in right front door)
• G200
• G200 (behind right side of dash, near right "a" pillar)
• G203 (behind left side of dash, near left "a" pillar)
• Ground
• Hazard sw
• Hot at all times
• I/p fuse block (on lower left side of dash)
• I/p junction block (right side of f dash)
• I/p relay block
• I/p relay block (near left kick panel)
• Instrument panel cluster (ipc)
• Left roof marker lamp
• Left turn ind
• Logic
• Lr lamp volt
• Lt door lmp gnd
• Lt door lmp pwr
• Lt trlr st/turn fuse 10a
• Lt turn fuse 10a
• Lt turn sig
• Lt turn sig volt
• Passenger outside rearview mirror
• Red
• Right roof marker lamp
• Right turn ind
• Rr lamp volt
• Rt door lmp gnd
• Rt door lmp pwr
• Rt trlr st/turn fuse 10a
• Rt turn fuse 10a
• Rt turn sig
• Rt turn sig volt
• S200
• S201
• S202
• S345
• Serial data
• Stoplamp sw
• Tan
• Turn ind
• Turn signal/hazard flasher module
• Under- hood fuse block
• Veh chmsl fuse 10a
• Veh stop fuse 15a

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram, Except Hybrid (1 of 4) for GMC Sierra Classic HD 2007 2500

List of elements for Ground Distribution Wiring Diagram, Except Hybrid (1 of 4) for GMC Sierra Classic HD 2007 2500:

• (ground strap from engine to frame rail)
• (right front of engine block)
• (right rear of engine block)
• (right side of dash) mobile radio fuse block
• (w/ allison) transmission control module
• 4.3l engine
• 4.8l, 5.3l & 6.0l
• 8.1l
• A/c compressor clutch
• A/c low pressure switch
• Auxiliary battery relay
• Battery (left)
• Battery (right)
• Brake fluid level switch
• Brake pressure differential switch
• Coolant level switch
• Daytime running lamp (drl) (left)
• Daytime running lamp (drl) (right)
• Diesel
• Engine control module
• Except 4.3l base
• Except 4.3l engine
• Except jc4
• F/pmp relay
• F11
• Fog lamp (left)
• Fog lamp (right)
• G100 (lower left radiator support)
• G102 (gas) (4.3l: lower right front of engine block) (except 4.3l: left side
• G102 (right side of engine block)
• G103
• G104 (left rear of engine block)
• G106
• G107
• Gas
• Gas exc 4.3l
• High beam headlamp (left)
• High beam headlamp (right)
• Horn (left)
• Horn (right)
• Ign 1 relay (gas)
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Ignition coil 7
• Ignition coil 8
• Ignition control module
• Jc4
• Low beam headlamp (left)
• Low beam headlamp (right)
• Of engine block)
• Park/ neutral position switch
• Park/turn signal lamp (left front)
• Park/turn signal lamp (right front)
• S102 (in engine harness)
• S104 (in engine harness)
• S156 (in engine harness)
• S157 (in engine harness)
• S223 (in seo harness)
• Starter relay (diesel)
• Throttle actuator control module
• To s103 (diagram 2 of 4)
• Underhood fuse block (left side of engine compt)
• Upfitter option
• W/ dual horns
• W/aux battery
• W/pto
• Washer fluid level sensor
• Windshield washer fluid pump

Ground Distribution Wiring Diagram, Except Hybrid (2 of 4) for GMC Sierra Classic HD 2007 2500

List of elements for Ground Distribution Wiring Diagram, Except Hybrid (2 of 4) for GMC Sierra Classic HD 2007 2500:

• (10 series) generator battery control module
• (8.1l w/ allison) transmission control module
• (exc flex fuel) c
• (flex fuel) a
• (upfitter option) roof beacon relay
• (upfitter option) roof mounted beacon
• 8.1l
• Active & elect shift transfer case
• Active & manual shift transfer case
• Bucket
• C1 a
• C2 a
• C2 d
• C3 a
• Ckp sensor shield
• Cmp sensor shield
• Crew cab
• Diesel
• Driver seat adjuster switch
• Dual tanks
• Electronic brake control module
• Engine oil level switch
• Exc 8.1l w/o calif lev
• Except 8.1l
• Except crew cab
• From g103 (diagram 1 of 4)
• Front axle actuator
• Fuel heater
• Fuel pressure regulator shield
• Fuel pressure sensor shield
• Fuel pump
• Fuel pump & sender assembly (primary)
• Fuel pump & sender assembly (secondary)
• G103 (right rear of engine block)
• G108 (lower left side of engine)
• G110 (left front body mount)
• G304 (except crew cab) (under right front seat)
• G305 (crew cab) (left "b" pillar)
• G306 (on right "b" pillar)
• G390 (near "c" pillar)
• Gas
• Glow plug control module
• Inflatable restraint passenger presence system module
• Inflatable restraint sensing & diagnostic module
• Intake air temperature (iat)/mass airflow (maf) sensor
• Left rear door latch assembly
• Manual shift transfer case
• Memory seat module
• Memory seat module (driver)
• Nca
• Non- bucket
• Park/ neutral position switch
• Powertrain control module
• Rear window defogger grid
• Red
• Right rear door latch assembly
• S103 (in engine harness)
• S110 (in engine harness)
• S132 (in engine harness)
• S170
• S171
• S174
• S175
• S176
• S177
• S329 (in passenger seat harness)
• Seat adjuster switch (passenger)
• Seat bolster/ lumbar switch (front passenger)
• Transfer case shift control motor
• Transfer case shift control switch
• Water in fuel sensor
• Window switch (right rear)
• Window switch) (left rear)

Ground Distribution Wiring Diagram, Except Hybrid (3 of 4) for GMC Sierra Classic HD 2007 2500

List of elements for Ground Distribution Wiring Diagram, Except Hybrid (3 of 4) for GMC Sierra Classic HD 2007 2500:

• (30 series except chassis cab & 20 series w/hvy) (10-20 series except hvy)
• (7 way) trailer connector
• (base) window/ door lock switch (driver)
• (chassis cab)
• (crew cab) backup alarm
• (except luxury)
• (except luxury) digital radio receiver
• (if equipped) left front shock absorber solenoid
• (if equipped) right front shock absorber solenoid
• (in steering wheel controls harness) s260
• (left front)
• (left rear)
• (luxury) digital radio receiver
• (luxury) rear seat entertainment assembly
• (luxury) vehicle communication interface module
• (on left body mount)
• (on left rear body mount)
• (on spare tire hoist bracket)
• (right front)
• (right rear)
• A12
• Audio amplifier
• B12
• Back-up alarm
• Backup lamp (left)
• Backup lamp (right)
• Body control module
• C1 a8
• C1 c5
• C1 d10
• C1 e
• C2 a
• C2 b6
• C3 b6
• Camper/ 5th wheel trailer wiring provision
• Chevy
• Clearance lamps
• Cruise control module
• Data link connector
• Dual wheels
• Except dual wheels
• From i/p relay block a (diagram 3 of 4)
• G203 (near left "a" pillar)
• G302
• G401
• G403
• Gmc
• Hazard lamps switch
• Headlamp dimmer switch
• Headlamp switch
• Hvac control module
• I/p fuse block (lower left side of dash)
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Ignition key alarm switch
• Inflatable restraint steering wheel module coil
• Instrument panel cluster
• Left rear turn signal lamp
• License lamp (left)
• License lamp (right)
• Luxury
• Multi- function accessory switch
• Nca
• Radio
• Rear lamps junction block (inside of left rear frame rail)
• Rear seat audio controller
• Rear seat entertainment assembly
• Remote playback device (cd player)
• Right rear turn signal lamp
• S213 (in i/p harness)
• S217 (in steering column harn)
• S320
• S413 (right rear lamp harn)
• S423
• S424
• Steering wheel control switch assembly (lower left)
• Steering wheel control switch assembly (lower right)
• Steering wheel control switch assembly (upper left)
• Steering wheel control switch assembly (upper right)
• Tail/stop lamp (left)
• Tail/stop lamp (right)
• Tailgate marker lamp
• Tan
• Tire pressure monitor module
• To i/p relay block (diagram 3 of 4)
• Tow/haul switch
• Traction control switch
• Transfer case shift control module
• Turn signal/ hazard flasher module
• Turn signal/ multifunction switch
• Vehicle communication interface module
• W/ dual wheels
• Window/ door lock switch (passenger)
• Wiper switch

Ground Distribution Wiring Diagram, Except Hybrid (4 of 4) for GMC Sierra Classic HD 2007 2500

List of elements for Ground Distribution Wiring Diagram, Except Hybrid (4 of 4) for GMC Sierra Classic HD 2007 2500:

• (auto a/c) air temp sensor assembly (inside front)
• (auto a/c) air temp sensor assembly (inside rear)
• (base) driver unlock relay
• (except bose or luxury) auxiliary power outlet (front)
• (except bose or luxury) cigar lighter
• (if equipped) inflatable restraint disable switch
• (if equipped) power takeoff switch
• (if equipped) selectable ride switch
• (m/t diesel) clutch start switch
• (not used)
• (upfitter option) emergency vehicle roof lamp relay
• (upfitter option) roof beacon switch
• (upfitter option) wrecker relay
• (w conv package) driver door module
• (w conv package) passenger door module
• (w/o conv package) door latch assembly (driver)
• (w/o conv package) door latch assembly (passenger)
• (w/o conv package) window/ door lock switch (driver)
• (w/o conv package) window/ door lock switch (passenger)
• 10 series
• A/t shift lock solenoid
• A12
• Auto a/c
• Auxiliary power outlet (bin)
• Auxiliary power outlet (console)
• Auxiliary power outlet (front)
• Blower motor control processor
• Blower motor resistor assembly
• C1 a
• C1 b9
• C1 d
• C1 f6
• C2 a
• C2 d
• C3 c
• C355 b
• C4 a
• C5 e
• C7 f
• C8 f
• C9 a
• Center high mounted stop lamp
• Cigar lighter
• Clearance lamps
• Cool/fan relay
• Data link connector
• Dome lamp (front)
• Dome/ reading lamp (rear)
• Exc luxury
• G115 (lower rear of radiator support)
• G200 (behind right side of dash, near right "a" pillar)
• Hd trailering equipment provision
• Headlamp switch
• Hvac control module
• I/p fuse block (lower left side of dash)
• I/p junction block (lower right side of dash)
• I/p relay block (near left kick panel)
• Inside rearview mirror
• Instrument panel cluster
• Lock relay
• Luxury
• Man a/c
• Overhead console
• Pnk
• Rear wheel steering switch
• Recirculation actuator
• Right cooling fan
• Roof marker lamp (left)
• Roof marker lamp (right)
• S205
• S215 (in brake clutch harness)
• S345
• S352
• Sunroof control module
• Sunroof switch
• Transfer case shift control switch
• Underhood cooling fan fuse block (left side of engine compt)
• Unlock relay
• Vanity mirror lamp (left)
• Vanity mirror lamp (right)
• W/ 5 lamp roof marker
• W/o 5 lamp roof marker
• Windshield wiper motor module

Ground Distribution Wiring Diagram, Hybrid (1 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for Ground Distribution Wiring Diagram, Hybrid (1 of 5) for GMC Sierra Classic HD 2007 2500:

• (ground strap from engine to frame rail)
• (left side of engine block)
• (m33) automatic transmission
• A/c compressor clutch
• A/c low pressure switch
• Auxiliary battery relay
• Auxiliary water pump
• Battery (left)
• Brake fluid level switch
• Brake pressure differential switch
• Daytime running lamp (drl) (left)
• Daytime running lamp (drl) (right)
• Except jc4
• F/pmp relay
• Fog lamp (left)
• Fog lamp (right)
• G100 (lower left radiator support)
• G102
• G104 (left rear of engine block)
• G107
• High beam headlamp (left)
• High beam headlamp (right)
• Horn (left)
• Horn (right)
• Ign 1 relay
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Ignition coil 7
• Ignition coil 8
• Jc4
• Low beam headlamp (left)
• Low beam headlamp (right)
• Mobile radio fuse block (right side of dash)
• Park/turn signal lamp (left front)
• Park/turn signal lamp (right front)
• S102 (in engine harness)
• S104 (in engine harness)
• S156 (in engine harness)
• S157 (in engine harness)
• S223 (in seo harness)
• Starter/ generator control module coolant pump
• Throttle actuator control module
• To starter/ generator control module (diagram 5 of 5)
• Underhood fuse block (left side of engine compt)
• Upfitter option
• W/ dual horns
• W/aux battery
• W/pto
• Washer fluid level sensor
• Windshield washer fluid pump

Ground Distribution Wiring Diagram, Hybrid (2 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for Ground Distribution Wiring Diagram, Hybrid (2 of 5) for GMC Sierra Classic HD 2007 2500:

• (upfitter option) roof beacon relay
• (upfitter option) roof mounted beacon
• Active & elect shift transfer case
• Active & manual shift transfer case
• Battery (right)
• Bucket
• C1 a
• C2 a
• C2 d
• C3 a
• Crew cab
• Driver seat adjuster switch
• Dual tanks
• Electro hydraulic power steering module
• Electronic brake control module
• Engine oil level switch
• Except crew cab
• Front axle actuator
• Fuel pump & sender assembly (primary)
• Fuel pump & sender assembly (secondary)
• G103 (right rear of engine block)
• G110 (left front body mount)
• G304 (under right front seat)
• G305 (crew cab) (left "b" pillar)
• G306 (on right "b" pillar)
• G390 (near "c" pillar)
• Hybrid control module
• Inflatable restraint passenger presence system module
• Inflatable restraint sensing & diagnostic module
• Intake air temperature (iat)/mass airflow (maf) sensor
• Left rear door latch assembly
• Manual shift transfer case
• Memory seat module
• Memory seat module (driver)
• Nca
• Non- bucket
• Park/ neutral position switch
• Powertrain control module
• Rear window defogger grid
• Right rear door latch assembly
• S103 (in engine harness)
• S110 (in engine harness)
• S329 (in passenger seat harness)
• Seat adjuster switch (passenger)
• Seat bolster/ lumbar switch (front passenger)
• Transfer case shift control motor
• Transfer case shift control switch
• W/aux battery
• Window switch (left rear)
• Window switch (right rear)

Ground Distribution Wiring Diagram, Hybrid (3 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for Ground Distribution Wiring Diagram, Hybrid (3 of 5) for GMC Sierra Classic HD 2007 2500:

• (7 way) trailer connector
• (base) window/ door lock switch (driver)
• (except luxury)
• (except luxury) digital radio receiver
• (if equipped) left front shock absorber solenoid
• (if equipped) right front shock absorber solenoid
• (in steering wheel controls harness) s260
• (luxury) digital radio receiver
• (luxury) rear seat entertainment assembly
• (luxury) vehicle communication interface module
• A12
• Audio amplifier
• B12
• Backup lamp (left)
• Backup lamp (right)
• Body control module
• C1 a8
• C1 c5
• C1 d10
• C1 e
• C2 a
• C2 b6
• C3 b6
• Chevy
• Cruise control module
• Data link connector
• Electro- hydraulic power steering module
• From i/p relay block b (diagram 3 of 5)
• G203 (near left "a" pillar)
• G401 (on spare tire hoist bracket)
• Gmc
• Hazard lamps switch
• Headlamp dimmer switch
• Headlamp switch
• Hvac control module
• I/p fuse block (lower left side of dash)
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Ignition key alarm switch
• Inflatable restraint steering wheel module coil
• Instrument panel cluster
• Left rear turn signal lamp
• License lamp (left)
• License lamp (right)
• Luxury
• Multi- function accessory switch
• Nca
• Radio
• Rear lamps junction block (inside of left rear frame rail)
• Rear seat audio controller
• Rear seat entertainment assembly
• Remote playback device (cd player)
• Right rear turn signal lamp
• S213 (in i/p harness)
• S216 (in steering column harness)
• S217 (in steering column harn)
• S320
• Steering wheel control switch assembly (lower left)
• Steering wheel control switch assembly (lower right)
• Steering wheel control switch assembly (upper left)
• Steering wheel control switch assembly (upper right)
• Steering wheel speed/ position sensor
• Tail/stop lamp (left)
• Tail/stop lamp (right)
• Tan
• Tire pressure monitor (tpm) module
• To i/p relay block (diagram 3 of 5)
• Tow/haul switch
• Traction control switch
• Transfer case shift control module
• Turn signal/ hazard flasher module
• Turn signal/ multifunction switch
• Vehicle communication interface module
• Window/ door lock switch (passenger)
• Wiper switch

Ground Distribution Wiring Diagram, Hybrid (4 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for Ground Distribution Wiring Diagram, Hybrid (4 of 5) for GMC Sierra Classic HD 2007 2500:

• (auto a/c) air temp sensor assembly (inside front)
• (auto a/c) air temp sensor assembly (inside rear)
• (base) driver unlock relay
• (except bose or luxury) auxiliary power outlet (front)
• (except bose or luxury) cigar lighter
• (if equipped) inflatable restraint disable switch
• (if equipped) power takeoff switch
• (if equipped) selectable ride switch
• (not used)
• (upfitter option) emergency vehicle roof lamp relay
• (upfitter option) roof beacon switch
• (upfitter option) wrecker relay
• (w conv package) driver door module
• (w conv package) passenger door module
• (w/o conv package) door latch assembly (driver)
• (w/o conv package) door latch assembly (passenger)
• (w/o conv package) window/ door lock switch (driver)
• (w/o conv package) window/ door lock switch (passenger)
• A12
• Auto a/c
• Automatic transmission shift lock solenoid
• Auxiliary power outlet (bin)
• Auxiliary power outlet (console)
• Auxiliary power outlet (front)
• Auxiliary power outlet switch
• Blower motor control processor
• Blower motor resistor assembly
• C1 a
• C1 b9
• C1 d
• C1 d9
• C1 f6
• C2 a
• C2 d
• C3 c
• C355 b
• C4 a
• C5 e
• C7 f
• C8 f
• C9 a
• Center high mounted stop lamp
• Cigar lighter
• Cool/fan relay
• Data link connector
• Dome lamp (front)
• Dome/ reading lamp (rear)
• Exc luxury
• G115 (lower right of radiator support)
• G200 (behind right side of dash, near right "a" pillar)
• Hd trailering equipment provision
• Headlamp switch
• Hvac control module
• I/p fuse block (lower left side of dash)
• I/p junction block (lower right side of dash)
• I/p relay block (near left kick panel)
• Inside rearview mirror
• Instrument panel cluster
• Lock relay
• Luxury
• Man a/c
• Overhead console
• Recirculation actuator
• Right cooling fan
• S205
• S215 (in brake clutch harness)
• S345
• S352
• Sunroof control module
• Sunroof switch
• Transfer case shift control switch
• Underhood cooling fan fuse block (left side of engine compt)
• Unlock relay
• Vanity mirror lamp (left)
• Vanity mirror lamp (right)
• Windshield wiper motor module

Ground Distribution Wiring Diagram, Hybrid (5 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for Ground Distribution Wiring Diagram, Hybrid (5 of 5) for GMC Sierra Classic HD 2007 2500:

• 120 volt ac cable
• 42 volt dc cable & 120 volt ac cable
• D c5
• Energy storage box
• Energy storage control module
• Exterior auxiliary power outlet (120 vac)
• From left battery (diagram 1 of 5)
• G120 (right rear of eng compt)
• G121 (right rear of eng compt)
• G122 (left front of engine)
• G310 (in energy storage box)
• G311 (in energy storage box)
• G405 (on right rear frame rail)
• Nca
• Power steering pump cable
• S128 (5 cm from c122 breakout)
• S129 (5 cm from ehps pump conn breakout)
• S130
• S133
• S326 (in 42v harness)
• S327
• S430 (in 120v harness)
• Starter/ generator control module (right rear of engine compt)

HEADLIGHTS

Headlights Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Headlights Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• A (exc auto a/c)
• A12
• Ambient light sensor (on top center of dash) (exc auto a/c)
• Ambient light sunload sensor assembly (top of instrument panel) (auto a/c)
• Ambient lt sens
• Auto
• Body control module (bcm) (on lower left side of dash, below steering column)
• D (auto a/c)
• Daytime running lamp (left)
• Daytime running lamp (right)
• Drl defeat
• Drl fuse 10a
• Drl relay
• Drl rly ctrl
• Drl sw sig
• Flash to pass
• Fog lamp (lf)
• Fog lamp (rf)
• Fog lamp switch
• Fog lp fuse 15a
• Fog lp relay
• Fog lp rly ctrl
• Fog lp sw sig
• G100 (on lower left radiator support)
• G104 (left rear of eng block) g106 (on right front of engine block)
• G203 (near left "a" pillar)
• Gasoline diesel
• Hdlp dim sw sig
• Hdlp hi relay
• Hdlp low relay
• Head
• Head- lamp - high beam (left)
• Head- lamp - high beam (right)
• Head- lamp - low beam (left)
• Head- lamp - low beam (right)
• Headlamp switch
• Hi bm rly ctrl
• Hi hdlp lt fuse 10a
• Hi hdlp rt fuse 10a
• Hi/lo beam select
• Hlps on sig
• Hot at all times
• I/p relay block (near left kick panel)
• Interior lights system
• Lo bm rly ctrl
• Lo hdlp lt fuse 10a
• Lo hdlp rt fuse 10a
• Low ref
• Multifunction accessory switch
• Park
• Park brake switch (part of park brake assembly)
• Park lp sw sig
• Pk brake sig
• S100
• S101
• S102
• S213
• S217 (in steering column harness)
• Sound system
• Tan
• Turn signal multifunction switch
• Underhood fuse block (left side of engine compt)

HORN

Horn Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Horn Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• Body control module (behind lower left side of dash)
• C2 b9
• G c1
• G100 (on lower left radiator support)
• Horn contact
• Horn fuse 15a
• Horn relay
• Horn relay control
• Hot at all times
• Left horn (left side of radiator support)
• Nca
• Right horn (right side of radiator support)
• S100
• S101
• Turn signal cancel cam
• Turn signal/ multifunction switch
• Underhood fuse block (on left side of engine compartment)

INSTRUMENT CLUSTER

Instrument Cluster Wiring Diagram (1 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for Instrument Cluster Wiring Diagram (1 of 2) for GMC Sierra Classic HD 2007 2500:

• (diesel)
• 8s8
• A10
• A11
• A12
• Abs ind
• Air bag ind
• B10
• B11
• B12
• Battery
• Body control module (bcm) (on lower left side of dash, below steering column)
• Brake
• Brake ind
• C1 lamp
• Charge
• Class 2 data
• Computer data lines system
• Coolant temp gauge
• Cruise ind
• Dic fuel sig
• Dic mode sw
• Dic sw sig
• Dic toggle sw
• Driver information center (dic)
• Eng speed sig
• Except 8s8
• Exterior lights system
• Fog lamp ind
• Fuel gauge
• G100 (on lower left of radiator support)
• G200 (behind right side of dash, near right "a" pillar)
• G203 (near left "a" pillar)
• Ground
• High beam ind
• Hot at all times
• Hot in run or start
• Hour meter
• I/p dim
• I/p relay block (near left kick panel)
• Ign e fuse 10a
• Ignition
• Illumination
• Ind (mil) malfunction
• Info not avail
• Instrument panel cluster
• Ipc serial data
• Ipc/dic fuse 10a
• Left turn
• Left turn ind
• Lo wash fluid
• Low fuel ind
• Message display
• Mil cntrl
• Odometer
• Oil gauge
• Orn
• Overdrive defeat ind
• Pnk
• Power distribution system
• Prnd321
• Red
• Right turn
• Right turn ind
• S100
• S202
• Seat belt ind
• Security ind
• Sel sw prk sig
• Seo b1 fuse 15a
• Seo ign fuse 10a
• Service 4wd ind
• Speedometer
• Tachometer
• Tire pressure ind
• Tow/haul ind
• Traction control ind
• Transmission temp gauge
• Trip
• Underhood fuse block (left side of engine compt)
• Upshift ind
• Variable dimming
• Volts gauge
• Vss
• Wait to start
• Wait to start ind (diesel)
• Washer fluid level sensor (in washer fluid reservoir)

Instrument Cluster Wiring Diagram (2 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for Instrument Cluster Wiring Diagram (2 of 2) for GMC Sierra Classic HD 2007 2500:

• (8.1l)
• (diesel)
• (diesel) (gas)
• (except 8.1l)
• (in steering wheel controls harn)
• (left rear of engine compt) (4.3l) cruise control module (ccm)
• (near left kick panel) i/p relay block
• (on left front of engine compt) (diesel) engine control module (ecm)
• 5 volt ref
• 5.3l flex fuel
• A10
• Class 2 data
• Computer data lines system
• Diesel
• Eng speed sig
• Engine controls system
• Engine oil level switch (on oil pan)
• Engine oil pressure sensor (rear of engine)
• Exc luxury
• Except 5.3l flex fuel
• Fuel info
• Fuel lev sens
• Fuel level sensor (primary) (inside fuel tank)
• Fuel level sensor (secondary) (inside fuel tank)
• G103 (on right rear of engine block)
• G108 (lower left side of engine)
• G203 (near left "a" pillar)
• Gas
• Hybrid
• I/p relay block
• Inflatable restraint steering wheel module coil
• Low ref
• Lower left steering wheel control switch assembly
• Lower right steering wheel control switch assembly
• Luxury
• Mil ctrl
• Nca
• Oil lev sw sig
• Oil pres sig
• Personal- ization
• Powertrain control module (pcm) (gas) (on left front of engine compt)
• Radio
• S103 s132
• S171
• S180
• S260
• S312
• Select
• Starting/charging system
• Trip info
• Vss
• W/ dual tanks
• W/o dual tanks
• Wait to start
• Water in fuel (wif) sensor (on fuel filter element)
• Wif ind

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram (1 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for GMC Sierra Classic HD 2007 2500:

• A11
• B12
• Battery b+
• Body control module (lower left side of dash, below steering column)
• Cargo lamp low ctrl
• Class 2 data
• Class 2 serial data
• Convenience package comfort & decor level #3
• Ctsy lamp ctrl
• Ctsy lamp on sig
• Ctsy lamp power
• Dome lamp switch
• Door ajar sig
• Door latch assembly (driver)
• Door latch assembly (lr) (crew cab)
• Door latch assembly (passenger)
• Door latch assembly (rr) (crew cab)
• Driver door module (ddm) (in left front door)
• E11
• Front door courtesy lamp (left)
• Front door courtesy lamp (right)
• Front passenger door module (fpdm) (in right front door)
• G200 (behind right side of dash, near right "a" pillar)
• G200 (near right "a" pillar)
• G203 (near left "a" pillar)
• G305 (on left "b" pillar)
• G306 (on right "b" pillar)
• Headlamp switch
• Hot at all times
• I/p fuse block (lower left side of dash)
• I/p relay block (near left kick panel)
• Int lamp defeat sig
• Interior lamp defeat switch
• Junction i/p block (right side of dash, behind access panel)
• Lf door ajar sig
• Low ref
• Lr door ajar sig
• Merchandised package luxury edition
• Rf door ajar sig
• Rr door ajar sig
• S202
• Sp205 (left side of dash)
• Tan
• Tbc 2b fuse 15a
• Tbc 2c fuse 15a
• W/ ye9 or w/ y91
• W/o ye9 or w/o y91
• Y91 =
• Ye9 =

Courtesy Lamps Wiring Diagram (2 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for GMC Sierra Classic HD 2007 2500:

• (in dash harness)
• (in headliner harness between overhead console reading lamps and i/p relay block) s321
• (not used)
• A12
• B10
• C10
• C11
• Cargo lamp
• Convenience package comfort & decor level #3
• Courtesy reading lamps (rear) (crew cab w/ ye9/y91)
• Courtesy/ reading map lamps
• Crew cab w/ ye9/y91
• Crew cab w/ ye9/y91 or extended cab w/ y91
• Dome
• Except w/ ye9/y91
• G200 (near right "a" pillar)
• G203 (near left "a" pillar)
• I/p relay block (near left kick panel)
• Merchandised package luxury edition
• Multi- function accessory switch
• Overhead console
• Reading
• Rear dome lamp
• Regular cab w/ ye9 or extended cab w/ ye9
• Regular or extended cab w/ ye9/y91
• S213
• S345
• Vanity mirror lamp (left)
• Vanity mirror lamp (right)
• W/o ye9 or w/o y91
• Y91 =
• Ye9 =

Instrument Illumination Wiring Diagram (1 of 3) for GMC Sierra Classic HD 2007 2500

List of elements for Instrument Illumination Wiring Diagram (1 of 3) for GMC Sierra Classic HD 2007 2500:

• (lower left side of dash, below steering column) body control module
• 2 hi ind
• 2 hi ind control
• 4 hi ind
• 4 hi ind control
• 4 lo ind
• 4 lo ind control
• 5 volt ref
• A11
• A12
• Auto 4wd ind
• Awd ind control
• B pnk
• B11
• Battery b+
• Crew cab only
• Dimming input
• Dimming lo ref
• Drl off
• Drl off ind ctrl
• E12
• Electronic power steering system
• Except hybrid
• Fog lamp rly ctrl
• G305 (left "b" pillar)
• G306 (right "b" pillar)
• Headlamp on
• Headlamp on ind ctrl
• Headlamp switch
• Hot at all times
• Hybrid
• I/p fuse block (lower left side of dash)
• Inst panel dimming
• Instrument panel cluster
• Left rear window switch
• Np1 = transfer case, electric shift control, 2 speed np8 = transfer case active, 2 speed pushbutton control
• Pnk
• Red
• Right rear window switch
• Tbc 2a fuse 15a
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch
• W/ np1
• W/ np8

Instrument Illumination Wiring Diagram (2 of 3) for GMC Sierra Classic HD 2007 2500

List of elements for Instrument Illumination Wiring Diagram (2 of 3) for GMC Sierra Classic HD 2007 2500:

• (hybrid) (pto)
• (in console harness)
• (in steering wheel controls harness)
• (left side of engine compt, near battery) underhood fuse block
• (near left "a" pillar)
• (near right "a" pillar)
• B f
• E c
• Except 10 series or crew cab
• G200
• G200 (near right "a" pillar)
• G203
• Garage door opener
• Headlights system
• Hvac control module
• Inflatable restraint i/p module disable switch
• Inflatable restraint steering wheel module coil
• Logic
• Lower left
• Lower right
• Nca
• Overhead console
• Power take off (pto) switch or auxiliary power outlet switch (hybrid)
• Remote playback device-cd player
• S205 (in i/p harness)
• S213 (in i/p harness)
• S260
• S276
• S333
• S345
• Steering column fuse holder
• Steering wheel
• Traction control switch
• Transfer case shift control switch
• Upper left
• Upper right

Instrument Illumination Wiring Diagram (3 of 3) for GMC Sierra Classic HD 2007 2500

List of elements for Instrument Illumination Wiring Diagram (3 of 3) for GMC Sierra Classic HD 2007 2500:

• i/p fuse block
• (behind right side of dash) g200
• (in brake clutch harness)
• (in i/p harness)
• (lower left side of dash)
• A11
• Beacon indicator
• C10
• Electronic suspension system
• Exterior lamps system
• Fog lamp ind
• G200 (near right "a" pillar)
• I/p relay block (near left kick panel)
• Junction i/p block (lower left side of dash)
• Lock switch (driver)
• Logic
• Multifunction accessory switch
• Ride indicator
• Roof beacon
• Roof beacon switch
• S202
• S215
• S352
• Selectable ride
• Selectable ride switch
• Sunroof switch
• Window/door
• Window/door lock switch (passenger)

MEMORY SYSTEMS

Memory Mirrors Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Memory Mirrors Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• 5 volt ref
• Battery
• Class 2 serial data
• Computer data lines system
• Ddm fuse 15a
• Driver door module (in driver's door)
• Driver outside rearview mirror
• Electro- chromic
• Exit
• Folding motor
• Front passenger door module (in passenger's door)
• G200 (near right "a" pillar)
• Ground
• Heating element
• Horizontal
• Hot at all times
• I/p fuse block (lower left side of dash)
• I/p junction block (lower right side of dash)
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Left
• Low ref
• Lt doors circuit breaker 25a
• Mem
• Mem 1 sw sig
• Mem 2 sw sig
• Memory/ heated seat switch
• Mir htr low ref
• Mir htr sply voltage
• Mir mtr dwn ctrl
• Mir mtr extend ctrl
• Mir mtr retract ctrl
• Mir mtr rt ctrl
• Mir position sens sig
• Mir sens low ref
• Mir signal
• Mtr position sens sig
• Passenger outside rearview mirror
• Pdm fuse 10a
• Pnk
• Red
• Rt door circuit breaker 25a
• Rt/dwn mtr common
• S202
• Sply voltage
• Tan
• Vert posit sens sig
• Vertical

Memory Seat Wiring Diagram (1 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for Memory Seat Wiring Diagram (1 of 2) for GMC Sierra Classic HD 2007 2500:

• (crew cab) g305 (left "b" pillar) (exc crew cab) g306 (right "b" pillar)
• (in driver seat harn)
• (not used)
• 1150 (or 1250)
• 12 volt ref
• 5 volt ref
• Batt (+)
• C10 h
• Class 2 serial data
• Computer data lines system
• Driver's seat adjuster switch
• Frt dwn
• Frt up
• Frt vert dn sw sig
• Frt vert mtr dn ctrl
• Frt vert mtr pos sen
• Frt vert mtr up ctrl
• Frt vert up sw sig
• Fwd
• Gnd
• Heated seat cus pwr
• Heated seat temp sig
• Horiz fwd sw sig
• Horiz mtr fwd ctrl
• Horiz mtr pos sen sig
• Horiz mtr rwd ctrl
• Horiz rwd sw sig
• Hot at all times
• Htd seat back ctrl
• Htd seat back pwr
• Htd seat cus ctrl
• Htd seat sply volt
• I/p relay block (near left kick panel)
• Low ref
• Lum horiz pos sen sig
• Lum mtr fwd ctrl
• Lum mtr fwd sw sig
• Lum mtr rwd ctrl
• Lum mtr rwd ctrl lum mtr rwd ctrl
• Memory seat module (under left front seat)
• Pnk
• Pnk pnk
• Rear vert dn sw sig
• Rear vert mtr pos sens
• Rear vert up sw sig
• Rec fwd
• Rec rwd
• Recline fwd sw sig
• Recline mtr fwd ctrl
• Recline mtr rwd ctrl
• Recline pos sen sig
• Recline rwd sw sig
• Rr dwn
• Rr up
• Rr vert mtr dn ctrl
• Rr vert mtr up ctrl
• Rwd
• S311
• S314
• S315 (in driver seat harn)
• Seat circuit breaker 30a
• Seats system
• Tan
• Torso blstr in sw sig
• Torso blstr out sw sig
• Torso bolster in ctrl
• Torso bolster out ctrl
• Trso blstr pos sens sig

Memory Seat Wiring Diagram (2 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for Memory Seat Wiring Diagram (2 of 2) for GMC Sierra Classic HD 2007 2500:

• (in driver seat harn) s309
• (in driver seat harn) s310
• C (not used)
• Class 2 serial data
• Computer data lines system
• Driver door module (in driver's door)
• Driver seat bolster/ lumbar switch
• Exit
• Mem
• Mem 1 sw sig
• Mem 2 sw sig
• Memory/ heated seat switch
• Out
• Pnk
• Red
• Seat bolster motor/ position sensor (driver)
• Seat front vertical motor (driver)
• Seat front vertical position sensor (driver)
• Seat horiz- ontal motor (driver)
• Seat horiz- ontal position sensor (driver)
• Seat lumbar motor/ position sensor (driver)
• Seat rear vertical motor (driver)
• Seat rear vertical position sensor (driver)
• Seat recliner motor (driver)
• Seat recliner motor position sensor (driver)
• Sply voltage
• Tan

POWER DISTRIBUTION

4.3L VIN X

4.3L VIN X, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 4.3L VIN X, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500:

• (18.5 cm from trailer conn breakout)
• (base) (exc base)
• (in console harness)
• (in i/p harness)
• (in seo harness)
• (not used)
• (w/aux battery) battery (right)
• 4.3l, 8.1l
• 4.8l, 5.3l & 6.0l
• 40a
• 4ws fuse 15a
• A c1
• A c6
• A c7
• A12
• Abs fuse 60a
• Audio amplifier
• Auxiliary battery relay (right rear of engine compt)
• B c9
• B11 c1
• B12 c1
• B2 c3
• Battery (left)
• Battery (right)
• Battery cable junction block
• Body control module
• C7 b
• C9 d
• Cig ltr fuse 15a
• Cigar lighter
• Cool/ fan fuse 10a
• Cool/ fan fuse 40a
• Cool/fan relay 1
• Cool/fan relay 2
• Cool/fan relay 3
• D12 c1
• Data link connector
• Digital radio receiver
• E10
• Eap fuse 15a
• Electronic brake control module
• Emergency vehicle roof lamp relay
• Evaporative emission canister vent solenoid
• Except 4.3l
• Except luxury
• F2 c1
• Fuse b 30a
• Fuse d 30a
• Fusible link 5 (10 ga- red)
• Fusible link 6 (10 ga- red)
• G104 (left rear of engine block)
• G200 (behind right side of dash, near "a" pillar)
• Generator (4.3l & 8.1l)
• Generator (4.8l, 5.3l & 6.0l)
• Harness)
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• I/p relay block (near left kick panel)
• Ign a fuse 40a
• Ign b fuse 40a
• Luxury
• Mega fuse
• Mobile radio fuse block (right side of dash)
• Nca
• Radio
• Radio amp fuse 30a
• Radio fuse 15a
• Rear seat audio (rsa) controller
• Red
• Relay a
• Relay b
• Rr wpr fuse 25a
• Rtd fuse 30a
• S/roof fuse 25a
• S102 (in engine harness)
• S205 s303
• S220 (in seo red
• S221
• S222
• S416
• Starter
• Starter relay
• Stud 1 fuse 40a
• Stud 2 fuse 30a
• Sunroof control module
• Tbc batt fuse 10a
• To 4wd fuse (diagram 5 of 6)
• To ignition switch (diagram 5 of 6)
• To ignition switch (diagram 6 of 6)
• To ipc/dic fuse (diagram 2 of 6)
• Trailer connector (7 way)
• Underhood cooling fan fuse block (left side of eng compt)
• Underhood fuse block (left side of engine compt)
• Vses/ ecas fuse 60a
• W/ aux battery
• W/ dual batteries
• W/ wrecker emergency lamp
• Wrecker relay

4.3L VIN X, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 4.3L VIN X, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500:

• (6.4 cm from c202 breakout) s335
• (in console harness)
• (in i/p harness)
• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A c10
• A10
• Auto a/c
• Aux pwr fuse 20a
• Auxiliary power outlet (bin)
• Auxiliary power outlet (console)
• Auxiliary power outlet (front)
• B c5
• B11
• B11 c1
• Blower motor control module
• Blower motor resistor assembly
• Blwr fuse 40a
• C1 c2
• C1 f12
• C10
• C3 b
• C4 d
• C4 e6
• C8 a
• D12
• Defog relay
• E c8
• E11 c1
• Electronic brake control module
• Except luxury
• F/pmp relay
• From radio fuse (diagram 1 of 6)
• G200 (behind right side of dash, near "a" pillar)
• Garage door opener
• Generator battery control module (10 series)
• Hvac control module
• Hvac/ecas fuse 10a
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Info fuse 15a
• Instrument panel cluster
• Ipc/dic fuse 10a
• Lh hid fuse 20a
• Luxury
• Manual a/c
• Nca
• Overhead console
• Pcm b fuse 20a
• Powertrain control module
• Rear seat entertainment assembly
• Red
• Remote playback device (cd player)
• Rh hid fuse 20a
• Roof beacon relay
• Roof beacon switch
• Rr defog fuse 30a
• Rr hvac fuse 30a
• Rvc fuse 10a
• Seo b1 fuse 15a
• Seo b2 fuse 30a
• Stop lp fuse 25a
• Stoplamp switch
• Tcmb fuse 10a
• To lbec 1 fuse (diagram 3 of 6)
• Transfer case encoder motor
• Transfer case shift control module
• Transmission control module (tcm)
• Trec fuse 30a
• Vehicle communication interface module
• W/o 8s8

4.3L VIN X, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 4.3L VIN X, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (lower left side of dash)
• (not used)
• (passenger seat harness)
• A c5
• A c6
• A/c comp fuse 10a
• A/c comp relay
• A10
• A12
• A7 c1
• Aux pwr 2 m/gate fuse 20a
• B c7
• B10
• B12
• B2 c2
• B7 c2
• Body control module
• Bucket
• C c3
• C9 c1
• Ddm fuse 15a
• Driver door module
• Driver door unlock relay
• Drl fuse 10a
• Drl relay
• E c10
• E c7
• E10
• E11 c1
• E12
• E3 c3
• Ecc/ tpm fuse 10a
• Etc/ecm fuse 15a
• Evaporative emissions (evap) canister purge solenoid
• Exc base
• F c3
• F11 c1
• Fog lp fuse 15a
• Fog lp relay
• From mbec 1 fuse (diagram 3 of 6)
• From pcm b fuse (diagram 2 of 6)
• Fuel composition sensor
• Fuel pump relay (secondary) (w/ dual tanks)
• G c4
• G104 (left rear of engine block)
• Harness)
• Hazrd fuse 25a
• Hdlp-hi relay
• Hdlp-low relay
• Horn relay
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Ign 1 relay
• Intake air temperature (iat)/mass airflow (maf) sensor assembly
• Lbec 1 fuse 50a
• Lbec 2 fuse 50a
• Left i/p fuse block
• Lock relay
• Locks fuse 20a
• Lt door circuit breaker 25a
• Lumbar bolster switch (front passenger)
• M c4
• Mbec 1 fuse 50a
• Memory seat module (driver)
• Non bucket
• Park lp relay
• Passenger door module
• Pcm 1 fuse 15a
• Pdm fuse 10a
• Pnk
• Power take off relay
• Powertrain control module
• Red
• Rt doors circuit breaker 25a
• S328
• Sba fuse 15a
• Seat adjuster switch (driver)
• Seat adjuster switch (front passenger)
• Seats circuit breaker 30a
• Tbc 2a fuse 15a
• Tbc 2b fuse 15a
• Tbc 2c fuse 15a
• Throttle actuator control module (except 4.3l)
• Tire pressure monitor (tpm) module
• To ign 1 relay (diagram 3 of 6)
• To inj 1 fuse (diagram 4 of 6)
• To seo ign fuse (diagram 6 of 6)
• Turn signal/ hazard flasher module
• Underhood fuse block (left side of engine compt)
• Unlock relay
• W/s wash fuse 15a
• W/s wash relay
• Window switch (left rear) (crew cab)
• Window switch (right rear)

4.3L VIN X, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 4.3L VIN X, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500:

• (4.3l)
• (4.8l, 5.3, 6.0l)
• (4.8l, 5.3l, 6.0l)
• (in injector jumper harn)
• (not used)
• 4.3l
• 4.3l, 4.8l, 5.3l, 6.0l
• 4.8l, 5.3l, 6.0l, 8.1l
• 8.1l
• C10
• D10
• E10
• Except 4.3l
• From pcm 1 fuse (diagram 3 of 6)
• Fuel injector 1
• Fuel injector 2
• Fuel injector 3
• Fuel injector 4
• Fuel injector 5
• Fuel injector 6
• Fuel injector 7
• Fuel injector 8
• Ignition coil
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Ignition coil 7
• Ignition coil 8
• Ignition control module
• Inj 1 fuse 15a
• Inj 2 fuse 15a
• Pnk
• Pnk a
• S152 (in injector jumper harness)
• S154
• S159 (in engine harness)
• S160 (in ignition coil jumper harness)
• Underhood fuse block (left side of engine compt)

4.3L VIN X, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 4.3L VIN X, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500:

• (man a/c)
• (not used)
• (over 8600 gvw) (8600 gvw or less)
• 4wd fuse 15a
• A/t shift lever
• Acc
• Air temperature actuator (left)
• Air temperature actuator (right)
• Automatic transmission
• B10 a1
• Body control module
• Brake fuse 10a
• C1 c9
• C1 e8
• C175
• C2 c2
• Clutch start switch
• Crank fuse 10a
• Cruise
• Cruise control module
• Cruise control on/off switch
• Cruise fuse 10a
• Driver shift request switch
• E11
• Electronic brake control module
• Exc m74 transmission
• F10
• From auxiliary battery relay (diagram 1 of 6)
• From ign a fuse (diagram 1 of 6)
• Front axle actuator
• Htr/ac fuse 30a
• Hvac 1 fuse 10a
• Hvac control module
• I/p fuse block (left side of dash)
• I/p junction block (behind right side of dash)
• Ign 0 fuse 10a
• Ign 3 fuse 10a
• Ignition switch
• Lock
• Mode actuator
• Off
• Pnk
• Power takeoff (pto) switch
• Powertrain control module
• Pto
• Recirculation actuator
• Red
• Run
• Start
• Stoplamp switch
• Tbc ign 0 fuse 10a
• Traction control switch
• Transfer case shift control switch
• Transmission control module (tcm)
• Turn signal multifunction switch
• Underhood fuse block (left side of engine compt)

4.3L VIN X, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 4.3L VIN X, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A/c comp relay
• A/t
• Acc
• Airbag fuse 15a
• B/u lp fuse 20a
• Backup lamp switch
• Body control module
• C c8
• C1 b2
• C10
• C8 d
• Clutch pedal position switch (m/t)
• D c5
• D10 c1
• Defog relay
• E c3
• Exc 8.1l w/o california lev
• F11
• From ign 1 relay (diagram 3 of 6)
• From ign b fuse (diagram 1 of 6)
• Heated oxygen sensor bank 1 sensor 1
• Heated oxygen sensor bank 1 sensor 2
• Heated oxygen sensor bank 2 sensor 1
• Heated oxygen sensor bank 2 sensor 2
• I/p fuse block (behind left side of dash)
• I/p relay block (near left kick panel)
• Ign e fuse 10a
• Ignition switch
• Inflatable restraint i/p module disable switch
• Inflatable restraint passenger presence system module
• Inflatable restraint sensing & diagnostic module
• Inside rearview mirror
• Instrument panel cluster
• Lock
• M/t
• Mobile radio fuse block (upfitter option)
• Nca
• O2a fuse 15a
• O2b fuse 15a
• Off
• Park/neutral position switch (a/t)
• Pnk
• Red
• Relay a
• Relay b
• Rr wpr fuse 15a
• Run
• Selectable ride switch
• Seo accy fuse 10a
• Seo ign fuse 10a
• Start
• Tbc accy fuse 10a
• Tbc ign 1 fuse 10a
• Turn signal multifunction switch
• Turn signal/ multifunction switch
• W/o 8s8
• Windshield wiper motor module
• Ws wpr fuse 25a

4.8L VIN V

4.8L VIN V, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 4.8L VIN V, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500:

• (18.5 cm from trailer conn breakout)
• (base) (exc base)
• (in console harness)
• (in i/p harness)
• (in seo harness)
• (not used)
• (w/aux battery) battery (right)
• 4.3l, 8.1l
• 4.8l, 5.3l & 6.0l
• 40a
• 4ws fuse 15a
• A c1
• A c6
• A c7
• A12
• Abs fuse 60a
• Audio amplifier
• Auxiliary battery relay (right rear of engine compt)
• B c9
• B11 c1
• B12 c1
• B2 c3
• Battery (left)
• Battery (right)
• Battery cable junction block
• Body control module
• C7 b
• C9 d
• Cig ltr fuse 15a
• Cigar lighter
• Cool/ fan fuse 10a
• Cool/ fan fuse 40a
• Cool/fan relay 1
• Cool/fan relay 2
• Cool/fan relay 3
• D12 c1
• Data link connector
• Digital radio receiver
• E10
• Eap fuse 15a
• Electronic brake control module
• Emergency vehicle roof lamp relay
• Evaporative emission canister vent solenoid
• Except 4.3l
• Except luxury
• F2 c1
• Fuse b 30a
• Fuse d 30a
• Fusible link 5 (10 ga- red)
• Fusible link 6 (10 ga- red)
• G104 (left rear of engine block)
• G200 (behind right side of dash, near "a" pillar)
• Generator (4.3l & 8.1l)
• Generator (4.8l, 5.3l & 6.0l)
• Harness)
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• I/p relay block (near left kick panel)
• Ign a fuse 40a
• Ign b fuse 40a
• Luxury
• Mega fuse
• Mobile radio fuse block (right side of dash)
• Nca
• Radio
• Radio amp fuse 30a
• Radio fuse 15a
• Rear seat audio (rsa) controller
• Red
• Relay a
• Relay b
• Rr wpr fuse 25a
• Rtd fuse 30a
• S/roof fuse 25a
• S102 (in engine harness)
• S205 s303
• S220 (in seo red
• S221
• S222
• S416
• Starter
• Starter relay
• Stud 1 fuse 40a
• Stud 2 fuse 30a
• Sunroof control module
• Tbc batt fuse 10a
• To 4wd fuse (diagram 5 of 6)
• To ignition switch (diagram 5 of 6)
• To ignition switch (diagram 6 of 6)
• To ipc/dic fuse (diagram 2 of 6)
• Trailer connector (7 way)
• Underhood cooling fan fuse block (left side of eng compt)
• Underhood fuse block (left side of engine compt)
• Vses/ ecas fuse 60a
• W/ aux battery
• W/ dual batteries
• W/ wrecker emergency lamp
• Wrecker relay

4.8L VIN V, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 4.8L VIN V, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500:

• (6.4 cm from c202 breakout) s335
• (in console harness)
• (in i/p harness)
• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A c10
• A10
• Auto a/c
• Aux pwr fuse 20a
• Auxiliary power outlet (bin)
• Auxiliary power outlet (console)
• Auxiliary power outlet (front)
• B c5
• B11
• B11 c1
• Blower motor control module
• Blower motor resistor assembly
• Blwr fuse 40a
• C1 c2
• C1 f12
• C10
• C3 b
• C4 d
• C4 e6
• C8 a
• D12
• Defog relay
• E c8
• E11 c1
• Electronic brake control module
• Except luxury
• F/pmp relay
• From radio fuse (diagram 1 of 6)
• G200 (behind right side of dash, near "a" pillar)
• Garage door opener
• Generator battery control module (10 series)
• Hvac control module
• Hvac/ecas fuse 10a
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Info fuse 15a
• Instrument panel cluster
• Ipc/dic fuse 10a
• Lh hid fuse 20a
• Luxury
• Manual a/c
• Nca
• Overhead console
• Pcm b fuse 20a
• Powertrain control module
• Rear seat entertainment assembly
• Red
• Remote playback device (cd player)
• Rh hid fuse 20a
• Roof beacon relay
• Roof beacon switch
• Rr defog fuse 30a
• Rr hvac fuse 30a
• Rvc fuse 10a
• Seo b1 fuse 15a
• Seo b2 fuse 30a
• Stop lp fuse 25a
• Stoplamp switch
• Tcmb fuse 10a
• To lbec 1 fuse (diagram 3 of 6)
• Transfer case encoder motor
• Transfer case shift control module
• Transmission control module (tcm)
• Trec fuse 30a
• Vehicle communication interface module
• W/o 8s8

4.8L VIN V, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 4.8L VIN V, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (lower left side of dash)
• (not used)
• (passenger seat harness)
• A c5
• A c6
• A/c comp fuse 10a
• A/c comp relay
• A10
• A12
• A7 c1
• Aux pwr 2 m/gate fuse 20a
• B c7
• B10
• B12
• B2 c2
• B7 c2
• Body control module
• Bucket
• C c3
• C9 c1
• Ddm fuse 15a
• Driver door module
• Driver door unlock relay
• Drl fuse 10a
• Drl relay
• E c10
• E c7
• E10
• E11 c1
• E12
• E3 c3
• Ecc/ tpm fuse 10a
• Etc/ecm fuse 15a
• Evaporative emissions (evap) canister purge solenoid
• Exc base
• F c3
• F11 c1
• Fog lp fuse 15a
• Fog lp relay
• From mbec 1 fuse (diagram 3 of 6)
• From pcm b fuse (diagram 2 of 6)
• Fuel composition sensor
• Fuel pump relay (secondary) (w/ dual tanks)
• G c4
• G104 (left rear of engine block)
• Harness)
• Hazrd fuse 25a
• Hdlp-hi relay
• Hdlp-low relay
• Horn relay
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Ign 1 relay
• Intake air temperature (iat)/mass airflow (maf) sensor assembly
• Lbec 1 fuse 50a
• Lbec 2 fuse 50a
• Left i/p fuse block
• Lock relay
• Locks fuse 20a
• Lt door circuit breaker 25a
• Lumbar bolster switch (front passenger)
• M c4
• Mbec 1 fuse 50a
• Memory seat module (driver)
• Non bucket
• Park lp relay
• Passenger door module
• Pcm 1 fuse 15a
• Pdm fuse 10a
• Pnk
• Power take off relay
• Powertrain control module
• Red
• Rt doors circuit breaker 25a
• S328
• Sba fuse 15a
• Seat adjuster switch (driver)
• Seat adjuster switch (front passenger)
• Seats circuit breaker 30a
• Tbc 2a fuse 15a
• Tbc 2b fuse 15a
• Tbc 2c fuse 15a
• Throttle actuator control module (except 4.3l)
• Tire pressure monitor (tpm) module
• To ign 1 relay (diagram 3 of 6)
• To inj 1 fuse (diagram 4 of 6)
• To seo ign fuse (diagram 6 of 6)
• Turn signal/ hazard flasher module
• Underhood fuse block (left side of engine compt)
• Unlock relay
• W/s wash fuse 15a
• W/s wash relay
• Window switch (left rear) (crew cab)
• Window switch (right rear)

4.8L VIN V, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 4.8L VIN V, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500:

• (4.3l)
• (4.8l, 5.3, 6.0l)
• (4.8l, 5.3l, 6.0l)
• (in injector jumper harn)
• (not used)
• 4.3l
• 4.3l, 4.8l, 5.3l, 6.0l
• 4.8l, 5.3l, 6.0l, 8.1l
• 8.1l
• C10
• D10
• E10
• Except 4.3l
• From pcm 1 fuse (diagram 3 of 6)
• Fuel injector 1
• Fuel injector 2
• Fuel injector 3
• Fuel injector 4
• Fuel injector 5
• Fuel injector 6
• Fuel injector 7
• Fuel injector 8
• Ignition coil
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Ignition coil 7
• Ignition coil 8
• Ignition control module
• Inj 1 fuse 15a
• Inj 2 fuse 15a
• Pnk
• Pnk a
• S152 (in injector jumper harness)
• S154
• S159 (in engine harness)
• S160 (in ignition coil jumper harness)
• Underhood fuse block (left side of engine compt)

4.8L VIN V, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 4.8L VIN V, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500:

• (man a/c)
• (not used)
• (over 8600 gvw) (8600 gvw or less)
• 4wd fuse 15a
• A/t shift lever
• Acc
• Air temperature actuator (left)
• Air temperature actuator (right)
• Automatic transmission
• B10 a1
• Body control module
• Brake fuse 10a
• C1 c9
• C1 e8
• C175
• C2 c2
• Clutch start switch
• Crank fuse 10a
• Cruise
• Cruise control module
• Cruise control on/off switch
• Cruise fuse 10a
• Driver shift request switch
• E11
• Electronic brake control module
• Exc m74 transmission
• F10
• From auxiliary battery relay (diagram 1 of 6)
• From ign a fuse (diagram 1 of 6)
• Front axle actuator
• Htr/ac fuse 30a
• Hvac 1 fuse 10a
• Hvac control module
• I/p fuse block (left side of dash)
• I/p junction block (behind right side of dash)
• Ign 0 fuse 10a
• Ign 3 fuse 10a
• Ignition switch
• Lock
• Mode actuator
• Off
• Pnk
• Power takeoff (pto) switch
• Powertrain control module
• Pto
• Recirculation actuator
• Red
• Run
• Start
• Stoplamp switch
• Tbc ign 0 fuse 10a
• Traction control switch
• Transfer case shift control switch
• Transmission control module (tcm)
• Turn signal multifunction switch
• Underhood fuse block (left side of engine compt)

4.8L VIN V, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 4.8L VIN V, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A/c comp relay
• A/t
• Acc
• Airbag fuse 15a
• B/u lp fuse 20a
• Backup lamp switch
• Body control module
• C c8
• C1 b2
• C10
• C8 d
• Clutch pedal position switch (m/t)
• D c5
• D10 c1
• Defog relay
• E c3
• Exc 8.1l w/o california lev
• F11
• From ign 1 relay (diagram 3 of 6)
• From ign b fuse (diagram 1 of 6)
• Heated oxygen sensor bank 1 sensor 1
• Heated oxygen sensor bank 1 sensor 2
• Heated oxygen sensor bank 2 sensor 1
• Heated oxygen sensor bank 2 sensor 2
• I/p fuse block (behind left side of dash)
• I/p relay block (near left kick panel)
• Ign e fuse 10a
• Ignition switch
• Inflatable restraint i/p module disable switch
• Inflatable restraint passenger presence system module
• Inflatable restraint sensing & diagnostic module
• Inside rearview mirror
• Instrument panel cluster
• Lock
• M/t
• Mobile radio fuse block (upfitter option)
• Nca
• O2a fuse 15a
• O2b fuse 15a
• Off
• Park/neutral position switch (a/t)
• Pnk
• Red
• Relay a
• Relay b
• Rr wpr fuse 15a
• Run
• Selectable ride switch
• Seo accy fuse 10a
• Seo ign fuse 10a
• Start
• Tbc accy fuse 10a
• Tbc ign 1 fuse 10a
• Turn signal multifunction switch
• Turn signal/ multifunction switch
• W/o 8s8
• Windshield wiper motor module
• Ws wpr fuse 25a

5.3L VIN B

5.3L VIN B, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN B, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500:

• (18.5 cm from trailer conn breakout)
• (base) (exc base)
• (in console harness)
• (in i/p harness)
• (in seo harness)
• (not used)
• (w/aux battery) battery (right)
• 4.3l, 8.1l
• 4.8l, 5.3l & 6.0l
• 40a
• 4ws fuse 15a
• A c1
• A c6
• A c7
• A12
• Abs fuse 60a
• Audio amplifier
• Auxiliary battery relay (right rear of engine compt)
• B c9
• B11 c1
• B12 c1
• B2 c3
• Battery (left)
• Battery (right)
• Battery cable junction block
• Body control module
• C7 b
• C9 d
• Cig ltr fuse 15a
• Cigar lighter
• Cool/ fan fuse 10a
• Cool/ fan fuse 40a
• Cool/fan relay 1
• Cool/fan relay 2
• Cool/fan relay 3
• D12 c1
• Data link connector
• Digital radio receiver
• E10
• Eap fuse 15a
• Electronic brake control module
• Emergency vehicle roof lamp relay
• Evaporative emission canister vent solenoid
• Except 4.3l
• Except luxury
• F2 c1
• Fuse b 30a
• Fuse d 30a
• Fusible link 5 (10 ga- red)
• Fusible link 6 (10 ga- red)
• G104 (left rear of engine block)
• G200 (behind right side of dash, near "a" pillar)
• Generator (4.3l & 8.1l)
• Generator (4.8l, 5.3l & 6.0l)
• Harness)
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• I/p relay block (near left kick panel)
• Ign a fuse 40a
• Ign b fuse 40a
• Luxury
• Mega fuse
• Mobile radio fuse block (right side of dash)
• Nca
• Radio
• Radio amp fuse 30a
• Radio fuse 15a
• Rear seat audio (rsa) controller
• Red
• Relay a
• Relay b
• Rr wpr fuse 25a
• Rtd fuse 30a
• S/roof fuse 25a
• S102 (in engine harness)
• S205 s303
• S220 (in seo red
• S221
• S222
• S416
• Starter
• Starter relay
• Stud 1 fuse 40a
• Stud 2 fuse 30a
• Sunroof control module
• Tbc batt fuse 10a
• To 4wd fuse (diagram 5 of 6)
• To ignition switch (diagram 5 of 6)
• To ignition switch (diagram 6 of 6)
• To ipc/dic fuse (diagram 2 of 6)
• Trailer connector (7 way)
• Underhood cooling fan fuse block (left side of eng compt)
• Underhood fuse block (left side of engine compt)
• Vses/ ecas fuse 60a
• W/ aux battery
• W/ dual batteries
• W/ wrecker emergency lamp
• Wrecker relay

5.3L VIN B, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN B, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500:

• (6.4 cm from c202 breakout) s335
• (in console harness)
• (in i/p harness)
• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A c10
• A10
• Auto a/c
• Aux pwr fuse 20a
• Auxiliary power outlet (bin)
• Auxiliary power outlet (console)
• Auxiliary power outlet (front)
• B c5
• B11
• B11 c1
• Blower motor control module
• Blower motor resistor assembly
• Blwr fuse 40a
• C1 c2
• C1 f12
• C10
• C3 b
• C4 d
• C4 e6
• C8 a
• D12
• Defog relay
• E c8
• E11 c1
• Electronic brake control module
• Except luxury
• F/pmp relay
• From radio fuse (diagram 1 of 6)
• G200 (behind right side of dash, near "a" pillar)
• Garage door opener
• Generator battery control module (10 series)
• Hvac control module
• Hvac/ecas fuse 10a
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Info fuse 15a
• Instrument panel cluster
• Ipc/dic fuse 10a
• Lh hid fuse 20a
• Luxury
• Manual a/c
• Nca
• Overhead console
• Pcm b fuse 20a
• Powertrain control module
• Rear seat entertainment assembly
• Red
• Remote playback device (cd player)
• Rh hid fuse 20a
• Roof beacon relay
• Roof beacon switch
• Rr defog fuse 30a
• Rr hvac fuse 30a
• Rvc fuse 10a
• Seo b1 fuse 15a
• Seo b2 fuse 30a
• Stop lp fuse 25a
• Stoplamp switch
• Tcmb fuse 10a
• To lbec 1 fuse (diagram 3 of 6)
• Transfer case encoder motor
• Transfer case shift control module
• Transmission control module (tcm)
• Trec fuse 30a
• Vehicle communication interface module
• W/o 8s8

5.3L VIN B, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN B, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (lower left side of dash)
• (not used)
• (passenger seat harness)
• A c5
• A c6
• A/c comp fuse 10a
• A/c comp relay
• A10
• A12
• A7 c1
• Aux pwr 2 m/gate fuse 20a
• B c7
• B10
• B12
• B2 c2
• B7 c2
• Body control module
• Bucket
• C c3
• C9 c1
• Ddm fuse 15a
• Driver door module
• Driver door unlock relay
• Drl fuse 10a
• Drl relay
• E c10
• E c7
• E10
• E11 c1
• E12
• E3 c3
• Ecc/ tpm fuse 10a
• Etc/ecm fuse 15a
• Evaporative emissions (evap) canister purge solenoid
• Exc base
• F c3
• F11 c1
• Fog lp fuse 15a
• Fog lp relay
• From mbec 1 fuse (diagram 3 of 6)
• From pcm b fuse (diagram 2 of 6)
• Fuel composition sensor
• Fuel pump relay (secondary) (w/ dual tanks)
• G c4
• G104 (left rear of engine block)
• Harness)
• Hazrd fuse 25a
• Hdlp-hi relay
• Hdlp-low relay
• Horn relay
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Ign 1 relay
• Intake air temperature (iat)/mass airflow (maf) sensor assembly
• Lbec 1 fuse 50a
• Lbec 2 fuse 50a
• Left i/p fuse block
• Lock relay
• Locks fuse 20a
• Lt door circuit breaker 25a
• Lumbar bolster switch (front passenger)
• M c4
• Mbec 1 fuse 50a
• Memory seat module (driver)
• Non bucket
• Park lp relay
• Passenger door module
• Pcm 1 fuse 15a
• Pdm fuse 10a
• Pnk
• Power take off relay
• Powertrain control module
• Red
• Rt doors circuit breaker 25a
• S328
• Sba fuse 15a
• Seat adjuster switch (driver)
• Seat adjuster switch (front passenger)
• Seats circuit breaker 30a
• Tbc 2a fuse 15a
• Tbc 2b fuse 15a
• Tbc 2c fuse 15a
• Throttle actuator control module (except 4.3l)
• Tire pressure monitor (tpm) module
• To ign 1 relay (diagram 3 of 6)
• To inj 1 fuse (diagram 4 of 6)
• To seo ign fuse (diagram 6 of 6)
• Turn signal/ hazard flasher module
• Underhood fuse block (left side of engine compt)
• Unlock relay
• W/s wash fuse 15a
• W/s wash relay
• Window switch (left rear) (crew cab)
• Window switch (right rear)

5.3L VIN B, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN B, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500:

• (4.3l)
• (4.8l, 5.3, 6.0l)
• (4.8l, 5.3l, 6.0l)
• (in injector jumper harn)
• (not used)
• 4.3l
• 4.3l, 4.8l, 5.3l, 6.0l
• 4.8l, 5.3l, 6.0l, 8.1l
• 8.1l
• C10
• D10
• E10
• Except 4.3l
• From pcm 1 fuse (diagram 3 of 6)
• Fuel injector 1
• Fuel injector 2
• Fuel injector 3
• Fuel injector 4
• Fuel injector 5
• Fuel injector 6
• Fuel injector 7
• Fuel injector 8
• Ignition coil
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Ignition coil 7
• Ignition coil 8
• Ignition control module
• Inj 1 fuse 15a
• Inj 2 fuse 15a
• Pnk
• Pnk a
• S152 (in injector jumper harness)
• S154
• S159 (in engine harness)
• S160 (in ignition coil jumper harness)
• Underhood fuse block (left side of engine compt)

5.3L VIN B, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN B, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500:

• (man a/c)
• (not used)
• (over 8600 gvw) (8600 gvw or less)
• 4wd fuse 15a
• A/t shift lever
• Acc
• Air temperature actuator (left)
• Air temperature actuator (right)
• Automatic transmission
• B10 a1
• Body control module
• Brake fuse 10a
• C1 c9
• C1 e8
• C175
• C2 c2
• Clutch start switch
• Crank fuse 10a
• Cruise
• Cruise control module
• Cruise control on/off switch
• Cruise fuse 10a
• Driver shift request switch
• E11
• Electronic brake control module
• Exc m74 transmission
• F10
• From auxiliary battery relay (diagram 1 of 6)
• From ign a fuse (diagram 1 of 6)
• Front axle actuator
• Htr/ac fuse 30a
• Hvac 1 fuse 10a
• Hvac control module
• I/p fuse block (left side of dash)
• I/p junction block (behind right side of dash)
• Ign 0 fuse 10a
• Ign 3 fuse 10a
• Ignition switch
• Lock
• Mode actuator
• Off
• Pnk
• Power takeoff (pto) switch
• Powertrain control module
• Pto
• Recirculation actuator
• Red
• Run
• Start
• Stoplamp switch
• Tbc ign 0 fuse 10a
• Traction control switch
• Transfer case shift control switch
• Transmission control module (tcm)
• Turn signal multifunction switch
• Underhood fuse block (left side of engine compt)

5.3L VIN B, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN B, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A/c comp relay
• A/t
• Acc
• Airbag fuse 15a
• B/u lp fuse 20a
• Backup lamp switch
• Body control module
• C c8
• C1 b2
• C10
• C8 d
• Clutch pedal position switch (m/t)
• D c5
• D10 c1
• Defog relay
• E c3
• Exc 8.1l w/o california lev
• F11
• From ign 1 relay (diagram 3 of 6)
• From ign b fuse (diagram 1 of 6)
• Heated oxygen sensor bank 1 sensor 1
• Heated oxygen sensor bank 1 sensor 2
• Heated oxygen sensor bank 2 sensor 1
• Heated oxygen sensor bank 2 sensor 2
• I/p fuse block (behind left side of dash)
• I/p relay block (near left kick panel)
• Ign e fuse 10a
• Ignition switch
• Inflatable restraint i/p module disable switch
• Inflatable restraint passenger presence system module
• Inflatable restraint sensing & diagnostic module
• Inside rearview mirror
• Instrument panel cluster
• Lock
• M/t
• Mobile radio fuse block (upfitter option)
• Nca
• O2a fuse 15a
• O2b fuse 15a
• Off
• Park/neutral position switch (a/t)
• Pnk
• Red
• Relay a
• Relay b
• Rr wpr fuse 15a
• Run
• Selectable ride switch
• Seo accy fuse 10a
• Seo ign fuse 10a
• Start
• Tbc accy fuse 10a
• Tbc ign 1 fuse 10a
• Turn signal multifunction switch
• Turn signal/ multifunction switch
• W/o 8s8
• Windshield wiper motor module
• Ws wpr fuse 25a

5.3L VIN T

5.3L VIN T, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500:

• (18.5 cm from trailer conn breakout)
• (base) (exc base)
• (in console harness)
• (in i/p harness)
• (in seo harness)
• (not used)
• (w/aux battery) battery (right)
• 4.3l, 8.1l
• 4.8l, 5.3l & 6.0l
• 40a
• 4ws fuse 15a
• A c1
• A c6
• A c7
• A12
• Abs fuse 60a
• Audio amplifier
• Auxiliary battery relay (right rear of engine compt)
• B c9
• B11 c1
• B12 c1
• B2 c3
• Battery (left)
• Battery (right)
• Battery cable junction block
• Body control module
• C7 b
• C9 d
• Cig ltr fuse 15a
• Cigar lighter
• Cool/ fan fuse 10a
• Cool/ fan fuse 40a
• Cool/fan relay 1
• Cool/fan relay 2
• Cool/fan relay 3
• D12 c1
• Data link connector
• Digital radio receiver
• E10
• Eap fuse 15a
• Electronic brake control module
• Emergency vehicle roof lamp relay
• Evaporative emission canister vent solenoid
• Except 4.3l
• Except luxury
• F2 c1
• Fuse b 30a
• Fuse d 30a
• Fusible link 5 (10 ga- red)
• Fusible link 6 (10 ga- red)
• G104 (left rear of engine block)
• G200 (behind right side of dash, near "a" pillar)
• Generator (4.3l & 8.1l)
• Generator (4.8l, 5.3l & 6.0l)
• Harness)
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• I/p relay block (near left kick panel)
• Ign a fuse 40a
• Ign b fuse 40a
• Luxury
• Mega fuse
• Mobile radio fuse block (right side of dash)
• Nca
• Radio
• Radio amp fuse 30a
• Radio fuse 15a
• Rear seat audio (rsa) controller
• Red
• Relay a
• Relay b
• Rr wpr fuse 25a
• Rtd fuse 30a
• S/roof fuse 25a
• S102 (in engine harness)
• S205 s303
• S220 (in seo red
• S221
• S222
• S416
• Starter
• Starter relay
• Stud 1 fuse 40a
• Stud 2 fuse 30a
• Sunroof control module
• Tbc batt fuse 10a
• To 4wd fuse (diagram 5 of 6)
• To ignition switch (diagram 5 of 6)
• To ignition switch (diagram 6 of 6)
• To ipc/dic fuse (diagram 2 of 6)
• Trailer connector (7 way)
• Underhood cooling fan fuse block (left side of eng compt)
• Underhood fuse block (left side of engine compt)
• Vses/ ecas fuse 60a
• W/ aux battery
• W/ dual batteries
• W/ wrecker emergency lamp
• Wrecker relay

5.3L VIN T, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500:

• (6.4 cm from c202 breakout) s335
• (in console harness)
• (in i/p harness)
• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A c10
• A10
• Auto a/c
• Aux pwr fuse 20a
• Auxiliary power outlet (bin)
• Auxiliary power outlet (console)
• Auxiliary power outlet (front)
• B c5
• B11
• B11 c1
• Blower motor control module
• Blower motor resistor assembly
• Blwr fuse 40a
• C1 c2
• C1 f12
• C10
• C3 b
• C4 d
• C4 e6
• C8 a
• D12
• Defog relay
• E c8
• E11 c1
• Electronic brake control module
• Except luxury
• F/pmp relay
• From radio fuse (diagram 1 of 6)
• G200 (behind right side of dash, near "a" pillar)
• Garage door opener
• Generator battery control module (10 series)
• Hvac control module
• Hvac/ecas fuse 10a
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Info fuse 15a
• Instrument panel cluster
• Ipc/dic fuse 10a
• Lh hid fuse 20a
• Luxury
• Manual a/c
• Nca
• Overhead console
• Pcm b fuse 20a
• Powertrain control module
• Rear seat entertainment assembly
• Red
• Remote playback device (cd player)
• Rh hid fuse 20a
• Roof beacon relay
• Roof beacon switch
• Rr defog fuse 30a
• Rr hvac fuse 30a
• Rvc fuse 10a
• Seo b1 fuse 15a
• Seo b2 fuse 30a
• Stop lp fuse 25a
• Stoplamp switch
• Tcmb fuse 10a
• To lbec 1 fuse (diagram 3 of 6)
• Transfer case encoder motor
• Transfer case shift control module
• Transmission control module (tcm)
• Trec fuse 30a
• Vehicle communication interface module
• W/o 8s8

5.3L VIN T, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (lower left side of dash)
• (not used)
• (passenger seat harness)
• A c5
• A c6
• A/c comp fuse 10a
• A/c comp relay
• A10
• A12
• A7 c1
• Aux pwr 2 m/gate fuse 20a
• B c7
• B10
• B12
• B2 c2
• B7 c2
• Body control module
• Bucket
• C c3
• C9 c1
• Ddm fuse 15a
• Driver door module
• Driver door unlock relay
• Drl fuse 10a
• Drl relay
• E c10
• E c7
• E10
• E11 c1
• E12
• E3 c3
• Ecc/ tpm fuse 10a
• Etc/ecm fuse 15a
• Evaporative emissions (evap) canister purge solenoid
• Exc base
• F c3
• F11 c1
• Fog lp fuse 15a
• Fog lp relay
• From mbec 1 fuse (diagram 3 of 6)
• From pcm b fuse (diagram 2 of 6)
• Fuel composition sensor
• Fuel pump relay (secondary) (w/ dual tanks)
• G c4
• G104 (left rear of engine block)
• Harness)
• Hazrd fuse 25a
• Hdlp-hi relay
• Hdlp-low relay
• Horn relay
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Ign 1 relay
• Intake air temperature (iat)/mass airflow (maf) sensor assembly
• Lbec 1 fuse 50a
• Lbec 2 fuse 50a
• Left i/p fuse block
• Lock relay
• Locks fuse 20a
• Lt door circuit breaker 25a
• Lumbar bolster switch (front passenger)
• M c4
• Mbec 1 fuse 50a
• Memory seat module (driver)
• Non bucket
• Park lp relay
• Passenger door module
• Pcm 1 fuse 15a
• Pdm fuse 10a
• Pnk
• Power take off relay
• Powertrain control module
• Red
• Rt doors circuit breaker 25a
• S328
• Sba fuse 15a
• Seat adjuster switch (driver)
• Seat adjuster switch (front passenger)
• Seats circuit breaker 30a
• Tbc 2a fuse 15a
• Tbc 2b fuse 15a
• Tbc 2c fuse 15a
• Throttle actuator control module (except 4.3l)
• Tire pressure monitor (tpm) module
• To ign 1 relay (diagram 3 of 6)
• To inj 1 fuse (diagram 4 of 6)
• To seo ign fuse (diagram 6 of 6)
• Turn signal/ hazard flasher module
• Underhood fuse block (left side of engine compt)
• Unlock relay
• W/s wash fuse 15a
• W/s wash relay
• Window switch (left rear) (crew cab)
• Window switch (right rear)

5.3L VIN T, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500:

• (4.3l)
• (4.8l, 5.3, 6.0l)
• (4.8l, 5.3l, 6.0l)
• (in injector jumper harn)
• (not used)
• 4.3l
• 4.3l, 4.8l, 5.3l, 6.0l
• 4.8l, 5.3l, 6.0l, 8.1l
• 8.1l
• C10
• D10
• E10
• Except 4.3l
• From pcm 1 fuse (diagram 3 of 6)
• Fuel injector 1
• Fuel injector 2
• Fuel injector 3
• Fuel injector 4
• Fuel injector 5
• Fuel injector 6
• Fuel injector 7
• Fuel injector 8
• Ignition coil
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Ignition coil 7
• Ignition coil 8
• Ignition control module
• Inj 1 fuse 15a
• Inj 2 fuse 15a
• Pnk
• Pnk a
• S152 (in injector jumper harness)
• S154
• S159 (in engine harness)
• S160 (in ignition coil jumper harness)
• Underhood fuse block (left side of engine compt)

5.3L VIN T, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500:

• (man a/c)
• (not used)
• (over 8600 gvw) (8600 gvw or less)
• 4wd fuse 15a
• A/t shift lever
• Acc
• Air temperature actuator (left)
• Air temperature actuator (right)
• Automatic transmission
• B10 a1
• Body control module
• Brake fuse 10a
• C1 c9
• C1 e8
• C175
• C2 c2
• Clutch start switch
• Crank fuse 10a
• Cruise
• Cruise control module
• Cruise control on/off switch
• Cruise fuse 10a
• Driver shift request switch
• E11
• Electronic brake control module
• Exc m74 transmission
• F10
• From auxiliary battery relay (diagram 1 of 6)
• From ign a fuse (diagram 1 of 6)
• Front axle actuator
• Htr/ac fuse 30a
• Hvac 1 fuse 10a
• Hvac control module
• I/p fuse block (left side of dash)
• I/p junction block (behind right side of dash)
• Ign 0 fuse 10a
• Ign 3 fuse 10a
• Ignition switch
• Lock
• Mode actuator
• Off
• Pnk
• Power takeoff (pto) switch
• Powertrain control module
• Pto
• Recirculation actuator
• Red
• Run
• Start
• Stoplamp switch
• Tbc ign 0 fuse 10a
• Traction control switch
• Transfer case shift control switch
• Transmission control module (tcm)
• Turn signal multifunction switch
• Underhood fuse block (left side of engine compt)

5.3L VIN T, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A/c comp relay
• A/t
• Acc
• Airbag fuse 15a
• B/u lp fuse 20a
• Backup lamp switch
• Body control module
• C c8
• C1 b2
• C10
• C8 d
• Clutch pedal position switch (m/t)
• D c5
• D10 c1
• Defog relay
• E c3
• Exc 8.1l w/o california lev
• F11
• From ign 1 relay (diagram 3 of 6)
• From ign b fuse (diagram 1 of 6)
• Heated oxygen sensor bank 1 sensor 1
• Heated oxygen sensor bank 1 sensor 2
• Heated oxygen sensor bank 2 sensor 1
• Heated oxygen sensor bank 2 sensor 2
• I/p fuse block (behind left side of dash)
• I/p relay block (near left kick panel)
• Ign e fuse 10a
• Ignition switch
• Inflatable restraint i/p module disable switch
• Inflatable restraint passenger presence system module
• Inflatable restraint sensing & diagnostic module
• Inside rearview mirror
• Instrument panel cluster
• Lock
• M/t
• Mobile radio fuse block (upfitter option)
• Nca
• O2a fuse 15a
• O2b fuse 15a
• Off
• Park/neutral position switch (a/t)
• Pnk
• Red
• Relay a
• Relay b
• Rr wpr fuse 15a
• Run
• Selectable ride switch
• Seo accy fuse 10a
• Seo ign fuse 10a
• Start
• Tbc accy fuse 10a
• Tbc ign 1 fuse 10a
• Turn signal multifunction switch
• Turn signal/ multifunction switch
• W/o 8s8
• Windshield wiper motor module
• Ws wpr fuse 25a

5.3L VIN T, Power Distribution Wiring Diagram, Hybrid (1 of 7) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Power Distribution Wiring Diagram, Hybrid (1 of 7) for GMC Sierra Classic HD 2007 2500:

• (18.5 cm from trailer conn breakout)
• (base) (exc base)
• (in engine harness)
• (in i/p harness) (in console harness)
• (in seo harness)
• (not used)
• (w/aux battery) battery (right)
• 175a
• 40a
• 4ws fuse 15a
• A c1
• A c6
• A12
• Abs fuse 60a
• Audio amplifier
• Auxiliary battery relay (right rear of engine compt)
• B c9
• B11 c1
• B12 c1
• B2 c3
• Battery (left)
• Battery (right)
• Battery cable junction block
• Body control module
• C2 b
• C7 b
• C9 d
• Cig ltr fuse 15a
• Cigar lighter
• Cool/ fan fuse 10a
• Cool/ fan fuse 40a
• Cool/fan relay 1
• Cool/fan relay 2
• Cool/fan relay 3
• D12 c1
• Data link connector
• Digital radio receiver
• E10
• Eap fuse 15a
• Electronic brake control module
• Emergency vehicle roof lamp relay
• Evaporative emission canister vent solenoid
• Except luxury
• F2 c1
• Fuse b 30a
• Fuse d 30a
• Fusible link 5 (10 ga- red)
• Fusible link 6 (10 ga- red)
• G104 (left rear of engine block)
• G200 (behind right side of dash, near "a" pillar)
• Generator
• Harness)
• Hybrid fuse
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Ign a fuse 40a
• Ign b fuse 40a
• Luxury
• Mega fuse
• Mobile radio fuse block (behind right side of dash)
• Nca
• Radio
• Radio amp fuse 30a
• Radio fuse 15a
• Rear seat audio (rsa) controller
• Red
• Relay a
• Relay b
• Rr wpr fuse 25a
• Rtd fuse 30a
• S/roof fuse 25a
• S102
• S205 s303
• S220 (in seo red
• S221
• S222
• S416
• Starter
• Starter relay
• Starter/ generator control module
• Stud 1 fuse 40a
• Stud 2 fuse 30a
• Sunroof control module
• Tbc batt fuse 10a
• To 4wd fuse (diagram 5 of 7)
• To ignition switch (diagram 5 of 7)
• To ignition switch (diagram 6 of 7)
• To ipc/dic fuse (diagram 2 of 7)
• To underhood secondary fuse block (diagram 4 of 7)
• To underhood secondary fuse block (diagram 7 of 7)
• Trailer connector (7 way)
• Underhood cooling fan fuse block (left side of eng compt)
• Underhood fuse block (left side of engine compt)
• Vses/ ecas fuse 60a
• W/ aux battery
• W/ dual batteries
• W/ wrecker emergency lamp
• Wrecker relay

5.3L VIN T, Power Distribution Wiring Diagram, Hybrid (2 of 7) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Power Distribution Wiring Diagram, Hybrid (2 of 7) for GMC Sierra Classic HD 2007 2500:

• (6.4 cm from c202 breakout) s335
• (in i/p harness) (in console harness)
• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A c10
• A10
• Auto a/c
• Aux pwr fuse 20a
• Auxiliary power outlet (bin)
• Auxiliary power outlet (console)
• Auxiliary power outlet (front)
• B c5
• B11
• B11 c1
• Blower motor control module
• Blower motor resistor assembly
• Blwr fuse 40a
• C1 c2
• C1 f12
• C10
• C3 b
• C4 d
• C4 e6
• C8 a
• D12
• Defog relay
• E c8
• E11 c1
• Electronic brake control module
• Except luxury
• F/pmp relay
• From radio fuse (diagram 1 of 7)
• G200 (behind right side of dash, near "a" pillar)
• Garage door opener
• Hvac control module
• Hvac/ecas fuse 10a
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Info fuse 15a
• Instrument panel cluster
• Ipc/dic fuse 10a
• Lh hid fuse 20a
• Luxury
• Manual a/c
• Nca
• Overhead console
• Pcm b fuse 20a
• Powertrain control module
• Rear seat entertainment assembly
• Red
• Remote playback device (cd player)
• Rh hid fuse 20a
• Roof beacon relay
• Roof beacon switch
• Rr defog fuse 30a
• Rr hvac fuse 30a
• Rvc fuse 10a
• Seo b1 fuse 15a
• Seo b2 fuse 30a
• Stop lp fuse 25a
• Stoplamp switch
• Tcm b fuse 10a
• To lbec 1 fuse (diagram 3 of 7)
• Transfer case encoder motor
• Transfer case shift control module
• Transmission control module (tcm)
• Trec fuse 30a
• Vehicle communication interface module
• W/o 8s8

5.3L VIN T, Power Distribution Wiring Diagram, Hybrid (3 of 7) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Power Distribution Wiring Diagram, Hybrid (3 of 7) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (lower left side of dash)
• (not used)
• (passenger seat harness)
• A c5
• A c6
• A/c comp fuse 10a
• A/c comp relay
• A10
• A12
• A7 c1
• Aux pwr 2 m/gate fuse 20a
• B c7
• B10
• B12
• B2 c2
• B7 c2
• Body control module
• Bucket
• C c3
• C9 c1
• Ddm fuse 15a
• Driver door module
• Driver unlock relay
• Drl fuse 10a
• Drl relay
• E c10
• E c7
• E10
• E11 c1
• E12
• E3 c3
• E9 c1
• Ecc/ tpm fuse 10a
• Etc/ecm fuse 15a
• Evaporative emissions (evap) canister purge solenoid
• Exc base
• F c3
• F11 c1
• Fog lp fuse 15a
• Fog lp relay
• From blwr fuse (diagram 2 of 7)
• From mbec 1 fuse (diagram 3 of 7)
• Fuel pump relay (secondary) (w/ dual tanks)
• G c4
• G104 (left rear of engine block)
• Harness)
• Hazrd fuse 25a
• Hdlp-hi relay
• Hdlp-low relay
• Horn relay
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Ign 1 relay
• Lbec 1 fuse 50a
• Lbec 2 fuse 50a
• Lcks fuse 20a
• Left i/p fuse block
• Lock relay
• Lt door circuit breaker 25a
• Lumbar bolster switch (front passenger)
• M c4
• Mass air flow (maf)/ intake air temperature (iat) sensor
• Mbec 1 fuse 50a
• Memory seat module (driver)
• Non bucket
• Park lp relay
• Passenger door module
• Pcm 1 fuse 15a
• Pdm fuse 10a
• Pnk
• Power take off relay
• Powertrain control module
• Red
• Rt doors circuit breaker 25a
• S328
• Sba fuse 15a
• Seat adjuster switch (driver)
• Seat adjuster switch (front passenger)
• Seats circuit breaker 30a
• Tbc 2a fuse 15a
• Tbc 2b fuse 15a
• Tbc 2c fuse 15a
• Throttle actuator control module
• Tire pressure monitor (tpm) module
• To hybrid pwr fuse (diagram 7 of 7)
• To ign 1 relay (diagram 3 of 7)
• To inj 1 fuse (diagram 4 of 7)
• To seo ign fuse (diagram 6 of 7)
• Turn signal/ hazard flasher module
• Underhood fuse block (left side of engine compt)
• Unlock relay
• W/s wash fuse 15a
• W/s wash relay
• Window switch (left rear) (crew cab)
• Window switch (right rear)

5.3L VIN T, Power Distribution Wiring Diagram, Hybrid (4 of 7) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Power Distribution Wiring Diagram, Hybrid (4 of 7) for GMC Sierra Classic HD 2007 2500:

• Aux htr pmp fuse 10a
• Aux htr pmp relay
• C10
• C340
• D10
• E10
• Energy storage box (under rear pass seat)
• Energy storage control module
• Escm fuse 20a
• From pcm 1 fuse (diagram 3 of 7)
• From stud 1 fuse (diagram 1 of 7)
• Fuel injector 1
• Fuel injector 2
• Fuel injector 3
• Fuel injector 4
• Fuel injector 5
• Fuel injector 6
• Fuel injector 7
• Fuel injector 8
• Hcm-b fuse 10a
• Hybrid control module
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Ignition coil 7
• Ignition coil 8
• Inj 1 fuse 15a
• Inj 2 fuse 15a
• Pnk
• Red
• S115
• S159 (in ignition coil jumper harness)
• S160 (in ignition coil jumper harness)
• Trans pmp relay
• Trans pump fuse 15a
• Underhood fuse block (left side of engine compt)
• Underhood secondary fuse block (left side of engine compt)

5.3L VIN T, Power Distribution Wiring Diagram, Hybrid (5 of 7) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Power Distribution Wiring Diagram, Hybrid (5 of 7) for GMC Sierra Classic HD 2007 2500:

• (left side of dash) i/p fuse block
• (man a/c)
• (not used)
• 4wd fuse 15a
• Acc
• Air temperature actuator (left)
• Air temperature actuator (right)
• Automatic transmission
• Body control module
• Brk fuse 10a
• C1 c9
• C1 e8
• C175
• Clutch start switch
• Crank fuse 10a
• Cruise
• Cruise control module
• Cruise control on/off switch
• Cruise fuse 10a
• E11
• Electro hydraulic power steering module
• Electronic brake control module
• Energy storage control module
• Exc m74 transmission
• F10
• From auxiliary battery relay (diagram 1 of 7)
• From ign a fuse (diagram 1 of 7)
• Front axle actuator
• Htr/ac fuse 30a
• Hvac 1 fuse 10a
• Hvac control module
• Hybrid control module
• I/p junction block (behind right side of dash)
• Ign 0 fuse 10a
• Ign 3 fuse 10a
• Ignition switch
• Lock
• Mode actuator
• Off
• Pnk
• Power takeoff (pto) switch
• Powertrain control module
• Pto
• Recirculation actuator
• Red
• Run
• S131 (5 cm from ehps conn breakout)
• S240 (steering column harness)
• Start
• Starter/ generator control module
• Steering wheel speed/position sensor
• Stoplamp switch
• Tbc ign 0 fuse 10a
• Traction control switch
• Transfer case shift control switch
• Transmission control module (tcm)
• Turn signal multifunction switch
• Underhood fuse block (left side of engine compt)

5.3L VIN T, Power Distribution Wiring Diagram, Hybrid (6 of 7) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Power Distribution Wiring Diagram, Hybrid (6 of 7) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A/c comp relay
• A/t
• Acc
• Airbag fuse 15a
• B/u lp fuse 20a
• Backup lamp switch
• Body control module
• C c8
• C1 b2
• C10
• C340
• C8 d
• Clutch pedal position switch (m/t)
• D c5
• D10 c1
• Defog relay
• E c3
• Ehps-i fuse 10a
• Electro hydraulic power steering module
• Energy storage box (under rear pass seat)
• Energy storage control module
• F11
• F9 (not used)
• From ign 1 relay (diagram 3 of 7)
• From ign b fuse (diagram 1 of 7)
• Hcm-i fuse 10a
• Hybrid control module
• I/p fuse block (behind left side of dash)
• I/p relay block (near left kick panel)
• Ign e fuse 10a
• Ignition switch
• Inflatable restraint passenger presence system module
• Inflatable restraint sensing & diagnostic module
• Inside rearview mirror
• Instrument panel cluster
• Lock
• M/t
• Mobile radio fuse block (right side of dash)
• O2a fuse 15a
• O2b fuse 15a
• Off
• Park/neutral position switch
• Pnk
• Red
• Relay a
• Relay b
• Rr wpr fuse 15a
• Run
• S116 (4 cm from fuse block-underhood pnk
• S204 (6 cm from p100)
• Secondary breakout)
• Selectable ride switch
• Seo accy fuse 10a
• Seo ign fuse 10a
• Start
• Tbc accy fuse 10a
• Tbc ign 1 fuse 10a
• Turn signal multifunction switch
• Turn signal/ multifunction switch
• Underhood secondary fuse block (left side of engine compt)
• W/o 8s8
• Windshield wiper motor module
• Ws wpr fuse 25a

5.3L VIN T, Power Distribution Wiring Diagram, Hybrid (7 of 7) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Power Distribution Wiring Diagram, Hybrid (7 of 7) for GMC Sierra Classic HD 2007 2500:

• (engine harness, 23 cm from underhood secondary fuse block) s108
• (in 120-volt harness) s430
• (in accessory power receptacle harness)
• (in energy storage box 120v harness)
• (in epto pigtail)
• Apo neutral
• Apo phase a
• Apo sw sig
• Aux htr pmp relay
• Auxiliary power outlet 120-volt ac (exterior)
• Auxiliary power outlet 120-volt ac (interior)
• Auxiliary power outlet switch
• Coil ctrl
• Computer data lines system
• Energy storage box (under rear pass seat)
• From ign 1 relay (diagram 3 of 7)
• From ign b fuse (diagram 1 of 7)
• G311 (in energy storage box)
• G405 (right rear frame rail)
• Gmlan data (+)
• Gmlan data (-)
• Gnd
• Heated oxygen sensor bank 1 sensor 1
• Heated oxygen sensor bank 1 sensor 2
• Heated oxygen sensor bank 2 sensor 1
• Heated oxygen sensor bank 2 sensor 2
• Hybrid control module (left side of engine compt)
• Hybrid o2a fuse 15a
• Hybrid o2b fuse 15a
• Hybrid pwr fuse 15a
• Ind ctrl
• Interior lights system
• Loop sig-1
• Loop sig-2
• Low ref
• Nca
• Park/ neutral position switch
• Pickup box inner panel assembly
• Pnk
• Pwr maint fuse 10a
• Pwr maint relay
• Red
• Red (8 cm from underhood secondary fuse block breakout) s114
• S113 (11.5 cm from knock sensor conn breakout)
• S130
• S134
• S327
• S330
• S331
• S332
• S431
• Sgcm cool pmp/ fan relay
• Shield
• Starter generator control module (right rear side of eng compt)
• Tan
• Trans pmp relay
• Underhood secondary fuse block (left side of engine compt)

5.3L VIN Z

5.3L VIN Z, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN Z, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500:

• (18.5 cm from trailer conn breakout)
• (base) (exc base)
• (in console harness)
• (in i/p harness)
• (in seo harness)
• (not used)
• (w/aux battery) battery (right)
• 4.3l, 8.1l
• 4.8l, 5.3l & 6.0l
• 40a
• 4ws fuse 15a
• A c1
• A c6
• A c7
• A12
• Abs fuse 60a
• Audio amplifier
• Auxiliary battery relay (right rear of engine compt)
• B c9
• B11 c1
• B12 c1
• B2 c3
• Battery (left)
• Battery (right)
• Battery cable junction block
• Body control module
• C7 b
• C9 d
• Cig ltr fuse 15a
• Cigar lighter
• Cool/ fan fuse 10a
• Cool/ fan fuse 40a
• Cool/fan relay 1
• Cool/fan relay 2
• Cool/fan relay 3
• D12 c1
• Data link connector
• Digital radio receiver
• E10
• Eap fuse 15a
• Electronic brake control module
• Emergency vehicle roof lamp relay
• Evaporative emission canister vent solenoid
• Except 4.3l
• Except luxury
• F2 c1
• Fuse b 30a
• Fuse d 30a
• Fusible link 5 (10 ga- red)
• Fusible link 6 (10 ga- red)
• G104 (left rear of engine block)
• G200 (behind right side of dash, near "a" pillar)
• Generator (4.3l & 8.1l)
• Generator (4.8l, 5.3l & 6.0l)
• Harness)
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• I/p relay block (near left kick panel)
• Ign a fuse 40a
• Ign b fuse 40a
• Luxury
• Mega fuse
• Mobile radio fuse block (right side of dash)
• Nca
• Radio
• Radio amp fuse 30a
• Radio fuse 15a
• Rear seat audio (rsa) controller
• Red
• Relay a
• Relay b
• Rr wpr fuse 25a
• Rtd fuse 30a
• S/roof fuse 25a
• S102 (in engine harness)
• S205 s303
• S220 (in seo red
• S221
• S222
• S416
• Starter
• Starter relay
• Stud 1 fuse 40a
• Stud 2 fuse 30a
• Sunroof control module
• Tbc batt fuse 10a
• To 4wd fuse (diagram 5 of 6)
• To ignition switch (diagram 5 of 6)
• To ignition switch (diagram 6 of 6)
• To ipc/dic fuse (diagram 2 of 6)
• Trailer connector (7 way)
• Underhood cooling fan fuse block (left side of eng compt)
• Underhood fuse block (left side of engine compt)
• Vses/ ecas fuse 60a
• W/ aux battery
• W/ dual batteries
• W/ wrecker emergency lamp
• Wrecker relay

5.3L VIN Z, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN Z, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500:

• (6.4 cm from c202 breakout) s335
• (in console harness)
• (in i/p harness)
• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A c10
• A10
• Auto a/c
• Aux pwr fuse 20a
• Auxiliary power outlet (bin)
• Auxiliary power outlet (console)
• Auxiliary power outlet (front)
• B c5
• B11
• B11 c1
• Blower motor control module
• Blower motor resistor assembly
• Blwr fuse 40a
• C1 c2
• C1 f12
• C10
• C3 b
• C4 d
• C4 e6
• C8 a
• D12
• Defog relay
• E c8
• E11 c1
• Electronic brake control module
• Except luxury
• F/pmp relay
• From radio fuse (diagram 1 of 6)
• G200 (behind right side of dash, near "a" pillar)
• Garage door opener
• Generator battery control module (10 series)
• Hvac control module
• Hvac/ecas fuse 10a
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Info fuse 15a
• Instrument panel cluster
• Ipc/dic fuse 10a
• Lh hid fuse 20a
• Luxury
• Manual a/c
• Nca
• Overhead console
• Pcm b fuse 20a
• Powertrain control module
• Rear seat entertainment assembly
• Red
• Remote playback device (cd player)
• Rh hid fuse 20a
• Roof beacon relay
• Roof beacon switch
• Rr defog fuse 30a
• Rr hvac fuse 30a
• Rvc fuse 10a
• Seo b1 fuse 15a
• Seo b2 fuse 30a
• Stop lp fuse 25a
• Stoplamp switch
• Tcmb fuse 10a
• To lbec 1 fuse (diagram 3 of 6)
• Transfer case encoder motor
• Transfer case shift control module
• Transmission control module (tcm)
• Trec fuse 30a
• Vehicle communication interface module
• W/o 8s8

5.3L VIN Z, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN Z, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (lower left side of dash)
• (not used)
• (passenger seat harness)
• A c5
• A c6
• A/c comp fuse 10a
• A/c comp relay
• A10
• A12
• A7 c1
• Aux pwr 2 m/gate fuse 20a
• B c7
• B10
• B12
• B2 c2
• B7 c2
• Body control module
• Bucket
• C c3
• C9 c1
• Ddm fuse 15a
• Driver door module
• Driver door unlock relay
• Drl fuse 10a
• Drl relay
• E c10
• E c7
• E10
• E11 c1
• E12
• E3 c3
• Ecc/ tpm fuse 10a
• Etc/ecm fuse 15a
• Evaporative emissions (evap) canister purge solenoid
• Exc base
• F c3
• F11 c1
• Fog lp fuse 15a
• Fog lp relay
• From mbec 1 fuse (diagram 3 of 6)
• From pcm b fuse (diagram 2 of 6)
• Fuel composition sensor
• Fuel pump relay (secondary) (w/ dual tanks)
• G c4
• G104 (left rear of engine block)
• Harness)
• Hazrd fuse 25a
• Hdlp-hi relay
• Hdlp-low relay
• Horn relay
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Ign 1 relay
• Intake air temperature (iat)/mass airflow (maf) sensor assembly
• Lbec 1 fuse 50a
• Lbec 2 fuse 50a
• Left i/p fuse block
• Lock relay
• Locks fuse 20a
• Lt door circuit breaker 25a
• Lumbar bolster switch (front passenger)
• M c4
• Mbec 1 fuse 50a
• Memory seat module (driver)
• Non bucket
• Park lp relay
• Passenger door module
• Pcm 1 fuse 15a
• Pdm fuse 10a
• Pnk
• Power take off relay
• Powertrain control module
• Red
• Rt doors circuit breaker 25a
• S328
• Sba fuse 15a
• Seat adjuster switch (driver)
• Seat adjuster switch (front passenger)
• Seats circuit breaker 30a
• Tbc 2a fuse 15a
• Tbc 2b fuse 15a
• Tbc 2c fuse 15a
• Throttle actuator control module (except 4.3l)
• Tire pressure monitor (tpm) module
• To ign 1 relay (diagram 3 of 6)
• To inj 1 fuse (diagram 4 of 6)
• To seo ign fuse (diagram 6 of 6)
• Turn signal/ hazard flasher module
• Underhood fuse block (left side of engine compt)
• Unlock relay
• W/s wash fuse 15a
• W/s wash relay
• Window switch (left rear) (crew cab)
• Window switch (right rear)

5.3L VIN Z, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN Z, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500:

• (4.3l)
• (4.8l, 5.3, 6.0l)
• (4.8l, 5.3l, 6.0l)
• (in injector jumper harn)
• (not used)
• 4.3l
• 4.3l, 4.8l, 5.3l, 6.0l
• 4.8l, 5.3l, 6.0l, 8.1l
• 8.1l
• C10
• D10
• E10
• Except 4.3l
• From pcm 1 fuse (diagram 3 of 6)
• Fuel injector 1
• Fuel injector 2
• Fuel injector 3
• Fuel injector 4
• Fuel injector 5
• Fuel injector 6
• Fuel injector 7
• Fuel injector 8
• Ignition coil
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Ignition coil 7
• Ignition coil 8
• Ignition control module
• Inj 1 fuse 15a
• Inj 2 fuse 15a
• Pnk
• Pnk a
• S152 (in injector jumper harness)
• S154
• S159 (in engine harness)
• S160 (in ignition coil jumper harness)
• Underhood fuse block (left side of engine compt)

5.3L VIN Z, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN Z, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500:

• (man a/c)
• (not used)
• (over 8600 gvw) (8600 gvw or less)
• 4wd fuse 15a
• A/t shift lever
• Acc
• Air temperature actuator (left)
• Air temperature actuator (right)
• Automatic transmission
• B10 a1
• Body control module
• Brake fuse 10a
• C1 c9
• C1 e8
• C175
• C2 c2
• Clutch start switch
• Crank fuse 10a
• Cruise
• Cruise control module
• Cruise control on/off switch
• Cruise fuse 10a
• Driver shift request switch
• E11
• Electronic brake control module
• Exc m74 transmission
• F10
• From auxiliary battery relay (diagram 1 of 6)
• From ign a fuse (diagram 1 of 6)
• Front axle actuator
• Htr/ac fuse 30a
• Hvac 1 fuse 10a
• Hvac control module
• I/p fuse block (left side of dash)
• I/p junction block (behind right side of dash)
• Ign 0 fuse 10a
• Ign 3 fuse 10a
• Ignition switch
• Lock
• Mode actuator
• Off
• Pnk
• Power takeoff (pto) switch
• Powertrain control module
• Pto
• Recirculation actuator
• Red
• Run
• Start
• Stoplamp switch
• Tbc ign 0 fuse 10a
• Traction control switch
• Transfer case shift control switch
• Transmission control module (tcm)
• Turn signal multifunction switch
• Underhood fuse block (left side of engine compt)

5.3L VIN Z, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN Z, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A/c comp relay
• A/t
• Acc
• Airbag fuse 15a
• B/u lp fuse 20a
• Backup lamp switch
• Body control module
• C c8
• C1 b2
• C10
• C8 d
• Clutch pedal position switch (m/t)
• D c5
• D10 c1
• Defog relay
• E c3
• Exc 8.1l w/o california lev
• F11
• From ign 1 relay (diagram 3 of 6)
• From ign b fuse (diagram 1 of 6)
• Heated oxygen sensor bank 1 sensor 1
• Heated oxygen sensor bank 1 sensor 2
• Heated oxygen sensor bank 2 sensor 1
• Heated oxygen sensor bank 2 sensor 2
• I/p fuse block (behind left side of dash)
• I/p relay block (near left kick panel)
• Ign e fuse 10a
• Ignition switch
• Inflatable restraint i/p module disable switch
• Inflatable restraint passenger presence system module
• Inflatable restraint sensing & diagnostic module
• Inside rearview mirror
• Instrument panel cluster
• Lock
• M/t
• Mobile radio fuse block (upfitter option)
• Nca
• O2a fuse 15a
• O2b fuse 15a
• Off
• Park/neutral position switch (a/t)
• Pnk
• Red
• Relay a
• Relay b
• Rr wpr fuse 15a
• Run
• Selectable ride switch
• Seo accy fuse 10a
• Seo ign fuse 10a
• Start
• Tbc accy fuse 10a
• Tbc ign 1 fuse 10a
• Turn signal multifunction switch
• Turn signal/ multifunction switch
• W/o 8s8
• Windshield wiper motor module
• Ws wpr fuse 25a

6.0L BI-FUEL

6.0L Bi-Fuel, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L Bi-Fuel, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500:

• (18.5 cm from trailer conn breakout)
• (base) (exc base)
• (in console harness)
• (in i/p harness)
• (in seo harness)
• (not used)
• (w/aux battery) battery (right)
• 4.3l, 8.1l
• 4.8l, 5.3l & 6.0l
• 40a
• 4ws fuse 15a
• A c1
• A c6
• A c7
• A12
• Abs fuse 60a
• Audio amplifier
• Auxiliary battery relay (right rear of engine compt)
• B c9
• B11 c1
• B12 c1
• B2 c3
• Battery (left)
• Battery (right)
• Battery cable junction block
• Body control module
• C7 b
• C9 d
• Cig ltr fuse 15a
• Cigar lighter
• Cool/ fan fuse 10a
• Cool/ fan fuse 40a
• Cool/fan relay 1
• Cool/fan relay 2
• Cool/fan relay 3
• D12 c1
• Data link connector
• Digital radio receiver
• E10
• Eap fuse 15a
• Electronic brake control module
• Emergency vehicle roof lamp relay
• Evaporative emission canister vent solenoid
• Except 4.3l
• Except luxury
• F2 c1
• Fuse b 30a
• Fuse d 30a
• Fusible link 5 (10 ga- red)
• Fusible link 6 (10 ga- red)
• G104 (left rear of engine block)
• G200 (behind right side of dash, near "a" pillar)
• Generator (4.3l & 8.1l)
• Generator (4.8l, 5.3l & 6.0l)
• Harness)
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• I/p relay block (near left kick panel)
• Ign a fuse 40a
• Ign b fuse 40a
• Luxury
• Mega fuse
• Mobile radio fuse block (right side of dash)
• Nca
• Radio
• Radio amp fuse 30a
• Radio fuse 15a
• Rear seat audio (rsa) controller
• Red
• Relay a
• Relay b
• Rr wpr fuse 25a
• Rtd fuse 30a
• S/roof fuse 25a
• S102 (in engine harness)
• S205 s303
• S220 (in seo red
• S221
• S222
• S416
• Starter
• Starter relay
• Stud 1 fuse 40a
• Stud 2 fuse 30a
• Sunroof control module
• Tbc batt fuse 10a
• To 4wd fuse (diagram 5 of 6)
• To ignition switch (diagram 5 of 6)
• To ignition switch (diagram 6 of 6)
• To ipc/dic fuse (diagram 2 of 6)
• Trailer connector (7 way)
• Underhood cooling fan fuse block (left side of eng compt)
• Underhood fuse block (left side of engine compt)
• Vses/ ecas fuse 60a
• W/ aux battery
• W/ dual batteries
• W/ wrecker emergency lamp
• Wrecker relay

6.0L Bi-Fuel, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L Bi-Fuel, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500:

• (6.4 cm from c202 breakout) s335
• (in console harness)
• (in i/p harness)
• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A c10
• A10
• Auto a/c
• Aux pwr fuse 20a
• Auxiliary power outlet (bin)
• Auxiliary power outlet (console)
• Auxiliary power outlet (front)
• B c5
• B11
• B11 c1
• Blower motor control module
• Blower motor resistor assembly
• Blwr fuse 40a
• C1 c2
• C1 f12
• C10
• C3 b
• C4 d
• C4 e6
• C8 a
• D12
• Defog relay
• E c8
• E11 c1
• Electronic brake control module
• Except luxury
• F/pmp relay
• From radio fuse (diagram 1 of 6)
• G200 (behind right side of dash, near "a" pillar)
• Garage door opener
• Generator battery control module (10 series)
• Hvac control module
• Hvac/ecas fuse 10a
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Info fuse 15a
• Instrument panel cluster
• Ipc/dic fuse 10a
• Lh hid fuse 20a
• Luxury
• Manual a/c
• Nca
• Overhead console
• Pcm b fuse 20a
• Powertrain control module
• Rear seat entertainment assembly
• Red
• Remote playback device (cd player)
• Rh hid fuse 20a
• Roof beacon relay
• Roof beacon switch
• Rr defog fuse 30a
• Rr hvac fuse 30a
• Rvc fuse 10a
• Seo b1 fuse 15a
• Seo b2 fuse 30a
• Stop lp fuse 25a
• Stoplamp switch
• Tcmb fuse 10a
• To lbec 1 fuse (diagram 3 of 6)
• Transfer case encoder motor
• Transfer case shift control module
• Transmission control module (tcm)
• Trec fuse 30a
• Vehicle communication interface module
• W/o 8s8

6.0L Bi-Fuel, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L Bi-Fuel, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (lower left side of dash)
• (not used)
• (passenger seat harness)
• A c5
• A c6
• A/c comp fuse 10a
• A/c comp relay
• A10
• A12
• A7 c1
• Aux pwr 2 m/gate fuse 20a
• B c7
• B10
• B12
• B2 c2
• B7 c2
• Body control module
• Bucket
• C c3
• C9 c1
• Ddm fuse 15a
• Driver door module
• Driver door unlock relay
• Drl fuse 10a
• Drl relay
• E c10
• E c7
• E10
• E11 c1
• E12
• E3 c3
• Ecc/ tpm fuse 10a
• Etc/ecm fuse 15a
• Evaporative emissions (evap) canister purge solenoid
• Exc base
• F c3
• F11 c1
• Fog lp fuse 15a
• Fog lp relay
• From mbec 1 fuse (diagram 3 of 6)
• From pcm b fuse (diagram 2 of 6)
• Fuel composition sensor
• Fuel pump relay (secondary) (w/ dual tanks)
• G c4
• G104 (left rear of engine block)
• Harness)
• Hazrd fuse 25a
• Hdlp-hi relay
• Hdlp-low relay
• Horn relay
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Ign 1 relay
• Intake air temperature (iat)/mass airflow (maf) sensor assembly
• Lbec 1 fuse 50a
• Lbec 2 fuse 50a
• Left i/p fuse block
• Lock relay
• Locks fuse 20a
• Lt door circuit breaker 25a
• Lumbar bolster switch (front passenger)
• M c4
• Mbec 1 fuse 50a
• Memory seat module (driver)
• Non bucket
• Park lp relay
• Passenger door module
• Pcm 1 fuse 15a
• Pdm fuse 10a
• Pnk
• Power take off relay
• Powertrain control module
• Red
• Rt doors circuit breaker 25a
• S328
• Sba fuse 15a
• Seat adjuster switch (driver)
• Seat adjuster switch (front passenger)
• Seats circuit breaker 30a
• Tbc 2a fuse 15a
• Tbc 2b fuse 15a
• Tbc 2c fuse 15a
• Throttle actuator control module (except 4.3l)
• Tire pressure monitor (tpm) module
• To ign 1 relay (diagram 3 of 6)
• To inj 1 fuse (diagram 4 of 6)
• To seo ign fuse (diagram 6 of 6)
• Turn signal/ hazard flasher module
• Underhood fuse block (left side of engine compt)
• Unlock relay
• W/s wash fuse 15a
• W/s wash relay
• Window switch (left rear) (crew cab)
• Window switch (right rear)

6.0L Bi-Fuel, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L Bi-Fuel, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500:

• (4.3l)
• (4.8l, 5.3, 6.0l)
• (4.8l, 5.3l, 6.0l)
• (in injector jumper harn)
• (not used)
• 4.3l
• 4.3l, 4.8l, 5.3l, 6.0l
• 4.8l, 5.3l, 6.0l, 8.1l
• 8.1l
• C10
• D10
• E10
• Except 4.3l
• From pcm 1 fuse (diagram 3 of 6)
• Fuel injector 1
• Fuel injector 2
• Fuel injector 3
• Fuel injector 4
• Fuel injector 5
• Fuel injector 6
• Fuel injector 7
• Fuel injector 8
• Ignition coil
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Ignition coil 7
• Ignition coil 8
• Ignition control module
• Inj 1 fuse 15a
• Inj 2 fuse 15a
• Pnk
• Pnk a
• S152 (in injector jumper harness)
• S154
• S159 (in engine harness)
• S160 (in ignition coil jumper harness)
• Underhood fuse block (left side of engine compt)

6.0L Bi-Fuel, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L Bi-Fuel, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500:

• (man a/c)
• (not used)
• (over 8600 gvw) (8600 gvw or less)
• 4wd fuse 15a
• A/t shift lever
• Acc
• Air temperature actuator (left)
• Air temperature actuator (right)
• Automatic transmission
• B10 a1
• Body control module
• Brake fuse 10a
• C1 c9
• C1 e8
• C175
• C2 c2
• Clutch start switch
• Crank fuse 10a
• Cruise
• Cruise control module
• Cruise control on/off switch
• Cruise fuse 10a
• Driver shift request switch
• E11
• Electronic brake control module
• Exc m74 transmission
• F10
• From auxiliary battery relay (diagram 1 of 6)
• From ign a fuse (diagram 1 of 6)
• Front axle actuator
• Htr/ac fuse 30a
• Hvac 1 fuse 10a
• Hvac control module
• I/p fuse block (left side of dash)
• I/p junction block (behind right side of dash)
• Ign 0 fuse 10a
• Ign 3 fuse 10a
• Ignition switch
• Lock
• Mode actuator
• Off
• Pnk
• Power takeoff (pto) switch
• Powertrain control module
• Pto
• Recirculation actuator
• Red
• Run
• Start
• Stoplamp switch
• Tbc ign 0 fuse 10a
• Traction control switch
• Transfer case shift control switch
• Transmission control module (tcm)
• Turn signal multifunction switch
• Underhood fuse block (left side of engine compt)

6.0L Bi-Fuel, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L Bi-Fuel, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A/c comp relay
• A/t
• Acc
• Airbag fuse 15a
• B/u lp fuse 20a
• Backup lamp switch
• Body control module
• C c8
• C1 b2
• C10
• C8 d
• Clutch pedal position switch (m/t)
• D c5
• D10 c1
• Defog relay
• E c3
• Exc 8.1l w/o california lev
• F11
• From ign 1 relay (diagram 3 of 6)
• From ign b fuse (diagram 1 of 6)
• Heated oxygen sensor bank 1 sensor 1
• Heated oxygen sensor bank 1 sensor 2
• Heated oxygen sensor bank 2 sensor 1
• Heated oxygen sensor bank 2 sensor 2
• I/p fuse block (behind left side of dash)
• I/p relay block (near left kick panel)
• Ign e fuse 10a
• Ignition switch
• Inflatable restraint i/p module disable switch
• Inflatable restraint passenger presence system module
• Inflatable restraint sensing & diagnostic module
• Inside rearview mirror
• Instrument panel cluster
• Lock
• M/t
• Mobile radio fuse block (upfitter option)
• Nca
• O2a fuse 15a
• O2b fuse 15a
• Off
• Park/neutral position switch (a/t)
• Pnk
• Red
• Relay a
• Relay b
• Rr wpr fuse 15a
• Run
• Selectable ride switch
• Seo accy fuse 10a
• Seo ign fuse 10a
• Start
• Tbc accy fuse 10a
• Tbc ign 1 fuse 10a
• Turn signal multifunction switch
• Turn signal/ multifunction switch
• W/o 8s8
• Windshield wiper motor module
• Ws wpr fuse 25a

6.0L VIN N

6.0L VIN N, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN N, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500:

• (18.5 cm from trailer conn breakout)
• (base) (exc base)
• (in console harness)
• (in i/p harness)
• (in seo harness)
• (not used)
• (w/aux battery) battery (right)
• 4.3l, 8.1l
• 4.8l, 5.3l & 6.0l
• 40a
• 4ws fuse 15a
• A c1
• A c6
• A c7
• A12
• Abs fuse 60a
• Audio amplifier
• Auxiliary battery relay (right rear of engine compt)
• B c9
• B11 c1
• B12 c1
• B2 c3
• Battery (left)
• Battery (right)
• Battery cable junction block
• Body control module
• C7 b
• C9 d
• Cig ltr fuse 15a
• Cigar lighter
• Cool/ fan fuse 10a
• Cool/ fan fuse 40a
• Cool/fan relay 1
• Cool/fan relay 2
• Cool/fan relay 3
• D12 c1
• Data link connector
• Digital radio receiver
• E10
• Eap fuse 15a
• Electronic brake control module
• Emergency vehicle roof lamp relay
• Evaporative emission canister vent solenoid
• Except 4.3l
• Except luxury
• F2 c1
• Fuse b 30a
• Fuse d 30a
• Fusible link 5 (10 ga- red)
• Fusible link 6 (10 ga- red)
• G104 (left rear of engine block)
• G200 (behind right side of dash, near "a" pillar)
• Generator (4.3l & 8.1l)
• Generator (4.8l, 5.3l & 6.0l)
• Harness)
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• I/p relay block (near left kick panel)
• Ign a fuse 40a
• Ign b fuse 40a
• Luxury
• Mega fuse
• Mobile radio fuse block (right side of dash)
• Nca
• Radio
• Radio amp fuse 30a
• Radio fuse 15a
• Rear seat audio (rsa) controller
• Red
• Relay a
• Relay b
• Rr wpr fuse 25a
• Rtd fuse 30a
• S/roof fuse 25a
• S102 (in engine harness)
• S205 s303
• S220 (in seo red
• S221
• S222
• S416
• Starter
• Starter relay
• Stud 1 fuse 40a
• Stud 2 fuse 30a
• Sunroof control module
• Tbc batt fuse 10a
• To 4wd fuse (diagram 5 of 6)
• To ignition switch (diagram 5 of 6)
• To ignition switch (diagram 6 of 6)
• To ipc/dic fuse (diagram 2 of 6)
• Trailer connector (7 way)
• Underhood cooling fan fuse block (left side of eng compt)
• Underhood fuse block (left side of engine compt)
• Vses/ ecas fuse 60a
• W/ aux battery
• W/ dual batteries
• W/ wrecker emergency lamp
• Wrecker relay

6.0L VIN N, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN N, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500:

• (6.4 cm from c202 breakout) s335
• (in console harness)
• (in i/p harness)
• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A c10
• A10
• Auto a/c
• Aux pwr fuse 20a
• Auxiliary power outlet (bin)
• Auxiliary power outlet (console)
• Auxiliary power outlet (front)
• B c5
• B11
• B11 c1
• Blower motor control module
• Blower motor resistor assembly
• Blwr fuse 40a
• C1 c2
• C1 f12
• C10
• C3 b
• C4 d
• C4 e6
• C8 a
• D12
• Defog relay
• E c8
• E11 c1
• Electronic brake control module
• Except luxury
• F/pmp relay
• From radio fuse (diagram 1 of 6)
• G200 (behind right side of dash, near "a" pillar)
• Garage door opener
• Generator battery control module (10 series)
• Hvac control module
• Hvac/ecas fuse 10a
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Info fuse 15a
• Instrument panel cluster
• Ipc/dic fuse 10a
• Lh hid fuse 20a
• Luxury
• Manual a/c
• Nca
• Overhead console
• Pcm b fuse 20a
• Powertrain control module
• Rear seat entertainment assembly
• Red
• Remote playback device (cd player)
• Rh hid fuse 20a
• Roof beacon relay
• Roof beacon switch
• Rr defog fuse 30a
• Rr hvac fuse 30a
• Rvc fuse 10a
• Seo b1 fuse 15a
• Seo b2 fuse 30a
• Stop lp fuse 25a
• Stoplamp switch
• Tcmb fuse 10a
• To lbec 1 fuse (diagram 3 of 6)
• Transfer case encoder motor
• Transfer case shift control module
• Transmission control module (tcm)
• Trec fuse 30a
• Vehicle communication interface module
• W/o 8s8

6.0L VIN N, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN N, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (lower left side of dash)
• (not used)
• (passenger seat harness)
• A c5
• A c6
• A/c comp fuse 10a
• A/c comp relay
• A10
• A12
• A7 c1
• Aux pwr 2 m/gate fuse 20a
• B c7
• B10
• B12
• B2 c2
• B7 c2
• Body control module
• Bucket
• C c3
• C9 c1
• Ddm fuse 15a
• Driver door module
• Driver door unlock relay
• Drl fuse 10a
• Drl relay
• E c10
• E c7
• E10
• E11 c1
• E12
• E3 c3
• Ecc/ tpm fuse 10a
• Etc/ecm fuse 15a
• Evaporative emissions (evap) canister purge solenoid
• Exc base
• F c3
• F11 c1
• Fog lp fuse 15a
• Fog lp relay
• From mbec 1 fuse (diagram 3 of 6)
• From pcm b fuse (diagram 2 of 6)
• Fuel composition sensor
• Fuel pump relay (secondary) (w/ dual tanks)
• G c4
• G104 (left rear of engine block)
• Harness)
• Hazrd fuse 25a
• Hdlp-hi relay
• Hdlp-low relay
• Horn relay
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Ign 1 relay
• Intake air temperature (iat)/mass airflow (maf) sensor assembly
• Lbec 1 fuse 50a
• Lbec 2 fuse 50a
• Left i/p fuse block
• Lock relay
• Locks fuse 20a
• Lt door circuit breaker 25a
• Lumbar bolster switch (front passenger)
• M c4
• Mbec 1 fuse 50a
• Memory seat module (driver)
• Non bucket
• Park lp relay
• Passenger door module
• Pcm 1 fuse 15a
• Pdm fuse 10a
• Pnk
• Power take off relay
• Powertrain control module
• Red
• Rt doors circuit breaker 25a
• S328
• Sba fuse 15a
• Seat adjuster switch (driver)
• Seat adjuster switch (front passenger)
• Seats circuit breaker 30a
• Tbc 2a fuse 15a
• Tbc 2b fuse 15a
• Tbc 2c fuse 15a
• Throttle actuator control module (except 4.3l)
• Tire pressure monitor (tpm) module
• To ign 1 relay (diagram 3 of 6)
• To inj 1 fuse (diagram 4 of 6)
• To seo ign fuse (diagram 6 of 6)
• Turn signal/ hazard flasher module
• Underhood fuse block (left side of engine compt)
• Unlock relay
• W/s wash fuse 15a
• W/s wash relay
• Window switch (left rear) (crew cab)
• Window switch (right rear)

6.0L VIN N, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN N, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500:

• (4.3l)
• (4.8l, 5.3, 6.0l)
• (4.8l, 5.3l, 6.0l)
• (in injector jumper harn)
• (not used)
• 4.3l
• 4.3l, 4.8l, 5.3l, 6.0l
• 4.8l, 5.3l, 6.0l, 8.1l
• 8.1l
• C10
• D10
• E10
• Except 4.3l
• From pcm 1 fuse (diagram 3 of 6)
• Fuel injector 1
• Fuel injector 2
• Fuel injector 3
• Fuel injector 4
• Fuel injector 5
• Fuel injector 6
• Fuel injector 7
• Fuel injector 8
• Ignition coil
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Ignition coil 7
• Ignition coil 8
• Ignition control module
• Inj 1 fuse 15a
• Inj 2 fuse 15a
• Pnk
• Pnk a
• S152 (in injector jumper harness)
• S154
• S159 (in engine harness)
• S160 (in ignition coil jumper harness)
• Underhood fuse block (left side of engine compt)

6.0L VIN N, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN N, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500:

• (man a/c)
• (not used)
• (over 8600 gvw) (8600 gvw or less)
• 4wd fuse 15a
• A/t shift lever
• Acc
• Air temperature actuator (left)
• Air temperature actuator (right)
• Automatic transmission
• B10 a1
• Body control module
• Brake fuse 10a
• C1 c9
• C1 e8
• C175
• C2 c2
• Clutch start switch
• Crank fuse 10a
• Cruise
• Cruise control module
• Cruise control on/off switch
• Cruise fuse 10a
• Driver shift request switch
• E11
• Electronic brake control module
• Exc m74 transmission
• F10
• From auxiliary battery relay (diagram 1 of 6)
• From ign a fuse (diagram 1 of 6)
• Front axle actuator
• Htr/ac fuse 30a
• Hvac 1 fuse 10a
• Hvac control module
• I/p fuse block (left side of dash)
• I/p junction block (behind right side of dash)
• Ign 0 fuse 10a
• Ign 3 fuse 10a
• Ignition switch
• Lock
• Mode actuator
• Off
• Pnk
• Power takeoff (pto) switch
• Powertrain control module
• Pto
• Recirculation actuator
• Red
• Run
• Start
• Stoplamp switch
• Tbc ign 0 fuse 10a
• Traction control switch
• Transfer case shift control switch
• Transmission control module (tcm)
• Turn signal multifunction switch
• Underhood fuse block (left side of engine compt)

6.0L VIN N, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN N, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A/c comp relay
• A/t
• Acc
• Airbag fuse 15a
• B/u lp fuse 20a
• Backup lamp switch
• Body control module
• C c8
• C1 b2
• C10
• C8 d
• Clutch pedal position switch (m/t)
• D c5
• D10 c1
• Defog relay
• E c3
• Exc 8.1l w/o california lev
• F11
• From ign 1 relay (diagram 3 of 6)
• From ign b fuse (diagram 1 of 6)
• Heated oxygen sensor bank 1 sensor 1
• Heated oxygen sensor bank 1 sensor 2
• Heated oxygen sensor bank 2 sensor 1
• Heated oxygen sensor bank 2 sensor 2
• I/p fuse block (behind left side of dash)
• I/p relay block (near left kick panel)
• Ign e fuse 10a
• Ignition switch
• Inflatable restraint i/p module disable switch
• Inflatable restraint passenger presence system module
• Inflatable restraint sensing & diagnostic module
• Inside rearview mirror
• Instrument panel cluster
• Lock
• M/t
• Mobile radio fuse block (upfitter option)
• Nca
• O2a fuse 15a
• O2b fuse 15a
• Off
• Park/neutral position switch (a/t)
• Pnk
• Red
• Relay a
• Relay b
• Rr wpr fuse 15a
• Run
• Selectable ride switch
• Seo accy fuse 10a
• Seo ign fuse 10a
• Start
• Tbc accy fuse 10a
• Tbc ign 1 fuse 10a
• Turn signal multifunction switch
• Turn signal/ multifunction switch
• W/o 8s8
• Windshield wiper motor module
• Ws wpr fuse 25a

6.0L VIN U

6.0L VIN U, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN U, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500:

• (18.5 cm from trailer conn breakout)
• (base) (exc base)
• (in console harness)
• (in i/p harness)
• (in seo harness)
• (not used)
• (w/aux battery) battery (right)
• 4.3l, 8.1l
• 4.8l, 5.3l & 6.0l
• 40a
• 4ws fuse 15a
• A c1
• A c6
• A c7
• A12
• Abs fuse 60a
• Audio amplifier
• Auxiliary battery relay (right rear of engine compt)
• B c9
• B11 c1
• B12 c1
• B2 c3
• Battery (left)
• Battery (right)
• Battery cable junction block
• Body control module
• C7 b
• C9 d
• Cig ltr fuse 15a
• Cigar lighter
• Cool/ fan fuse 10a
• Cool/ fan fuse 40a
• Cool/fan relay 1
• Cool/fan relay 2
• Cool/fan relay 3
• D12 c1
• Data link connector
• Digital radio receiver
• E10
• Eap fuse 15a
• Electronic brake control module
• Emergency vehicle roof lamp relay
• Evaporative emission canister vent solenoid
• Except 4.3l
• Except luxury
• F2 c1
• Fuse b 30a
• Fuse d 30a
• Fusible link 5 (10 ga- red)
• Fusible link 6 (10 ga- red)
• G104 (left rear of engine block)
• G200 (behind right side of dash, near "a" pillar)
• Generator (4.3l & 8.1l)
• Generator (4.8l, 5.3l & 6.0l)
• Harness)
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• I/p relay block (near left kick panel)
• Ign a fuse 40a
• Ign b fuse 40a
• Luxury
• Mega fuse
• Mobile radio fuse block (right side of dash)
• Nca
• Radio
• Radio amp fuse 30a
• Radio fuse 15a
• Rear seat audio (rsa) controller
• Red
• Relay a
• Relay b
• Rr wpr fuse 25a
• Rtd fuse 30a
• S/roof fuse 25a
• S102 (in engine harness)
• S205 s303
• S220 (in seo red
• S221
• S222
• S416
• Starter
• Starter relay
• Stud 1 fuse 40a
• Stud 2 fuse 30a
• Sunroof control module
• Tbc batt fuse 10a
• To 4wd fuse (diagram 5 of 6)
• To ignition switch (diagram 5 of 6)
• To ignition switch (diagram 6 of 6)
• To ipc/dic fuse (diagram 2 of 6)
• Trailer connector (7 way)
• Underhood cooling fan fuse block (left side of eng compt)
• Underhood fuse block (left side of engine compt)
• Vses/ ecas fuse 60a
• W/ aux battery
• W/ dual batteries
• W/ wrecker emergency lamp
• Wrecker relay

6.0L VIN U, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN U, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500:

• (6.4 cm from c202 breakout) s335
• (in console harness)
• (in i/p harness)
• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A c10
• A10
• Auto a/c
• Aux pwr fuse 20a
• Auxiliary power outlet (bin)
• Auxiliary power outlet (console)
• Auxiliary power outlet (front)
• B c5
• B11
• B11 c1
• Blower motor control module
• Blower motor resistor assembly
• Blwr fuse 40a
• C1 c2
• C1 f12
• C10
• C3 b
• C4 d
• C4 e6
• C8 a
• D12
• Defog relay
• E c8
• E11 c1
• Electronic brake control module
• Except luxury
• F/pmp relay
• From radio fuse (diagram 1 of 6)
• G200 (behind right side of dash, near "a" pillar)
• Garage door opener
• Generator battery control module (10 series)
• Hvac control module
• Hvac/ecas fuse 10a
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Info fuse 15a
• Instrument panel cluster
• Ipc/dic fuse 10a
• Lh hid fuse 20a
• Luxury
• Manual a/c
• Nca
• Overhead console
• Pcm b fuse 20a
• Powertrain control module
• Rear seat entertainment assembly
• Red
• Remote playback device (cd player)
• Rh hid fuse 20a
• Roof beacon relay
• Roof beacon switch
• Rr defog fuse 30a
• Rr hvac fuse 30a
• Rvc fuse 10a
• Seo b1 fuse 15a
• Seo b2 fuse 30a
• Stop lp fuse 25a
• Stoplamp switch
• Tcmb fuse 10a
• To lbec 1 fuse (diagram 3 of 6)
• Transfer case encoder motor
• Transfer case shift control module
• Transmission control module (tcm)
• Trec fuse 30a
• Vehicle communication interface module
• W/o 8s8

6.0L VIN U, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN U, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (lower left side of dash)
• (not used)
• (passenger seat harness)
• A c5
• A c6
• A/c comp fuse 10a
• A/c comp relay
• A10
• A12
• A7 c1
• Aux pwr 2 m/gate fuse 20a
• B c7
• B10
• B12
• B2 c2
• B7 c2
• Body control module
• Bucket
• C c3
• C9 c1
• Ddm fuse 15a
• Driver door module
• Driver door unlock relay
• Drl fuse 10a
• Drl relay
• E c10
• E c7
• E10
• E11 c1
• E12
• E3 c3
• Ecc/ tpm fuse 10a
• Etc/ecm fuse 15a
• Evaporative emissions (evap) canister purge solenoid
• Exc base
• F c3
• F11 c1
• Fog lp fuse 15a
• Fog lp relay
• From mbec 1 fuse (diagram 3 of 6)
• From pcm b fuse (diagram 2 of 6)
• Fuel composition sensor
• Fuel pump relay (secondary) (w/ dual tanks)
• G c4
• G104 (left rear of engine block)
• Harness)
• Hazrd fuse 25a
• Hdlp-hi relay
• Hdlp-low relay
• Horn relay
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Ign 1 relay
• Intake air temperature (iat)/mass airflow (maf) sensor assembly
• Lbec 1 fuse 50a
• Lbec 2 fuse 50a
• Left i/p fuse block
• Lock relay
• Locks fuse 20a
• Lt door circuit breaker 25a
• Lumbar bolster switch (front passenger)
• M c4
• Mbec 1 fuse 50a
• Memory seat module (driver)
• Non bucket
• Park lp relay
• Passenger door module
• Pcm 1 fuse 15a
• Pdm fuse 10a
• Pnk
• Power take off relay
• Powertrain control module
• Red
• Rt doors circuit breaker 25a
• S328
• Sba fuse 15a
• Seat adjuster switch (driver)
• Seat adjuster switch (front passenger)
• Seats circuit breaker 30a
• Tbc 2a fuse 15a
• Tbc 2b fuse 15a
• Tbc 2c fuse 15a
• Throttle actuator control module (except 4.3l)
• Tire pressure monitor (tpm) module
• To ign 1 relay (diagram 3 of 6)
• To inj 1 fuse (diagram 4 of 6)
• To seo ign fuse (diagram 6 of 6)
• Turn signal/ hazard flasher module
• Underhood fuse block (left side of engine compt)
• Unlock relay
• W/s wash fuse 15a
• W/s wash relay
• Window switch (left rear) (crew cab)
• Window switch (right rear)

6.0L VIN U, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN U, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500:

• (4.3l)
• (4.8l, 5.3, 6.0l)
• (4.8l, 5.3l, 6.0l)
• (in injector jumper harn)
• (not used)
• 4.3l
• 4.3l, 4.8l, 5.3l, 6.0l
• 4.8l, 5.3l, 6.0l, 8.1l
• 8.1l
• C10
• D10
• E10
• Except 4.3l
• From pcm 1 fuse (diagram 3 of 6)
• Fuel injector 1
• Fuel injector 2
• Fuel injector 3
• Fuel injector 4
• Fuel injector 5
• Fuel injector 6
• Fuel injector 7
• Fuel injector 8
• Ignition coil
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Ignition coil 7
• Ignition coil 8
• Ignition control module
• Inj 1 fuse 15a
• Inj 2 fuse 15a
• Pnk
• Pnk a
• S152 (in injector jumper harness)
• S154
• S159 (in engine harness)
• S160 (in ignition coil jumper harness)
• Underhood fuse block (left side of engine compt)

6.0L VIN U, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN U, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500:

• (man a/c)
• (not used)
• (over 8600 gvw) (8600 gvw or less)
• 4wd fuse 15a
• A/t shift lever
• Acc
• Air temperature actuator (left)
• Air temperature actuator (right)
• Automatic transmission
• B10 a1
• Body control module
• Brake fuse 10a
• C1 c9
• C1 e8
• C175
• C2 c2
• Clutch start switch
• Crank fuse 10a
• Cruise
• Cruise control module
• Cruise control on/off switch
• Cruise fuse 10a
• Driver shift request switch
• E11
• Electronic brake control module
• Exc m74 transmission
• F10
• From auxiliary battery relay (diagram 1 of 6)
• From ign a fuse (diagram 1 of 6)
• Front axle actuator
• Htr/ac fuse 30a
• Hvac 1 fuse 10a
• Hvac control module
• I/p fuse block (left side of dash)
• I/p junction block (behind right side of dash)
• Ign 0 fuse 10a
• Ign 3 fuse 10a
• Ignition switch
• Lock
• Mode actuator
• Off
• Pnk
• Power takeoff (pto) switch
• Powertrain control module
• Pto
• Recirculation actuator
• Red
• Run
• Start
• Stoplamp switch
• Tbc ign 0 fuse 10a
• Traction control switch
• Transfer case shift control switch
• Transmission control module (tcm)
• Turn signal multifunction switch
• Underhood fuse block (left side of engine compt)

6.0L VIN U, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN U, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A/c comp relay
• A/t
• Acc
• Airbag fuse 15a
• B/u lp fuse 20a
• Backup lamp switch
• Body control module
• C c8
• C1 b2
• C10
• C8 d
• Clutch pedal position switch (m/t)
• D c5
• D10 c1
• Defog relay
• E c3
• Exc 8.1l w/o california lev
• F11
• From ign 1 relay (diagram 3 of 6)
• From ign b fuse (diagram 1 of 6)
• Heated oxygen sensor bank 1 sensor 1
• Heated oxygen sensor bank 1 sensor 2
• Heated oxygen sensor bank 2 sensor 1
• Heated oxygen sensor bank 2 sensor 2
• I/p fuse block (behind left side of dash)
• I/p relay block (near left kick panel)
• Ign e fuse 10a
• Ignition switch
• Inflatable restraint i/p module disable switch
• Inflatable restraint passenger presence system module
• Inflatable restraint sensing & diagnostic module
• Inside rearview mirror
• Instrument panel cluster
• Lock
• M/t
• Mobile radio fuse block (upfitter option)
• Nca
• O2a fuse 15a
• O2b fuse 15a
• Off
• Park/neutral position switch (a/t)
• Pnk
• Red
• Relay a
• Relay b
• Rr wpr fuse 15a
• Run
• Selectable ride switch
• Seo accy fuse 10a
• Seo ign fuse 10a
• Start
• Tbc accy fuse 10a
• Tbc ign 1 fuse 10a
• Turn signal multifunction switch
• Turn signal/ multifunction switch
• W/o 8s8
• Windshield wiper motor module
• Ws wpr fuse 25a

6.6L VIN 2

6.6L VIN 2, Power Distribution Wiring Diagram (1 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN 2, Power Distribution Wiring Diagram (1 of 5) for GMC Sierra Classic HD 2007 2500:

• (18.5 cm from trailer conn breakout)
• (base) (exc base)
• (in console harness)
• (in engine harness)
• (in i/p harness)
• (in seo harness)
• (not used)
• (w/aux battery) battery (right)
• 125a
• 175a
• 40a
• 4ws fuse 15a
• A c1
• A c6
• A c7
• A12
• Abs fuse 60a
• Audio amplifier
• Auxiliary battery relay (right rear of engine compt)
• B c9
• B11 c1
• B12 c1
• B2 c3
• Battery (left)
• Battery (right)
• Battery cable junction block
• Body control module
• C7 b
• C9 d
• Cig ltr fuse 15a
• Cigar lighter
• D12 c1
• Data link connector
• Digital radio receiver
• E10
• Eap fuse 15a
• Electronic brake control module
• Emergency vehicle roof lamp relay
• Evaporative emission canister vent solenoid
• Except luxury
• F2 c1
• Fuse b 30a
• Fuse d 30a
• Fusible link 5 (10 ga-red)
• Fusible link 6 (10 ga-red)
• G104 (left rear of engine block)
• G200 (behind right side of dash, near "a" pillar)
• Generator (left)
• Generator (right)
• Glow plug control module (gpcm)
• Harness)
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Ign a fuse 40a
• Ign b fuse 40a
• Intake air heater (iah) module
• Intake air heater fuse
• Luxury
• Mega fuse
• Mobile radio fuse block (behind right side of dash)
• Radio
• Radio amp fuse 30a
• Radio fuse 15a
• Rear seat audio (rsa) controller
• Red
• Relay a
• Relay b
• Rr wpr fuse 25a
• Rtd fuse 30a
• S/roof fuse 25a
• S102
• S205 s303
• S220 (in seo red
• S221
• S222
• S416
• Starter
• Starter relay
• Stud 1 fuse 40a
• Stud 2 fuse 30a
• Sunroof control module
• Tbc batt fuse 10a
• To 4wd fuse (diagram 4 of 5)
• To ignition switch (diagram 4 of 5)
• To ignition switch (diagram 5 of 5)
• To ipc/dic fuse (diagram 2 of 5)
• Trailer connector (7 way)
• Underhood fuse block (left side of engine compt)
• Vses/ ecas fuse 60a
• W/ aux battery
• W/ dual batteries
• W/ wrecker emergency lamp
• Wrecker relay

6.6L VIN 2, Power Distribution Wiring Diagram (2 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN 2, Power Distribution Wiring Diagram (2 of 5) for GMC Sierra Classic HD 2007 2500:

• (6.4 cm from c202 breakout) s335
• (not used)
• 8s8
• A c10
• A10
• Auto a/c
• Aux pwr fuse 20a
• Auxiliary power outlet (bin)
• Auxiliary power outlet (console)
• Auxiliary power outlet (front)
• B c5
• B11
• B11 c1
• Blower motor control module
• Blower motor resistor assembly
• Blwr fuse 40a
• C1 c2
• C1 f12
• C10
• C3 b
• C4 d
• C4 e6
• C8 a
• D12
• Defog relay
• E c8
• E11 c1
• Ecm b fuse 20a
• Electronic brake control module
• Engine control module (ecm)
• Except luxury
• F/pmp relay
• From radio fuse (diagram 1 of 5)
• G200 (behind right side of dash, near "a" pillar)
• Garage door opener
• Hvac control module
• Hvac/ecas fuse 10a
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Info fuse 15a
• Instrument panel cluster
• Ipc/dic fuse 10a
• Lh hid fuse 20a
• Luxury
• Manual a/c
• Nca
• Overhead console
• Rear seat entertainment assembly
• Red
• Remote playback device (cd player)
• Rh hid fuse 20a
• Roof beacon relay
• Roof beacon switch
• Rr defog fuse 30a
• Rr hvac fuse 30a
• Seo b1 fuse 15a
• Seo b2 fuse 30a
• Stop lp fuse 25a
• Stoplamp switch
• Tcm b fuse 10a
• To ecm relay (diagram 3 of 5)
• To lbec 1 fuse (diagram 3 of 5)
• Transfer case encoder motor
• Transfer case shift control module
• Transmission control module (tcm)
• Trec fuse 30a
• Underhood fuse block (left side of engine compt)
• Vehicle communication interface module
• W/o 8s8

6.6L VIN 2, Power Distribution Wiring Diagram (3 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN 2, Power Distribution Wiring Diagram (3 of 5) for GMC Sierra Classic HD 2007 2500:

• (18 cm from engine control module conn breakout) s144
• (left side of engine compt) underhood fuse block
• (lower left
• (not used)
• (passenger seat harness)
• A c5
• A c6
• A/c comp fuse 10a
• A/c comp relay
• A10
• A12
• A7 c1
• Actuator fuse 15a
• Aux pwr 2 m/gate fuse 20a
• B c7
• B12
• B2 c2
• Body control module
• Bucket
• C c3
• C9 c1
• Ddm fuse 15a
• Driver door module
• Driver door unlock relay
• Drl fuse 10a
• Drl relay
• E c10
• E c7
• E10
• E11 c1
• E12
• Ecc/ tpm fuse 10a
• Ecm fuse 25a
• Ecm relay
• Engine control module
• Exc base
• F c3
• F11 c1
• Fog lp fuse 15a
• Fog lp relay
• From blwr fuse (diagram 2 of 5)
• From ecm b fuse (diagram 2 of 5)
• G c4
• G104 (left rear of engine block)
• Hazrd fuse 25a
• Hdlp-hi relay
• Hdlp-low relay
• Horn relay
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Lbec 1 fuse 50a
• Lbec 2 fuse 50a
• Lcks fuse 20a
• Lock relay
• Lt door circuit breaker 25a
• Lumbar bolster switch (front passenger)
• M c4
• Mbec 1 fuse 50a
• Memory seat module (driver)
• Non bucket
• Park lp relay
• Passenger door module
• Pdm fuse 10a
• Pnk
• Power take off relay
• Red
• Rt doors circuit breaker 25a
• S328
• Seat adjuster switch (driver)
• Seat adjuster switch (front passenger)
• Seats circuit breaker 30a
• Side of dash) left i/p fuse block
• Tbc 2a fuse 15a
• Tbc 2b fuse 15a
• Tbc 2c fuse 15a
• Tire pressure monitor (tpm) module
• Turn signal/ hazard flasher module
• Underhood fuse block (left side of engine compt)
• Unlock relay
• W/s wash fuse 15a
• W/s wash relay
• Window switch (left rear) (crew cab)
• Window switch (right rear)

6.6L VIN 2, Power Distribution Wiring Diagram (4 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN 2, Power Distribution Wiring Diagram (4 of 5) for GMC Sierra Classic HD 2007 2500:

• (man a/c)
• (not used)
• (over 8600 gvw) (8600 gvw or less)
• 4wd fuse 15a
• A/t shift lever
• Acc
• Air temperature actuator (left)
• Air temperature actuator (right)
• B10 a1
• Body control module
• Brk fuse 10a
• C1 c9
• C1 e8
• C2 c2
• Clutch start switch
• Crank fuse 10a
• Cruise
• Cruise control module
• Cruise control on/off switch
• Cruise fuse 10a
• Driver shift request switch
• E11
• Electronic brake control module
• Engine control module
• F10
• From auxiliary battery relay (diagram 1 of 5)
• From ign a fuse (diagram 1 of 5)
• Front axle actuator
• Glow plug control module (gpcm)
• Htr/ac fuse 30a
• Hvac 1 fuse 10a
• Hvac control module
• I/p fuse block (left side of dash)
• I/p junction block (behind right side of dash)
• Ign 0 fuse 10a
• Ign 3 fuse 10a
• Ignition switch
• Lock
• Mode actuator
• Off
• Pnk
• Power takeoff (pto) switch
• Pto
• Recirculation actuator
• Red
• Run
• Start
• Stoplamp switch
• Tbc ign 0 fuse 10a
• Traction control switch
• Transfer case shift control switch
• Transmission control module (tcm)
• Turn signal multifunction switch
• Underhood fuse block (left side of engine compt)

6.6L VIN 2, Power Distribution Wiring Diagram (5 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN 2, Power Distribution Wiring Diagram (5 of 5) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A/c comp relay
• A/t
• Acc
• Airbag fuse 15a
• B/u lp fuse 20a
• Backup lamp switch
• Body control module
• C c8
• C1 b2
• C10
• C8 d
• D c5
• D10 c1
• Defog relay
• E c3
• Ecm 1 fuse 15a
• Engine control module
• F11
• From ign b fuse (diagram 1 of 5)
• Fuel heater
• Fuel htr fuse 15a
• Glow plug control module (gpcm)
• I/p fuse block (behind left side of dash)
• I/p relay block (near left kick panel)
• Ign e fuse 10a
• Ignition switch
• Inflatable restraint passenger presence system module
• Inflatable restraint sensing & diagnostic module
• Inside rearview mirror
• Instrument panel cluster
• Lock
• M/t
• Mass air flow (maf)/ intake air temperature (iat) sensor
• Mobile radio fuse block (right sde of dash))
• O2a fuse 15a
• O2b fuse 15a
• Off
• Park/neutral position switch (a/t)
• Pnk
• Red
• Relay a
• Relay b
• Rr wpr fuse 15a
• Run
• Selectable ride switch
• Seo accy fuse 10a
• Seo ign fuse 10a
• Start
• Tbc accy fuse 10a
• Tbc ign 1 fuse 10a
• Turn signal multifunction switch
• Turn signal/ multifunction switch
• W/o 8s8
• Windshield wiper motor module
• Ws wpr fuse 25a

6.6L VIN D

6.6L VIN D, Power Distribution Wiring Diagram (1 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN D, Power Distribution Wiring Diagram (1 of 5) for GMC Sierra Classic HD 2007 2500:

• (18.5 cm from trailer conn breakout)
• (base) (exc base)
• (in console harness)
• (in engine harness)
• (in i/p harness)
• (in seo harness)
• (not used)
• (w/aux battery) battery (right)
• 125a
• 175a
• 40a
• 4ws fuse 15a
• A c1
• A c6
• A c7
• A12
• Abs fuse 60a
• Audio amplifier
• Auxiliary battery relay (right rear of engine compt)
• B c9
• B11 c1
• B12 c1
• B2 c3
• Battery (left)
• Battery (right)
• Battery cable junction block
• Body control module
• C7 b
• C9 d
• Cig ltr fuse 15a
• Cigar lighter
• D12 c1
• Data link connector
• Digital radio receiver
• E10
• Eap fuse 15a
• Electronic brake control module
• Emergency vehicle roof lamp relay
• Evaporative emission canister vent solenoid
• Except luxury
• F2 c1
• Fuse b 30a
• Fuse d 30a
• Fusible link 5 (10 ga-red)
• Fusible link 6 (10 ga-red)
• G104 (left rear of engine block)
• G200 (behind right side of dash, near "a" pillar)
• Generator (left)
• Generator (right)
• Glow plug control module (gpcm)
• Harness)
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Ign a fuse 40a
• Ign b fuse 40a
• Intake air heater (iah) module
• Intake air heater fuse
• Luxury
• Mega fuse
• Mobile radio fuse block (behind right side of dash)
• Radio
• Radio amp fuse 30a
• Radio fuse 15a
• Rear seat audio (rsa) controller
• Red
• Relay a
• Relay b
• Rr wpr fuse 25a
• Rtd fuse 30a
• S/roof fuse 25a
• S102
• S205 s303
• S220 (in seo red
• S221
• S222
• S416
• Starter
• Starter relay
• Stud 1 fuse 40a
• Stud 2 fuse 30a
• Sunroof control module
• Tbc batt fuse 10a
• To 4wd fuse (diagram 4 of 5)
• To ignition switch (diagram 4 of 5)
• To ignition switch (diagram 5 of 5)
• To ipc/dic fuse (diagram 2 of 5)
• Trailer connector (7 way)
• Underhood fuse block (left side of engine compt)
• Vses/ ecas fuse 60a
• W/ aux battery
• W/ dual batteries
• W/ wrecker emergency lamp
• Wrecker relay

6.6L VIN D, Power Distribution Wiring Diagram (2 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN D, Power Distribution Wiring Diagram (2 of 5) for GMC Sierra Classic HD 2007 2500:

• (6.4 cm from c202 breakout) s335
• (not used)
• 8s8
• A c10
• A10
• Auto a/c
• Aux pwr fuse 20a
• Auxiliary power outlet (bin)
• Auxiliary power outlet (console)
• Auxiliary power outlet (front)
• B c5
• B11
• B11 c1
• Blower motor control module
• Blower motor resistor assembly
• Blwr fuse 40a
• C1 c2
• C1 f12
• C10
• C3 b
• C4 d
• C4 e6
• C8 a
• D12
• Defog relay
• E c8
• E11 c1
• Ecm b fuse 20a
• Electronic brake control module
• Engine control module (ecm)
• Except luxury
• F/pmp relay
• From radio fuse (diagram 1 of 5)
• G200 (behind right side of dash, near "a" pillar)
• Garage door opener
• Hvac control module
• Hvac/ecas fuse 10a
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Info fuse 15a
• Instrument panel cluster
• Ipc/dic fuse 10a
• Lh hid fuse 20a
• Luxury
• Manual a/c
• Nca
• Overhead console
• Rear seat entertainment assembly
• Red
• Remote playback device (cd player)
• Rh hid fuse 20a
• Roof beacon relay
• Roof beacon switch
• Rr defog fuse 30a
• Rr hvac fuse 30a
• Seo b1 fuse 15a
• Seo b2 fuse 30a
• Stop lp fuse 25a
• Stoplamp switch
• Tcm b fuse 10a
• To ecm relay (diagram 3 of 5)
• To lbec 1 fuse (diagram 3 of 5)
• Transfer case encoder motor
• Transfer case shift control module
• Transmission control module (tcm)
• Trec fuse 30a
• Underhood fuse block (left side of engine compt)
• Vehicle communication interface module
• W/o 8s8

6.6L VIN D, Power Distribution Wiring Diagram (3 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN D, Power Distribution Wiring Diagram (3 of 5) for GMC Sierra Classic HD 2007 2500:

• (18 cm from engine control module conn breakout) s144
• (left side of engine compt) underhood fuse block
• (lower left
• (not used)
• (passenger seat harness)
• A c5
• A c6
• A/c comp fuse 10a
• A/c comp relay
• A10
• A12
• A7 c1
• Actuator fuse 15a
• Aux pwr 2 m/gate fuse 20a
• B c7
• B12
• B2 c2
• Body control module
• Bucket
• C c3
• C9 c1
• Ddm fuse 15a
• Driver door module
• Driver door unlock relay
• Drl fuse 10a
• Drl relay
• E c10
• E c7
• E10
• E11 c1
• E12
• Ecc/ tpm fuse 10a
• Ecm fuse 25a
• Ecm relay
• Engine control module
• Exc base
• F c3
• F11 c1
• Fog lp fuse 15a
• Fog lp relay
• From blwr fuse (diagram 2 of 5)
• From ecm b fuse (diagram 2 of 5)
• G c4
• G104 (left rear of engine block)
• Hazrd fuse 25a
• Hdlp-hi relay
• Hdlp-low relay
• Horn relay
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Lbec 1 fuse 50a
• Lbec 2 fuse 50a
• Lcks fuse 20a
• Lock relay
• Lt door circuit breaker 25a
• Lumbar bolster switch (front passenger)
• M c4
• Mbec 1 fuse 50a
• Memory seat module (driver)
• Non bucket
• Park lp relay
• Passenger door module
• Pdm fuse 10a
• Pnk
• Power take off relay
• Red
• Rt doors circuit breaker 25a
• S328
• Seat adjuster switch (driver)
• Seat adjuster switch (front passenger)
• Seats circuit breaker 30a
• Side of dash) left i/p fuse block
• Tbc 2a fuse 15a
• Tbc 2b fuse 15a
• Tbc 2c fuse 15a
• Tire pressure monitor (tpm) module
• Turn signal/ hazard flasher module
• Underhood fuse block (left side of engine compt)
• Unlock relay
• W/s wash fuse 15a
• W/s wash relay
• Window switch (left rear) (crew cab)
• Window switch (right rear)

6.6L VIN D, Power Distribution Wiring Diagram (4 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN D, Power Distribution Wiring Diagram (4 of 5) for GMC Sierra Classic HD 2007 2500:

• (man a/c)
• (not used)
• (over 8600 gvw) (8600 gvw or less)
• 4wd fuse 15a
• A/t shift lever
• Acc
• Air temperature actuator (left)
• Air temperature actuator (right)
• B10 a1
• Body control module
• Brk fuse 10a
• C1 c9
• C1 e8
• C2 c2
• Clutch start switch
• Crank fuse 10a
• Cruise
• Cruise control module
• Cruise control on/off switch
• Cruise fuse 10a
• Driver shift request switch
• E11
• Electronic brake control module
• Engine control module
• F10
• From auxiliary battery relay (diagram 1 of 5)
• From ign a fuse (diagram 1 of 5)
• Front axle actuator
• Glow plug control module (gpcm)
• Htr/ac fuse 30a
• Hvac 1 fuse 10a
• Hvac control module
• I/p fuse block (left side of dash)
• I/p junction block (behind right side of dash)
• Ign 0 fuse 10a
• Ign 3 fuse 10a
• Ignition switch
• Lock
• Mode actuator
• Off
• Pnk
• Power takeoff (pto) switch
• Pto
• Recirculation actuator
• Red
• Run
• Start
• Stoplamp switch
• Tbc ign 0 fuse 10a
• Traction control switch
• Transfer case shift control switch
• Transmission control module (tcm)
• Turn signal multifunction switch
• Underhood fuse block (left side of engine compt)

6.6L VIN D, Power Distribution Wiring Diagram (5 of 5) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN D, Power Distribution Wiring Diagram (5 of 5) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A/c comp relay
• A/t
• Acc
• Airbag fuse 15a
• B/u lp fuse 20a
• Backup lamp switch
• Body control module
• C c8
• C1 b2
• C10
• C8 d
• D c5
• D10 c1
• Defog relay
• E c3
• Ecm 1 fuse 15a
• Engine control module
• F11
• From ign b fuse (diagram 1 of 5)
• Fuel heater
• Fuel htr fuse 15a
• Glow plug control module (gpcm)
• I/p fuse block (behind left side of dash)
• I/p relay block (near left kick panel)
• Ign e fuse 10a
• Ignition switch
• Inflatable restraint passenger presence system module
• Inflatable restraint sensing & diagnostic module
• Inside rearview mirror
• Instrument panel cluster
• Lock
• M/t
• Mass air flow (maf)/ intake air temperature (iat) sensor
• Mobile radio fuse block (right sde of dash))
• O2a fuse 15a
• O2b fuse 15a
• Off
• Park/neutral position switch (a/t)
• Pnk
• Red
• Relay a
• Relay b
• Rr wpr fuse 15a
• Run
• Selectable ride switch
• Seo accy fuse 10a
• Seo ign fuse 10a
• Start
• Tbc accy fuse 10a
• Tbc ign 1 fuse 10a
• Turn signal multifunction switch
• Turn signal/ multifunction switch
• W/o 8s8
• Windshield wiper motor module
• Ws wpr fuse 25a

8.1L VIN G

8.1L VIN G, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 8.1L VIN G, Power Distribution Wiring Diagram (1 of 6) for GMC Sierra Classic HD 2007 2500:

• (18.5 cm from trailer conn breakout)
• (base) (exc base)
• (in console harness)
• (in i/p harness)
• (in seo harness)
• (not used)
• (w/aux battery) battery (right)
• 4.3l, 8.1l
• 4.8l, 5.3l & 6.0l
• 40a
• 4ws fuse 15a
• A c1
• A c6
• A c7
• A12
• Abs fuse 60a
• Audio amplifier
• Auxiliary battery relay (right rear of engine compt)
• B c9
• B11 c1
• B12 c1
• B2 c3
• Battery (left)
• Battery (right)
• Battery cable junction block
• Body control module
• C7 b
• C9 d
• Cig ltr fuse 15a
• Cigar lighter
• Cool/ fan fuse 10a
• Cool/ fan fuse 40a
• Cool/fan relay 1
• Cool/fan relay 2
• Cool/fan relay 3
• D12 c1
• Data link connector
• Digital radio receiver
• E10
• Eap fuse 15a
• Electronic brake control module
• Emergency vehicle roof lamp relay
• Evaporative emission canister vent solenoid
• Except 4.3l
• Except luxury
• F2 c1
• Fuse b 30a
• Fuse d 30a
• Fusible link 5 (10 ga- red)
• Fusible link 6 (10 ga- red)
• G104 (left rear of engine block)
• G200 (behind right side of dash, near "a" pillar)
• Generator (4.3l & 8.1l)
• Generator (4.8l, 5.3l & 6.0l)
• Harness)
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• I/p relay block (near left kick panel)
• Ign a fuse 40a
• Ign b fuse 40a
• Luxury
• Mega fuse
• Mobile radio fuse block (right side of dash)
• Nca
• Radio
• Radio amp fuse 30a
• Radio fuse 15a
• Rear seat audio (rsa) controller
• Red
• Relay a
• Relay b
• Rr wpr fuse 25a
• Rtd fuse 30a
• S/roof fuse 25a
• S102 (in engine harness)
• S205 s303
• S220 (in seo red
• S221
• S222
• S416
• Starter
• Starter relay
• Stud 1 fuse 40a
• Stud 2 fuse 30a
• Sunroof control module
• Tbc batt fuse 10a
• To 4wd fuse (diagram 5 of 6)
• To ignition switch (diagram 5 of 6)
• To ignition switch (diagram 6 of 6)
• To ipc/dic fuse (diagram 2 of 6)
• Trailer connector (7 way)
• Underhood cooling fan fuse block (left side of eng compt)
• Underhood fuse block (left side of engine compt)
• Vses/ ecas fuse 60a
• W/ aux battery
• W/ dual batteries
• W/ wrecker emergency lamp
• Wrecker relay

8.1L VIN G, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 8.1L VIN G, Power Distribution Wiring Diagram (2 of 6) for GMC Sierra Classic HD 2007 2500:

• (6.4 cm from c202 breakout) s335
• (in console harness)
• (in i/p harness)
• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A c10
• A10
• Auto a/c
• Aux pwr fuse 20a
• Auxiliary power outlet (bin)
• Auxiliary power outlet (console)
• Auxiliary power outlet (front)
• B c5
• B11
• B11 c1
• Blower motor control module
• Blower motor resistor assembly
• Blwr fuse 40a
• C1 c2
• C1 f12
• C10
• C3 b
• C4 d
• C4 e6
• C8 a
• D12
• Defog relay
• E c8
• E11 c1
• Electronic brake control module
• Except luxury
• F/pmp relay
• From radio fuse (diagram 1 of 6)
• G200 (behind right side of dash, near "a" pillar)
• Garage door opener
• Generator battery control module (10 series)
• Hvac control module
• Hvac/ecas fuse 10a
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Info fuse 15a
• Instrument panel cluster
• Ipc/dic fuse 10a
• Lh hid fuse 20a
• Luxury
• Manual a/c
• Nca
• Overhead console
• Pcm b fuse 20a
• Powertrain control module
• Rear seat entertainment assembly
• Red
• Remote playback device (cd player)
• Rh hid fuse 20a
• Roof beacon relay
• Roof beacon switch
• Rr defog fuse 30a
• Rr hvac fuse 30a
• Rvc fuse 10a
• Seo b1 fuse 15a
• Seo b2 fuse 30a
• Stop lp fuse 25a
• Stoplamp switch
• Tcmb fuse 10a
• To lbec 1 fuse (diagram 3 of 6)
• Transfer case encoder motor
• Transfer case shift control module
• Transmission control module (tcm)
• Trec fuse 30a
• Vehicle communication interface module
• W/o 8s8

8.1L VIN G, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 8.1L VIN G, Power Distribution Wiring Diagram (3 of 6) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (lower left side of dash)
• (not used)
• (passenger seat harness)
• A c5
• A c6
• A/c comp fuse 10a
• A/c comp relay
• A10
• A12
• A7 c1
• Aux pwr 2 m/gate fuse 20a
• B c7
• B10
• B12
• B2 c2
• B7 c2
• Body control module
• Bucket
• C c3
• C9 c1
• Ddm fuse 15a
• Driver door module
• Driver door unlock relay
• Drl fuse 10a
• Drl relay
• E c10
• E c7
• E10
• E11 c1
• E12
• E3 c3
• Ecc/ tpm fuse 10a
• Etc/ecm fuse 15a
• Evaporative emissions (evap) canister purge solenoid
• Exc base
• F c3
• F11 c1
• Fog lp fuse 15a
• Fog lp relay
• From mbec 1 fuse (diagram 3 of 6)
• From pcm b fuse (diagram 2 of 6)
• Fuel composition sensor
• Fuel pump relay (secondary) (w/ dual tanks)
• G c4
• G104 (left rear of engine block)
• Harness)
• Hazrd fuse 25a
• Hdlp-hi relay
• Hdlp-low relay
• Horn relay
• I/p junction block (right side of dash)
• I/p relay block (near left kick panel)
• Ign 1 relay
• Intake air temperature (iat)/mass airflow (maf) sensor assembly
• Lbec 1 fuse 50a
• Lbec 2 fuse 50a
• Left i/p fuse block
• Lock relay
• Locks fuse 20a
• Lt door circuit breaker 25a
• Lumbar bolster switch (front passenger)
• M c4
• Mbec 1 fuse 50a
• Memory seat module (driver)
• Non bucket
• Park lp relay
• Passenger door module
• Pcm 1 fuse 15a
• Pdm fuse 10a
• Pnk
• Power take off relay
• Powertrain control module
• Red
• Rt doors circuit breaker 25a
• S328
• Sba fuse 15a
• Seat adjuster switch (driver)
• Seat adjuster switch (front passenger)
• Seats circuit breaker 30a
• Tbc 2a fuse 15a
• Tbc 2b fuse 15a
• Tbc 2c fuse 15a
• Throttle actuator control module (except 4.3l)
• Tire pressure monitor (tpm) module
• To ign 1 relay (diagram 3 of 6)
• To inj 1 fuse (diagram 4 of 6)
• To seo ign fuse (diagram 6 of 6)
• Turn signal/ hazard flasher module
• Underhood fuse block (left side of engine compt)
• Unlock relay
• W/s wash fuse 15a
• W/s wash relay
• Window switch (left rear) (crew cab)
• Window switch (right rear)

8.1L VIN G, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 8.1L VIN G, Power Distribution Wiring Diagram (4 of 6) for GMC Sierra Classic HD 2007 2500:

• (4.3l)
• (4.8l, 5.3, 6.0l)
• (4.8l, 5.3l, 6.0l)
• (in injector jumper harn)
• (not used)
• 4.3l
• 4.3l, 4.8l, 5.3l, 6.0l
• 4.8l, 5.3l, 6.0l, 8.1l
• 8.1l
• C10
• D10
• E10
• Except 4.3l
• From pcm 1 fuse (diagram 3 of 6)
• Fuel injector 1
• Fuel injector 2
• Fuel injector 3
• Fuel injector 4
• Fuel injector 5
• Fuel injector 6
• Fuel injector 7
• Fuel injector 8
• Ignition coil
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Ignition coil 7
• Ignition coil 8
• Ignition control module
• Inj 1 fuse 15a
• Inj 2 fuse 15a
• Pnk
• Pnk a
• S152 (in injector jumper harness)
• S154
• S159 (in engine harness)
• S160 (in ignition coil jumper harness)
• Underhood fuse block (left side of engine compt)

8.1L VIN G, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 8.1L VIN G, Power Distribution Wiring Diagram (5 of 6) for GMC Sierra Classic HD 2007 2500:

• (man a/c)
• (not used)
• (over 8600 gvw) (8600 gvw or less)
• 4wd fuse 15a
• A/t shift lever
• Acc
• Air temperature actuator (left)
• Air temperature actuator (right)
• Automatic transmission
• B10 a1
• Body control module
• Brake fuse 10a
• C1 c9
• C1 e8
• C175
• C2 c2
• Clutch start switch
• Crank fuse 10a
• Cruise
• Cruise control module
• Cruise control on/off switch
• Cruise fuse 10a
• Driver shift request switch
• E11
• Electronic brake control module
• Exc m74 transmission
• F10
• From auxiliary battery relay (diagram 1 of 6)
• From ign a fuse (diagram 1 of 6)
• Front axle actuator
• Htr/ac fuse 30a
• Hvac 1 fuse 10a
• Hvac control module
• I/p fuse block (left side of dash)
• I/p junction block (behind right side of dash)
• Ign 0 fuse 10a
• Ign 3 fuse 10a
• Ignition switch
• Lock
• Mode actuator
• Off
• Pnk
• Power takeoff (pto) switch
• Powertrain control module
• Pto
• Recirculation actuator
• Red
• Run
• Start
• Stoplamp switch
• Tbc ign 0 fuse 10a
• Traction control switch
• Transfer case shift control switch
• Transmission control module (tcm)
• Turn signal multifunction switch
• Underhood fuse block (left side of engine compt)

8.1L VIN G, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500

List of elements for 8.1L VIN G, Power Distribution Wiring Diagram (6 of 6) for GMC Sierra Classic HD 2007 2500:

• (left side of engine compt) underhood fuse block
• (not used)
• 8s8
• A/c comp relay
• A/t
• Acc
• Airbag fuse 15a
• B/u lp fuse 20a
• Backup lamp switch
• Body control module
• C c8
• C1 b2
• C10
• C8 d
• Clutch pedal position switch (m/t)
• D c5
• D10 c1
• Defog relay
• E c3
• Exc 8.1l w/o california lev
• F11
• From ign 1 relay (diagram 3 of 6)
• From ign b fuse (diagram 1 of 6)
• Heated oxygen sensor bank 1 sensor 1
• Heated oxygen sensor bank 1 sensor 2
• Heated oxygen sensor bank 2 sensor 1
• Heated oxygen sensor bank 2 sensor 2
• I/p fuse block (behind left side of dash)
• I/p relay block (near left kick panel)
• Ign e fuse 10a
• Ignition switch
• Inflatable restraint i/p module disable switch
• Inflatable restraint passenger presence system module
• Inflatable restraint sensing & diagnostic module
• Inside rearview mirror
• Instrument panel cluster
• Lock
• M/t
• Mobile radio fuse block (upfitter option)
• Nca
• O2a fuse 15a
• O2b fuse 15a
• Off
• Park/neutral position switch (a/t)
• Pnk
• Red
• Relay a
• Relay b
• Rr wpr fuse 15a
• Run
• Selectable ride switch
• Seo accy fuse 10a
• Seo ign fuse 10a
• Start
• Tbc accy fuse 10a
• Tbc ign 1 fuse 10a
• Turn signal multifunction switch
• Turn signal/ multifunction switch
• W/o 8s8
• Windshield wiper motor module
• Ws wpr fuse 25a

POWER DOOR LOCKS

Power Door Locks Wiring Diagram, Base for GMC Sierra Classic HD 2007 2500

List of elements for Power Door Locks Wiring Diagram, Base for GMC Sierra Classic HD 2007 2500:

• A12
• B10
• B11
• B12
• Battery
• Body control module (bcm) (on lower left side of dash, near steering column)
• C1 b3
• C1 c5
• C1 d10
• C3 m
• D11
• D12
• Door lock ctrl
• Door lock sw in
• Door unlock ctrl
• Door unlock sw in
• Driver door latch assembly
• Driver door lock switch
• Driver door unlock
• Driver unlock relay
• Front passenger door latch assembly
• Front passenger door lock switch
• G200 (behind right side of dash)
• G203 (behind left side of dash, near left "a" pillar)
• Ground
• Hot at all times
• I/p fuse block (lower left side of dash)
• I/p junction block (right side of dash, behind access panel)
• I/p relay block (near left kick panel)
• Ignition key alarm switch (on steering column)
• Ignition key switch
• Instrument panel cluster
• Left rear door latch assembly
• Lock
• Lock actuator
• Lock relay
• Locks fuse 20a
• Right rear door latch assembly
• S202
• S217
• Serial data
• Splice pack sp205 (in i/p harn)
• Tan
• Tbc batt fuse 10a
• Underhood fuse block (on left side of engine compt)
• Unlk
• Unlock relay

Power Door Locks Wiring Diagram, Up Level (1 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for Power Door Locks Wiring Diagram, Up Level (1 of 2) for GMC Sierra Classic HD 2007 2500:

• A c1
• A12
• B12
• Battery
• Body control module (on lower left side of dash, near steering column)
• C1 a7
• C1 b
• C1 c5
• C1 c9
• C3 a
• D12 c1
• Ddm fuse 15a
• Door lock switch
• Driver door latch assembly (rear of driver's door)
• Driver door module (inside driver door)
• E c7
• Front passenger door latch assembly (rear of front passenger's door)
• Front passenger door module (inside right front passenger door)
• G203 (near left kick panel)
• Ground
• Hot at all times
• I/p fuse block (lower left side of dash)
• I/p junction block (right side of dash, behind access panel)
• I/p relay block (near left kick panel)
• Ign key sw
• Ignition key alarm switch (on steering column)
• J c3
• Key sw
• Key sw sig
• Key switch
• Lock
• Lock actuator
• Lock ctrl
• Lt door c.b. 25a
• Pdm fuse 10a
• Rt door c.b. 25a
• S217
• Serial data
• Tan
• Tbc batt fuse 10a
• Underhood fuse block (on left side of engine compt)
• Unlock
• Unlock ctrl

Power Door Locks Wiring Diagram, Up Level (2 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for Power Door Locks Wiring Diagram, Up Level (2 of 2) for GMC Sierra Classic HD 2007 2500:

• (not used)
• A c4
• A2 c1
• A3 c1
• C7 b
• D c3
• F c2
• F c4
• G200 (behind right side of dash)
• Hot at all times
• I/p fuse block (lower left side of dash)
• I/p junction block (right side of dash, behind access panel)
• Instrument panel cluster
• L c4
• Left rear door latch assembly
• Lock actuator
• Lock relay
• Locks fuse 20a
• Right rear door latch assembly
• S202
• Splice pack sp205 (in i/p harn)
• Tan
• Unlock relay

POWER MIRRORS

Electrochromic Mirror Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Electrochromic Mirror Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• Air temp sensor
• Airbag fuse 15a
• Ambient air temperature sensor (in right front bumper filler assembly)
• Ambient photo sensor
• B12
• Back up lamp voltage output c5
• Back up voltage
• Body control module (bcm) (on lower left side of dash, below steering column)
• Body relay block
• Compass
• Computer data lines system
• Driver door module (ddm) (in driver's door)
• Driver outside rearview mirror
• Electro- chromic
• Electrochromic mirror
• Except 10 series/ crew cab
• Exterior lights system
• G200 (near right "a" pillar)
• Ground
• Hot in run & start
• Ign 3
• Inside rearview mirror
• Left i/p fuse block (lower left side of dash)
• Logic
• Low ref
• Mir signal
• On/off
• Pnk
• Rr light photo sensor
• S345
• Selector switch
• Serial data
• Temp
• Underhood fuse block (left side of engine compt)

Power Mirrors Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Power Mirrors Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• 5 volt ref
• B11
• Battery
• Class 2 serial data
• Computer data lines system
• Ddm fuse 15a
• Down
• Driver door module (in driver's door)
• Driver mirror
• Electro- chromic
• Folding/ telescoping motor
• Front passenger door module (in right front door)
• Fuse block- i/p (lower left side of dash)
• G200 (near right "a" pillar)
• Ground
• Heating element
• Horizontal
• Hot at all times
• Hvac control module (in center of dash)
• I/p fuse block (lower left side of dash)
• I/p relay block (near left kick panel)
• Junction block - i/p (right side of dash)
• Left
• Low ref
• Lt doors circuit breaker 25a
• Mir htr low ref
• Mir htr sply voltage
• Mir mtr dwn ctrl
• Mir mtr extend ctrl
• Mir mtr retract ctrl
• Mir mtr rt ctrl
• Mir position sens sig
• Mir sens low ref
• Mir signal
• Mtr position sens sig
• Out
• Outside rearview mirror (driver)
• Outside rearview mirror (front passenger)
• Pass- enger mirror
• Pdm fuse 10a
• Pnk
• Red
• Right
• Right i/p fuse block (lower right side of dash)
• Rt door circuit breaker 25a
• Rt/dwn mtr common
• S202
• Switch power
• Tan
• Vert posit sens sig
• Vertical

POWER SEATS

Driver Seat Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Driver Seat Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• Back
• C10
• Crew cab
• Driver seat adjuster switch
• Driver seat front vertical motor
• Driver seat horizontal motor
• Driver seat rear vertical motor
• Except crew cab
• Front dn
• Front up
• Fwd
• G305 (on left "b" pillar)
• G306 (on right "b" pillar)
• Hot at all times
• I/p relay block
• Rear dn
• Rear up
• Red
• Seats circuit breaker 30a
• Tan

Heated Seats Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Heated Seats Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (in driver seat harness)
• (in driver's seat harness) s311
• (not used)
• Back & cushion select
• Back only ind
• Back only indicator
• Back only select
• Batt
• Batt (+)
• Bck & csh select
• C1 a7
• C1 c9
• C1 f6
• C10 h
• C2 f
• C3 c
• C3 d
• C3 f
• C4 a
• C7 c
• C7 e
• Computer data lines system
• Ddm fuse 15a
• Driver back heated seat element
• Driver cushion heated seat element
• Driver door module
• Element control
• Front passenger back heated seat element
• Front passenger cushion heated seat element
• Front passenger door module
• G200 (behind right side of dash, near right "a" pillar)
• G305 (crew cab) (on left "b" pillar)
• G306 (except crew cab) (on right "b" pillar)
• Gnd
• Ground
• Hi heat ind
• Hi heat indicator
• Hot at all times
• I/p fuse block (lower left side of dash)
• I/p junction block (right side of dash)
• I/p relay block
• Low heat ind
• Low heat indicator
• Low ref
• Lt doors circuit breaker 25a
• Med heat ind
• Med heat indicator
• Memory seat module (underside of left front seat)
• Memory/heated seat switch
• Pdm fuse 10a
• Pnk
• Rt doors circuit breaker 30a
• S202
• S314
• Seats circuit breaker 30a
• Serial data
• Switch power
• Tan
• Temp signal

Passenger Power Seat Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Passenger Power Seat Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• Back
• C10
• Fr dn
• Fr up
• Front passenger seat adjuster switch
• Front passenger seat front vertical motor
• Front passenger seat horizontal motor
• Front passenger seat rear recliner motor
• Front passenger seat rear vertical motor
• Fwd
• G306 (on right "b" pillar)
• Hot at all times
• I/p relay block
• Red
• Rr dn
• Rr up
• S328
• S329
• Seats circuit breaker 30a
• Tan

Passenger"s Lumbar Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Passenger"s Lumbar Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• C10 e
• Front passenger lumbar/ bolster switch
• Front passenger seat bolster m0tor
• Front passenger seat lumbar m0tor
• G306 (on right "b" pillar)
• Hot at all times
• I/p relay block
• Out
• Pnk
• S328
• S329
• Seats circuit breaker 30a

POWER TOP/SUNROOF

Power Top/Sunroof Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Power Top/Sunroof Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (not used)
• B11
• Body control module (on lower left side of dash, below steering column)
• Close
• G200 (near right "a" pillar)
• Grd
• Hall eff sensor 1
• Hall eff sensor 2
• Harness)
• Hot at all times
• I/p junction block (right side of dash, behind access panel)
• Low ref
• Manu code
• Open
• S352
• Sunroof control module
• Sunroof fuse 25a
• Sunroof motor
• Sunroof mtr close
• Sunroof mtr open
• Sunroof sw close
• Sunroof sw open
• Sunroof switch
• Tan
• Underhood fuse block (at left side of engine compartment)

POWER WINDOWS

Power Windows Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Power Windows Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (crew cab)
• Access panel)
• B+ volt
• B12
• Bcm class 2 serial data
• Body control module (lower left side of dash, below steering column)
• C1 e5
• C10
• C3 j
• C7 e
• Class 2 serial data
• Driver door module
• Driver window
• Driver window motor
• Front passenger door module
• Front passenger window motor
• G305 (on left "b" pillar)
• G306 (on right "b" pillar)
• Ground
• Hot at all times
• I/p fuse block (lower left side of dash)
• I/p junction block (right side of dash, behind
• I/p relay block (near left kick panel)
• Illumination
• Interior lights system
• Left rear window
• Left rear window motor
• Left rear window switch (crew cab only)
• Logic
• Lr window (crew cab)
• Lt doors circuit breaker 25a
• Pwr wnd lockout lr sig
• Pwr wnd lockout lr signal
• Pwr wnd lockout rr sig
• Pwr wnd lockout rr signal
• Pwr wnd motor lf down ctrl
• Pwr wnd motor lf up ctrl
• Pwr wnd motor lr rear down ctrl
• Pwr wnd motor lr rear up ctrl
• Pwr wnd motor rf down ctrl
• Pwr wnd motor rf up ctrl
• Pwr wnd motor rr rear down ctrl
• Pwr wnd motor rr rear up ctrl
• Pwr wnd sw lr down sig
• Pwr wnd sw lr up sig
• Pwr wnd sw rr down sig
• Pwr wnd sw rr up sig
• Pwr wnd switch lr down signal
• Pwr wnd switch lr up signal
• Pwr wnd switch rr down signal
• Pwr wnd switch rr up signal
• Right rear window
• Right rear window motor
• Right rear window switch (crew cab only)
• Rr window (crew cab)
• Rt doors circuit breaker 25a
• Splice pack sp205 (in i/p m harness)
• Switch power
• Tan
• Window down
• Window lockout indicator down
• Window lockout switch
• Window passenger
• Window switch passenger
• Window up

RADIO

Base Radio Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Base Radio Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• A10
• A11
• A12
• Antenna
• Aud out -
• B10
• B11
• B12
• Bare
• Cell voice sig
• Coax
• Common aud sig
• Computer data lines system
• Digital radio antenna
• Digital radio receiver (if equipped) (behind right side of instrument panel)
• Drain wire
• G203 (near left "a" pillar)
• Ground
• Hot at all times
• I/p fuse block (on lower left side l of dash)
• I/p junction block (right side of dash, behind access panel)
• I/p relay block (near left kick panel)
• Left aud sig
• Left front door speaker
• Left front tweeter speaker
• Left rear door speaker (except standard cab) left rear speaker (standard cab)
• Lf aud +
• Lf spk out+
• Lf spk out-
• Lr spk out +
• Lr spk out -
• Radio
• Radio fuse 15a
• Rf spk out +
• Rf spk out -
• Right aud sig
• Right front door speaker
• Right front tweeter speaker
• Right rear door speaker (except standard cab) right rear speaker (standard cab)
• Rr spk out+
• Rr spk out-
• Rt aud +
• Serial data
• Tan
• Underhood fuse block (at left side of engine compartment)
• Vehicle communication interface module (behind passenger air bag module)
• Voice low ref
• Voice signal

Mid-Line Radio Wiring Diagram, with Rear Seat Audio (1 of 4) for GMC Sierra Classic HD 2007 2500

List of elements for Mid-Line Radio Wiring Diagram, with Rear Seat Audio (1 of 4) for GMC Sierra Classic HD 2007 2500:

• A10
• A11
• A12
• Antenna
• B10
• B11
• B12
• B31
• Bare
• Bcm class 2 serial data
• Body control module (below steering column)
• C201
• C277
• Cell voice sig
• Coax
• Common aud sig
• Computer data lines system
• Drain wire
• Enable sig
• G203 (near left "a" pillar)
• Ground
• I/p relay block (near left kick panel)
• Inflatable restraint steering wheel module coil
• Instrument cluster system
• Left aud sig
• Lf spk out+
• Lf spk out-
• Lr aud sig+
• Lr aud sig-
• Lr spk out +
• Lr spk out -
• Pnk
• Prog
• Radio
• Radio mute
• Radio on sig
• Rear seat audio controller
• Remote radio control signal
• Rf spk out +
• Rf spk out -
• Right aud sig
• Rr aud sig+
• Rr aud sig-
• S320
• Seek dn
• Seek up
• Serial data
• Source dn
• Source up
• Tan
• Upper left steering wheel control switch assembly
• Upper right steering wheel control switch assembly
• Vehicle communication interface module (behind passenger air bag module)
• Voice
• Voice low ref
• Voice signal
• Vol dn
• Vol up
• Vss signal

Mid-Line Radio Wiring Diagram, with Rear Seat Audio (2 of 4) for GMC Sierra Classic HD 2007 2500

List of elements for Mid-Line Radio Wiring Diagram, with Rear Seat Audio (2 of 4) for GMC Sierra Classic HD 2007 2500:

• A10
• A11
• A12
• Audio amplifier
• B10
• B11
• B12
• Bare
• Drain wire
• Ground
• Hot at all times
• I/p fuse block (on lower left side of dash)
• I/p junction 2a block (right side of dash, behind a access panel)
• I/p relay block (near left kick panel)
• L spk out+
• L spk out-
• Left front door speaker
• Left front tweeter speaker
• Left rear door speaker
• Lf aud sig+
• Lf aud sig-
• Lf spkr out+
• Lf spkr out-
• Lr aud sig+
• Lr aud sig-
• Lr spkr out+
• Lr spkr out-
• Pnk
• R spk out+
• R spk out-
• Radio amp fuse 30a
• Radio fuse 15a
• Radio mute
• Radio on sig
• Rf aud sig+
• Rf aud sig-
• Rf spkr out+
• Rf spkr out-
• Right front door speaker
• Right front tweeter speaker
• Right rear door speaker
• Rr aud sig+
• Rr aud sig-
• Rr spkr out+
• Rr spkr out-
• Rsa enable
• Subwoofer speaker
• Tan
• Underhood fuse block (at left side of engine compartment)

Mid-Line Radio Wiring Diagram, with Rear Seat Audio (3 of 4) for GMC Sierra Classic HD 2007 2500

List of elements for Mid-Line Radio Wiring Diagram, with Rear Seat Audio (3 of 4) for GMC Sierra Classic HD 2007 2500:

• (not used)
• B11
• Bare
• G203 (near left "a" pillar)
• Hot at all times
• I/p relay block (near left kick panel)
• Info fuse 15a
• Splice pack sp250 (near hvac control module)
• Underhood fuse block (at left side of engine compartment)
• W/ rear seat entertainment assembly & digital radio receiver
• W/ rear seat entertainment assembly w/o digital radio receiver
• W/o rear seat entertainment assembly w/ digital radio receiver

Mid-Line Radio Wiring Diagram, with Rear Seat Audio (4 of 4) for GMC Sierra Classic HD 2007 2500

List of elements for Mid-Line Radio Wiring Diagram, with Rear Seat Audio (4 of 4) for GMC Sierra Classic HD 2007 2500:

• Antenna
• Aud out -
• Bare
• Cellular navigation (gps) & digital radio antenna
• Coax
• Com aud sig
• Computer data lines system
• Data lines
• Digital radio receiver (if equipped) (behind right side of instrument panel)
• Drain wire
• Ground
• Lf aud +
• Lt aud sig
• Rear seat entertainment assembly (if equipped)
• Rt aud +
• Rt aud sig
• Serial data
• W/ digital radio receiver
• W/ rear entertainment assembly
• W/o digital radio receiver
• W/o rear entertainment assembly

Mid-Line Radio Wiring Diagram, without Rear Seat Audio (1 of 4) for GMC Sierra Classic HD 2007 2500

List of elements for Mid-Line Radio Wiring Diagram, without Rear Seat Audio (1 of 4) for GMC Sierra Classic HD 2007 2500:

• A10
• A11
• A12
• Antenna
• B10
• B11
• B12
• B31
• Bare
• Bcm class 2 serial data
• Body control module (below steering column)
• C201
• C277
• Cell voice sig
• Coax
• Common aud sig
• Computer data lines system
• Drain wire
• Enable sig
• G203 (near left "a" pillar)
• Ground
• I/p relay block (near left kick panel)
• Inflatable restraint steering wheel module coil
• Instrument cluster system
• Left aud sig
• Lf spk out+
• Lf spk out-
• Lr spk out +
• Lr spk out -
• Pnk
• Prog
• Radio
• Radio mute
• Radio on sig
• Remote radio control signal
• Rf spk out +
• Rf spk out -
• Right aud sig
• Rr aud sig+
• Rr aud sig-
• Seek dn
• Seek up
• Serial data
• Source dn
• Source up
• Tan
• Upper left steering wheel control switch assembly
• Upper right steering wheel control switch assembly
• Vehicle communication interface module (behind passenger air bag module)
• Voice
• Voice low ref
• Voice signal
• Vol dn
• Vol up
• Vss signal

Mid-Line Radio Wiring Diagram, without Rear Seat Audio (2 of 4) for GMC Sierra Classic HD 2007 2500

List of elements for Mid-Line Radio Wiring Diagram, without Rear Seat Audio (2 of 4) for GMC Sierra Classic HD 2007 2500:

• A10
• A11
• A12
• Audio amplifier
• B10
• B11
• B12
• Bare
• Block (right side of dash, behind access panel)
• Drain wire
• Ground
• Hot at all times
• I/p fuse block (on lower left side of dash)
• I/p junction 2a
• I/p relay block (near left kick panel)
• L spk out+
• L spk out-
• Left front door speaker
• Left front tweeter speaker
• Left rear door speaker
• Lf aud sig+
• Lf aud sig-
• Lf spkr out+
• Lf spkr out-
• Lr aud sig+
• Lr aud sig-
• Lr spkr out+
• Lr spkr out-
• Pnk
• R spk out+
• R spk out-
• Radio amp fuse 30a
• Radio fuse 15a
• Radio mute
• Radio on sig
• Rf aud sig+
• Rf aud sig-
• Rf spkr out+
• Rf spkr out-
• Right front door speaker
• Right front tweeter speaker
• Right rear door speaker
• Rr aud sig+
• Rr aud sig-
• Rr spkr out+
• Rr spkr out-
• Rsa enable
• Subwoofer speaker
• Tan
• Underhood fuse block (at left side of engine compartment)

Mid-Line Radio Wiring Diagram, without Rear Seat Audio (3 of 4) for GMC Sierra Classic HD 2007 2500

List of elements for Mid-Line Radio Wiring Diagram, without Rear Seat Audio (3 of 4) for GMC Sierra Classic HD 2007 2500:

• (not used)
• B11
• Bare
• G203 (near left "a" pillar)
• Hot at all times
• I/p relay block (near left kick panel)
• Info fuse 15a
• Splice pack sp250 (near hvac control module)
• Underhood fuse block (at left side of engine compartment)
• W/ rear seat entertainment assembly & digital radio receiver
• W/ rear seat entertainment assembly w/o digital radio receiver
• W/o rear seat entertainment assembly w/ digital radio receiver

Mid-Line Radio Wiring Diagram, without Rear Seat Audio (4 of 4) for GMC Sierra Classic HD 2007 2500

List of elements for Mid-Line Radio Wiring Diagram, without Rear Seat Audio (4 of 4) for GMC Sierra Classic HD 2007 2500:

• Antenna
• Aud out -
• Bare
• Cellular navigation (gps) & digital radio antenna
• Coax
• Com aud sig
• Computer data lines system
• Data lines
• Digital radio receiver (if equipped) (behind right side of instrument panel)
• Drain wire
• Ground
• Lf aud +
• Lt aud sig
• Rear seat entertainment assembly (if equipped)
• Rt aud +
• Rt aud sig
• Serial data
• W/ digital radio receiver
• W/ rear entertainment assembly
• W/o digital radio receiver
• W/o rear entertainment assembly

Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (1 of 3) for GMC Sierra Classic HD 2007 2500

List of elements for Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (1 of 3) for GMC Sierra Classic HD 2007 2500:

• A10
• A11
• A12
• Antenna
• B10
• B11
• B12
• B31
• Bare
• Bcm class 2 serial data
• Body control module (below steering column)
• C201
• C277
• Cell voice sig
• Coax
• Common aud sig
• Computer data lines system
• Drain wire
• G203 (near left "a" pillar)
• Ground
• Hot at all times
• I/p relay block (near left kick panel)
• Inflatable restraint steering wheel module coil
• Instrument cluster system
• Left aud sig
• Lf aud sig+
• Lf aud sig-
• Lr aud sig +
• Lr aud sig -
• Lr aud sig+
• Lr aud sig-
• Prog
• Radio
• Radio fuse 15a
• Rear seat audio controller
• Remote radio control signal
• Rf aud sig +
• Rf aud sig -
• Right aud sig
• Rr aud sig+
• Rr aud sig-
• S210
• S333
• Seek dn
• Seek up
• Serial data
• Source dn
• Source up
• Tan
• Underhood fuse block (at left side of engine compartment)
• Upper left steering wheel control switch assembly
• Upper right steering wheel control switch assembly
• Vehicle communication interface module (behind right side of dash)
• Voice
• Voice low ref
• Voice signal
• Vol dn
• Vol up
• Vss

Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (2 of 3) for GMC Sierra Classic HD 2007 2500

List of elements for Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (2 of 3) for GMC Sierra Classic HD 2007 2500:

• (under rear of center console)
• A10
• A11
• A12
• Audio amplifier
• B10
• B11
• B12
• Bare
• Computer data lines system
• Drain wire
• Ground
• Hot at all times
• I/p 2b
• I/p fuse block (lower g left side of dash)
• Junction block (right side of dash, behind access panel)
• L spk out+
• L spk out-
• Left front door speaker
• Left front tweeter speaker
• Left rear speaker (extended cab) left rear door speaker (except extended cab)
• Lf aud sig+
• Lf aud sig-
• Lf spkr out+
• Lf spkr out-
• Lr spkr out+
• Lr spkr out-
• Mic sig
• Mic sup volt
• Nca
• Noise compensation microphone
• R spk out+
• R spk out-
• Radio amp fuse 30a
• Rf aud sig+
• Rf aud sig-
• Rf spkr out+
• Rf spkr out-
• Right front door speaker
• Right front tweeter speaker
• Right rear speaker (extended cab) right rear door speaker (except extended cab)
• Rr spkr out+
• Rr spkr out-
• Serial data
• Subwoofer speaker
• Tan
• Underhood fuse block (at left side of engine compartment)

Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (3 of 3) for GMC Sierra Classic HD 2007 2500

List of elements for Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (3 of 3) for GMC Sierra Classic HD 2007 2500:

• (near left "a" pillar) g203
• Antenna
• Aud out -
• Bare
• Cd player remote playback device
• Coax
• Computer data lines system
• Digital radio antenna
• Digital radio receiver
• Dimming
• Drain wire
• Ground
• Hot at all times
• I/p relay block (near left kick panel)
• Info fuse 15a
• Interior lights system
• Lf aud +
• Rt aud +
• S335
• Serial data
• Splice pack sp250 (near hvac control module)
• Tan
• Underhood fuse block (at left side of engine compartment)

Premium Sound Radio Wiring Diagram, with CD (1 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for Premium Sound Radio Wiring Diagram, with CD (1 of 2) for GMC Sierra Classic HD 2007 2500:

• A10
• A11
• A12
• Antenna
• B10
• B11
• B12
• B31
• Bare
• Bcm class 2 serial data
• Body control module (below steering column)
• C drain wire
• C201
• C277
• Coax
• Computer data lines
• Computer data lines system
• Drain wire
• E vss
• G203 (near left "a" pillar)
• Ground
• H left aud sig
• Hot at all times
• I/p relay block (near left kick panel)
• Inflatable restraint steering wheel module coil
• Instrument cluster system
• J right aud sig
• K common aud sig
• L voice low ref
• Lf aud sig+
• Lf aud sig-
• Lr aud sig +
• Lr aud sig -
• Lr aud sig+
• Lr aud sig-
• M cell voice sig
• Prog
• Radio
• Radio fuse 15a
• Rear seat audio controller
• Remote radio control signal
• Rf aud sig +
• Rf aud sig -
• Rr aud sig+
• Rr aud sig-
• S210
• S333
• Seek dn
• Seek up
• Serial data
• Source dn
• Source up
• System
• Tan
• Underhood fuse block (at left side of engine compartment)
• Upper left steering wheel control switch assembly
• Upper right steering wheel control switch assembly
• Vehicle communication interface module (behind right side of dash)
• Voice
• Voice low ref
• Voice signal
• Vol dn
• Vol up

Premium Sound Radio Wiring Diagram, with CD (2 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for Premium Sound Radio Wiring Diagram, with CD (2 of 2) for GMC Sierra Classic HD 2007 2500:

• A10
• A11
• A12
• Aud out -
• Audio amplifier (under rear of center console)
• B10
• B11
• B12
• Bare
• Cd player remote playback device
• Computer data lines system
• Dimming
• Drain wire
• Ground
• Hot at all times
• I/p 2b
• I/p fuse block (lower g
• Info fuse 15a
• Interior lights system
• Junction block (right side of dash, behind access panel)
• L spk out+
• L spk out-
• Left front door speaker
• Left front tweeter speaker
• Left rear speaker (extended cab) left rear door speaker (except extended cab)
• Left side of dash)
• Lf aud +
• Lf aud sig+
• Lf aud sig-
• Lf spkr out+
• Lf spkr out-
• Lr spkr out+
• Lr spkr out-
• Mic sig
• Mic sup volt
• Nca
• Noise compensation microphone
• R spk out+
• R spk out-
• Radio amp fuse 30a
• Rf aud sig+
• Rf aud sig-
• Rf spkr out+
• Rf spkr out-
• Right front door speaker
• Right front tweeter speaker
• Right rear speaker (extended cab) right rear door speaker (except extended cab)
• Rr spkr out+
• Rr spkr out-
• Rt aud +
• S335
• Serial data
• Subwoofer speaker
• Tan
• Underhood fuse block (at left side of engine compartment)

Premium Sound Radio Wiring Diagram, with Digital Radio Receiver (1 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for Premium Sound Radio Wiring Diagram, with Digital Radio Receiver (1 of 2) for GMC Sierra Classic HD 2007 2500:

• A10
• A11
• A12
• Antenna
• B10
• B11
• B12
• B31
• Bare
• Bcm class 2 serial data
• Body control module (below steering column)
• C201
• C277
• Cell voice sig
• Coax
• Common aud sig
• Computer data lines system
• Drain wire
• G203 (near left "a" pillar)
• Ground
• Hot at all times
• I/p relay block (near left kick panel)
• Inflatable restraint steering wheel module coil
• Instrument cluster system
• Left aud sig
• Lf aud sig+
• Lf aud sig-
• Lr aud sig +
• Lr aud sig -
• Lr aud sig+
• Lr aud sig-
• Prog
• Radio
• Radio fuse 15a
• Rear seat audio controller
• Remote radio control signal
• Rf aud sig +
• Rf aud sig -
• Right aud sig
• Rr aud sig+
• Rr aud sig-
• S210
• S333
• Seek dn
• Seek up
• Serial data
• Source dn
• Source up
• Tan
• Underhood fuse block (at left side of engine compartment)
• Upper left steering wheel control switch assembly
• Upper right steering wheel control switch assembly
• Vehicle communication interface module (behind right side of dash)
• Voice
• Voice low ref
• Voice signal
• Vol dn
• Vol up
• Vss

Premium Sound Radio Wiring Diagram, with Digital Radio Receiver (2 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for Premium Sound Radio Wiring Diagram, with Digital Radio Receiver (2 of 2) for GMC Sierra Classic HD 2007 2500:

• A10
• A11
• A12
• Antenna
• Aud out -
• Audio amplifier (under rear of center console)
• B10
• B11
• B12
• B2 mic sig
• Bare
• Coax
• Computer data lines system
• Digital radio antenna
• Digital radio receiver
• Drain wire
• Ground
• Hot at all times
• I/p 2b
• I/p fuse block (lower g
• Junction block (right side of dash, behind access panel)
• L spk out+
• L spk out-
• Left front door speaker
• Left front tweeter speaker
• Left rear speaker (extended cab) left rear door speaker (except extended cab)
• Left side of dash)
• Lf aud +
• Lf aud sig+
• Lf aud sig-
• Lf spkr out+
• Lf spkr out-
• Lr spkr out+
• Lr spkr out-
• Mic sup volt
• Nca
• Noise compensation microphone
• R spk out+
• R spk out-
• Radio amp fuse 30a
• Rf aud sig+
• Rf aud sig-
• Rf spkr out+
• Rf spkr out-
• Right front door speaker
• Right front tweeter speaker
• Right rear speaker (extended cab) right rear door speaker (except extended cab)
• Rr spkr out+
• Rr spkr out-
• Rt aud +
• Serial data
• Subwoofer speaker
• Tan
• Underhood fuse block (at left side of engine compartment)

SHIFT INTERLOCK

Shift Interlock Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Shift Interlock Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• A/t shift lock control solenoid (on steering column)
• Allison trans
• B/u lp fuse 20a
• B12
• Bat
• Body control module (below steering column)
• Btsi fuse 10a
• Class 2
• Computer data lines system
• Ctrl voltage
• Diesel
• E11
• Engine control module (left front of eng compt)
• Except allison trans
• G200 (near right "a" pillar)
• Gasoline
• Hot at all times
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Park/ neutral position switch (left side of trans
• Pnk
• Powertrain control module (left front of eng compt)
• S202
• Stoplamp switch (top of brake pedal bracket)
• Tbc 2c fuse 15a
• Underhood fuse block (left side of engine compt)

STARTING/CHARGING

Charging Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Charging Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (in seo harness)
• (or
• 4.3l
• 6.0l w/ 4 spd a/t
• Auxiliary battery relay (right rear eng compt)
• B12
• Battery
• Battery not charging
• Charge indicator control
• Class 2 serial data
• Computer data lines system
• Driver info center
• Engine on signal
• Except 4.3l
• Except 6.0l 4 spd a/t
• Fuse block- mobile radio (upfitter option)
• Fusible link 4 (14 ga- gray)
• Fusible link 5 (10 ga- red)
• Fusible link 6 (10 ga- red)
• G100 (on left front body mount)
• G102 (right side of engine)
• G103 (on right rear of eng block)
• G103 (right rear of engine block) (except 8.1l)
• G203 (near left "a" pillar)
• Generator
• Generator field duty cycle signal
• Generator battery control module
• Ground
• Hot in run & start
• I/p relay block (under left side of dash, near kick panel)
• Ign 1 volt
• Ign e fuse 10a
• Instrument panel cluster
• Junction block - battery cable
• Left battery
• Logic
• Mega fuse
• Mega fuse 40a
• Pnk
• Power distribution system (trailering option)
• Red
• Right battery
• Right battery (w/aux battery)
• Rvc fuse 10a
• S103 (in engine harness)
• S220
• S223
• Sp205 (in i/p harness)
• Starter
• Underhood fuse block (at left side of eng compt, near battery)
• Volts
• W/ brake vac power
• W/aux battery
• W/dual batteries

Charging Wiring Diagram, Except Hybrid for GMC Sierra Classic HD 2007 2500

List of elements for Charging Wiring Diagram, Except Hybrid for GMC Sierra Classic HD 2007 2500:

• (in seo harness)
• (or
• 4.3l
• 6.0l w/ 4 spd a/t
• Auxiliary battery relay (right rear eng compt)
• B12
• Battery
• Battery not charging
• Charge indicator control
• Class 2 serial data
• Computer data lines system
• Driver info center
• Engine on signal
• Except 4.3l
• Except 6.0l 4 spd a/t
• Fuse block- mobile radio (upfitter option)
• Fusible link 4 (14 ga- gray)
• Fusible link 5 (10 ga- red)
• Fusible link 6 (10 ga- red)
• G100 (on left front body mount)
• G102 (right side of engine)
• G103 (on right rear of eng block)
• G103 (right rear of engine block) (except 8.1l)
• G203 (near left "a" pillar)
• Generator
• Generator field duty cycle signal
• Generator battery control module
• Ground
• Hot in run & start
• I/p relay block (under left side of dash, near kick panel)
• Ign 1 volt
• Ign e fuse 10a
• Instrument panel cluster
• Junction block - battery cable
• Left battery
• Logic
• Mega fuse
• Mega fuse 40a
• Pnk
• Power distribution system (trailering option)
• Red
• Right battery
• Right battery (w/aux battery)
• Rvc fuse 10a
• S103 (in engine harness)
• S220
• S223
• Sp205 (in i/p harness)
• Starter
• Underhood fuse block (at left side of eng compt, near battery)
• Volts
• W/ brake vac power
• W/aux battery
• W/dual batteries

Hybrid Wiring Diagram (1 of 3) for GMC Sierra Classic HD 2007 2500

List of elements for Hybrid Wiring Diagram (1 of 3) for GMC Sierra Classic HD 2007 2500:

• (in seo harness)
• (pin 15-20 not used)
• (pin 3-6 not used)
• 175a
• Apo neutral
• Apo phase a
• Apo switch ind ctrl
• Apo switch sig
• Aux heater pump rly ctrl
• Battery +
• Class 2 serial data
• Computer data lines system
• Coolant pump rly ctrl
• Cooling fans system
• Crank voltage
• Eng spd sig
• Engine speed signal
• Escm fuse 20a
• Fuse block- mobile radio (upfitter option)
• Fusible link 4 (14 ga- grey)
• G100 (lower left radiator core support)
• G102 (left side of engine block)
• G103
• G120 (right rear of engine compt)
• Ground
• Hcm-b fuse 10a
• Hcm-i fuse 10a
• Hi spd gmlan srl data +
• Hi spd gmlan srl data -
• Hi volt interlock loop sig 2
• Hi voltage battery (+)
• Hi voltage battery (-)
• High speed gmlan serial (+)
• High speed gmlan serial (-)
• Hood ajar sw sig
• Hood ajar switch
• Hot at all times
• Hot in run or start
• Hybrid control module
• Hybrid fuse
• Ignition 0 voltage
• Ignition 1 voltage
• Instrument cluster system
• Left battery
• Low ref
• Medium resolu- tion engine speed signal
• Medium resolution eng spd
• Nca
• Phase 1
• Phase 2
• Phase 3
• Pnk
• Pnp start switch signal
• Power distribution system
• Power distribution system (trailering option)
• Powertrain control module (pcm) (on left front of engine compartment)
• Pwr maint rly coil ctrl
• Red
• S103
• S115
• S116
• S180
• S220
• S223
• Starter enable rly ctrl
• Starter/generator
• Starter/generator control module (right rear of eng compt)
• Stud1 fuse 40a
• Tan
• Trans pump rly ctrl
• Transmissions system
• Underhood fuse block (left side of eng compt)
• Underhood secondary fuse block (left side of eng compt, rear of battery)

Hybrid Wiring Diagram (2 of 3) for GMC Sierra Classic HD 2007 2500

List of elements for Hybrid Wiring Diagram (2 of 3) for GMC Sierra Classic HD 2007 2500:

• (in 120v harness) s430
• (in 42v harn)
• (in 42v harn) s121
• (in accessory receptacle harn)
• (in epto pigtail) s431
• 125a
• Acc run
• Auxiliary power outlet- 120 vac (exterior)
• Auxiliary power outlet- 120 vac (interior)
• B12
• Crank fuse 10a
• Ehps fuse
• Electro-hydraulic power steering module
• Energy storage box (esb)
• F10
• G121 (front of right cylinder head)
• G122 (left front of engine)
• G311
• G405 (on right rear frame rail)
• Hot at all times
• Hot in acc, run and start
• I/p fuse block (on lower left side of dash)
• Ign 0 fuse 10a
• Ign a fuse 34 40a
• Ign b fuse 40a
• Ignition switch
• Lock
• Nca
• Park/ neutral position (pnp) switch (on left side of transmission)
• Pickup box inner panel assembly
• Pnk
• Power distribution circuit
• Power maint fuse 10a
• Pwr maint relay
• Red
• S108
• S113
• S114
• S120
• S130
• S131
• S133
• S134
• S326
• S327 (in energy storage harness)
• S330
• S331
• S332
• Start
• Underhood fuse block (at left side of eng compt)
• Underhood secondary fuse block (left side of eng compt, rear of battery)

Hybrid Wiring Diagram (3 of 3) for GMC Sierra Classic HD 2007 2500

List of elements for Hybrid Wiring Diagram (3 of 3) for GMC Sierra Classic HD 2007 2500:

• (in energy storage box)
• (pin 1-14 not used)
• (pin 19-23 not used)
• (pin 25-38 not used)
• (pin 43-47 not used)
• 0rg
• 1-bco
• 1-car
• 1-cs
• 1-fan
• 1-ntc-1
• 1-ntc-2
• 1-ntc-3
• 1-r1
• 1-r2
• 1-r3
• 1-r4
• 2-bco
• 2-car
• 2-cs
• 2-fan
• 2-ntc-1
• 2-ntc-2
• 2-ntc-3
• 3-bco
• 3-car
• 3-cs
• 4-bco
• 4-cs
• 4-fan
• 5-bco
• 7-car
• 8-car
• Batt pos volt
• Battery + voltage
• Battery 1
• Battery 2
• Battery 3
• Battery cut off switch
• Bco control -a
• Bco control -b
• Bco ctrl a
• Bco ctrl b
• Bco status
• C340
• C341
• Compensating coil volt
• Computer data lines system
• Current sens sig a
• Current sensor
• Energy storage box (esb)
• Energy storage box (esb) fan
• Energy storage control module
• Esb fan (+)
• Esb fan (-)
• Fan speed sig
• Fuse 400a
• Fuse holder
• G310 (in energy storage box)
• G311
• Gnd
• Gnd-car
• Ground
• Hi spd gmlan srl data +
• Hi spd gmlan srl data -
• Ignition 0 voltage
• Ignition 1 voltage
• Low ref
• Nca
• Pnk
• Red
• Service disconnect switch
• Temp sens sig 1
• Temp sens sig 2
• Temp sens sig 3
• Temper- ature sensor (battery 1)
• Temper- ature sensor (battery 2)
• Temper- ature sensor (battery 3)
• Voltage sens sig 1
• Voltage sens sig 2
• Voltage sens sig 3
• Voltage sens sig 4
• Voltage sensor

Starting Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Starting Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (8s8)
• (diesel)
• (except 8s8)
• (gasoline)
• 8.1l
• A/t except allison
• Acc
• Allison a/t
• C1 a11
• C1 a3
• C1 a9
• C1 b12
• C2 a7
• C2 d11
• C2 f9
• Charging circuit
• Class2 ser data
• Clutch pedal position switch (m/t) (top of clutch pedal assembly)
• Clutch start sw sign
• Compartment)
• Computer data lines system
• Cooling fans system
• Crank fuse 10a
• Crank volt
• D12
• Diesel
• Engine controls system (diesel)
• Except a/t
• Except diesel
• Except gasoline
• F11
• Fuse block- mobile radio (upfitter option)
• Fusible link 4 (14 ga - gray)
• G100 (on lower left of radiator core support)
• G102 (4.3l: lower right front engine block, exc 4.3l: left side engine block)
• G102 (right side of engine block)
• G103 (right rear of engine block)
• G104 (lower left engine compt)
• G104 (lower left of engine)
• G106 (right front of engine block)
• G200 (behind right side of dash)
• Gasoline
• Gasoline except 8.1l
• Glow plug control module
• Ign a fuse 40a
• Ign b fuse 40a
• Ign e fuse 10a
• Ign1
• Ignition switch
• Instrument panel cluster
• Junction block - battery cable (near left side of eng compt)
• Left battery
• Lock
• M/t
• Mega fuse 125a
• Mega fuse 40a
• Off
• Park/ neutral position switch (on left side of trans)
• Pnk
• Power distribution system (wrecker/auxiliary battery option)
• Powertrain control module (pcm) (gasoline) engine control module (diesel) (on left front of engine
• Red
• Right battery
• Run
• Run off
• Ser data
• Sp205 (in i/p harness)
• Start
• Starter enable rly ctrl
• Starter motor
• Starter relay
• Starter solenoid
• Transmission control module (left front of eng compt)
• Under- hood fuse block (left side of eng compt)
• Underhood fuse block (at left side eng compt)
• W/ allison a/t

Starting Wiring Diagram, Except Hybrid for GMC Sierra Classic HD 2007 2500

List of elements for Starting Wiring Diagram, Except Hybrid for GMC Sierra Classic HD 2007 2500:

• (8s8)
• (diesel)
• (except 8s8)
• (gasoline)
• 8.1l
• A/t except allison
• Acc
• Allison a/t
• C1 a11
• C1 a3
• C1 a9
• C1 b12
• C2 a7
• C2 d11
• C2 f9
• Charging circuit
• Class2 ser data
• Clutch pedal position switch (m/t) (top of clutch pedal assembly)
• Clutch start sw sign
• Compartment)
• Computer data lines system
• Cooling fans system
• Crank fuse 10a
• Crank volt
• D12
• Diesel
• Engine controls system (diesel)
• Except a/t
• Except diesel
• Except gasoline
• F11
• Fuse block- mobile radio (upfitter option)
• Fusible link 4 (14 ga - gray)
• G100 (on lower left of radiator core support)
• G102 (4.3l: lower right front engine block, exc 4.3l: left side engine block)
• G102 (right side of engine block)
• G103 (right rear of engine block)
• G104 (lower left engine compt)
• G104 (lower left of engine)
• G106 (right front of engine block)
• G200 (behind right side of dash)
• Gasoline
• Gasoline except 8.1l
• Glow plug control module
• Ign a fuse 40a
• Ign b fuse 40a
• Ign e fuse 10a
• Ign1
• Ignition switch
• Instrument panel cluster
• Junction block - battery cable (near left side of eng compt)
• Left battery
• Lock
• M/t
• Mega fuse 125a
• Mega fuse 40a
• Off
• Park/ neutral position switch (on left side of trans)
• Pnk
• Power distribution system (wrecker/auxiliary battery option)
• Powertrain control module (pcm) (gasoline) engine control module (diesel) (on left front of engine
• Red
• Right battery
• Run
• Run off
• Ser data
• Sp205 (in i/p harness)
• Start
• Starter enable rly ctrl
• Starter motor
• Starter relay
• Starter solenoid
• Transmission control module (left front of eng compt)
• Under- hood fuse block (left side of eng compt)
• Underhood fuse block (at left side eng compt)
• W/ allison a/t

6.0L VIN U

6.0L VIN U, Charging Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN U, Charging Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (in seo harness)
• (not used)
• (on left front of engine compartment)
• (or red)
• 8.1l
• Anti-lock brake system
• Auxiliary battery relay (right rear of eng compt)
• B+ p
• B12
• Battery
• Battery cable junction block (near left side of eng)
• Battery not charging
• Charge indicator control
• Class 2 serial data
• Computer data lines system
• Driver info center
• Except 8.1l
• Fuse block- mobile radio (upfitter option)
• Fusible link 4 (14 ga- gray)
• Fusible link 5 (10 ga- red)
• Fusible link 6 (10 ga- red)
• G100 (lower left radiator support)
• G102 (left side of engine block)
• G106 (on right front of eng block) (8.1l) g103 (right rear of engine block) (except 8.1l)
• G203 (near left "a" pillar)
• Generator field duty cycle signal
• Generator l
• Ground
• Hot in run & start
• I/p relay block (near left kick panel)
• Ign 1 volt
• Ign e fuse 10a
• Instrument panel cluster
• Left battery
• Logic
• Mega fuse
• Mega fuse 40a
• Pnk
• Power distribution system
• Powertrain control module (pcm)
• Red
• Right battery
• Right battery (w/aux battery)
• S220
• S223
• Seo ign fuse 10a
• Serial data class 2
• Sp205 (in i/p harn)
• Starter
• Underhood fuse block (at left side of eng compt)
• Volts
• W/ seo
• W/aux battery
• W/dual batteries
• W/o seo
• Wrecker option

6.6L VIN 2

6.6L VIN 2, Charging Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN 2, Charging Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (in engine harness)
• (not used)
• (on left front of engine compartment)
• Auxiliary battery relay (right rear of eng compt)
• B12
• Battery
• Battery not charging
• Charge indicator control
• Class 2 serial data
• Computer data lines
• Driver info center
• Dual generators
• Engine control module (ecm)
• Engine controls system
• Fuse block- mobile radio (upfitter option)
• Fusible link 4 (14 ga- gray)
• Fusible link 5 (10 ga- red)
• Fusible link 6 (10 ga- red)
• G100 (lower left radiator support)
• G102 (right side of eng block)
• G104 (left rear of engine block)
• G203 (near left "a" pillar)
• Generator 2 turn 0n sig
• Generator field duty cycle signal
• Ground
• Hot in run & start
• I/p relay block (near left kick panel)
• Ign 1 volt
• Ign e fuse 10a
• Instrument panel cluster
• Junction block - battery cable (at left side of eng compt, near battery)
• Left battery
• Left generator
• Logic
• Mega fuse
• Mega fuse 40a
• Pnk
• Power distribution system
• Red
• Right battery
• Right battery (w/aux battery)
• Right generator
• S150
• S220
• S223
• Seo ign fuse 10a
• Serial data class 2
• Sp205 (in i/p harn)
• Starter
• Underhood fuse block (at left side of eng compt)
• Volts
• W/ seo
• W/aux battery
• W/dual batteries
• W/o seo
• Wrecker option

6.6L VIN D

6.6L VIN D, Charging Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN D, Charging Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (in engine harness)
• (not used)
• (on left front of engine compartment)
• Auxiliary battery relay (right rear of eng compt)
• B12
• Battery
• Battery not charging
• Charge indicator control
• Class 2 serial data
• Computer data lines
• Driver info center
• Dual generators
• Engine control module (ecm)
• Engine controls system
• Fuse block- mobile radio (upfitter option)
• Fusible link 4 (14 ga- gray)
• Fusible link 5 (10 ga- red)
• Fusible link 6 (10 ga- red)
• G100 (lower left radiator support)
• G102 (right side of eng block)
• G104 (left rear of engine block)
• G203 (near left "a" pillar)
• Generator 2 turn 0n sig
• Generator field duty cycle signal
• Ground
• Hot in run & start
• I/p relay block (near left kick panel)
• Ign 1 volt
• Ign e fuse 10a
• Instrument panel cluster
• Junction block - battery cable (at left side of eng compt, near battery)
• Left battery
• Left generator
• Logic
• Mega fuse
• Mega fuse 40a
• Pnk
• Power distribution system
• Red
• Right battery
• Right battery (w/aux battery)
• Right generator
• S150
• S220
• S223
• Seo ign fuse 10a
• Serial data class 2
• Sp205 (in i/p harn)
• Starter
• Underhood fuse block (at left side of eng compt)
• Volts
• W/ seo
• W/aux battery
• W/dual batteries
• W/o seo
• Wrecker option

8.1L VIN G

8.1L VIN G, Charging Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for 8.1L VIN G, Charging Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (in seo harness)
• (not used)
• (on left front of engine compartment)
• (or red)
• 8.1l
• Anti-lock brake system
• Auxiliary battery relay (right rear of eng compt)
• B+ p
• B12
• Battery
• Battery cable junction block (near left side of eng)
• Battery not charging
• Charge indicator control
• Class 2 serial data
• Computer data lines system
• Driver info center
• Except 8.1l
• Fuse block- mobile radio (upfitter option)
• Fusible link 4 (14 ga- gray)
• Fusible link 5 (10 ga- red)
• Fusible link 6 (10 ga- red)
• G100 (lower left radiator support)
• G102 (left side of engine block)
• G106 (on right front of eng block) (8.1l) g103 (right rear of engine block) (except 8.1l)
• G203 (near left "a" pillar)
• Generator field duty cycle signal
• Generator l
• Ground
• Hot in run & start
• I/p relay block (near left kick panel)
• Ign 1 volt
• Ign e fuse 10a
• Instrument panel cluster
• Left battery
• Logic
• Mega fuse
• Mega fuse 40a
• Pnk
• Power distribution system
• Powertrain control module (pcm)
• Red
• Right battery
• Right battery (w/aux battery)
• S220
• S223
• Seo ign fuse 10a
• Serial data class 2
• Sp205 (in i/p harn)
• Starter
• Underhood fuse block (at left side of eng compt)
• Volts
• W/ seo
• W/aux battery
• W/dual batteries
• W/o seo
• Wrecker option

TRANSMISSION

4.3L VIN X

4.3L VIN X, A/T Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for 4.3L VIN X, A/T Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (behind left side of dash, near left "a" pillar g203
• (not used)
• (right rear of engine block) g103
• 1-2 shift solenoid
• 1-2 ss
• 2-3 shift solenoid
• 2-3 ss
• 3-2 shift solenoid
• 3-2 ss
• 4wd low
• A/t fluid pressure (ftp) manual valve position switch
• Automatic transmission (4l60-e)
• B10
• B11
• B12
• Body control module (lower left side of dash)
• Brk fuse 10a
• Brk sw
• C12
• Cls 2 data
• Cruise control system
• Data link connector (under left side of dash)
• E11
• Ect sig
• Engine coolant temperature sensor (rear side of left cylinder head)
• Except seo
• Fluid temp sensor
• Frt axle sw
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Hot in run, acc & start
• I/p fuse block (lower left side of dash)
• I/p relay block (near left kick panel)
• Ign
• Ign 0 fuse 10a
• Instrument panel cluster (ipc)
• Ipc/dic fuse 10a
• Lo ref
• Logig
• Malfunction indicator lamp
• Mil ctrl
• N/p
• Park/neutral position switch (left side of transmission)
• Pc sol hi
• Pc sol lo
• Pcm 1 fuse 15a
• Pcm b fuse 20a
• Pnk
• Power distribution system
• Powertrain control module (left front of engine compt)
• Press ctrl solenoid
• Prnd a
• Prnd b
• Prnd c
• Prnd p
• Range b
• Range c
• Red
• Red a
• Red b
• Rev
• S103
• S125
• S217
• Sens gnd
• Seo
• Seo b1 fuse 15a
• Splice pack sp205 (in i/p harness)
• Stoplight switch (top of brake pedal bracket)
• Tan
• Tcc pwm
• Tcc pwm solenoid
• Tcc sol
• Tcc solenoid
• Tft sens sig
• Tow/ haul ind
• Tow/haul switch
• Trans rng a
• Transfer case circuit
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (2wd: right rear of transmission) (4wd: left side of transfer case)
• Vss hi
• Vss lo

4.3L VIN X, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra Classic HD 2007 2500

List of elements for 4.3L VIN X, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra Classic HD 2007 2500:

• (behind right side of dash, near right "a" pillar)
• (in i/p harness)
• (left front of engine compt) powertrain control module
• (on left front body mount) g110
• +5v ref
• 2-hi ind
• 2wd
• 4 hi
• 4 lo
• 4-hi ind
• 4-lo ind
• 4wd fuse 15a
• 4wd indicator lamp
• 4wd lo sig
• 4wd sw sig
• 8s8
• Awd
• Awd ind
• Axle ctrl
• Axle sw sig
• Battery
• Brake control
• Class ii data
• Ctrl
• Data link connector (under left side of dash)
• Encoder
• Encoder low
• Encoder sig
• Except 8s8
• Front axle actuator (on front axle)
• Front propshaft speed sensor (on left front side of transfer case)
• Ft shaft hi
• Ft shaft lo
• G200
• G203 (behind left side of dash, near left "a" pillar)
• Gnd
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• I/p relay block (under c1
• Ign e fuse 10a
• Illumination
• Instrument panel cluster
• Interior lights system
• Left side of dash)
• Lock sol ctrl
• Logic
• Motor ctrl a
• Motor ctrl b
• Neutral ind
• Pnk
• Rear propshaft speed sensor (on transfer case extension housing)
• Red
• Rr shaft hi
• Rr shaft lo
• S202
• S214 (in i/p harness)
• Seo ign fuse 10a
• Shift motor
• Splice pack sp205 (in i/p harness)
• Tan
• Transfer case encoder motor (left side of transfer case)
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch
• Trec fuse 30a
• Underhood fuse block (left side of engine compt)

4.3L VIN X, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500

List of elements for 4.3L VIN X, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500:

• (in engine harness) s165
• (w/ allison transmission)
• 4wd fuse 15a
• 4wd indicator lamp
• 8s8
• Data link connector (under left side of dash below steering column)
• Diesel (ecm)
• E2 c1
• Electronic brake control module (on left side of inner frame)
• Except 8s8
• Front axle actuator (on front axle)
• G110 (on left front body mount)
• Gas (pcm)
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Ign e fuse 10a
• Instrument panel cluster
• Logic
• Pnk
• Powertrain control module (gas engines) or engine control module (diesel) (left front of engine compt)
• Seo ign fuse 10a
• Splice pack sp205 (in i/p harn)
• Transfer case shift control switch (on top of transfer case)
• Transmission control module (w/ allison trans) (left front of engine compt)
• Underhood fuse block (left side of engine compt)

4.8L VIN V

4.8L VIN V, A/T Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for 4.8L VIN V, A/T Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (behind left side of dash) g203
• (left rear of engine compt) throttle actuator control module
• (not used)
• (right rear of engine block) g103
• 1-2 shift solenoid
• 1-2 ss
• 2-3 shift solenoid
• 2-3 ss
• 3-2 shift solenoid
• 3-2 ss
• 4wd low
• 8s8
• A/t fluid pressure manual valve position switch
• Automatic transmission (4l60-e)
• B10
• B11
• B12
• Body control module (lower left side of dash, below steering column)
• Brk fuse 10a
• Brk sw
• C12
• Cls 2 data
• Data link connector (under left side of dash, below steering column)
• E11
• Ect sig
• Engine coolant temperature sensor (front side of left cylinder head)
• Except 8s8
• Fluid temp sensor
• Frt axle sw
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Hot in run, acc & start
• I/p fuse block (lower left side of dash)
• I/p relay block (near left kick panel)
• Ign
• Ign 0 fuse 10a
• Instrument panel cluster (ipc)
• Ipc/dic fuse 10a
• Lo ref
• Malfunction indicator lamp
• Mil ctrl
• P/n
• Park/neutral position switch (left side of transmission)
• Pc sol hi
• Pc sol lo
• Pcm 1 fuse 15a
• Pcm b fuse 20a
• Pnk
• Power distribution system
• Powertrain control module (left front of engine compt)
• Press ctrl solenoid
• Prnd a
• Prnd b
• Prnd c
• Prnd p
• Range b
• Range c
• Red
• Red a
• Red b
• Rev
• S103
• S125
• S217
• Sens gnd
• Seo b1 fuse 15a
• Serial data
• Splice pack sp205 (in i/p harness)
• Stoplight switch (top of brake pedal bracket)
• Tan
• Tcc pwm
• Tcc pwm solenoid
• Tcc sol
• Tcc solenoid
• Tft sens sig
• Tow/haul switch
• Trans rng a
• Transfer case circuit (4wd)
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (2wd: right rear of transmission) (4wd: left side of transfer case)
• Vss hi
• Vss lo

4.8L VIN V, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra Classic HD 2007 2500

List of elements for 4.8L VIN V, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra Classic HD 2007 2500:

• (behind right side of dash, near right "a" pillar)
• (in i/p harness)
• (left front of engine compt) powertrain control module
• (on left front body mount) g110
• +5v ref
• 2-hi ind
• 2wd
• 4 hi
• 4 lo
• 4-hi ind
• 4-lo ind
• 4wd fuse 15a
• 4wd indicator lamp
• 4wd lo sig
• 4wd sw sig
• 8s8
• Awd
• Awd ind
• Axle ctrl
• Axle sw sig
• Battery
• Brake control
• Class ii data
• Ctrl
• Data link connector (under left side of dash)
• Encoder
• Encoder low
• Encoder sig
• Except 8s8
• Front axle actuator (on front axle)
• Front propshaft speed sensor (on left front side of transfer case)
• Ft shaft hi
• Ft shaft lo
• G200
• G203 (behind left side of dash, near left "a" pillar)
• Gnd
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• I/p relay block (under c1
• Ign e fuse 10a
• Illumination
• Instrument panel cluster
• Interior lights system
• Left side of dash)
• Lock sol ctrl
• Logic
• Motor ctrl a
• Motor ctrl b
• Neutral ind
• Pnk
• Rear propshaft speed sensor (on transfer case extension housing)
• Red
• Rr shaft hi
• Rr shaft lo
• S202
• S214 (in i/p harness)
• Seo ign fuse 10a
• Shift motor
• Splice pack sp205 (in i/p harness)
• Tan
• Transfer case encoder motor (left side of transfer case)
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch
• Trec fuse 30a
• Underhood fuse block (left side of engine compt)

4.8L VIN V, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500

List of elements for 4.8L VIN V, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500:

• (in engine harness) s165
• (w/ allison transmission)
• 4wd fuse 15a
• 4wd indicator lamp
• 8s8
• Data link connector (under left side of dash below steering column)
• Diesel (ecm)
• E2 c1
• Electronic brake control module (on left side of inner frame)
• Except 8s8
• Front axle actuator (on front axle)
• G110 (on left front body mount)
• Gas (pcm)
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Ign e fuse 10a
• Instrument panel cluster
• Logic
• Pnk
• Powertrain control module (gas engines) or engine control module (diesel) (left front of engine compt)
• Seo ign fuse 10a
• Splice pack sp205 (in i/p harn)
• Transfer case shift control switch (on top of transfer case)
• Transmission control module (w/ allison trans) (left front of engine compt)
• Underhood fuse block (left side of engine compt)

5.3L VIN B

5.3L VIN B, A/T Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN B, A/T Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (behind left side of dash) g203
• (left rear of engine compt) throttle actuator control module
• (not used)
• (right rear of engine block) g103
• 1-2 shift solenoid
• 1-2 ss
• 2-3 shift solenoid
• 2-3 ss
• 3-2 shift solenoid
• 3-2 ss
• 4wd low
• 8s8
• A/t fluid pressure manual valve position switch
• Automatic transmission (4l60-e)
• B10
• B11
• B12
• Body control module (lower left side of dash, below steering column)
• Brk fuse 10a
• Brk sw
• C12
• Cls 2 data
• Data link connector (under left side of dash, below steering column)
• E11
• Ect sig
• Engine coolant temperature sensor (front side of left cylinder head)
• Except 8s8
• Fluid temp sensor
• Frt axle sw
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Hot in run, acc & start
• I/p fuse block (lower left side of dash)
• I/p relay block (near left kick panel)
• Ign
• Ign 0 fuse 10a
• Instrument panel cluster (ipc)
• Ipc/dic fuse 10a
• Lo ref
• Malfunction indicator lamp
• Mil ctrl
• P/n
• Park/neutral position switch (left side of transmission)
• Pc sol hi
• Pc sol lo
• Pcm 1 fuse 15a
• Pcm b fuse 20a
• Pnk
• Power distribution system
• Powertrain control module (left front of engine compt)
• Press ctrl solenoid
• Prnd a
• Prnd b
• Prnd c
• Prnd p
• Range b
• Range c
• Red
• Red a
• Red b
• Rev
• S103
• S125
• S217
• Sens gnd
• Seo b1 fuse 15a
• Serial data
• Splice pack sp205 (in i/p harness)
• Stoplight switch (top of brake pedal bracket)
• Tan
• Tcc pwm
• Tcc pwm solenoid
• Tcc sol
• Tcc solenoid
• Tft sens sig
• Tow/haul switch
• Trans rng a
• Transfer case circuit (4wd)
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (2wd: right rear of transmission) (4wd: left side of transfer case)
• Vss hi
• Vss lo

5.3L VIN B, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN B, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra Classic HD 2007 2500:

• (behind right side of dash, near right "a" pillar)
• (in i/p harness)
• (left front of engine compt) powertrain control module
• (on left front body mount) g110
• +5v ref
• 2-hi ind
• 2wd
• 4 hi
• 4 lo
• 4-hi ind
• 4-lo ind
• 4wd fuse 15a
• 4wd indicator lamp
• 4wd lo sig
• 4wd sw sig
• 8s8
• Awd
• Awd ind
• Axle ctrl
• Axle sw sig
• Battery
• Brake control
• Class ii data
• Ctrl
• Data link connector (under left side of dash)
• Encoder
• Encoder low
• Encoder sig
• Except 8s8
• Front axle actuator (on front axle)
• Front propshaft speed sensor (on left front side of transfer case)
• Ft shaft hi
• Ft shaft lo
• G200
• G203 (behind left side of dash, near left "a" pillar)
• Gnd
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• I/p relay block (under c1
• Ign e fuse 10a
• Illumination
• Instrument panel cluster
• Interior lights system
• Left side of dash)
• Lock sol ctrl
• Logic
• Motor ctrl a
• Motor ctrl b
• Neutral ind
• Pnk
• Rear propshaft speed sensor (on transfer case extension housing)
• Red
• Rr shaft hi
• Rr shaft lo
• S202
• S214 (in i/p harness)
• Seo ign fuse 10a
• Shift motor
• Splice pack sp205 (in i/p harness)
• Tan
• Transfer case encoder motor (left side of transfer case)
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch
• Trec fuse 30a
• Underhood fuse block (left side of engine compt)

5.3L VIN B, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN B, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500:

• (in engine harness) s165
• (w/ allison transmission)
• 4wd fuse 15a
• 4wd indicator lamp
• 8s8
• Data link connector (under left side of dash below steering column)
• Diesel (ecm)
• E2 c1
• Electronic brake control module (on left side of inner frame)
• Except 8s8
• Front axle actuator (on front axle)
• G110 (on left front body mount)
• Gas (pcm)
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Ign e fuse 10a
• Instrument panel cluster
• Logic
• Pnk
• Powertrain control module (gas engines) or engine control module (diesel) (left front of engine compt)
• Seo ign fuse 10a
• Splice pack sp205 (in i/p harn)
• Transfer case shift control switch (on top of transfer case)
• Transmission control module (w/ allison trans) (left front of engine compt)
• Underhood fuse block (left side of engine compt)

5.3L VIN T

5.3L VIN T, A/T Wiring Diagram, Except Hybrid for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, A/T Wiring Diagram, Except Hybrid for GMC Sierra Classic HD 2007 2500:

• (behind left side of dash) g203
• (left rear of engine compt) throttle actuator control module
• (not used)
• (right rear of engine block) g103
• 1-2 shift solenoid
• 1-2 ss
• 2-3 shift solenoid
• 2-3 ss
• 3-2 shift solenoid
• 3-2 ss
• 4wd low
• 8s8
• A/t fluid pressure manual valve position switch
• Automatic transmission (4l60-e)
• B10
• B11
• B12
• Body control module (lower left side of dash, below steering column)
• Brk fuse 10a
• Brk sw
• C12
• Cls 2 data
• Data link connector (under left side of dash, below steering column)
• E11
• Ect sig
• Engine coolant temperature sensor (front side of left cylinder head)
• Except 8s8
• Fluid temp sensor
• Frt axle sw
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Hot in run, acc & start
• I/p fuse block (lower left side of dash)
• I/p relay block (near left kick panel)
• Ign
• Ign 0 fuse 10a
• Instrument panel cluster (ipc)
• Ipc/dic fuse 10a
• Lo ref
• Malfunction indicator lamp
• Mil ctrl
• P/n
• Park/neutral position switch (left side of transmission)
• Pc sol hi
• Pc sol lo
• Pcm 1 fuse 15a
• Pcm b fuse 20a
• Pnk
• Power distribution system
• Powertrain control module (left front of engine compt)
• Press ctrl solenoid
• Prnd a
• Prnd b
• Prnd c
• Prnd p
• Range b
• Range c
• Red
• Red a
• Red b
• Rev
• S103
• S125
• S217
• Sens gnd
• Seo b1 fuse 15a
• Serial data
• Splice pack sp205 (in i/p harness)
• Stoplight switch (top of brake pedal bracket)
• Tan
• Tcc pwm
• Tcc pwm solenoid
• Tcc sol
• Tcc solenoid
• Tft sens sig
• Tow/haul switch
• Trans rng a
• Transfer case circuit (4wd)
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (2wd: right rear of transmission) (4wd: left side of transfer case)
• Vss hi
• Vss lo

5.3L VIN T, A/T Wiring Diagram, Hybrid for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, A/T Wiring Diagram, Hybrid for GMC Sierra Classic HD 2007 2500:

• (behind left side of dash) g203
• (in i/p harn) splice pack sp205
• (left front of engine compt) powertrain control module
• (not used)
• (on left rear of engine block) g104
• (right rear of engine block) g103
• 1-2 shift solenoid
• 1-2 ss
• 2-3 shift solenoid
• 2-3 ss
• 3-2 shift solenoid
• 3-2 ss
• 4wd low
• A/t fluid pressure (ftp) manual valve position switch
• Automatic transmission (4l60-e)
• Auxiliary transmission fluid pump
• B10
• B11
• B12
• Body control module (lower left side of dash, below steering column)
• Brk fuse 10a
• Brk sw
• C12
• Cls 2 data
• Data link connector (under left side of dash, below steering column)
• E11
• Ect sig
• Engine coolant temperature sensor (front side of left cylinder head)
• Except seo
• Fluid temp sensor
• Frt axle sw
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Hot in run, acc & start
• Hot w/ pwr maint relay energized
• Hybrid control module
• I/p fuse block (lower left side of dash)
• I/p relay block (near left kick panel)
• Ign
• Ign 0 fuse 10a
• Instrument panel cluster (ipc)
• Ipc/dic fuse 10a
• Lo ref
• Malfunction indicator lamp
• Mil ctrl
• N/p
• Park/neutral position switch (left side of transmission)
• Pc sol hi
• Pc sol lo
• Pcm 1 fuse 15a
• Pcm b fuse 20a
• Pnk
• Power distribution system
• Press ctrl solenoid
• Prnd a
• Prnd b
• Prnd c
• Prnd p
• Pwr maint 10a
• Range b
• Range c
• Red
• Red a
• Red b
• Rev
• S102
• S103
• S113
• S117
• S125
• S135
• Secondary underhood fuse block (left side of engine compt, rear of battery)
• Sens gnd
• Seo
• Seo b1 fuse 15a
• Serial data
• Stoplight switch (top of brake pedal bracket)
• Tan
• Tcc pwm
• Tcc pwm solenoid
• Tcc sol
• Tcc solenoid
• Tft sens sig
• Throttle actuator control module (left rear of engine c1 compt)
• Tow/ haul ind
• Tow/haul switch
• Trans pmp relay
• Trans pump fuse 15a
• Trans rng a
• Transfer case circuit (4wd)
• Underhood fuse block (left side of engine c2 compt)
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (right rear of transmission)
• Vss hi
• Vss lo

5.3L VIN T, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra Classic HD 2007 2500:

• (behind right side of dash, near right "a" pillar)
• (in i/p harness)
• (left front of engine compt) powertrain control module
• (on left front body mount) g110
• +5v ref
• 2-hi ind
• 2wd
• 4 hi
• 4 lo
• 4-hi ind
• 4-lo ind
• 4wd fuse 15a
• 4wd indicator lamp
• 4wd lo sig
• 4wd sw sig
• 8s8
• Awd
• Awd ind
• Axle ctrl
• Axle sw sig
• Battery
• Brake control
• Class ii data
• Ctrl
• Data link connector (under left side of dash)
• Encoder
• Encoder low
• Encoder sig
• Except 8s8
• Front axle actuator (on front axle)
• Front propshaft speed sensor (on left front side of transfer case)
• Ft shaft hi
• Ft shaft lo
• G200
• G203 (behind left side of dash, near left "a" pillar)
• Gnd
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• I/p relay block (under c1
• Ign e fuse 10a
• Illumination
• Instrument panel cluster
• Interior lights system
• Left side of dash)
• Lock sol ctrl
• Logic
• Motor ctrl a
• Motor ctrl b
• Neutral ind
• Pnk
• Rear propshaft speed sensor (on transfer case extension housing)
• Red
• Rr shaft hi
• Rr shaft lo
• S202
• S214 (in i/p harness)
• Seo ign fuse 10a
• Shift motor
• Splice pack sp205 (in i/p harness)
• Tan
• Transfer case encoder motor (left side of transfer case)
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch
• Trec fuse 30a
• Underhood fuse block (left side of engine compt)

5.3L VIN T, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN T, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500:

• (in engine harness) s165
• (w/ allison transmission)
• 4wd fuse 15a
• 4wd indicator lamp
• 8s8
• Data link connector (under left side of dash below steering column)
• Diesel (ecm)
• E2 c1
• Electronic brake control module (on left side of inner frame)
• Except 8s8
• Front axle actuator (on front axle)
• G110 (on left front body mount)
• Gas (pcm)
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Ign e fuse 10a
• Instrument panel cluster
• Logic
• Pnk
• Powertrain control module (gas engines) or engine control module (diesel) (left front of engine compt)
• Seo ign fuse 10a
• Splice pack sp205 (in i/p harn)
• Transfer case shift control switch (on top of transfer case)
• Transmission control module (w/ allison trans) (left front of engine compt)
• Underhood fuse block (left side of engine compt)

5.3L VIN Z

5.3L VIN Z, A/T Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN Z, A/T Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (behind left side of dash) g203
• (left rear of engine compt) throttle actuator control module
• (not used)
• (right rear of engine block) g103
• 1-2 shift solenoid
• 1-2 ss
• 2-3 shift solenoid
• 2-3 ss
• 3-2 shift solenoid
• 3-2 ss
• 4wd low
• 8s8
• A/t fluid pressure manual valve position switch
• Automatic transmission (4l60-e)
• B10
• B11
• B12
• Body control module (lower left side of dash, below steering column)
• Brk fuse 10a
• Brk sw
• C12
• Cls 2 data
• Data link connector (under left side of dash, below steering column)
• E11
• Ect sig
• Engine coolant temperature sensor (front side of left cylinder head)
• Except 8s8
• Fluid temp sensor
• Frt axle sw
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Hot in run, acc & start
• I/p fuse block (lower left side of dash)
• I/p relay block (near left kick panel)
• Ign
• Ign 0 fuse 10a
• Instrument panel cluster (ipc)
• Ipc/dic fuse 10a
• Lo ref
• Malfunction indicator lamp
• Mil ctrl
• P/n
• Park/neutral position switch (left side of transmission)
• Pc sol hi
• Pc sol lo
• Pcm 1 fuse 15a
• Pcm b fuse 20a
• Pnk
• Power distribution system
• Powertrain control module (left front of engine compt)
• Press ctrl solenoid
• Prnd a
• Prnd b
• Prnd c
• Prnd p
• Range b
• Range c
• Red
• Red a
• Red b
• Rev
• S103
• S125
• S217
• Sens gnd
• Seo b1 fuse 15a
• Serial data
• Splice pack sp205 (in i/p harness)
• Stoplight switch (top of brake pedal bracket)
• Tan
• Tcc pwm
• Tcc pwm solenoid
• Tcc sol
• Tcc solenoid
• Tft sens sig
• Tow/haul switch
• Trans rng a
• Transfer case circuit (4wd)
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (2wd: right rear of transmission) (4wd: left side of transfer case)
• Vss hi
• Vss lo

5.3L VIN Z, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN Z, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra Classic HD 2007 2500:

• (behind right side of dash, near right "a" pillar)
• (in i/p harness)
• (left front of engine compt) powertrain control module
• (on left front body mount) g110
• +5v ref
• 2-hi ind
• 2wd
• 4 hi
• 4 lo
• 4-hi ind
• 4-lo ind
• 4wd fuse 15a
• 4wd indicator lamp
• 4wd lo sig
• 4wd sw sig
• 8s8
• Awd
• Awd ind
• Axle ctrl
• Axle sw sig
• Battery
• Brake control
• Class ii data
• Ctrl
• Data link connector (under left side of dash)
• Encoder
• Encoder low
• Encoder sig
• Except 8s8
• Front axle actuator (on front axle)
• Front propshaft speed sensor (on left front side of transfer case)
• Ft shaft hi
• Ft shaft lo
• G200
• G203 (behind left side of dash, near left "a" pillar)
• Gnd
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• I/p relay block (under c1
• Ign e fuse 10a
• Illumination
• Instrument panel cluster
• Interior lights system
• Left side of dash)
• Lock sol ctrl
• Logic
• Motor ctrl a
• Motor ctrl b
• Neutral ind
• Pnk
• Rear propshaft speed sensor (on transfer case extension housing)
• Red
• Rr shaft hi
• Rr shaft lo
• S202
• S214 (in i/p harness)
• Seo ign fuse 10a
• Shift motor
• Splice pack sp205 (in i/p harness)
• Tan
• Transfer case encoder motor (left side of transfer case)
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch
• Trec fuse 30a
• Underhood fuse block (left side of engine compt)

5.3L VIN Z, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500

List of elements for 5.3L VIN Z, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500:

• (in engine harness) s165
• (w/ allison transmission)
• 4wd fuse 15a
• 4wd indicator lamp
• 8s8
• Data link connector (under left side of dash below steering column)
• Diesel (ecm)
• E2 c1
• Electronic brake control module (on left side of inner frame)
• Except 8s8
• Front axle actuator (on front axle)
• G110 (on left front body mount)
• Gas (pcm)
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Ign e fuse 10a
• Instrument panel cluster
• Logic
• Pnk
• Powertrain control module (gas engines) or engine control module (diesel) (left front of engine compt)
• Seo ign fuse 10a
• Splice pack sp205 (in i/p harn)
• Transfer case shift control switch (on top of transfer case)
• Transmission control module (w/ allison trans) (left front of engine compt)
• Underhood fuse block (left side of engine compt)

6.0L VIN N

6.0L VIN N, A/T Wiring Diagram, 4L60-E for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN N, A/T Wiring Diagram, 4L60-E for GMC Sierra Classic HD 2007 2500:

• (behind left side of dash) g203
• (left rear of engine compt) throttle actuator control module
• (not used)
• (right rear of engine block) g103
• 1-2 shift solenoid
• 1-2 ss
• 2-3 shift solenoid
• 2-3 ss
• 3-2 shift solenoid
• 3-2 ss
• 4wd low
• 8s8
• A/t fluid pressure manual valve position switch
• Automatic transmission (4l60-e)
• B10
• B11
• B12
• Body control module (lower left side of dash, below steering column)
• Brk fuse 10a
• Brk sw
• C12
• Cls 2 data
• Data link connector (under left side of dash, below steering column)
• E11
• Ect sig
• Engine coolant temperature sensor (front side of left cylinder head)
• Except 8s8
• Fluid temp sensor
• Frt axle sw
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Hot in run, acc & start
• I/p fuse block (lower left side of dash)
• I/p relay block (near left kick panel)
• Ign
• Ign 0 fuse 10a
• Instrument panel cluster (ipc)
• Ipc/dic fuse 10a
• Lo ref
• Malfunction indicator lamp
• Mil ctrl
• P/n
• Park/neutral position switch (left side of transmission)
• Pc sol hi
• Pc sol lo
• Pcm 1 fuse 15a
• Pcm b fuse 20a
• Pnk
• Power distribution system
• Powertrain control module (left front of engine compt)
• Press ctrl solenoid
• Prnd a
• Prnd b
• Prnd c
• Prnd p
• Range b
• Range c
• Red
• Red a
• Red b
• Rev
• S103
• S125
• S217
• Sens gnd
• Seo b1 fuse 15a
• Serial data
• Splice pack sp205 (in i/p harness)
• Stoplight switch (top of brake pedal bracket)
• Tan
• Tcc pwm
• Tcc pwm solenoid
• Tcc sol
• Tcc solenoid
• Tft sens sig
• Tow/haul switch
• Trans rng a
• Transfer case circuit (4wd)
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (2wd: right rear of transmission) (4wd: left side of transfer case)
• Vss hi
• Vss lo

6.0L VIN N, A/T Wiring Diagram, 4L80-E for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN N, A/T Wiring Diagram, 4L80-E for GMC Sierra Classic HD 2007 2500:

• (behind left side of dash) g203
• (not used)
• (right rear of engine block) g103
• 1-2 shift solenoid
• 1-2 ss
• 2-3 shift solenoid
• 2-3 ss
• 4wd low
• A/t fluid pressure manual manual valve position switch
• At iss hi
• At iss lo
• Automatic transmission (4l80-e)
• Automatic transmission input shaft speed sensor (in automatic transmission)
• B10
• B11
• B12
• Body control module (lower left side of dash, below steering column)
• Brake fuse 10a
• Brk sw
• C12
• Cls 2 data
• Data link connector (under left side of dash, below steering column)
• E11
• Ect sig
• Engine coolant temperature sensor (front side of left cylinder head)
• Except seo
• Fluid temp sensor
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Hot in run, acc & start
• I/p fuse block (lower left side of dash)
• I/p relay block (near left kick panel)
• Ign
• Ign0 fuse 10a
• Instrument panel cluster (ipc)
• Ipc/dic fuse 10a
• Lo ref
• Malfunction indicator lamp
• Mil ctrl
• P/n
• Park/neutral position switch (left side of transmission)
• Pc sol hi
• Pc sol lo
• Pcm 1 fuse 15a
• Pcm b fuse 20a
• Pnk
• Power distribution system
• Powertrain control module (left front of engine compt)
• Press ctrl solenoid
• Prnd a
• Prnd b
• Prnd c
• Prnd p
• Range b
• Range c
• Red
• Red a
• Red b
• Rev
• S103
• S117
• S125
• Sens gnd
• Seo
• Seo b1 fuse 15a
• Serial data
• Splice pack sp205 (in i/p harness)
• Stoplight switch (top of brake pedal bracket)
• Tcc pwm
• Tcc pwm solenoid
• Tft sens sig
• Throttle actuator control module (left rear of engine compt)
• Tow/ haul
• Tow/haul switch
• Trans rng a
• Transfer case circuit (4wd)
• Underhood fuse block (left side of engine c2 compt)
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (2wd: left rear of transmission) (4wd: left side of transfer case)
• Vss hi
• Vss lo

6.0L VIN N, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN N, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra Classic HD 2007 2500:

• (behind right side of dash, near right "a" pillar)
• (in i/p harness)
• (left front of engine compt) powertrain control module
• (on left front body mount) g110
• +5v ref
• 2-hi ind
• 2wd
• 4 hi
• 4 lo
• 4-hi ind
• 4-lo ind
• 4wd fuse 15a
• 4wd indicator lamp
• 4wd lo sig
• 4wd sw sig
• 8s8
• Awd
• Awd ind
• Axle ctrl
• Axle sw sig
• Battery
• Brake control
• Class ii data
• Ctrl
• Data link connector (under left side of dash)
• Encoder
• Encoder low
• Encoder sig
• Except 8s8
• Front axle actuator (on front axle)
• Front propshaft speed sensor (on left front side of transfer case)
• Ft shaft hi
• Ft shaft lo
• G200
• G203 (behind left side of dash, near left "a" pillar)
• Gnd
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• I/p relay block (under c1
• Ign e fuse 10a
• Illumination
• Instrument panel cluster
• Interior lights system
• Left side of dash)
• Lock sol ctrl
• Logic
• Motor ctrl a
• Motor ctrl b
• Neutral ind
• Pnk
• Rear propshaft speed sensor (on transfer case extension housing)
• Red
• Rr shaft hi
• Rr shaft lo
• S202
• S214 (in i/p harness)
• Seo ign fuse 10a
• Shift motor
• Splice pack sp205 (in i/p harness)
• Tan
• Transfer case encoder motor (left side of transfer case)
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch
• Trec fuse 30a
• Underhood fuse block (left side of engine compt)

6.0L VIN N, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN N, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500:

• (in engine harness) s165
• (w/ allison transmission)
• 4wd fuse 15a
• 4wd indicator lamp
• 8s8
• Data link connector (under left side of dash below steering column)
• Diesel (ecm)
• E2 c1
• Electronic brake control module (on left side of inner frame)
• Except 8s8
• Front axle actuator (on front axle)
• G110 (on left front body mount)
• Gas (pcm)
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Ign e fuse 10a
• Instrument panel cluster
• Logic
• Pnk
• Powertrain control module (gas engines) or engine control module (diesel) (left front of engine compt)
• Seo ign fuse 10a
• Splice pack sp205 (in i/p harn)
• Transfer case shift control switch (on top of transfer case)
• Transmission control module (w/ allison trans) (left front of engine compt)
• Underhood fuse block (left side of engine compt)

6.0L VIN U

6.0L VIN U, A/T Wiring Diagram, 4L60-E for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN U, A/T Wiring Diagram, 4L60-E for GMC Sierra Classic HD 2007 2500:

• (behind left side of dash) g203
• (left rear of engine compt) throttle actuator control module
• (not used)
• (right rear of engine block) g103
• 1-2 shift solenoid
• 1-2 ss
• 2-3 shift solenoid
• 2-3 ss
• 3-2 shift solenoid
• 3-2 ss
• 4wd low
• 8s8
• A/t fluid pressure manual valve position switch
• Automatic transmission (4l60-e)
• B10
• B11
• B12
• Body control module (lower left side of dash, below steering column)
• Brk fuse 10a
• Brk sw
• C12
• Cls 2 data
• Data link connector (under left side of dash, below steering column)
• E11
• Ect sig
• Engine coolant temperature sensor (front side of left cylinder head)
• Except 8s8
• Fluid temp sensor
• Frt axle sw
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Hot in run, acc & start
• I/p fuse block (lower left side of dash)
• I/p relay block (near left kick panel)
• Ign
• Ign 0 fuse 10a
• Instrument panel cluster (ipc)
• Ipc/dic fuse 10a
• Lo ref
• Malfunction indicator lamp
• Mil ctrl
• P/n
• Park/neutral position switch (left side of transmission)
• Pc sol hi
• Pc sol lo
• Pcm 1 fuse 15a
• Pcm b fuse 20a
• Pnk
• Power distribution system
• Powertrain control module (left front of engine compt)
• Press ctrl solenoid
• Prnd a
• Prnd b
• Prnd c
• Prnd p
• Range b
• Range c
• Red
• Red a
• Red b
• Rev
• S103
• S125
• S217
• Sens gnd
• Seo b1 fuse 15a
• Serial data
• Splice pack sp205 (in i/p harness)
• Stoplight switch (top of brake pedal bracket)
• Tan
• Tcc pwm
• Tcc pwm solenoid
• Tcc sol
• Tcc solenoid
• Tft sens sig
• Tow/haul switch
• Trans rng a
• Transfer case circuit (4wd)
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (2wd: right rear of transmission) (4wd: left side of transfer case)
• Vss hi
• Vss lo

6.0L VIN U, A/T Wiring Diagram, 4L80-E for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN U, A/T Wiring Diagram, 4L80-E for GMC Sierra Classic HD 2007 2500:

• (behind left side of dash) g203
• (not used)
• (right rear of engine block) g103
• 1-2 shift solenoid
• 1-2 ss
• 2-3 shift solenoid
• 2-3 ss
• 4wd low
• A/t fluid pressure manual manual valve position switch
• At iss hi
• At iss lo
• Automatic transmission (4l80-e)
• Automatic transmission input shaft speed sensor (in automatic transmission)
• B10
• B11
• B12
• Body control module (lower left side of dash, below steering column)
• Brake fuse 10a
• Brk sw
• C12
• Cls 2 data
• Data link connector (under left side of dash, below steering column)
• E11
• Ect sig
• Engine coolant temperature sensor (front side of left cylinder head)
• Except seo
• Fluid temp sensor
• Gnd
• Hot at all times
• Hot in run
• Hot in run & start
• Hot in run, acc & start
• I/p fuse block (lower left side of dash)
• I/p relay block (near left kick panel)
• Ign
• Ign0 fuse 10a
• Instrument panel cluster (ipc)
• Ipc/dic fuse 10a
• Lo ref
• Malfunction indicator lamp
• Mil ctrl
• P/n
• Park/neutral position switch (left side of transmission)
• Pc sol hi
• Pc sol lo
• Pcm 1 fuse 15a
• Pcm b fuse 20a
• Pnk
• Power distribution system
• Powertrain control module (left front of engine compt)
• Press ctrl solenoid
• Prnd a
• Prnd b
• Prnd c
• Prnd p
• Range b
• Range c
• Red
• Red a
• Red b
• Rev
• S103
• S117
• S125
• Sens gnd
• Seo
• Seo b1 fuse 15a
• Serial data
• Splice pack sp205 (in i/p harness)
• Stoplight switch (top of brake pedal bracket)
• Tcc pwm
• Tcc pwm solenoid
• Tft sens sig
• Throttle actuator control module (left rear of engine compt)
• Tow/ haul
• Tow/haul switch
• Trans rng a
• Transfer case circuit (4wd)
• Underhood fuse block (left side of engine c2 compt)
• Underhood fuse block (left side of engine compt)
• Vehicle speed sensor (2wd: left rear of transmission) (4wd: left side of transfer case)
• Vss hi
• Vss lo

6.0L VIN U, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN U, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Sierra Classic HD 2007 2500:

• (behind right side of dash, near right "a" pillar)
• (in i/p harness)
• (left front of engine compt) powertrain control module
• (on left front body mount) g110
• +5v ref
• 2-hi ind
• 2wd
• 4 hi
• 4 lo
• 4-hi ind
• 4-lo ind
• 4wd fuse 15a
• 4wd indicator lamp
• 4wd lo sig
• 4wd sw sig
• 8s8
• Awd
• Awd ind
• Axle ctrl
• Axle sw sig
• Battery
• Brake control
• Class ii data
• Ctrl
• Data link connector (under left side of dash)
• Encoder
• Encoder low
• Encoder sig
• Except 8s8
• Front axle actuator (on front axle)
• Front propshaft speed sensor (on left front side of transfer case)
• Ft shaft hi
• Ft shaft lo
• G200
• G203 (behind left side of dash, near left "a" pillar)
• Gnd
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• I/p relay block (under c1
• Ign e fuse 10a
• Illumination
• Instrument panel cluster
• Interior lights system
• Left side of dash)
• Lock sol ctrl
• Logic
• Motor ctrl a
• Motor ctrl b
• Neutral ind
• Pnk
• Rear propshaft speed sensor (on transfer case extension housing)
• Red
• Rr shaft hi
• Rr shaft lo
• S202
• S214 (in i/p harness)
• Seo ign fuse 10a
• Shift motor
• Splice pack sp205 (in i/p harness)
• Tan
• Transfer case encoder motor (left side of transfer case)
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch
• Trec fuse 30a
• Underhood fuse block (left side of engine compt)

6.0L VIN U, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500

List of elements for 6.0L VIN U, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500:

• (in engine harness) s165
• (w/ allison transmission)
• 4wd fuse 15a
• 4wd indicator lamp
• 8s8
• Data link connector (under left side of dash below steering column)
• Diesel (ecm)
• E2 c1
• Electronic brake control module (on left side of inner frame)
• Except 8s8
• Front axle actuator (on front axle)
• G110 (on left front body mount)
• Gas (pcm)
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Ign e fuse 10a
• Instrument panel cluster
• Logic
• Pnk
• Powertrain control module (gas engines) or engine control module (diesel) (left front of engine compt)
• Seo ign fuse 10a
• Splice pack sp205 (in i/p harn)
• Transfer case shift control switch (on top of transfer case)
• Transmission control module (w/ allison trans) (left front of engine compt)
• Underhood fuse block (left side of engine compt)

6.6L VIN 2

6.6L VIN 2, A/T Wiring Diagram (1 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN 2, A/T Wiring Diagram (1 of 2) for GMC Sierra Classic HD 2007 2500:

• (left front of engine compt) transmission control module
• (right rear of engine block) g102
• (right side of engine block) g102
• 4wd low sig
• A/t iss sig high
• A/t iss sig low
• Allison transmission
• Automatic transmission shift lever
• Brake sig
• Computer data lines system
• Crank volt
• Crnk fuse 10a
• Data bus h
• Data bus l
• Dr shift req sig
• Driver shift request switch
• E11
• F10
• Fld press sw sig 1
• Fld press sw sig 2
• Fld press sw sig 3
• Fld press sw sig 4
• Grd
• Hot at all times
• Hot in run
• Hot in run acc & start
• Hot in start
• Hsd1 volt
• Hsd2 volt 2
• I/p fuse block (lower left side of dash)
• Ign 0 fuse 10a
• Ign 0 volt
• Main press solenoid
• Mod main
• Nca
• Pcs1
• Pcs1 low
• Pcs2
• Pnk
• Power distribution system
• Press control sole 2
• Pto sig
• Range sw sig a
• Red
• S103
• S125
• S136
• Serial data
• Ss1 low
• Ss2 low
• Ss3 low
• Stoplamp switch (on brake pedal bracket)
• Tan
• Tcc pcs low
• Tcc psc
• Tcm b fuse 10a
• Tft sensor return
• Tft sensor sig
• Tr sw sig b
• Tr sw sig c
• Tr sw sig p
• Transfer case circuit (4wd)
• Turb speed sw
• Turb speed sw sig
• Underhood fuse block (left side of engine compt)
• Vss sig high
• Vss sig low

6.6L VIN 2, A/T Wiring Diagram (2 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN 2, A/T Wiring Diagram (2 of 2) for GMC Sierra Classic HD 2007 2500:

• (in engine harness) s164
• (left front of engine compt) engine control module
• (near left kick panel) i/p relay block
• (right rear of engine block) g103
• 8s8
• Allison transmission
• Automatic transmission input speed sensor (in automatic transmission)
• Automatic transmission turbine speed sensor (in upper left of transmission)
• B11
• B12
• Body control module (lower left side of dash, below steering column)
• C12
• C12 c1
• C5 c1
• Can data h
• Can data l
• Class 2 serial data
• Computer data lines system
• Data link connector (under left side of dash, below steering column)
• E4 c1
• Engine controls system
• Except 8s8
• F7 c1
• G203 (behind left side of dash)
• Ground
• Hot at all times
• Ignition
• Instrument panel cluster (ipc)
• Internal mode switch
• Ipc/dic fuse 10a
• Malfunction indicator lamp
• Mil control
• P/n
• Park/neutral sig
• Pnk
• Power distribution system
• Pressure switch manifold
• Pto status
• Red
• S103
• S135
• S217
• Seo b1 fuse 15a
• Signal high - front
• Splice pack sp205 (in i/p harness)
• Tan
• Tan e
• Tft sensor
• Tow/haul switch
• Underhood fuse block (left side of engine compt) battery)
• Vehicle speed sensor (2wd: left rear of transmission) (4wd: left side of transfer case)

6.6L VIN 2, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN 2, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500:

• (in engine harness) s165
• (w/ allison transmission)
• 4wd fuse 15a
• 4wd indicator lamp
• 8s8
• Data link connector (under left side of dash below steering column)
• Diesel (ecm)
• E2 c1
• Electronic brake control module (on left side of inner frame)
• Except 8s8
• Front axle actuator (on front axle)
• G110 (on left front body mount)
• Gas (pcm)
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Ign e fuse 10a
• Instrument panel cluster
• Logic
• Pnk
• Powertrain control module (gas engines) or engine control module (diesel) (left front of engine compt)
• Seo ign fuse 10a
• Splice pack sp205 (in i/p harn)
• Transfer case shift control switch (on top of transfer case)
• Transmission control module (w/ allison trans) (left front of engine compt)
• Underhood fuse block (left side of engine compt)

6.6L VIN 2, Transfer Case Wiring Diagram, Selectable for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN 2, Transfer Case Wiring Diagram, Selectable for GMC Sierra Classic HD 2007 2500:

• (behind right side of dash, near right "a" pillar)
• (left front of engine compt) gasoline: powertrain control module diesel: engine control module
• (on left front body mount) g110
• +5v ref
• 2-hi ind
• 2wd
• 4 hi
• 4 lo
• 4-hi ind
• 4-lo ind
• 4wd fuse 15a
• 4wd indicator lamp
• 4wd lo sig
• 4wd sw sig
• 8s8
• Awd
• Axle ctrl
• Axle sw sig
• Battery
• Class ii data
• Ctrl
• Data link connector (under left side of dash)
• Diesel (ecm)
• Encoder
• Encoder low
• Encoder sig
• Except 8s8
• Front axle actuator (on front axle)
• Ft shaft hi
• Ft shaft lo
• G200
• G203 (behind left side of dash, near left "a" pillar)
• Gas (pcm)
• Gnd
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• I/p relay block (under c1
• Ign e fuse 10a
• Illumination
• Instrument panel cluster
• Interior lights system
• Left side of dash)
• Lock sol ctrl
• Logic
• Motor ctrl a
• Motor ctrl b
• Neutral ind
• Pnk
• Red
• Rr shaft hi
• Rr shaft lo
• S202
• Seo ign fuse 10a
• Shift motor
• Splice pack sp205 (in i/p harness)
• Transfer case encoder motor (left side of transfer case)
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch
• Transmission system
• Trec fuse 30a
• Underhood fuse block (left side of engine compt)

6.6L VIN D

6.6L VIN D, A/T Wiring Diagram (1 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN D, A/T Wiring Diagram (1 of 2) for GMC Sierra Classic HD 2007 2500:

• (left front of engine compt) transmission control module
• (right rear of engine block) g102
• (right side of engine block) g102
• 4wd low sig
• A/t iss sig high
• A/t iss sig low
• Allison transmission
• Automatic transmission shift lever
• Brake sig
• Computer data lines system
• Crank volt
• Crnk fuse 10a
• Data bus h
• Data bus l
• Dr shift req sig
• Driver shift request switch
• E11
• F10
• Fld press sw sig 1
• Fld press sw sig 2
• Fld press sw sig 3
• Fld press sw sig 4
• Grd
• Hot at all times
• Hot in run
• Hot in run acc & start
• Hot in start
• Hsd1 volt
• Hsd2 volt 2
• I/p fuse block (lower left side of dash)
• Ign 0 fuse 10a
• Ign 0 volt
• Main press solenoid
• Mod main
• Nca
• Pcs1
• Pcs1 low
• Pcs2
• Pnk
• Power distribution system
• Press control sole 2
• Pto sig
• Range sw sig a
• Red
• S103
• S125
• S136
• Serial data
• Ss1 low
• Ss2 low
• Ss3 low
• Stoplamp switch (on brake pedal bracket)
• Tan
• Tcc pcs low
• Tcc psc
• Tcm b fuse 10a
• Tft sensor return
• Tft sensor sig
• Tr sw sig b
• Tr sw sig c
• Tr sw sig p
• Transfer case circuit (4wd)
• Turb speed sw
• Turb speed sw sig
• Underhood fuse block (left side of engine compt)
• Vss sig high
• Vss sig low

6.6L VIN D, A/T Wiring Diagram (2 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN D, A/T Wiring Diagram (2 of 2) for GMC Sierra Classic HD 2007 2500:

• (in engine harness) s164
• (left front of engine compt) engine control module
• (near left kick panel) i/p relay block
• (right rear of engine block) g103
• 8s8
• Allison transmission
• Automatic transmission input speed sensor (in automatic transmission)
• Automatic transmission turbine speed sensor (in upper left of transmission)
• B11
• B12
• Body control module (lower left side of dash, below steering column)
• C12
• C12 c1
• C5 c1
• Can data h
• Can data l
• Class 2 serial data
• Computer data lines system
• Data link connector (under left side of dash, below steering column)
• E4 c1
• Engine controls system
• Except 8s8
• F7 c1
• G203 (behind left side of dash)
• Ground
• Hot at all times
• Ignition
• Instrument panel cluster (ipc)
• Internal mode switch
• Ipc/dic fuse 10a
• Malfunction indicator lamp
• Mil control
• P/n
• Park/neutral sig
• Pnk
• Power distribution system
• Pressure switch manifold
• Pto status
• Red
• S103
• S135
• S217
• Seo b1 fuse 15a
• Signal high - front
• Splice pack sp205 (in i/p harness)
• Tan
• Tan e
• Tft sensor
• Tow/haul switch
• Underhood fuse block (left side of engine compt) battery)
• Vehicle speed sensor (2wd: left rear of transmission) (4wd: left side of transfer case)

6.6L VIN D, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN D, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500:

• (in engine harness) s165
• (w/ allison transmission)
• 4wd fuse 15a
• 4wd indicator lamp
• 8s8
• Data link connector (under left side of dash below steering column)
• Diesel (ecm)
• E2 c1
• Electronic brake control module (on left side of inner frame)
• Except 8s8
• Front axle actuator (on front axle)
• G110 (on left front body mount)
• Gas (pcm)
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Ign e fuse 10a
• Instrument panel cluster
• Logic
• Pnk
• Powertrain control module (gas engines) or engine control module (diesel) (left front of engine compt)
• Seo ign fuse 10a
• Splice pack sp205 (in i/p harn)
• Transfer case shift control switch (on top of transfer case)
• Transmission control module (w/ allison trans) (left front of engine compt)
• Underhood fuse block (left side of engine compt)

6.6L VIN D, Transfer Case Wiring Diagram, Selectable for GMC Sierra Classic HD 2007 2500

List of elements for 6.6L VIN D, Transfer Case Wiring Diagram, Selectable for GMC Sierra Classic HD 2007 2500:

• (behind right side of dash, near right "a" pillar)
• (left front of engine compt) gasoline: powertrain control module diesel: engine control module
• (on left front body mount) g110
• +5v ref
• 2-hi ind
• 2wd
• 4 hi
• 4 lo
• 4-hi ind
• 4-lo ind
• 4wd fuse 15a
• 4wd indicator lamp
• 4wd lo sig
• 4wd sw sig
• 8s8
• Awd
• Axle ctrl
• Axle sw sig
• Battery
• Class ii data
• Ctrl
• Data link connector (under left side of dash)
• Diesel (ecm)
• Encoder
• Encoder low
• Encoder sig
• Except 8s8
• Front axle actuator (on front axle)
• Ft shaft hi
• Ft shaft lo
• G200
• G203 (behind left side of dash, near left "a" pillar)
• Gas (pcm)
• Gnd
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• I/p relay block (under c1
• Ign e fuse 10a
• Illumination
• Instrument panel cluster
• Interior lights system
• Left side of dash)
• Lock sol ctrl
• Logic
• Motor ctrl a
• Motor ctrl b
• Neutral ind
• Pnk
• Red
• Rr shaft hi
• Rr shaft lo
• S202
• Seo ign fuse 10a
• Shift motor
• Splice pack sp205 (in i/p harness)
• Transfer case encoder motor (left side of transfer case)
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch
• Transmission system
• Trec fuse 30a
• Underhood fuse block (left side of engine compt)

8.1L VIN G

8.1L VIN G, A/T Wiring Diagram (1 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for 8.1L VIN G, A/T Wiring Diagram (1 of 2) for GMC Sierra Classic HD 2007 2500:

• (left front of engine compt) module transmission control
• (right rear of engine block) g103
• 4wd low sig
• A/t iss sig high
• A/t iss sig low
• Allison transmission
• Brake sig
• Brk fuse 10a
• Computer data lines system
• Crank volt
• Crnk fuse 10a
• Data bus h
• Data bus l
• Dr shift req sig
• Driver shift automatic request transmission switch shift lever
• E11
• F10
• Fld press sw sig 1
• Fld press sw sig 2
• Fld press sw sig 3
• Fld press sw sig 4
• Grd
• Hot at all times
• Hot in run
• Hot in run acc & start
• Hot in start
• Hsd1 volt
• Hsd2 volt 2
• I/p fuse block (lower left side of dash)
• Ign 0 fuse 10a
• Ign 0 volt
• Main
• Main press solenoid
• Malfunc ind lamp
• Mod main
• Nca
• Pcs1
• Pcs1 low
• Pnk
• Power distribution system
• Press control sole 2
• Pto sig
• Range sw sig a
• Red
• Req torque
• S125
• S132
• S136
• Serial data
• Ss1 low
• Ss2 low
• Ss3 low
• Stoplamp switch (on brake pedal bracket)
• Tan
• Tcc pcs low
• Tcc psc
• Tcm b fuse 10a
• Tft sensor return
• Tft sensor sig
• Torque sig
• Tr sw sig b
• Tr sw sig c
• Tr sw sig p
• Transfer case circuit (4wd)
• Turb speed sw
• Turb speed sw sig
• Underhood fuse block (left side of engine compt)
• Vss sig high
• Vss sig low

8.1L VIN G, A/T Wiring Diagram (2 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for 8.1L VIN G, A/T Wiring Diagram (2 of 2) for GMC Sierra Classic HD 2007 2500:

• (in engine harness)
• (left front of engine compt) powertrain control module
• (near left kick panel) i/p relay block
• (right rear of engine block) g103
• 8s8
• Allison transmission
• Automatic transmission input speed sensor (in automatic transmission)
• Automatic transmission turbine speed sensor (in upper left of transmission)
• B11
• B12
• Body control module (lower left side of dash)
• C12 c1
• C2 c12
• C5 c1
• Class 2 serial data
• Data link connector (under left side of dash)
• Delivered torque sig
• E4 c1
• Engine controls system
• Except 8s8
• F7 c1
• G203 (behind left side of dash)
• Ground
• Hot at all times
• Ignition
• Instrument panel cluster (ipc)
• Internal mode switch
• Ipc/dic fuse 10a
• Malfunction indicator lamp
• Mil control
• P/n
• Park/neutral sig
• Pnk
• Power distribution system
• Pressure switch manifold
• Pto status
• Red
• Requested torque sig
• S103
• S135
• S164
• S217
• Seo b1 fuse 15a
• Signal high - front
• Splice pack sp205 (in i/p harness)
• Tan
• Tan e
• Tft sensor
• Torque response sig
• Tow/haul switch
• Trans mil request
• Underhood fuse block (left side of engine compt) battery)
• Vehicle speed sensor (2wd: left rear of transmission) (4wd: left side of transfer case)

8.1L VIN G, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500

List of elements for 8.1L VIN G, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Sierra Classic HD 2007 2500:

• (in engine harness) s165
• (w/ allison transmission)
• 4wd fuse 15a
• 4wd indicator lamp
• 8s8
• Data link connector (under left side of dash below steering column)
• Diesel (ecm)
• E2 c1
• Electronic brake control module (on left side of inner frame)
• Except 8s8
• Front axle actuator (on front axle)
• G110 (on left front body mount)
• Gas (pcm)
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• Ign e fuse 10a
• Instrument panel cluster
• Logic
• Pnk
• Powertrain control module (gas engines) or engine control module (diesel) (left front of engine compt)
• Seo ign fuse 10a
• Splice pack sp205 (in i/p harn)
• Transfer case shift control switch (on top of transfer case)
• Transmission control module (w/ allison trans) (left front of engine compt)
• Underhood fuse block (left side of engine compt)

8.1L VIN G, Transfer Case Wiring Diagram, Selectable for GMC Sierra Classic HD 2007 2500

List of elements for 8.1L VIN G, Transfer Case Wiring Diagram, Selectable for GMC Sierra Classic HD 2007 2500:

• (behind right side of dash, near right "a" pillar)
• (left front of engine compt) gasoline: powertrain control module diesel: engine control module
• (on left front body mount) g110
• +5v ref
• 2-hi ind
• 2wd
• 4 hi
• 4 lo
• 4-hi ind
• 4-lo ind
• 4wd fuse 15a
• 4wd indicator lamp
• 4wd lo sig
• 4wd sw sig
• 8s8
• Awd
• Axle ctrl
• Axle sw sig
• Battery
• Class ii data
• Ctrl
• Data link connector (under left side of dash)
• Diesel (ecm)
• Encoder
• Encoder low
• Encoder sig
• Except 8s8
• Front axle actuator (on front axle)
• Ft shaft hi
• Ft shaft lo
• G200
• G203 (behind left side of dash, near left "a" pillar)
• Gas (pcm)
• Gnd
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse block (lower left side of dash)
• I/p relay block (under c1
• Ign e fuse 10a
• Illumination
• Instrument panel cluster
• Interior lights system
• Left side of dash)
• Lock sol ctrl
• Logic
• Motor ctrl a
• Motor ctrl b
• Neutral ind
• Pnk
• Red
• Rr shaft hi
• Rr shaft lo
• S202
• Seo ign fuse 10a
• Shift motor
• Splice pack sp205 (in i/p harness)
• Transfer case encoder motor (left side of transfer case)
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch
• Transmission system
• Trec fuse 30a
• Underhood fuse block (left side of engine compt)

WARNING SYSTEMS

Chime Wiring Diagram (1 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for Chime Wiring Diagram (1 of 2) for GMC Sierra Classic HD 2007 2500:

• (behind left side of dash, near left "a" pillar) g203
• (on left "b" pillar) g305
• (on right "b" pillar) g306
• 5v reference
• A12
• Accessory voltage
• Anl/drl defeat
• Auto
• B11
• B12
• Battery
• Body control module (bcm) (on lower left side of dash, below steering column)
• Crew cab only
• D12
• Dimming input
• Dimming return
• E11
• E12
• Electronic power steering (hybrid)
• Exc hybrid
• G203 (behind left side of dash, near left "a" pillar)
• Ground
• Ground distribution system
• Head
• Headlamp switch
• Headlamps on signal
• Hot at all times
• Hot in acc & run
• Hot in acc, run & start
• Hot in run & start
• Hybrid
• I/p fuse block (on lower left side of dash)
• I/p relay block (near left kick panel)
• Ignition 0 voltage
• Ignition 1 voltage
• Ignition key alarm switch
• Key in ignition switch
• Left front door ajar sw
• Left rear door ajar sw
• Left rear door latch assembly
• Park
• Park brake sw signal
• Park brake switch (part of park brake assembly)
• Park lamp on signal
• Pnk
• Power distribution system
• Right front door ajar sw
• Right rear door ajar sw
• Right rear door latch assembly
• S217
• Serial data
• Tan
• Tan b
• Tbc 2a fuse 15a
• Tbc 2b fuse 15a
• Tbc 2c fuse 15a
• Tbc accy fuse 10a
• Tbc batt fuse 10a
• Tbc ign 0 fuse 10a
• Tbc ign 1 fuse 10a
• Underhood fuse block (at left side of engine compartment)

Chime Wiring Diagram (2 of 2) for GMC Sierra Classic HD 2007 2500

List of elements for Chime Wiring Diagram (2 of 2) for GMC Sierra Classic HD 2007 2500:

• (behind right side of dash, near right "a" pillar) g200
• Base
• Computer data lines system
• Data link connector (dlc) (partial) (under left side of dash, below steering column)
• Door ajar switch
• Driver door latch assembly
• Driver door module (ddm) (in driver's door)
• Driver seat belt switch
• Exterior lights system
• Front passenger door latch assembly
• Front passenger door module (fpdm) (in right front door)
• Gasoline diesel
• Ground distribution system
• I/p fuse block (on lower left side of dash)
• I/p junction block (right side of dash, behind access panel)
• Ign
• Inflatable restraint sensing & diagnostic module (sdm) (under left front seat)
• Instrument panel cluster (ipc)
• Left door ajar sw
• Left seat belt
• Left turn
• Logic
• Low reference
• Pnk
• Powertrain control module (pcm)/ engine control module (ecm) (on left front of engine compartment)
• Radio
• Right turn
• Seat belt
• Serial data
• Splice pack sp205 (in i/p harness)
• Tan
• W/convenience package comfort & decor level 3
• W/memory seats

Tire Pressure Monitoring Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Tire Pressure Monitoring Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (behind left side of dash, near left "a" pillar) g203
• (not used)
• Class 2 (tpm)
• Class 2 serial data
• Computer data lines system
• Driver information center (dic)
• Ecc/tpm fuse 10a
• F11
• Grd
• Hot at all times
• I/p fuse block (on lower left side of dash)
• I/p relay block (near left kick panel)
• Ign
• Instrument panel cluster (ipc)
• Left front tire pressure monitor sensor
• Left rear tire pressure monitor sensor
• Message request
• Right front tire pressure monitor sensor
• Right rear tire pressure monitor sensor
• Solid state
• Spare tire pressure monitor sensor
• Tire pressure ind
• Tire pressure monitor (tpm) module (above brake pedal assembly)

WIPER/WASHER

Wiper/Washer Wiring Diagram for GMC Sierra Classic HD 2007 2500

List of elements for Wiper/Washer Wiring Diagram for GMC Sierra Classic HD 2007 2500:

• (near left "a" pillar) g203
• A10
• Accessory voltage
• Body control module (on lower left side of dash, below steering column)
• Check washer fluid
• G100 (on lower left radiator support)
• G200 (near right "a" pillar)
• Ground
• Hot at all times
• Hot in run and acc
• I/p fuse block (on lower left side of dash)
• Instrument panel cluster
• Low washer fluid ind sig
• Lsd
• Message center
• Mist
• Off
• Pnk
• Pulse
• Red
• S100
• S202
• S217
• Serial data
• Tan
• Turn signal/ multifunction switch
• Underhood fuse block (at left side of engine compt)
• W/s wash fuse 15a
• W/s wash relay
• W/s wiper fuse 25a
• Wash
• Washer fluid level sensor (in washer fluid reservoir) (except 4.3l base)
• Windshield washer fluid pump (on washer fluid reservoir)
• Windshield washer relay cntrl
• Windshield washer switch signal
• Windshield wiper high signal
• Windshield wiper motor module (under windshield cowl, between wiper arms)
• Windshield wiper motor park signal
• Windshield wiper/ washer switch