All Wiring Diagrams for GMC Cab & Chassis Sierra 2007 3500

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra 2007 3500

List of elements for Automatic A/C Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Automatic A/C Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Automatic A/C Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Compressor Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Heater Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Manual A/C Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Manual A/C Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Manual A/C Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Anti-Lock Brakes Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Supplemental Brake Assist Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Forced Entry Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Passlock Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Body Control Modules Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Body Control Modules Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Computer Data Lines Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Computer Data Lines Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• 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)

CRUISE CONTROL

6.0L VIN U

6.0L VIN U, Cruise Control Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500

List of elements for 6.0L VIN U, Cruise Control Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN 2, Cruise Control Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN D, Cruise Control Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for 8.1L VIN G, Cruise Control Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Heated Mirrors Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Rear Defogger Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• (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 SUSPENSION

Electronic Suspension Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500

List of elements for Electronic Suspension Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• (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

6.0L VIN U

6.0L VIN U, Engine Performance Wiring Diagram (1 of 5) for GMC Cab & Chassis Sierra 2007 3500

List of elements for 6.0L VIN U, Engine Performance Wiring Diagram (1 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.0L VIN U, Engine Performance Wiring Diagram (2 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.0L VIN U, Engine Performance Wiring Diagram (3 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.0L VIN U, Engine Performance Wiring Diagram (4 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.0L VIN U, Engine Performance Wiring Diagram (5 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (2 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (3 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (4 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (5 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (6 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN D, Engine Performance Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN D, Engine Performance Wiring Diagram (2 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN D, Engine Performance Wiring Diagram (3 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN D, Engine Performance Wiring Diagram (4 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN D, Engine Performance Wiring Diagram (5 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN D, Engine Performance Wiring Diagram (6 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (1 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (2 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (3 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (4 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 8.1L VIN G, Engine Performance Wiring Diagram (5 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Back-up Lamps Wiring Diagram, with Allison Automatic Transmission for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Back-up Lamps Wiring Diagram, without Allison Automatic Transmission for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Exterior Lamps Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Exterior Lamps Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Exterior Lamps Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Ground Distribution Wiring Diagram, Except Hybrid (1 of 4) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Ground Distribution Wiring Diagram, Except Hybrid (2 of 4) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Ground Distribution Wiring Diagram, Except Hybrid (3 of 4) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Ground Distribution Wiring Diagram, Except Hybrid (4 of 4) for GMC Cab & Chassis Sierra 2007 3500:

• (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

HEADLIGHTS

Headlights Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500

List of elements for Headlights Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Horn Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Instrument Cluster Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Instrument Cluster Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Instrument Illumination Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Instrument Illumination Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Instrument Illumination Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Memory Mirrors Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Memory Seat Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Memory Seat Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• (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

6.0L VIN U

6.0L VIN U, Power Distribution Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra 2007 3500

List of elements for 6.0L VIN U, Power Distribution Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.0L VIN U, Power Distribution Wiring Diagram (2 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.0L VIN U, Power Distribution Wiring Diagram (3 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.0L VIN U, Power Distribution Wiring Diagram (4 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.0L VIN U, Power Distribution Wiring Diagram (5 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.0L VIN U, Power Distribution Wiring Diagram (6 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN 2, Power Distribution Wiring Diagram (1 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN 2, Power Distribution Wiring Diagram (2 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN 2, Power Distribution Wiring Diagram (3 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN 2, Power Distribution Wiring Diagram (4 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN 2, Power Distribution Wiring Diagram (5 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN D, Power Distribution Wiring Diagram (1 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN D, Power Distribution Wiring Diagram (2 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN D, Power Distribution Wiring Diagram (3 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN D, Power Distribution Wiring Diagram (4 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN D, Power Distribution Wiring Diagram (5 of 5) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 8.1L VIN G, Power Distribution Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 8.1L VIN G, Power Distribution Wiring Diagram (2 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 8.1L VIN G, Power Distribution Wiring Diagram (3 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 8.1L VIN G, Power Distribution Wiring Diagram (4 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 8.1L VIN G, Power Distribution Wiring Diagram (5 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 8.1L VIN G, Power Distribution Wiring Diagram (6 of 6) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Power Door Locks Wiring Diagram, Base for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Power Door Locks Wiring Diagram, Up Level (1 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Power Door Locks Wiring Diagram, Up Level (2 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Electrochromic Mirror Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Power Mirrors Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Driver Seat Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Heated Seats Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Passenger Power Seat Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Passenger"s Lumbar Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Power Top/Sunroof Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Power Windows Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Base Radio Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Mid-Line Radio Wiring Diagram, with Rear Seat Audio (1 of 4) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Mid-Line Radio Wiring Diagram, with Rear Seat Audio (2 of 4) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Mid-Line Radio Wiring Diagram, with Rear Seat Audio (3 of 4) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Mid-Line Radio Wiring Diagram, with Rear Seat Audio (4 of 4) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Mid-Line Radio Wiring Diagram, without Rear Seat Audio (1 of 4) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Mid-Line Radio Wiring Diagram, without Rear Seat Audio (2 of 4) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Mid-Line Radio Wiring Diagram, without Rear Seat Audio (3 of 4) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Mid-Line Radio Wiring Diagram, without Rear Seat Audio (4 of 4) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (1 of 3) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (2 of 3) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (3 of 3) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Premium Sound Radio Wiring Diagram, with CD (1 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Premium Sound Radio Wiring Diagram, with CD (2 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Premium Sound Radio Wiring Diagram, with Digital Radio Receiver (1 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Premium Sound Radio Wiring Diagram, with Digital Radio Receiver (2 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• 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 Cab & Chassis Sierra 2007 3500

List of elements for Shift Interlock Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• 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

Starting Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500

List of elements for Starting Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.0L VIN U, Charging Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN 2, Charging Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN D, Charging Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 8.1L VIN G, Charging Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• (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

SUPPLEMENTAL RESTRAINTS

Supplemental Restraints Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2007 3500

List of elements for Supplemental Restraints Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• 1362 (or 353)
• 2306 (or 371)
• Airbag fuse 15a
• B tan
• Bottom of radiator support)
• C10
• Class 2 serial data
• Control
• Except 10 series & crew cab
• G200 (behind right side of dash, near right "a" pillar)
• G304 (under right front seat)
• Ground
• High control
• Hot in run or start
• Hvy
• I/p junction block (right side of dash behind access panel)
• I/p relay block (near left kick panel)
• Ignition 1
• Ignition 1 voltage
• Inflatable restraint i/p module (behind right side of dash)
• Inflatable restraint i/p module disable switch
• Inflatable restraint sensing & diagnostic module (under left front seat)
• Inflatable restraint steering wheel module
• Inflatable restraint steering wheel module coil
• Key switch
• Left inflatable restraint front end sensor (on left front of vehicle)
• Left signal
• Logic
• Low control
• Low reference
• Nca
• Off
• Others
• Pnk
• Red
• Red (or pnk)
• Right front of vehicle
• Right inflatable restraint front end sensor (w/o hvy) inflatable restraint front end sensor (hvy)
• Right inflatable restraint side impact sensor
• Right signal
• Right voltage
• S205
• Shorting bar
• Signal
• Stage 1
• Stage 2
• Tan
• Twisted pair wires
• Underhood fuse block (at left side of eng compt, near battery)
• W/ front passenger/ child presence detector

Supplemental Restraints Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2007 3500

List of elements for Supplemental Restraints Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• Air bag
• C10
• Class 2 serial data
• Data link connector (lower left side of dash)
• Driver seat belt switch
• Front passenger seat belt switch
• G304 (under right front seat)
• Ground
• I/p relay block (near left kick panel)
• Ign
• Ignition 1 voltage
• Inflatable restraint passenger air bag on/off indicator
• Inflatable restraint passenger presence system (pps) module (under front passenger seat)
• Inflatable restraint passenger presence system sensor
• Inflatable restraint passenger seat belt tension retractor sensor
• Inside rearview mirror
• Instrument panel cluster
• Ipc class 2 serial data
• Left inflatable restraint seat position switch
• Memory system
• Off
• Pass air bag off ind ctrl
• Pass air bag on ind ctrl
• Pass seat belt tens 5v ref
• Pass seat belt tens lo ref
• Pass seat belt tens sig
• Pnk
• Pps sens 5v ref
• Pps sens lo ref
• Pps sens sig
• Red
• Right inflatable restraint seat position switch
• Serial data
• Splice pack sp205 (in i/p harness)
• Tan

TRANSMISSION

6.0L VIN U

6.0L VIN U, A/T Wiring Diagram, 4L60-E for GMC Cab & Chassis Sierra 2007 3500

List of elements for 6.0L VIN U, A/T Wiring Diagram, 4L60-E for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.0L VIN U, A/T Wiring Diagram, 4L80-E for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.0L VIN U, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.0L VIN U, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN 2, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN 2, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN 2, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN 2, Transfer Case Wiring Diagram, Selectable for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN D, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN D, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN D, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 6.6L VIN D, Transfer Case Wiring Diagram, Selectable for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 8.1L VIN G, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 8.1L VIN G, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 8.1L VIN G, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for 8.1L VIN G, Transfer Case Wiring Diagram, Selectable for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Chime Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Chime Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Tire Pressure Monitoring Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• (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 Cab & Chassis Sierra 2007 3500

List of elements for Wiper/Washer Wiring Diagram for GMC Cab & Chassis Sierra 2007 3500:

• (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