STARTING/CHARGING – GMC Sierra Classic 2500 HD 2007 – SYSTEM WIRING DIAGRAMS

STARTING/CHARGING

Charging Wiring Diagram for GMC Sierra Classic 2500 HD 2007

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Starting Wiring Diagram for GMC Sierra Classic 2500 HD 2007

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

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

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

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

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

6.0L VIN U

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

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

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

6.6L VIN 2

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

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

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

6.6L VIN D

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

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

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

8.1L VIN G

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

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

• (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