TRANSMISSION

4.3L VIN X

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

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

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

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

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

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

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

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

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

4.8L VIN V

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

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

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

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

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

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

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

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

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

5.3L VIN B

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

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

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

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

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

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

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

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

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

5.3L VIN T

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

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

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

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

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

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

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

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

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

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

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

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

5.3L VIN Z

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

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

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

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

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

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

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

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

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

6.0L VIN N

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

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

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

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

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

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

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

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

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

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

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

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

6.0L VIN U

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

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

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

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

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

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

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

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

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

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

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

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

6.6L VIN 2

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

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

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

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

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

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

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

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

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

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

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

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

6.6L VIN D

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

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

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

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

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

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

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

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

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

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

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

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

8.1L VIN G

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

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

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

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

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

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

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

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

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

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

Get access to all wiring diagrams of the car

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

(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)