All Wiring Diagrams for GMC Cab & Chassis Sierra HD 2012 3500

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

List of elements for Automatic A/C Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(left side of headliner) front inside air temperature sensor
(lower right side of hvac module) blower motor
(lower right side of hvac module) blower motor control module
(on right front corner of hvac module) g200
4b7
5v ref
A/c ind
A/c on
Air temp
Air tmp
Air tmp sig
Amb air tmp
Ambient air temperature sensor (on left side of radiator support)
Ambient light/sunload sensor assembly (top center of dash)
Auto
B(+)
Batt pos volt
Blwr spd
Colnt lvl
Computer data lines system
Defogger system
Dfrst val
Driver information center (dic) display
End of dash)
Engine coolant level switch (6.6l) (on bottom of surge tank)
Evaporator temperature sensor (on hvac assembly)
Fan dn
Fan up
Fresh air
Frnt dfg
Frt def
Fsh air
G103 (on front of right cylinder head)
G200 (on right front corner of hvac module)
G201 (upper left corner of dash)
Gmlan l
Ground
Ground distribution system
Hvac control module
Ign 3
Instrument panel cluster (ipc)
J106
J203
J206 (in i/p harness, near x200 breakout)
J328
L air tmp
Left i/p junction block (lower left side of dash) x1
Left sunload sensor
Left temp control
Lf sunld
Logic
Low ref
Mode ctrl
Mode dn
Mode up
Mtr spd ctrl
Off
Power distribution system
R air tmp
Rear defog
Rear dfg
Recir
Recir ctrl
Recirc
Recirc pos
Red
Rer def
Rf sunld
Right i/p junction block (in right x4
Right sunload sensor
Right temp control
Serial data
Tan
Temp sens
Upper left air temperature sensor (under upper left side of dash)
Upper right air temperature sensor (under upper right side of dash)
X103
X109

Automatic A/C Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Automatic A/C Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of engine compt, near fan shroud) engine control module (ecm)
(lower left side of dash) body control module (bcm)
(on front of a/c compressor) a/c compressor clutch
(top left rear of engine) (4.3l) g107
4.3l
4a1
4a2
4a3
4a4
4a5
4a6
4b2
4b3
4b5
4b6
5v ref
6.0l
6.6l
6.6l 4.8l, 5.3l & 6.2l
A/c cmprsr fuse 17 (except 6.6l) fuse 16 (6.6l) 10a
A/c cmprsr relay
Clutch rly ctrl
Computer data lines system
Data bus (+)
Data bus (-)
Ect sens sig
Engine coolant temperature (ect) sensor (4.3l: left side of engine) (except 4.3l & 6.6l: on top of engine) (6.6l: top front center of engine)
Engine cooling fan (6.6l) (front center of engine compt)
Except 6.6l
Fan rly ctrl
From pwr/trn relay (diagram 3 of 3)
G102 (except 4.3l & 6.6l) (on lower left front of engine)
G103 (on front of right cylinder head)
Hot at all times
Hvac batt fuse 39 10a (except 6.6l) fuse 36 (6.6l) 10a
Hvac blwr fuse 70 40a
Hvac ign fuse 55 (except 6.6l) fuse 52 (6.6l) 10a
J105
Low ref
Pnk
Pwrtrn rly ctrl
Red
Right i/p junction block (in right end of dash)
Rly ctrl
Rly spd sig
Run/ crnk relay
Sens sig
Spd sig
Tan
Under- hood fuse block (left side of engine compt)
X113

Automatic A/C Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Automatic A/C Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(diesel: left front corner of engine compt) (except diesel: on lower left radiator support)
(in hvac harness) j242
(near compressor, on a/c high pressure hose) a/c refrigerant pressure sensor
87a
Cooling fan diode 1
Cooling fan diode 2
Except 6.0l
Fan cntrl relay
Fan fuse 68 10a
Fan hi relay
Fan lo relay
Fan relay
Fan-1 fuse 60 40a
Fan-2 fuse 62 40a
G100
G103 (on front of right cylinder head)
Gnd
Hot at all times
J100
J101
J105
Left air temperature actuator (bottom left of hvac module)
Left cooling fan (except 6.0l) (left front of engine compt)
Logic
Lower left air temperature sensor (left side of hvac module)
Lower right air temperature sensor (lower left of hvac module)
Mode actuator (left end of hvac module)
Pwr/ trn relay
Recirculation actuator (top right side of hvac module)
Right air temperature actuator (top middle of hvac module)
Right cooling fan (right front of engine compt)
Tan
To a/c comprsr relay (diagram 2 of 3)
Under- hood fuse block (left side of engine compt)

Manual A/C Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Manual A/C Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(4.3l) g107
(4.3l: top left rear of engine) (6.6l: on front of right cylinder head) (except 6.6l & 4.3l: on lower left front of engine)
(6.6l) g103
(lower right side of hvac module) blower motor
(lower right side of hvac module) blower motor control module
4a2
4b7
5v ref
A/c cmprsr fuse 17 (except 6.6l) fuse 16 (6.6l) 10a
A/c cmprsr relay
A/c ind
A/c on
All times
Ambient air temperature sensor (w/o odometer security wiring provision) (on left side of radiator support)
B(+)
Batt pos volt
Blower motor control switch
Blwr spd
Colnt lvl
Computer data lines system
Defogger system
Dfrst val
Engine coolant level switch (6.6l) (on bottom of surge tank)
Evaporator temperature sensor (on hvac assembly)
Fresh air
Frh air
From pwr/trn relay (diagram 3 of 3)
G102 (except 6.6l & 4.3l)
G103 (on front of right cylinder head)
G200 (on right front corner of hvac module)
G201 (upper left corner of dash)
Gmlan l
Ground
Hot at
Hot at all times
Hvac batt fuse 39 (except 6.6l) fuse 36 (6.6l) 10a
Hvac blwr fuse 70 (except 6.6l) fuse 65 (6.6l) 40a
Hvac control module
Hvac ign fuse 55 (except 6.6l) fuse 52 (6.6l) 10a
Ign 3
Interior lights system power distribution
J105
J106
J203
Led cntl
Left i/p junction block (lower left side of dash)
Lo ref
Logic
Low ref
Mode ctrl
Mode switch
Mtr spd ctrl
Pnk
R air tmp
Rear defog
Rear dfg
Recir
Recir ctrl
Recirc
Red
Rer def
Right i/p junction block (in right end of dash) x4
Run/ crnk relay
Sens sig
System
Tan
Temp sens
Temperature control switch
Under- hood fuse block (left side of engine compt)
X103
X109

Manual A/C Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Manual A/C Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(4.3l) g107
(4.3l: top left rear of engine) (6.6l: on front of right cylinder head) (except 6.6l & 4.3l: on lower left front of engine)
(6.6l) g103
(lower left side of dash) body control module (bcm)
(on front of a/c compressor) a/c compressor clutch
4a1
4a4
4a6
4b3
4b5
87a
Cooling fan diode 1
Cooling fan diode 2
Except 6.0l
Fan cntrl relay
Fan lo relay
Fan-1 fuse 60 40a
Fan-2 fuse 62 40a
G100 (diesel: left front corner of engine compt) (except diesel: on lower left radiator support)
G101 (diesel: right front corner of engine compt) (except diesel: on lower right radiator support)
G102 (except 6.6l & 4.3l)
Hi fan relay
Hot at all times
J100
J101
J105
Left cooling fan (left front of engine compt)
Pnk
Pwr/ trn relay
Red
Right cooling fan (right front of engine compt)
Right i/p junction block (in right end of dash)
Rly ctrl
Tan
Under- hood fuse block (left side of engine compt)

Manual A/C Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Manual A/C Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(6.6l)
(near compressor, on a/c high pressure hose) a/c refrigerant pressure sensor
(not used)
4.3l
4.8l, 5.3l, & 6.2l
5v ref
6.0l
6.6l
Air temperature actuator (top middle of hvac module)
Clutch rly ctrl
Computer data lines system
Data bus (+)
Data bus (-)
Driver information center (dic) display
Ect sens sig
Engine control module (ecm) (left front of engine compt, near fan shroud)
Engine coolant temperature (ect) sensor (4.3l: left side of engine) (except 4.3l & 6.6l: on top of engine) (6.6l: top front center of engine)
Engine cooling fan (6.6l) (front center of engine compt)
Except 6.0l
Except 6.6l
Fan fuse 68 10a
Fan relay
Fan rly ctrl
G103 (on front of right cylinder head)
Gnd
Hot at all times
Instrument panel cluster (ipc)
J105
Logic
Low ref
Mode actuator (left end of hvac module)
Pwrtrn rly ctrl
Recirculation actuator (front a/c) (top right side of hvac module)
Rly spd sig
Sens sig
Serial data
Spd sig
Tan
Underhood fuse block (left side of engine compt)
X113
X2 a1

ANTI-LOCK BRAKES

Anti Lock Brake Wiring Diagram, 8600 GVW or Over with Active Brake Control for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Anti Lock Brake Wiring Diagram, 8600 GVW or Over with Active Brake Control for GMC Cab & Chassis Sierra HD 2012 3500:

(10 series) x131
(20/30 /31 x300 series)
(diesel) x300
(gas) j300
(upper left corner of dash) g201
(w/ rear parking assist, low tire pressure & remote entry) j302
12-volt ref
12-volt ref brake sw sig x3
5-volt ref
A11
Abs indicator
Abs-1 fuse 61 (gas) fuse 56 (diesel) 40a
Angle sensor phase a
Angle sensor phase b
Angle sensor phase c
Auto 4x4 & electronic 4x4
Battery positive voltage
Body control module (bcm) (lower left side of dash)
Brake fluid level switch (on brake master cylinder reservoir)
Brake pressure modulator valve (bpmv)
Brake warning indicator
Can bus high serial data
Can bus low serial data
Computer data lines system
Data bus +
Data bus - x3
Electronic brake control module (ebcm) (on left side of frame assembly)
Except auto 4x4 & electronic 4x4
Except luxury
G201 (upper left corner of dash)
G300 (below driver's door, on body mount)
G302 (below right side of passenger's seat)
Gnd
Ground
Heavy duty abs fuse 59 (gas) fuse 55 (diesel) 60a
Hi serial data
Hot at all times
I/p multi- function switch
Instrument panel cluster (ipc)
Interior lights system
Ipc fuse 43 (diesel) fuse 46 (gas) 10a
J201
J300 (gas)
Left front wheel speed sensor (wss) (on left front steering knuckle)
Left i/p junction block (lower left side of dash)
Left rear wheel speed sensor (wss) (on left rear brake backing plate)
Lf wheel spd sens sig
Lo serial data
Logic
Low ref
Lr wheel spd sens sig
Luxury
Nca
Park brake sw sig x5
Park brake switch (on park brake pedal assembly)
Power distribution system
Radio
Rf wheel spd sens sig
Right front wheel speed sensor (wss) (on right front steering knuckle)
Right rear wheel speed sensor (wss) (on right rear brake backing plate)
Rr wheel spd sens sig
Serial data
Serial data bus (+)
Serial data bus-
Sig
Steering angle sens sig
Steering angle sensor (on steering column)
Stop lamp switch (top of brake pedal assembly)
Tan
Traction control switch
Traction ctrl sw sig
Underhood fuse block (left side of engine compt)
Vehicle spd sig x4
Vehicle speed signal
X109
X115
X201
X202
X202 (w/ front bench seat)
X205
Yaw rate & lateral acceleration sensor (under center console trim panel)

Anti Lock Brake Wiring Diagram, 8600 GVW or Over without Active Brake Control for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Anti Lock Brake Wiring Diagram, 8600 GVW or Over without Active Brake Control for GMC Cab & Chassis Sierra HD 2012 3500:

(10 series) x131
(20/30 /31 x300 series)
(diesel) x300
(top of brake pedal assembly) stop lamp switch
12-volt ref
5-volt ref
Abs indicator
Abs-1 fuse 61 (gas) fuse 56 (diesel) 40a
Auto 4x4 & electronic 4x4
Battery positive voltage
Body control module (bcm) (lower left side of dash)
Brake fluid level switch (on brake master cylinder reservoir)
Brake master cylinder pressure sensor (w/ integrated trailer brake control) (left rear of engine compt)
Brake pressure modulator valve (bpmv)
Brake sw sig x3
Brake warning indicator
Computer data lines system
Cyl press sens sig
Data bus +
Data bus -
Diesel
Electronic brake control module (ebcm) (on left side of frame assembly)
Engine control module (ecm) (left front of engine compt, near fan shroud)
Except auto 4x4 & electronic 4x4
Except luxury
G201 (upper left corner of dash)
G300 (below driver's door, on body mount)
Gas
Gnd
Ground
Heavy duty abs fuse 59 (gas) fuse 55 (diesel) 60a
Hot at all times
Instrument panel cluster (ipc)
Interior lights system
Ipc fuse 43 (diesel) fuse 46 (gas) 10a
J300 (gas)
Left front wheel speed sensor (wss) (on left front steering knuckle)
Left i/p junction block (lower left side of dash)
Lf wheel spd sens sig
Logic
Low ref
Luxury
Nca
Park brake sw sig x5
Park brake switch (on park brake pedal assembly)
Power distribution system
Radio
Rf wheel spd sens sig
Right front wheel speed sensor (wss) (on right front steering knuckle)
Serial data
Serial data bus (+)
Serial data bus-
Sig
Tan
Underhood fuse block (left side of engine compt)
Vehicle spd sig
Vehicle spd sig x4
X107
X109
X202 (w/ front bench seat)
X205
X300

Anti Lock Brake Wiring Diagram, Less Than 8600 GVW for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Anti Lock Brake Wiring Diagram, Less Than 8600 GVW for GMC Cab & Chassis Sierra HD 2012 3500:

(10 series)
(20/30/31 series)
(diesel)
(left rear of engine compt) (w/ active brake control) brake booster vacuum sensor
(on brake master cylinder reservoir) brake fluid level switch
(on steering column) (w/ active brake control) steering angle sensor
(or 1827)
(or 7064)
(or 817)
(upper left corner of dash) g201
12-volt
12-volt ref
4.3l
5-volt ref
A11
Abs indicator
Abs-1 fuse 61 40a
Abs-2 fuse 9 25a
Auto 4x4 & electronic 4x4
Battery positive voltage
Body control module (bcm) (lower left side of dash)
Booster vacuum sens sig
Brake pressure modulator valve (bpmv)
Brake sw sig
Brake warning indicator
Can bus high serial data
Can bus low serial data
Computer data lines system
Data bus +
Data bus -
Data serial
Electronic brake control module (ebcm) (on left side of frame assembly)
Except auto 4x4 & electronic 4x4
Except luxury
G201 (upper left corner of dash)
G300 (below driver's door, on body mount)
G302 (below right side of passenger's seat)
Gnd
Ground
Hot at all times
I/p multi-function switch (w/ active brake control)
Instrument panel cluster (ipc)
Interior lights system
Ipc fuse 46 (gas) fuse 43 (diesel) 10a
J x300
J201
J300 (gas)
J302 (w/ keyless entry, active brake control, w/ rear park assist & tpms indicator)
K x131
Left front wheel speed sensor (wss) (on left front steering knuckle)
Left i/p junction block (lower left side of dash)
Left i/p junction block (lower left side of dash) x1
Left rear wheel speed sensor (wss) (on left rear brake backing plate)
Lf wheel spd sens sig
Logic
Low ref
Lr sig wheel spd sens
Luxury
Nca
Park brake switch (on park brake pedal assembly)
Park brk sw
Power distribution system
Radio
Red
Rf sig wheel spd sens
Right front wheel speed sensor (wss) (on right front steering knuckle)
Right rear wheel speed sensor (wss) (on right rear brake backing plate)
Rr sig wheel spd sens
Sensor phase a
Sensor phase b
Sensor phase c
Serial data
Serial data bus +
Serial data bus-
Sig
Steering angle sens sig
Stop lamp switch (top of brake pedal assembly)
Tan
Traction control switch
Traction ctrl sw sig
Underhood fuse block (left side of engine compt)
Veh spd signal engine control module (ecm) (left front of engine compt, near fan shroud)
Vehicle spd sig
Vehicle spd sig x4
W/ active brake control
W/o active brake control
X109
X115
X201
X202
X202 (w/ front bench seat)
X205
X300
X300 b
Yaw rate & lateral acceleration sensor (w/ active brake control) (under center console trim panel)

Trailer ABS Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Trailer ABS Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(10 series) j300
(except 10 series) j411
(in camper harness, 205 cm from x414 breakout) (w/ 5th wheel trailer) j421
(in chassis harness) j422
(lower left side of dash) left i/p junction block
(on left rear body mount) (except 10 series) g401
10 series
6.6l w/o 10 series
Comm data
Computer data lines system
Except 10 series
Except 6.6l
Exterior lights system
Fscm fuse 21 25a
G300 (10 series) (below driver's door, on body mount)
Gmlan +
Gmlan -
Gnd
Hot at all times
Hot w/ run/crnk relay energized
Ign 1 volt
Interior lights system
Itbc fuse 6 fuse 19 15a
Low ref
Misc ign fuse 43 fuse 40 10a
Pnk
Power distribution system
Rly enable
Rly feedback
Stop lamp switch (top of brake pedal assembly)
Stud 2 fuse 63 fuse 58 30a
Tan
Tcc brk sig
Trailer brake control module (tbcm) (except 10 series) fuel pump/trailer brake control module (tbcm) (10 series) (20/30 series: left rear frame rail) (31 series: on left frame rail) (fuel pump/trailer brake control module (tbcm): rear frame, near spare tire mount)
Trailer brake control switch
Trailer brake controller solid state relay (20/30 series: left rear frame rail) (31 series: on left frame rail)
Trailer connector (at rear of vehicle)
Trl brk rly
Trl brk sig
Underhood fuse block (left side of engine compt)
W/ 5th wheel trailer
W/ heavy duty trailer harness
X102
X205
X414

ANTI-THEFT

Anti-theft Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Anti-theft Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(except hybrid: left front of engine compt, near fan shroud) (hybrid: left front of engine compt) engine control module (ecm)
(in spo theft harness)
(in spo theft harness) j228
(w/ active brake controls & door ajar indicator)
3b2
4a7
6.0l (vin j)
6.6l
Acc
Acc v
Ant
Auxiliary fuse block (left side of engine compt)
Bcm fuse 15 10a
Body control module (bcm) (lower left side of dash)
Coax
Computer data lines system
Ddm fuse 4 15a
Dim fuse 7 10a
Distribution system power
Dlis fuse 35 fuse 32 2a
Dr key sw
Driver door lock switch
Driver door lock/ window switch
Driver information center (dic) display
Dsm fuse 25 10a
Except 6.0l (vin j)
Except 6.6l
Exterior lights system
G101 (except diesel: on lower right radiator support) (diesel: right front corner of engine compt)
G200 (on right front corner of hvac module)
G201 (upper left corner of dash)
G302 (below right side of passenger's seat)
Gmlan
Gnd
Grd
Ground distribution system
Hdlp rly
Headlights system
Hood ajar sw sig
Hood ajar switch (part of hood latch assembly)
Hood sw sig
Horn rly
Horns system
Hot at all times
I/p fuse block (left side of dash)
Ignition switch
Instrument panel cluster (ipc)
Interior lights system
Interior lights system computer data lines system
Intrus sig
J101
J114
J115
J213
J227
J230
Keyless entry antenna
Left i/p junction block (lower left x5 side of dash)
Lf ajar sw
Lock
Logic
Lr ajar sw
Nca
Off
Passenger door lock/ window switch
Pdm fuse 9 (w/ comfort & decor level 3 convenience package) 15a
Power distribution system
Prl lp rly
Remote control door lock receiver (rcdlr) (top rear of passenger compt)
Rf ajar sw
Rf dr ajr sw
Right i/p junction block (in right end of dash)
Right i/p junction block (in right x2 end of dash)
Rr ajar sw
Run
Sec ind
Security ind
Security indicator lamp
Seo b1 fuse 52 fuse 49 15a
Sns sig
Start
Sw sig
Tan
Theft deterrent control module (on right side of steering column)
Underhood fuse block (left side of engine compt)
Unlock
Vehicle inclination sensor
Vehicle shock sensor
Volt
W/ individual front seat & power mirror
W/ keyless entry & pto
W/ remote keyless entry & pto
X103
X227

BODY CONTROL MODULES

Body Control Modules Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Body Control Modules Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(not used)
12 volt ref
5 volt ref
Acc
Accessory volt
Ambient lt sens sig
Anti-lock brakes system
Battery +
Body control module (bcm) (lower left side of dash)
Courtesy lamps ctrl
Cruise control system
Cruise ctrl sw sig
Dim fuse 7 10a
Exterior lights system
Hazard sw left turn sig
Hazard sw right turn sig
Hazard sw sig
Headlamp dim sw sig
Headlamp flash to pass sig
Headlamp sw headlamp off sig
Headlamp sw headlamp on sig
Headlamp sw park lamp sig
Headlights & exterior lights systems
Headlights system
Hot at all times
I/p fuse block (left side of dash)
I/p lamps dim ctrl
Ig 3 volt
Ign 1 volt
Ignition switch (in upper steering column)
Interior lamp defeat sw sig
Interior lights system
J213
Key in ignition switch
Low ref
Off
Pnk
Power distribution system
Run
Shift interlock system
Sound systems
Sound, cruise control & transmissions systems
Start
Steer whl ctrl sw sig
Tan
Tap up/tap down sw sig
Tow/haul sw sig
Traction ctrl sw sig
Transmissions system
Windshield wash sw sig
Wiper sw hi sig
Wiper sw low sig
Wiper/washer system
X201

Body Control Modules Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Body Control Modules Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(gas) (diesel)
12v ref
5volt ref
Accessory wakeup serial data
Anti-lock brakes & exterior lights systems
Anti-theft system
Battery +
Bcm fuse 15 10a
Body control module (bcm) (lower left side of dash)
Computer data lines system
Cruise control & seats systems
Cruise ctrl ind dim sig
Ctsy fuse 5 15a
Drl relay ctrl
Exhaust brk sw sig
Exterior lights system
Fog lamp relay ctrl
Front fog lamp sw sig/enable
G103 (on front of right cylinder head)
G201 (upper left corner of dash)
Ground
Headlamp hi beam relay ctrl
Headlights system
Hi spd gmlan serial data bus (+)
Hi spd gmlan serial data bus (-)
Hood ajar sw sig
Hot at all times
I/p fuse block (left side of dash)
I/p lamp dimmer sw sig
Indicator dim ctrl
Instrument cluster system
Interior lights & exterior lights systems
Interior lights system
Ipc fuse 46 fuse 43 10a
Is lps fuse 17 10a
Led backlight dim ctrl
Liner interconnect bus
Lo spd serial data
Low ref
Lt stop trn fuse 6 15a
Lt trlr turn sig lamp
Power distribution system
Rt stop trn fuse 8 15a
Rt trlr turn sig lamp
Run/crank relay ctrl
Security ind ctrl
Serial data comm enable
Stop lamps fuse 12 15a
Stp lp sw sig
Tan
Underhood fuse block (left side of engine compt)
Washer relay ctrl
Wiper motor park sw sig
Wiper/washer system
X109

Body Control Modules Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Body Control Modules Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

12 volt ref
Anti-theft system
Backup lamp relay ctrl
Body control module (bcm) (lower left side of dash)
Cruise/etc/tcc brake sig
Current sens sig
Door lk ctrl
Door locks system
Door unlk ctrl
Drvr door key sw sig
Drvr door lk sw lk sig
Drvr door lk sw unlk sig
Drvr door unlk relay ctrl
Exhaust brk sw ctrl
Exterior lights & navigation systems
Exterior lights system
Front windshield sw hi sig ctrl
Headlamp lo beam relay ctrl
Headlights system
Hood closed sw sig
Horn relay ctrl
Horns system
Ign 3 voltage
Instrument cluster system
Interior lights system
Intrusion sens alarm on sig
Intrusion sens armed sig
Lf door ajar sw sig
Low ref
Lr door ajar sw sig
Out of park sig
Park brake sw sig
Park lamp relay ctrl
Pass door lk sw lk sig
Pass dr lk sw unlk sig
Pnk
Power distribution system
Power windows system
Pwr win mstr sw lkout rear sig
Pwr win mstr sw lkout sig
Pwr win mstr sw lr dn sig
Pwr win mstr sw lr up sig
Pwr win mstr sw rr dn sig
Pwr win mstr sw rr up sig
Rf door ajar sw sig
Rr door ajar sw sig
Seats system
Starting/charging system
Tan
Transmissions system
Warning, instrument cluster, anti-lock brakes & headlights systems
Wiper sw sig 2
Wiper/washer system

COMPUTER DATA LINES

Computer Data Lines Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Computer Data Lines Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(in i/p extension harness, behind left side of dash) splice pack jx223
(lower left side of dash) left i/p junction block
(not used)
(not used) b
(not used) e
(not used) f
(not used) j
(not used) l
(under front passenger's seat) splice pack jx339
2 or more
3b1
A10
A15
Audio amplifier (if equipped) (under rear of center console)
Body control module (bcm) (lower left side of dash)
C (not used)
Chime module (center of dash, behind radio)
Data link connector (dlc) (lower left side of dash)
Digital radio receiver (behind right end of dash)
Digital radio receiver (if equipped) (behind right end of dash)
Driver door lock/window switch
G200 (on right front corner of hvac module)
G201 (upper left corner of dash)
Ground distribution system
Heated seat control module (w/ spo heated seats)
Hot at all times
Hvac control module
I/p fuse block (left side of dash)
Inflatable restraint front passenger presence system (pps) module (if equipped) (under front passenger seat)
Inflatable restraint sensing & diagnostic module (sdm) (under driver's seat)
Instrument panel cluster (ipc)
J200
Left i/p junction block (lower left side of dash)
Low spd gmlan ser data
Low speed gmlan serial data
Low speed serial data
Low speed serial data x7
Ltr fuse 53 (except 6.6l) fuse 50 (6.6l) 20a
Memory seat module (w/ individual front seat) (under front of driver's seat)
Of w/ onstar, digital radio & rear seat & earphone jacks radio control
Passenger door lock/window switch
Power distribution system
Radio
Rear object sensor control module (at rear cargo area, behind trim panel)
Rear seat audio (rsa) control
Rear seat audio (rsa) control (if equipped)
Remote control door lock receiver (rcdlr) (top rear of passenger compt)
Right i/p junction block (in right end of dash)
Splice pack jx221 (in i/p harness, behind left side of dash)
Tan
Theft deterrent control module (tdm) (on right side of steering column)
Underhood fuse block (left side of engine compt)
Vehicle communication interface module (vcim) (behind center of dash)
Vehicle communication interface module (vcim) (if equipped) (behind center of dash)
W/ digital radio
W/ digital radio, rear seat, onstar & earphone jacks radio control
W/ front bench seat
W/ front seat & remote control
W/ individual front seat
W/ luxury edition
W/ onstar
W/ radio provisions
W/ rear parking assist
W/ rear seat & earphone jacks radio control
W/ remote keyless entry
W/o individual front seat
W/o luxury edition
W/o luxury edition & w/ odometer security provisions
W/o radio provisions
X201
X202
X212
X301
X303
X305
X331

Computer Data Lines Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Computer Data Lines Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(4.8l, 5.3l & 6.2l) j338
(lower left side of dash) (w/ two speed transfer case) transfer case shift control module
4.8l, 6.2l & 5.3l
8600 gvm w/ active brake control
8600 gvw w/o active brake control
Can bus hi serial data
Can bus low serial data
Comm enable serial data
Data link resistor (in chassis harness, on left rear chassis cross member)
Electronic brake control module (ebcm) (on left side of frame assembly)
Except 4.8l, 6.2l & 5.3l
Fuel pump flow control module (4.8l, 6.2l & 5.3l) (rear frame, near spare tire mount)
Hi serial data
Hi spd gmlan (+)
Hi spd gmlan (-)
Hi spd gmlan serial data ( +)
Hi spd gmlan serial data (+)
Hi spd gmlan serial data (-)
Left i/p junction block (lower left side of dash)
Less than 8600 gvm
Lo serial data
Serial data (-) hi spd gmlan
Serial data comm enable
Tan
Trailer brake
Trailer brake controller module (tbcm) (integrated trailer brake w/o 10 series) fuel pump/trailer brake control module (integrated trailer brake w/ 10 series) (20/30 series: left rear frame rail) (31 series: on left frame rail)
Vehicle communication interface module (vcim) (behind center of dash)
W/ active brake control except 10 series
W/ hydraulic brakes
W/ onstar
W/ trailer brake
W/ two speed transfer case
W/o
W/o integrated trailer brake control
W/o onstar
W/o trailer brake
W/o two speed transfer case
X115
X202
Yaw rate & lateral acceleration sensor (w/ active brake control) (under center console trim panel)

Computer Data Lines Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Computer Data Lines Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of engine compt, near fan shroud) transmission control module (tcm)
(outside of right front chassis frame) power take off (pto) module
2wd
4.3l
4.8l, 5.3l & 6.2l
4wd
6.0l
6.6l
Accessory wakeup serial data
Accessory wakeup serial data linear interconnect network bus
Automatic transmission
B10
Body control module (bcm) (lower left side of dash)
Control solenoid valve assembly
Electronic compass module
Engine control module (ecm) (left front of engine compt, near fan shroud)
Except 6.6l
Glow plug control module (gpcm) (6.6l) (right front side of engine)
Hi spd gmlan serial data (+)
Hi spd gmlan serial data (-)
High speed gmlan serial data bus (+)
High speed gmlan serial data bus (+) ser data comm enable
High speed gmlan serial data bus (-)
J104 (6.6l: in engine harness, 5 cm from engine control module connector breakout)
J222 (w/ pto) (in instrument panel harness)
Left i/p block junction (lower left side of dash)
Nitrogen oxides sensor 1 (in exhaust, top left rear rear side of engine)
Nitrogen oxides sensor 2 (in exhaust, middle of diesel particulate filter)
Power take off (pto) module (outside of right front chassis frame)
Reductant sensor module (above reductant tank)
S x300
Ser data commu- nication enable
Speed a/t
Tan
Terminator
W/ pto
W/o pto
X10
X107
X109
X123
X395

COOLING FAN

Cooling Fan Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Cooling Fan Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

5v ref
Automatic a/c
Computer data lines system
Data bus +
Data bus -
Driver information center (dic) display
Ect sens sig
Engine control module (ecm) (left front of engine compt, near fan shroud)
Engine coolant level switch (on bottom of surge tank)
Engine coolant temperature (ect) sensor (top front center of engine)
Engine cooling fan (front center of engine compt)
Fan fuse 68 10a
Fan rly relay
G103 (on front of right cylinder head)
Gmlan l
Gnd
Hot at all times
Hvac control module
Instrument panel cluster (ipc)
J105
Logic
Low ref
Manual a/c
Rly spd sig
Serial data
Spd sig
Sw sig
Tan
Underhood fuse block (left side of engine compt)
X109
X113
X2 a1

CRUISE CONTROL

6.0L VIN G

6.0L VIN G, Cruise Control Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, Cruise Control Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

12v ref
5 volt ref
5v ref
5v ref 2
6.0l
Accelerator pedal position (app) sensor (above accelerator pedal)
App sen 1 sig
App sen 2 sig
Automatic transmission
B10
Batt +
Body control module (bcm) (lower left side of dash)
Brake pedal position (bpp) sensor
Cancel
Column harness)
Computer data lines system
Control solenoid valve assembly
Cruise control ind dimming sig
Cruise control switch signal
Cruise ind
Cruise switch
Data bus +
Data bus -
Dim fuse 7 10a
Ecm batt fuse 12 10a
Engine control module (ecm) (left front of engine compt, near fan shroud)
Except 6.0l
G103 (on front of right cylinder head)
G201 (upper left corner of dash)
Ground
Ground distribution system
Hi spd gmlan ser data bus+
Hi spd gmlan ser data bus-
Hot at all times
I/p fuse block (left side of dash)
Inflatable restraint steering wheel module coil (behind steering wheel)
Input shaft speed sensor (iss)
Input speed sensor (iss) signal
Instrument panel cluster (ipc)
Ipc fuse 46 10a
J106
J127
J216 (in steering pnk
J217 (9 cm from inflatable restraint steering wheel module coil x2)
Left i/p junction block (lower left side of dash)
Left steering wheel control switch assembly
Logic
Low ref
Output shaft speed sensor (oss)
Output speed sensor (oss) signal
Pnk
Power distribution system
Red
Res+
Ser data
Ser data bus(+)
Ser data bus(-)
Set-
Sound systems
Stp cp sw sig
Tac motor ctrl-1
Tac motor ctrl-2
Tan
Throttle body
Tp sens 1 sig
Tp sens 2 sig
Transmission control module (tcm)
Transmissions system
Underhood fuse block (left side of engine compt)
Vehicle speed sensor (vss) (w/ transfer case) (on transfer case tailshaft housing)
Vss hi sig
Vss lo sig
W/ 2 speed automatic transfer case
W/ 2 speed manual transfer case
X109
X201
X205

6.6L VIN 8

6.6L VIN 8, Cruise Control Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, Cruise Control Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of engine compt, near fan shroud)
(lower left side of dash) body control module (bcm)
12v ref
5 volt ref
5v ref-1
5v ref-2
5v ref-3
Accelerator pedal position (app) sensor (above accelerator pedal)
App sen 1 sig
App sen 2 sig
B10
Batt +
Brake pedal position (bpp) sensor
Cancel
Column harness)
Computer data lines system
Cruise control ind dimming sig
Cruise control switch signal
Cruise ind
Cruise switch
Dim fuse 7 10a
Ecm batt fuse 11 15a
Engine control module (ecm) (left front of engine compt, near fan shroud)
G103 (on front of right cylinder head)
G109 (right front lower side of engine block)
G201 (upper left corner of dash)
Gmlan data bus+
Gmlan data bus-
Ground
Ground distribution system
Hi spd gmlan ser data bus(+)
Hi spd gmlan ser data bus(-)
Hot at all times
I/p fuse block (left side of dash)
Inflatable restraint steering wheel module coil (behind steering wheel)
Instrument panel cluster (ipc)
Intake air valve
Ipc fuse 43 10a
J160
J216 (in steering pnk
J217 (9 cm from inflatable restraint steering wheel module coil x2)
Left i/p junction block (lower left side of dash)
Left steering wheel control switch assembly
Logic
Low ref
Motor ctrl 2
Motor ctrl-1
Nca
Pnk
Power distribution system
Res+
Ser data
Ser data bus+
Ser data bus-
Set-
Sound systems
Stp cp sw sig
Tan
Tp sens sig
Transmission control module (tcm)
Transmissions system
Underhood fuse block (left side of engine compt)
Vehicle speed sensor (vss) (rear of transmission)
Vss hi sig
Vss lo sig
W/ two speed push button & electric shift control transfer case
W/o two speed push button & electric shift control transfer case
X107
X109
X201
X205

6.6L VIN L

6.6L VIN L, Cruise Control Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN L, Cruise Control Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of engine compt, near fan shroud)
(lower left side of dash) body control module (bcm)
12v ref
5 volt ref
5v ref-1
5v ref-2
5v ref-3
Accelerator pedal position (app) sensor (above accelerator pedal)
App sen 1 sig
App sen 2 sig
B10
Batt +
Brake pedal position (bpp) sensor
Cancel
Column harness)
Computer data lines system
Cruise control ind dimming sig
Cruise control switch signal
Cruise ind
Cruise switch
Dim fuse 7 10a
Ecm batt fuse 11 15a
Engine control module (ecm) (left front of engine compt, near fan shroud)
G103 (on front of right cylinder head)
G109 (right front lower side of engine block)
G201 (upper left corner of dash)
Gmlan data bus+
Gmlan data bus-
Ground
Ground distribution system
Hi spd gmlan ser data bus(+)
Hi spd gmlan ser data bus(-)
Hot at all times
I/p fuse block (left side of dash)
Inflatable restraint steering wheel module coil (behind steering wheel)
Instrument panel cluster (ipc)
Intake air valve
Ipc fuse 43 10a
J160
J216 (in steering pnk
J217 (9 cm from inflatable restraint steering wheel module coil x2)
Left i/p junction block (lower left side of dash)
Left steering wheel control switch assembly
Logic
Low ref
Motor ctrl 2
Motor ctrl-1
Nca
Pnk
Power distribution system
Res+
Ser data
Ser data bus+
Ser data bus-
Set-
Sound systems
Stp cp sw sig
Tan
Tp sens sig
Transmission control module (tcm)
Transmissions system
Underhood fuse block (left side of engine compt)
Vehicle speed sensor (vss) (rear of transmission)
Vss hi sig
Vss lo sig
W/ two speed push button & electric shift control transfer case
W/o two speed push button & electric shift control transfer case
X107
X109
X201
X205

DEFOGGERS

Heated Mirrors Wiring Diagram, with Power Folding Mirror for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Heated Mirrors Wiring Diagram, with Power Folding Mirror for GMC Cab & Chassis Sierra HD 2012 3500:

3b2
4a7
B4 x4
Batt pos volt
Computer data lines system
Ddm fuse 4 15a
Driver door lock/ window switch
Driver outside rearview mirror
G200 (on right front corner of hvac module)
G201 (upper left corner of dash)
Ground
Ground distribution system
Hot at all times
Hvac control module
I/p fuse block (left side of dash)
Logic
Low ref
Passenger door lock/window switch
Passenger outside rearview mirror
Pdm fuse 9 15a
Power distribution system
Rear defogger ind
Rear defogger switch
Right i/p junction block (in right end of dash)
Serial data

Heated Mirrors Wiring Diagram, without Power Folding Mirror for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Heated Mirrors Wiring Diagram, without Power Folding Mirror for GMC Cab & Chassis Sierra HD 2012 3500:

(6.6l) (except 6.6l & 4.3l) (4.3l)
(except 6.6l) (6.6l)
175a
A x6
Automatic a/c
D5 x4
Driver outside rearview mirror
G103 g102 g107 (6.6l: on front of right cylinder head) (except 6.6l & 4.3l: on lower left front of engine) (4.3l: top left rear of engine)
G200 (on right front corner of hvac module)
G201 (upper left corner of dash)
Hot at all times
Htd mir fuse 53 fuse 51 30a
Hvac control module
J105
J502
J603
Logic
Manual a/c
N5 x2
Nca
Passenger outside rearview mirror
Power distribution system
Rear defog relay
Rear defogger ind
Rear defogger switch
Underhood fuse block (left side of engine compt)
Underhood fuse holder (except 6.6l: on positive battery terminal) (6.6l: right side of firewall)
X202
X4 a7
X500
X600

Rear Defogger Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Rear Defogger Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(6.6l) (except 6.6l & 4.3l) (4.3l)
(6.6l: right side of firewall)
(except 6.6l) (6.6l)
(except crew cab) (crew cab)
175a
A x1
A x6
Automatic a/c
B5 x4
B8 x202
G103 g102 g107 (6.6l: on front of right cylinder head) (except 6.6l & 4.3l: on lower left front of engine) (4.3l: top left rear of engine)
G304 g307 (except crew cab: on lower right "b" pillar) (crew cab: at right rear corner of passenger compt)
Hot at all times
Hvac control module
J105
Logic
Manual a/c
N5 x2
Power distribution system
Rear defog fuse 50 fuse 47 30a
Rear defog relay
Rear defogger ind
Rear defogger switch
Rear window defogger grid
Underhood fuse block (left side of engine compt)
Underhood fuse holder (except 6.6l: on positive battery terminal)
X4 a7

ENGINE PERFORMANCE

6.0L VIN G

6.0L VIN G, Engine Performance Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, Engine Performance Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(below intake manifold) valve lifter oil manifold (vlom) assembly
(on lower left front of engine) g102
175a
4wd low sig
5 volt ref 3
5-volt ref 1
5-volt ref 4
A/c sens sig
Air conditioning system
Anti-lock brakes system
App sens 1 sig
App sens 2 sig
Axle sw sig
B+ volt
Brake sw sig
Charge ind sig
Compr cltch rly ctrl
Computer data lines system
Engine control module (ecm) (left front of engine compt, near fan shroud)
Evap vent sol ctrl
Evaporative emissions (evap) canister vent solenoid valve (under rear of vehicle)
Exterior lights system
Fp rly ctrl
Fuel pmp relay
Fuel pump fuse 20 25a
G103 (on front of right cylinder head)
High spd data bus +
High spd data bus -
Hot at all times
Iat sens sig
Ignition 1 volt
Inlet press sens sig
J106
Low ref
Maf sens sig
Mass air flow (maf)/intake air temperature (iat) sensor (right front of engine compt)
Mil ctrl
Park/neutral sig
Pnk
Pnk d
Primary rly ctrl
Pwtn rly ctrl
Starting/charging system
Str enable rly ctrl
Tan
Tan a
Throttle inlet absolute pressure sensor (on throttle body)
Transmissions system
Underhood fuse block (left side of engine compt)
Vehicle spd sig
Wakeup serial data
X300

6.0L VIN G, Engine Performance Wiring Diagram (2 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, Engine Performance Wiring Diagram (2 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

Accelerator pedal position (app) sensor (above accelerator pedal)
Ecm- batt fuse 12 10a
Ecm- ign fuse 56 15a
Ecm/throt cont fuse 5 15a
Eng fuse 4 15a
Evaporative emissions (evap) canister purge solenoid valve (on intake manifold)
G300 (below driver's door, on body mount)
Hot at all times
Hot w/ run/crnk relay energized
J300
Pnk
Pnk a
Pwr/ trn relay
Secondary fuel pump (fp) relay (w/ dual fuel tank) (left side of engine compt)
Tan
Tcm- batt fuse 14 15a
To inj-b fuse 13 (diagram 5 of 6)
Transfer case electric shift control
Underhood fuse block (left side of engine compt)
Vehicle speed sensor (vss) (on transfer case tailshaft housing)
W/ two speed
W/o two speed
X109
X205
X300

6.0L VIN G, Engine Performance Wiring Diagram (3 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, Engine Performance Wiring Diagram (3 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(lower left side of dash) left i/p junction block
(on fuel pump & sender assembly)
Aux hvac- ign fuse 48 1oa
Computer data lines system
Front fuel pump & sender assembly (in front fuel tank)
Fuel tank pressure (ftp) sensor
G201 (upper left corner of dash)
G300 (below driver's door, on body mount)
Gnd
Ground distribution system
Hot at all times
Hot w/ run/crnk relay energized
Ign
Instrument panel cluster (ipc)
Ipc fuse 46 10a
J220
J300
J331 (in chassis harness)
Lo bus
Logic
Low oil pressure ind
Malfunction indicator lamp
Pnk
Power distribution system
Rear fuel pump & sender assembly (w/ dual fuel tank) (in rear fuel tank)
Underhood fuse block (left side of engine compt)
W/ steering wheel heater
W/o steering wheel heater
X109
X300

6.0L VIN G, Engine Performance Wiring Diagram (4 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, Engine Performance Wiring Diagram (4 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(between ignition coils 4 & 2)
(in ignition coil jumper harness, 5 cm from x111 breakout)
(pin 18 to 21 not used)
(pin 19 to 25 not used)
(upper left side of engine) ignition coils
(upper right side of engine) ignition coils
5 volt ref 1
5 volt ref 3
Brake pedal position sensor
Ect sens sig
Engine control module (ecm) (left front of engine compt, near fan shroud)
Evap ctrl
Fuel tank sig
G102 (on lower left front of engine)
Generator sig
Ho2s ctrl
Ho2s hi sig
Ho2s low sig
J107 (in ignition coil pnk jumper harness, between ignition coils 5 & 7)
J109
J110
J112
Low ref
Map sens sig
Nca
Plug spark
Pmry sen sig
Pnk
Red
Secondary sig
Sig snsr
Starting/ charging system
Tan
Tos sig
Transmissions system
Vol sply
Vss hi sig
Vss low sig
W/ two speed tranfer case
W/o two speed tranfer case
X109
X111
X113
X205

6.0L VIN G, Engine Performance Wiring Diagram (5 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, Engine Performance Wiring Diagram (5 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(top of right cylinder bank) fuel injectors
A pnk
Camshaft position (cmp) sensor (front of engine, above crank pulley)
Crankshaft position (ckp) sensor (right rear of engine)
Engine coolant temperature (ect) sensor (on top of engine)
From ecm/throt cont fuse 5 (diagram 2 of 6)
Heated oxygen sensor (ho2s) bank 1 sensor 2 (downstream of left catalytic converter)
Heated oxygen sensor (ho2s) bank 2 sensor 2 (downstream of right catalytic converter)
Inj-a fuse 24 20a
Inj-b fuse 13 20a
Manifold absolute pressure (map) sensor (on top of intake manifold)
Nca
O2-a snsr fuse 18 10a
O2-b snsr fuse 8 10a
Pnk
Tan
Underhood fuse block (left side of engine compt)
X112

6.0L VIN G, Engine Performance Wiring Diagram (6 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, Engine Performance Wiring Diagram (6 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(front of engine) camshaft position (cmp) actuator solenoid valve
(top of left cylinder bank) fuel injectors
5-volt ref 1
5-volt ref 2
5-volt ref 4
A pnk
B tan
C tan
Camshaft ctrl
Ckp sens sig
Cmp sens sig
Engine control module (ecm) (left front of engine compt, near fan shroud)
Engine oil pressure (eop) sensor (top rear of engine)
G103 (on front of right cylinder head)
Gnd
Heated oxygen sensor (ho2s) bank 1 sensor 1 (upstream of left catalytic converter)
Heated oxygen sensor (ho2s) bank 2 sensor 1 (upstream of right catalytic converter)
Ho2s heater low
Ho2s high sig
Ho2s low ctrl
Ho2s low sig
Ic 1 ctrl
Ic 2 ctrl
Ic 3 ctrl
Ic 4 ctrl
Ic 5 ctrl
Ic 6 ctrl
Ic 7 ctrl
Ic 8 ctrl
Ignition 1 volt
Injector 1 ctrl
Injector 2 ctrl
Injector 3 ctrl
Injector 4 ctrl
Injector 5 ctrl
Injector 6 ctrl
Injector 7 ctrl
Injector 8 ctrl
J106
Knock sensor (ks) 1 (lower left side of engine)
Knock sensor (ks) 2 (lower right side of engine)
Ks 1 sig
Ks 2 sig
Low ref
Nca
Pnk
Pnk d
Press sens sig
Tac mtr ctrl 1
Tac mtr ctrl 2
Tan
Tan a
Throttle body
Tp sens 1 sig
Tp sens 2 sig
X112

6.6L VIN 8

6.6L VIN 8, Engine Performance Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, Engine Performance Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(above reductant tank) reductant pressure sensor
(under vehicle, above reductant tank) reductant purge solenoid valve
5 volt ref
A/c clutch rly ctrl
Air conditioning system
Air flow sens sig
App sig 1
App sig 2
Cf ctrl rly spd sig
Computer data lines system
Cooling fan spd sig
Cooling fans system
Cooling fans system starting/charging system cooling fans system transmissions system
Cruise/etc/tcc brk sig
Def smart pump ctrl
Def valve high ctrl
Def valve low ctrl
Duty cycle sig
Egt sens 2 sig
Egt sens 3 sig
Egt sens 4 sig
Engine control module (ecm) (left side of engine compt, near fan shroud)
Engine indicator ctrl
Exhaust differential sensor (on frame rail above catalytic converter)
Exhaust temperature sensor 2 (in exhaust, downstream of catalytic converter)
Exhaust temperature sensor 3 (in exhaust, middle of diesel particulate filter)
Exhaust temperature sensor 4 (in exhaust, near rear of diesel particulate filter)
Exterior lights system
Fuel level sens
Fwd lock ind
Fwd lock sig
Generator turn on sig
Ign 1 volt
Inj high ctrl
Inj low ctrl
Low ref
Mass air flow (maf)/intake air temperature (iat) sensor
Nca
Park/neutral sig
Pnk
Pressure sens sig
Pressure sens sig 1
Pump sply volt
Replicated tos sig
Rly coil ctrl
Ser data +
Ser data -
Starter enable rly ctrl
Starting/charging system
Tan
Temp sens sig
Transmissions system
Valve low ctrl
Wait to start ind ctrl
Wakeup serial data
X300
X395

6.6L VIN 8, Engine Performance Wiring Diagram (2 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, Engine Performance Wiring Diagram (2 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(above reductant tank) reductant pump
(in exhaust, rear of catalytic converter) reductant injector
(in front fuel tank) primary fuel level sensor
(near compressor, on a/c high pressure hose) (if equipped) a/c refrigerant pressure sensor
(on front of right cylinder head)
(right rear of engine) exhaust after treatment fuel injector
(under vehicle, above reductant tank) reductant line heater
(w/ dual fuel tank) j313
Accelerator pedal position (app) sensor (above accelerator pedal)
B10
C10
Computer data lines system
G103
G103 (on front of right cylinder head)
Gnd
Hi spd gmlan ser data +
Hi spd gmlan ser data -
Ign volt
Ind ctrl
Instrument panel cluster (ipc)
J105
J106
Logic
Low engine oil pressure ind
Malfunction indicator lamp
Mil ctrl
Nitrogen oxides sensor 2 (in exhaust, middle of diesel particulate filter)
Nitrogen oxides sensor1 (in exhaust, top left rear side of engine)
Pnk
Red
Reductant fluid reservoir assembly
Reductant sensor module (above reductant tank)
Reductant tank heater
Sens 1 gnd
Sens 1 sply volt
Sens 2 gnd
Ser data
Tan
Tan c
Transfer case
W/ 2 speed
W/o 2 speed
Wait to start ind
X107
X109
X205
X300
X395

6.6L VIN 8, Engine Performance Wiring Diagram (3 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, Engine Performance Wiring Diagram (3 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(right front lower side of engine block) g109
(right front side of engine) glow plug control module (gpcm)
125a
175a
Charge air cooler inlet temperature sensor (intake manifold)
Charge air cooler outlet temperature sensor (top right front of engine)
Computer data lines system
Exhaust gas recirculation cooler bypass solenoid valve (vin 8) (top right rear of engine)
G109 (right front lower side of engine block)
Glow plugs (2, 4, 6 & 8: above respective cylinders)
Gnd
Hi spd gmlan ser data +
Hi spd gmlan ser data -
Hot at all times
Htr ctrl
Iah comm 1
Iah comm 2
Iah current sig
Iah dig sig
Iah fdbk sig
Iah heart beat sig
Iah sw on/off sig
Iah temp sig
Iah volt feedback sig
Iah volt sig
Ign 1 volt
Intake air heater (iah) (left front of engine )
J161
J162
Line htr ctrl
Manifold absolute pressue (map) sensor (on top of intake manifold)
Nca
Plug 1 ctrl
Plug 2 ctrl
Plug 3 ctrl
Plug 4 ctrl
Plug 5 ctrl
Plug 6 ctrl
Plug 7 ctrl
Plug 8 ctrl
Pnk
Pnk a
Power distribution system
Pump htr ctrl
Red
Sens 1 gnd
Sens 1 sply volt
Sens 2 gnd
Sens 2 sply volt
Tan
Underhood fuse holder (right side of firewall)
Wakeup ser data
X107

6.6L VIN 8, Engine Performance Wiring Diagram (4 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, Engine Performance Wiring Diagram (4 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(in exhaust, upstream of catalytic converter) exhaust temperature sensor 1
(in rear fuel tank) (w/dual fuel tank) secondary fuel level sensor
(left side of engine compt, near fan shroud) engine control module
(mounted on left side of fuel injection pump) fuel temperature sensor 1
(mounted on left side of fuel rail) fuel temperature sensor 2
(right front lower side of engine block)
(right side of engine) water in fuel sensor
(top front center of engine)
(top left rear of engine) fuel rail pressure (frp) sensor
5 volt ref
Act ctrl close
Act ctrl open
Brake pedal position sensor (bpp)
Cac temp sens sig
Ckp sens sig
Cmp sens sig
Ctrl cyl 2
Ctrl cyl 3
Ctrl cyl 5
Ctrl cyl 8
Ect sens sig
Egr valve sens sig
Egrt sens 1 sply volt
Egrt sens 2 sply volt
Egrv mtr high sig
Egrv mtr low sig
Egt sens 1 sig
Engine control module (ecm) (left side of engine compt, near fan shroud)
Engine coolant temperature (ect) sensor
Fuel level sens sig
Fuel temp 1 sig
Fuel temp sig
G109
G109 (right front lower side of engine block)
Gnd
Intake air valve
J161
J162
Low ref
Mtr close ctrl
Mtr open ctrl
Nca
Oil pressure sens sig
Pnk
Pos sens sig
Pos sens sig1
Pressure sens rtn
Pressure sens sig
Pressure sw sig
Shutdown sig
Snsr sig
Tan
Temp 1 rtn
Temp sens rtn
Temp sens sig
Transfer case
Transmi- ssions system
Vol sply
W/ 2 speed
W/o 2 speed
Water in fuel sens sig
X107
X109
X113
X117
X205
X300

6.6L VIN 8, Engine Performance Wiring Diagram (5 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, Engine Performance Wiring Diagram (5 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(between fuel tanks, on left frame rail) (w/ 31 series & rear auxiliary fuel tank) fuel pump
(right front lower side of engine block) g109
(top of right cylinder bank)
Camshaft position (cmp) sensor (front of engine, above crank pulley)
Crankshaft position (ckp) sensor (front of engine, right of crank pulley)
Dsl ecm fuse 12 30a
Ecm batt fuse 11 15a
Ecm ign fuse 53 15a
Ecm/throt cont fuse 17 15a
Eng fuse 3 15a
Engine)
Exhaust gas recirculation (egr) temperature sensor 2 (top right front of engine)
Exhaust gas recirculation (egr) valve (on top right side of engine)
Fuel filter pressure switch (middle right right side of
Fuel injector 2 (above cylinder 2)
Fuel injector 3
Fuel injector 4 (above cylinder 4)
Fuel injector 5
Fuel injector 8 (above cylinder 8)
Fuel pump fuse 18 25a
Fuel pump relay
G103 (on front of right cylinder head)
G109 (right front lower side of engine block)
G300 (below driver's door, on body mount)
Hot at all times
Hot w/ run/crnk relay 15 energized
J105
J130
J160
J161
J162
M2 pnk
Nca
Pnk
Pwr/ trn relay
Tan
Trans ign 1 fuse 13 15a
Underhood fuse block (right side of firewall)
W/ 2 speed electric & manual shift control transfer case
W/o 2 speed electric & manual shift control transfer case
X107

6.6L VIN 8, Engine Performance Wiring Diagram (6 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, Engine Performance Wiring Diagram (6 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(left side of oil pan) engine oil level switch
(pins 33-40 not used)
(pins 42-46 not used)
(pins 49-64 not used)
5 volt ref
Anti-lock brakes system
Dfi volt ctrl cyl 1
Dfi volt ctrl cyl 4
Dfi volt ctrl cyl 6
Dfi volt ctrl cyl 7
Dfi volt ctrl cyl 8
Engine control module (ecm) (left side of engine compt, near fan shroud)
Engine oil pressure (eop) sensor (lower left rear of engine)
Exhaust gas recirculation (egr) temperature sensor 1 (top of right rear of engine)
Fuel injector 1 (top of right cylinder bank)
Fuel injector 6 (above cylinder 6)
Fuel injector 7 (top of right cylinder bank)
Fuel pressure regulator 1
Fuel pressure regulator 2
Fuel pump rly ctrl
G109 (right front lower side of engine block)
G110 (left front lower side of engine block)
Gnd
J160
J161
J164
Low ref
Nca
Oil level sw sig
Sens volt ref
Sol high sig
Sol low sig
Sol sply volt
Tan
Turbocharger vane position control solenoid valve (top rear of engine)
Turbocharger vane position sensor (on left side of engine)
Valve high ctrl
Valve low ctrl
Vehicle spd sig
X110
X113

6.6L VIN L

6.6L VIN L, Engine Performance Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN L, Engine Performance Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(above reductant tank) reductant pressure sensor
(under vehicle, above reductant tank) reductant purge solenoid valve
5 volt ref
A/c clutch rly ctrl
Air conditioning system
Air flow sens sig
App sig 1
App sig 2
Cf ctrl rly spd sig
Computer data lines system
Cooling fan spd sig
Cooling fans system
Cooling fans system starting/charging system cooling fans system transmissions system
Cruise/etc/tcc brk sig
Def smart pump ctrl
Def valve high ctrl
Def valve low ctrl
Duty cycle sig
Egt sens 2 sig
Egt sens 3 sig
Egt sens 4 sig
Engine control module (ecm) (left side of engine compt, near fan shroud)
Engine indicator ctrl
Exhaust differential sensor (on frame rail above catalytic converter)
Exhaust temperature sensor 2 (in exhaust, downstream of catalytic converter)
Exhaust temperature sensor 3 (in exhaust, middle of diesel particulate filter)
Exhaust temperature sensor 4 (in exhaust, near rear of diesel particulate filter)
Exterior lights system
Fuel level sens
Fwd lock ind
Fwd lock sig
Generator turn on sig
Ign 1 volt
Inj high ctrl
Inj low ctrl
Low ref
Mass air flow (maf)/intake air temperature (iat) sensor
Nca
Park/neutral sig
Pnk
Pressure sens sig
Pressure sens sig 1
Pump sply volt
Replicated tos sig
Rly coil ctrl
Ser data +
Ser data -
Starter enable rly ctrl
Starting/charging system
Tan
Temp sens sig
Transmissions system
Valve low ctrl
Wait to start ind ctrl
Wakeup serial data
X300
X395

6.6L VIN L, Engine Performance Wiring Diagram (2 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN L, Engine Performance Wiring Diagram (2 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(above reductant tank) reductant pump
(in exhaust, rear of catalytic converter) reductant injector
(in front fuel tank) primary fuel level sensor
(near compressor, on a/c high pressure hose) (if equipped) a/c refrigerant pressure sensor
(on front of right cylinder head)
(right rear of engine) exhaust after treatment fuel injector
(under vehicle, above reductant tank) reductant line heater
(w/ dual fuel tank) j313
Accelerator pedal position (app) sensor (above accelerator pedal)
B10
C10
Computer data lines system
G103
G103 (on front of right cylinder head)
Gnd
Hi spd gmlan ser data +
Hi spd gmlan ser data -
Ign volt
Ind ctrl
Instrument panel cluster (ipc)
J105
J106
Logic
Low engine oil pressure ind
Malfunction indicator lamp
Mil ctrl
Nitrogen oxides sensor 2 (in exhaust, middle of diesel particulate filter)
Nitrogen oxides sensor1 (in exhaust, top left rear side of engine)
Pnk
Red
Reductant fluid reservoir assembly
Reductant sensor module (above reductant tank)
Reductant tank heater
Sens 1 gnd
Sens 1 sply volt
Sens 2 gnd
Ser data
Tan
Tan c
Transfer case
W/ 2 speed
W/o 2 speed
Wait to start ind
X107
X109
X205
X300
X395

6.6L VIN L, Engine Performance Wiring Diagram (3 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN L, Engine Performance Wiring Diagram (3 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(right front lower side of engine block) g109
(right front side of engine) glow plug control module (gpcm)
125a
175a
Charge air cooler inlet temperature sensor (intake manifold)
Charge air cooler outlet temperature sensor (top right front of engine)
Computer data lines system
Exhaust gas recirculation cooler bypass solenoid valve (vin 8) (top right rear of engine)
G109 (right front lower side of engine block)
Glow plugs (2, 4, 6 & 8: above respective cylinders)
Gnd
Hi spd gmlan ser data +
Hi spd gmlan ser data -
Hot at all times
Htr ctrl
Iah comm 1
Iah comm 2
Iah current sig
Iah dig sig
Iah fdbk sig
Iah heart beat sig
Iah sw on/off sig
Iah temp sig
Iah volt feedback sig
Iah volt sig
Ign 1 volt
Intake air heater (iah) (left front of engine )
J161
J162
Line htr ctrl
Manifold absolute pressue (map) sensor (on top of intake manifold)
Nca
Plug 1 ctrl
Plug 2 ctrl
Plug 3 ctrl
Plug 4 ctrl
Plug 5 ctrl
Plug 6 ctrl
Plug 7 ctrl
Plug 8 ctrl
Pnk
Pnk a
Power distribution system
Pump htr ctrl
Red
Sens 1 gnd
Sens 1 sply volt
Sens 2 gnd
Sens 2 sply volt
Tan
Underhood fuse holder (right side of firewall)
Wakeup ser data
X107

6.6L VIN L, Engine Performance Wiring Diagram (4 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN L, Engine Performance Wiring Diagram (4 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(in exhaust, upstream of catalytic converter) exhaust temperature sensor 1
(in rear fuel tank) (w/dual fuel tank) secondary fuel level sensor
(left side of engine compt, near fan shroud) engine control module
(mounted on left side of fuel injection pump) fuel temperature sensor 1
(mounted on left side of fuel rail) fuel temperature sensor 2
(right front lower side of engine block)
(right side of engine) water in fuel sensor
(top front center of engine)
(top left rear of engine) fuel rail pressure (frp) sensor
5 volt ref
Act ctrl close
Act ctrl open
Brake pedal position sensor (bpp)
Cac temp sens sig
Ckp sens sig
Cmp sens sig
Ctrl cyl 2
Ctrl cyl 3
Ctrl cyl 5
Ctrl cyl 8
Ect sens sig
Egr valve sens sig
Egrt sens 1 sply volt
Egrt sens 2 sply volt
Egrv mtr high sig
Egrv mtr low sig
Egt sens 1 sig
Engine control module (ecm) (left side of engine compt, near fan shroud)
Engine coolant temperature (ect) sensor
Fuel level sens sig
Fuel temp 1 sig
Fuel temp sig
G109
G109 (right front lower side of engine block)
Gnd
Intake air valve
J161
J162
Low ref
Mtr close ctrl
Mtr open ctrl
Nca
Oil pressure sens sig
Pnk
Pos sens sig
Pos sens sig1
Pressure sens rtn
Pressure sens sig
Pressure sw sig
Shutdown sig
Snsr sig
Tan
Temp 1 rtn
Temp sens rtn
Temp sens sig
Transfer case
Transmi- ssions system
Vol sply
W/ 2 speed
W/o 2 speed
Water in fuel sens sig
X107
X109
X113
X117
X205
X300

6.6L VIN L, Engine Performance Wiring Diagram (5 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN L, Engine Performance Wiring Diagram (5 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(between fuel tanks, on left frame rail) (w/ 31 series & rear auxiliary fuel tank) fuel pump
(right front lower side of engine block) g109
(top of right cylinder bank)
Camshaft position (cmp) sensor (front of engine, above crank pulley)
Crankshaft position (ckp) sensor (front of engine, right of crank pulley)
Dsl ecm fuse 12 30a
Ecm batt fuse 11 15a
Ecm ign fuse 53 15a
Ecm/throt cont fuse 17 15a
Eng fuse 3 15a
Engine)
Exhaust gas recirculation (egr) temperature sensor 2 (top right front of engine)
Exhaust gas recirculation (egr) valve (on top right side of engine)
Fuel filter pressure switch (middle right right side of
Fuel injector 2 (above cylinder 2)
Fuel injector 3
Fuel injector 4 (above cylinder 4)
Fuel injector 5
Fuel injector 8 (above cylinder 8)
Fuel pump fuse 18 25a
Fuel pump relay
G103 (on front of right cylinder head)
G109 (right front lower side of engine block)
G300 (below driver's door, on body mount)
Hot at all times
Hot w/ run/crnk relay 15 energized
J105
J130
J160
J161
J162
M2 pnk
Nca
Pnk
Pwr/ trn relay
Tan
Trans ign 1 fuse 13 15a
Underhood fuse block (right side of firewall)
W/ 2 speed electric & manual shift control transfer case
W/o 2 speed electric & manual shift control transfer case
X107

6.6L VIN L, Engine Performance Wiring Diagram (6 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN L, Engine Performance Wiring Diagram (6 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(left side of oil pan) engine oil level switch
(pins 33-40 not used)
(pins 42-46 not used)
(pins 49-64 not used)
5 volt ref
Anti-lock brakes system
Dfi volt ctrl cyl 1
Dfi volt ctrl cyl 4
Dfi volt ctrl cyl 6
Dfi volt ctrl cyl 7
Dfi volt ctrl cyl 8
Engine control module (ecm) (left side of engine compt, near fan shroud)
Engine oil pressure (eop) sensor (lower left rear of engine)
Exhaust gas recirculation (egr) temperature sensor 1 (top of right rear of engine)
Fuel injector 1 (top of right cylinder bank)
Fuel injector 6 (above cylinder 6)
Fuel injector 7 (top of right cylinder bank)
Fuel pressure regulator 1
Fuel pressure regulator 2
Fuel pump rly ctrl
G109 (right front lower side of engine block)
G110 (left front lower side of engine block)
Gnd
J160
J161
J164
Low ref
Nca
Oil level sw sig
Sens volt ref
Sol high sig
Sol low sig
Sol sply volt
Tan
Turbocharger vane position control solenoid valve (top rear of engine)
Turbocharger vane position sensor (on left side of engine)
Valve high ctrl
Valve low ctrl
Vehicle spd sig
X110
X113

EXTERIOR LIGHTS

Backup Lamps Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Backup Lamps Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(6.6l)
(below driver's door, on body mount) g300
(diesel: right side of firewall)
(except 6.6l)
(if equipped) backup alarm
(in camper harness, 109.5 cm from x414 breakout) j415
(on front of right cylinder head) (except 4.3l) g103 g106 (4.3l) (right rear of engine)
(on lower left front of engine) (except 4.3l & 6.6l) g102
175a
Automatic transmission (6.0l hybrid)
Automatic transmission (6.6l)
Automatic transmission fluid pressure (tfp) manual valve position switch
Automatic transmission internal mode switch (ims)
Bck/up lamp pcb relay
Bck/up rly
Bck/up sig
Body control module (bcm) (lower left side of dash)
Camera
Computer data lines system
Control solenoid valve assembly
Data bus+
Data bus-
Decor level 3 convenience package
G103 (6.6l) (on front of right cylinder head)
G107 (4.3l) (top left rear of engine)
G401 (on left rear body mount)
Gmlan serial hi spd
Gnd
Grd
High speed bus (+)
High speed bus (-)
High speed gmlan serial data bus+
High speed gmlan serial data bus-
Hot at all times
If equipped
Inside rearview mirror (isrvm)
J105
J106
J410
Left backup lamp
Left i/p junction block (lower left side of dash)
Low speed serial data
Mjr
Nca
Park/neutral position (pnp) switch (on left rear side of transmission)
Pnk
Power distribution system
Rear lamps junction block (inside of left rear frame rail)
Rear view camera image display module (if equipped) (in chassis harness, center rear of vehicle)
Rearview camera (left of tailgate handle)
Red
Right backup lamp
Sw sig 4
Sw sig a
Sw sig b
Sw sig c
Tan
Trailer tow circuit
Trans range sig a
Trans range sig b
Trans range sig c
Transmission control module (4.3l & 4.8l) (left front of engine compt, near fan shroud)
Transmission control module (tcm)
Transmission control module (tcm) (left front of engine compt, near fan shroud)
Transmission range switch signal a
Transmission range switch signal b
Transmission range switch signal c
Trlr bck/up fuse 10 fuse 9 10a
Underhood fuse block (left side of engine compt)
Underhood fuse holder (gasoline: on positive battery terminal)
Veh bck/up fuse 15 fuse 14 10a
W/ comfort &
W/ rearview camera
W/ spo rearview
X10
X11
X175
X175 g
X209
X414

Exterior Lamps Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Exterior Lamps Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(in right end of dash) right i/p junction block
(on right front corner of hvac module) g200
(upper left corner of dash) g201
3a4
4.3l
4.8l (vin a) 6.2l (vin 2) 5.3l (vin 7) 5.3l (vin 0)
5v ref
6.0l (vin g)
6.6l (vin l) & 6.6l (vin 8)
Auto
Body control module (bcm) (lower left side of dash)
Bpp sens sig
Brake pedal position (bpp) sensor
Brk sply sig
Chevrolet
Computer data lines system
Data serial b+
Driver door lock/window switch
Driver outside rearview mirror
Electronic shift control transfer case
Engine control module (left front of engine compt)
G101 (except diesel: on lower right radiator support) (diesel: right front corner of engine compt)
G201 (upper left corner of dash)
Gmc
Ground distribution system
Hazard switch
Head
Headlamp & panel dimmer switch
Hot at all times
Hz sw
Hz sw l trn
Hz sw r trn
I/p fuse block (left side of dash)
Instrument panel cluster (ipc)
J201
J230
J502
J603
Left turn
Left turn ind
Logic
Low ref
Lt stop trn fuse 6 15a
Maj
Min
Nca
Off
Park
Park lp sig
Passenger door lock/window switch
Passenger outside rearview mirror
Rf trn sig
Right front side marker lamp
Right lower park/ turn signal lamp
Right turn
Right turn ind
Right upper park/ turn signal lamp
Rly ctrl
Rt stop trn fuse 8 15a
Sply volt
Tan
Turn signal/ multi-function switch (on left side of steering column)
Underhood fuse block (left side of engine compt)
W/ manual folding
W/ power folding
W/ power mirrors
W/ two speed push button &
W/o power mirrors
W/o two speed push button &
X106
X107
X109
X205

Exterior Lamps Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Exterior Lamps Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(4.3l) (top left rear of engine)
(not used)
(on lower left front of engine) (except 4.3l & 6.6l) g102
(on right front corner of hvac module) g200
6.6l
Center high mounted stop lamp x1 (chmsl)
Chevrolet
Chmsl fuse 49 fuse 46 15a
Chmsl pcb relay
Electronic brake control module (ebcm) (on left side of frame assembly)
Engine control module (left front of engine compt)
Except 6.6l
Except hybrid
G100 (except diesel: on lower left radiator support) (diesel: left front corner of engine compt)
G107 g103 (6.6l) (on front of right cylinder head)
Gmc
Ground distribution system
Hot at all times
Hybrid
Interior lights system
Ipc fuse 46 fuse 43 10a
J102
J105
J124 (in engine harness, approximately 7.5 cm from x109)
J328
Left front side marker lamp
Left i/p junction block (lower x9 left side of dash)
Left lower park/ turn signal lamp
Left upper park/ turn signal lamp
Lt prk fuse 26 fuse 23 15a
Maj
Min
Park lamp relay
Power distribution system
Power take off module (pto) (if equipped) (outside of right front chassis frame)
Rt prk fuse 27 fuse 24 15a
Trailer brake control module (if equipped) (left rear frame rail)
Trailer tow circuit
Trlr prk fuse 25 fuse 22 15a
Underhood fuse block (left side of engine compt)
W/ odometer security
X100
X102
X205
X300
X318

Exterior Lamps Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Exterior Lamps Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(diesel: right side of firewall)
(inside of left rear frame rail) rear lamps junction block
175a
2b2
A47
Breakout) j418
Breakout) j419
Chevrolet
Front middle roof clearance lamp
G200 (on right front corner of hvac module)
G300 (below driver's door, on body mount)
G401 (on left rear body mount)
Gmc
Grd
Hot at all times
If equipped
J334
J337
J411 (w/ trailer brake)
J412
Left backup lamp
Left front outer roof clearance lamp
Left front rear fender clearance lamp
Left license lamp
Left lower tail/ stop & turn signal lamp
Left rear most fender clearance lamp
Left rear side marker lamp
Left upper tail/ stop & turn signal lamp
Lower tail/ stop & turn signal lamp
Mjr
Mnr
Nca
Power distribution system
Rear lamps junction block (inside of left rear frame rail)
Rear lamps junction block (inside of left rear frame rail) x1
Right
Right backup lamp
Right front outer roof clearance lamp
Right front rear fender clearance lamp
Right i/p junction block (in right end of dash)
Right license lamp
Right rear most fender clearance lamp
Right rear side marker lamp
Right upper tail/ stop & turn signal lamp
Tailgate marker lamp
Underhood fuse holder (gasoline: on positive battery terminal)
W/ odometer security
W/ rear dual wheel
W/ rerar dual wheel
X415
X416
X416 b

Trailer Tow Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Trailer Tow Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(in camper harness, 109.5 cm from x414 breakout) j415
(in chassis harness) j422
6.6l
Anti-lock brakes system
Backup lamps circuit
Body control module (bcm) (lower left side of dash)
Except 6.6l
Exterior lights circuit
G200 (on right front corner of hvac module)
G401 (on left rear body mount)
Hot at all times
Hot w/ bck/up lamp relay energized
Hot w/ park lamp relay energized
J200
J410
J414 (in camper harness)
J416 (129.5 cm from x414 breakout)
J417
J420 (in camper harness, 59.5 cm from x414 breakout)
J421 (in camper harness, 205 cm from x414 breakout)
Lt trailer
Power distribution system
Rt trailer
Stud 1 fuse 68 fuse 63 40a
Stud 2 fuse 63 fuse 58 30a
Trailer brake controller solid state relay (20/30 series: left rear frame rail) (31 series: on left frame rail)
Trailer connector (w/ truck trailer wiring harness) (at rear of vehicle)
Trlr bck/up fuse 10 fuse 9 10a
Trlr lt stop/turn pcb relay
Trlr prk fuse 25 fuse 22 15a
Trlr rt stop/turn pcb relay
Trlr stop lt fuse 3 fuse 2 10a
Trlr stop rt fuse 1 fuse 4 10a
Turn sig lmp
Underhood fuse block (left side of engine compt)
W/ camper, 5th wheel trailer wiring provisions & 97 decibels electrical backup alarm
W/ trailer brake control
W/o trailer brake control
X115
X414

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Ground Distribution Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(automatic a/c) heater coolent pump
(diesel) fan relay
(diesel) reductant line heater
(diesel) reductant pump
(diesel) reductant tank heater
(hybrid propulsion) right generator control module coolant pump
(if equipped) left front fog lamp
(if equipped) right front fog lamp
(if equipped) right horn
(in auxiliary battery harness) j145
(left side of engine compt) auxiliary fuse block
(left side of engine compt) underhood fuse block
(w/ 2 speed electric
(w/ 2 speed manual shift control transfer case) transfer case shift control switch
(w/ 2 speed manual/electric
(w/ hybrid propulsion) left generator control module coolant pump
4.8l, 5.3l, 6.0l & 6.2l
A/c compressor clutch
Auxiliary battery relay (if equipped)
Auxiliary battery run relay (if equipped)
Battery current sensor (gasoline)
Bck/up lamp pcb relay
Chevrolet
Chmsl pcb relay
Cooling fan diode 1 (w/ 10 series)
Diesel
Diesel w/ auxiliary battery
Engine cooling fan (diesel)
Except diesel
Except hybrid
Except hybrid & w/ 10 series
Fan cntrl relay
Fan ctrl relay
Fan low relay
From ground g103 (diagram 2 of 6)
Front drive axle actuator
Front washer diode
Fuel pmp relay
G100 (except diesel: on lower left radiator support) (diesel: left front corner of engine compt)
G101 (except diesel: on lower right radiator support) (diesel: right front corner of engine compt)
G102 (except 4.3l) (lower left front of engine)
G104 (front of left cylinder head)
G107 (4.3l) (top left rear of engine)
G108 (on left side of firewall)
Gas
Gmc
Hood ajar switch
Hybrid
Ignition coil
J100 (in forward lamp harness, 7 cm from ambient air temperature sensor breakout)
J101 (in forward lamp harness)
J102 (in left headlamp harness)
J103 (in right headlamp harness)
J105 (4.3l (vin x): in engine 12 cm from ect harness, sensor breakout) (6.0l (vin j): in engine harness, approximately 18.5 cm from breakout to mass air flow/intake air temperature sensor)
J117
J141 (in pto jumper harness)
Left battery
Left engine cooling fan
Left engine cooling fan resistor
Left front side marker lamp
Left high beam headlamp
Left horn
Left low beam headlamp
Lower left park/turn signal lamp
Lower right park/turn signal lamp
Nca
Rear defog relay
Right battery
Right front side marker lamp
Right high beam headlamp
Right low beam headlamp
Run/ crnk relay
Shift control transfer case & active 2 speed push button control transfer case)
Strtr relay
To auxiliary fuse block (diagram 2 of 6)
To ground g103 (diagram 2 of 6)
To right engine cooling fan (diagram 2 of 6)
Transfer case shift control module
Upper left park/turn signal lamp
Upper right park/turn signal lamp
W/ dual battery
W/ keyless entry & pto
W/ pto
Windshield washer fluid level switch
Windshield washer fluid pump
Windshield wiper motor
Wiper control pcb relay
Wiper high speed diode
Wiper low speed diode
X1 a1
X1 b
X106 f
X109 b7
X110 d
X111 a
X113 a
X122 b
X124 d
X2 n5
X3 d
X395 a4

Ground Distribution Wiring Diagram (2 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Ground Distribution Wiring Diagram (2 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(4.8l/5.3l/ 6.2l) (4.3l/6.0l (vin g))
(diesel) reductant sensor module
(if equipped) garage door opener (gdo)
(if equipped) inflatable restraint i/p module indicator
(if equipped) power take off (pto) module
(if equipped) sliding rear window switch
(in engine harness, approximately 5 cm from automatic transmission auxiliary fluid pump control module breakout) (w/ hybrid propulsion) j122
(left side of engine compt) auxiliary fuse block
4.3l
6 speed a/t
Allison transmission 6 speed a/t
Automatic transmission
Automatic transmission auxiliary fluid pump control module
Bare
Body control module
Body control module (bcm)
Diesel
Engine control module
Engine control module (ecm)
Engine coolant level switch
Engine oil level (eol) switch
Except 4.3l
Except diesel
Except hybrid
Exhaust gas recirculation (egr) valve shield
Exhaust gas recirculation cooler bypass solenoid valve shield
Fan high relay
From splice j101 (diagram 1 of 6)
From splice j105 (diagram 1 of 6)
Front dome/ reading lamps
Fuel filter pressure switch
Fuel pressure regulator 1 shield
Fuel pressure regulator 2 shield
Fuse a 30a
Fuse c 30a
G103 (on front of right cylinder head)
G106 (right rear of engine)
G109 (diesel) (right front lower side of engine block)
G110 (diesel) (left front lower side of engine block)
Glow plug control module (gpcm)
Hybrid propulsion
Ignition control module (icm)
Intake air valve shield
J106 (except hybrid: in engine harness, 23 cm from map sensor breakout) (hybrid: in engine harness, approximately 8 cm from engine coolant temperature sensor breakout)
J118
J160
J161
J162
J164
J219 (in fuse block jumper harness)
J323 (in overhead console harness, 4 cm from x304 breakout)
Mass air flow (maf)/ intake air temperature (iat) sensors
Mobile radio fuse block (behind right side of dash)
Nca
Park/ neutral position switch
Relay a
Relay b
Right engine cooling fan
Right engine cooling fan resistor
Roof beacon relay
Roof beacon switch
Speed a/t
To right battery (diagram 1 of 6)
To splice j328 (diagram 3 of 6)
Transmission control module (tcm)
W/ hybrid propulsion ahs2
W/ roof mounted lamp
W/ wrecker emergency lamp, body builder emergency lamp & roof mounted lamp
Water in fuel sensor
X109 b5
X121
X179 n
X225
X226
X395 a1

Ground Distribution Wiring Diagram (3 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Ground Distribution Wiring Diagram (3 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(automatic a/c) inside air temperature sensor
(hybrid) serial data gateway (sdg) module
(if equipped) heated steering wheel
(if equipped) heated steering wheel control module
(if equipped) left sunshade
(if equipped) rearview camera
(in i/p harness, 13 cm from radio connector breakout) j203
(in steering wheel harness, 4 cm from inflatable restraint steering wheel module coil x2)
(on right front corner of hvac module) g200
(w/ 2 speed electric shift control transfer case & active 2 speed push button cintrol transfer case) transfer case shift control switch
(w/ wrecker emergency lamp) wrecker relay (w/ body builder emergency lamp) emergency vehicle roof lamp relay
3a7
4a7
Accessory dc power control module
Automatic a/c
Automatic transmission shift lock control solenoid
B x4
Bare
Blower motor control module
Center console accessory power outlet
Center console compartment accessory power outlet
Center high mounted stop lamp (chmsl)
Data link connector (dlc)
Driver information center (dic) switch
Electronic adjustable pedals pcb relay
Electronic compass module
Extended cab/crew cab
From splice j323 (diagram 2 of 6)
G112
G202
G403
Heater, accessory steering control & automatic cruise control
Horn switch
Hvac control module
Hybrid
I/p 1 accessory power outlet
I/p 2 accessory power outlet
Inflatable restraint steering wheel module coil
Inside rearview mirror (isrvm)
J200 (in i/p harness, 14 cm from left i/p junction block breakout)
J214
J215 (in steering column harness)
J324 (in sunroof harness, 3 cm from sunroof switch breakout)
J334 (in right "a" pillar harness)
Left front outer roof clearance lamp
Left i/p junction block (lower left side of dash)
Left steering wheel control switch
Manual a/c
Middle front roof clearance lamp
Nca
Park enable pcb relay
Passenger door lock/ window switch
Passenger outside rear view mirror
Passenger window switch
Rear dome/ reading lamps
Right front outer roof clearance lamp
Right i/p junction block (in right end of dash)
Right steering wheel control switch
Right sunshade (if equipped)
Sunroof module
Sunroof switch
To splice j350 (diagram 5 of 6)
W/ accessory steering control
W/ accessory steering control & w/ odometer security wiring provisions
W/ body builder emergency lamp
W/ comfort & decor level 3
W/ luxury edition
W/ manual folding mirror & heated mirror
W/ non bucket front individual seat & power mirrors
W/ roof marker lamp
W/ roof mounted lamp provisions
W/ steering wheel heater
W/ steering wheel heater & automatic cruise control
W/ steering wheel heater, accessory steering control & automatic cruise control
W/ sunroof mounted/sliding lamp provision
W/ sunroof mounted/sliding lamp provision w/o roof marker lamp
W/ sunroof sliding
W/ wrecker emergency lamp
W/o non bucket front individual seat & power mirrors
W/o steering wheel
W/o steering wheel heater
Wheel harness)
X1 a
X14
X2 d1
X2 k
X201 b6
X209
X224
X276 b
X277 b
X301
X313
X6 b

Ground Distribution Wiring Diagram (4 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Ground Distribution Wiring Diagram (4 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(crew cab & w/ non bucket front individual seats) lock/unlock pcb relay
(hybrid) a/c compressor
(if equipped) driver outside rearview mirror
(if equipped) outside rearview mirror switch
(if equipped) rearview camera image display module
(in left front door harness) j502
(not used) g1
(w/ side door lock control & w/o non bucket front individual seats & power mirrors) lock pcb relay
(w/ side door lock control & w/o non bucket front individual seats & power mirrors) unlock pcb relay
3a3
A2 x303
A2 x305
Ambient light sensor
Ambient light/ sunload sensor
Automatic a/c
Automatic transmission shift lever
Body control module (bcm)
Brake fluid level switch
Data link connector
Driver door latch
Driver door lock switch
Driver door lock/ window switch
Driver seat back ventilation heating & cooling module
Driver seat cushion ventilation heating & cooling module
Driver window switch
Except hybrid
Front door lock diode
Front door unlock diode
G201 (upper left corner of dash)
Headlamp & panel dimmer switch
Hvac control module
Hybrid
Hybrid & w/o non bucket front individual seat
I/p fuse block (left side of dash)
I/p multi-function switch
Instrument panel cluster (ipc)
J201 (in i/p harness, in headlight & dimmer switch breakout)
J230
Left i/p junction block (lower left side of dash)
Manual a/c
Nca
Passenger door latch
Passenger door lock switch
Passenger seat adjuster switch
Passenger seat back ventilation heating & cooling module
Passenger seat cushion ventilation heating & cooling module
Passenger seat lumbar switch
Rear door lock diode
Rear door unlock diode
Right i/p junction block (in right end of dash)
Theft deterrent module
To splice j304 (diagram 6 of 6)
Turn signal/ multi-function switch
W/ engine brake exhust, rear parking assist, active brake control & power adjustable pedals
W/ front heated/ cooling seats
W/ non bucket front individual seat
W/ power door lock control
W/ power window
W/o non bucket, front individual seat, w/ comfort & decor level 3
W/o power door lock control
W/o power window
Windshield wiper motor
X1 e1
X1 k2
X201 a5
X305

Ground Distribution Wiring Diagram (5 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Ground Distribution Wiring Diagram (5 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(if equipped) backup alarm
(if equipped) digital radio receiver
(if equipped) rear seat audio (rsa) control
(if equipped) vehicle communication interface module (vcim)
(in camper harness, 232.5 cm from x414 breakout) j410
(not used)
(w/ premium performance enhanced audio) audio amplifier
(w/o luxury edition & odometer security)
4.3l
6.0l (vin g)
Chevrolet
Chime module
Diesel
Diesel, w/ 31 series & w/o rear auxiliary fuel tank
Digital video disc (dvd) control module
Driver heated seat switch
Electronic brake control module (ebcm)
Except 4.3l & 6.0l (ving)
From park enable pcb relay left i/p junction block (diagram 3 of 6)
Front fuel pump & sender assembly
Fuel pump
Fuel pump flow control module
Fuel pump/ trailer brake control module
G300 (below driver's door, on body mount)
G301 (below left side of passenger's seat)
Gas
Gmc
Grd
Heated seat control module
Infrared transmitter
J300 (in chassis harness, 15 cm from g300 breakout)
J307
J330 (in console harness, 12 cm from audio amplifier breakout)
J350 (heated seat body harness, 5 cm into x332 breakout)
Left i/p junction block (lower left side of dash)
Lower right tail/ stop & turn signal lamp
Nca
Passenger heated seat switch
Radio
Rear fuel pump & sender assembly
Rear lamps junction block (inside of left rear frame rail)
Right backup lamp
Right rear side marker lamp
Secondary fuel pump relay
To ground g401 (diagram 6 of 6)
Trailer connector
Upper right tail/ stop & turn signal lamp
Video display
W/ active brake & w/o 10 series
W/ active brake, hybrid, 10 series & vacuum power brake
W/ camper, 5th wheel trailer
W/ camper, 5th wheel trailer & backup alarm
W/ dual front door mounted & 4 speaker system
W/ hydraulic power brake
W/ integrated trailer brake
W/ luxury edition
W/ luxury edition & rear seat entertainment package
W/ performance enhanced audio
W/ radio
W/ rear auxiliary fuel tank
W/ spo dvd
W/ spo heated seats
W/o camper, 5th wheel trailer & backup alarm
W/o integrated trailer brake
W/o luxury edition
W/o luxury edition & w/ rear seat entertainment package
W/o performance enhanced audio
W/o radio
W/o rear auxiliary fuel tank
W/o rear auxiliary fuel tank 6.0l (vin g)
W/o rear seat radio & luxury edition
X1 a5
X1 b
X12
X129
X2 d
X204 m
X212
X331 b
X414 b

Ground Distribution Wiring Diagram (6 of 6) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Ground Distribution Wiring Diagram (6 of 6) for GMC Cab & Chassis Sierra HD 2012 3500:

(if equipped) driver seat adjuster switch
(if equipped) sliding rear window close relay
(if equipped) sliding rear window open relay
(in body harness, 14 cm from passenger seat in-line connector breakout)
(in sliding rear window jumper harness)
(w/ active brake control) yaw & lateral accelero-meter sensor
(w/ door ajar indicator) remote control door lock receiver (rcdlr)
6.6l & 6.0l (vin g)
A x700
A x800
B x319
B x415
B x416
B3 x305
B8 x303
Center console accessory power outlet
Center seat accessory power outlet
Chevrolet
Console compartment accessory power outlet
Crew cab
Crew cab/ extended cab w/ performance enhanced audio & front compartment console
Directional passenger power seat adjuster
Driver motor battery positive high voltage contractor relay
Driver motor generator battery
Driver motor generator battery control module
Driver motor power inverter current limit relay
Driver seat adjuster switch
E x1
Except crew cab
Except hybrid
Except regular cab
Extended cab
From splice j302 (diagram 6 of 6)
From splice j314 (diagram 4 of 6)
From splice j410 (diagram 5 of 6)
Front passenger/child presence detector
G302 (below right side of passenger's seat)
G303 (extended cab/crew cab) (on lower left "b" pillar)
G304 (on lower right "b" pillar)
G307 (at right rear corner of passenger compt)
G311
G312
G401 (on left rear body mount)
G404 (mounted on fuel filler neck)
Generator battery vent fan
Gmc
Grd
Hybrid
Hybrid except hybrid
Inflatable restraint passenger presence system (pps) module
Inflatable restraint sensing & diagnostic module (sdm)
J304
J335
J355
Left backup lamp
Left front rear fender clearance lamp
Left license lamp
Left rear door latch
Left rear most fender clearance lamp
Left rear side marker lamp
Left rear window switch
Lower left tail/ stop & turn signal lamp
M x800
Memory seat module (msm)
Nca
Passenger seat belt buckle
Rear lamps junction block (inside of left rear frame rail)
Rear object sensor control module
Rear window defogger grid
Regular cab
Right front rear fender clearance lamp
Right license lamp
Right rear door latch
Right rear most fender clearance lamp
Right rear window switch
Tailgate marker lamp
To driver motor generator battery (diagram 6 of 6)
To ground g312 (diagram 6 of 6)
Trailer brake control module
Trailer brake control relay
Upper left tail/ stop & turn signal lamp
W/ full feature center seat
W/ multi-
W/ non bucket front individual seat
W/ non-bucket front individual seat
W/ power windows & full feature center seat
W/ rear defogger
W/ rear dual wheel
W/ rear parking assist, low tire pressure & remote entry
W/ remote entry lock control low tier pressure indictor, active brake control & w/ rear park assist
W/ trailer brake
W/active brake
W/o active brake
W/o multi- directional passenger power seat adjuster
W/o non-bucket front individual seat
W/o power windows & full feature center seat
W/o rear defogger
W/o rear parking assist, low tire pressure & remote entry
W/o remote entry lock control low tier pressure indictor, active brake control & w/o rear park assist
W/o trailer brake
X2 a
X303 f
X305
X305 h
X319 b
X320 b
X350
X700 a
X700 m

HEADLIGHTS

Headlights Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Headlights Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(except diesel: on lower left radiator support) (diesel: left front corner of engine compt)
(except diesel: on lower right radiator support) (diesel: right front corner of engine compt) g101
175a
Amb lght
Body control module (bcm) (lower left side of dash)
Chevrolet
Computer data lines system
Diesel
Dimmer switch
Drl 2 fuse 33 fuse 30 10a
Drl rly
Flash
Flash to pass
Fog lmp rly
Fog lp sw
G100
G100 (except diesel: on lower left radiator support) (diesel: left front corner of engine compt)
G101 (except diesel: on lower right radiator support) (diesel: right front corner of engine compt)
G201 (upper left corner of dash)
Gasoline
Gmc
Hdlp dim sw sig
Hdlp lo/hid relay
Hdlp off
Hdlp on
Headlamp
Hi beam pcb relay
Hi beam rly
Hi head- lamp lt fuse 32 fuse 29 10a
Hi head- lamp rt fuse 30 fuse 21 10a
Hot at all times
If equipped
J100
J101
J102
J103
J230
Left front side marker lamp
Left high beam headlamp
Left low beam headlamp
Lo beam rly
Lo hdlp lt fuse 12 20a
Lo hdlp rt fuse 16 fuse 15 20a
Lower left park/turn signal lamp
Lower right park/turn signal lamp
Multi-function switch
Pk brake sig
Power distribution system
Prk lmp
Right front side marker lamp
Right high beam headlamp
Right low beam headlamp
Serial data +
Serial data -
Switch
Tan
To fog lamp relay (diagram 2 of 2)
To pass
Turn signal/
Underhood fuse block (left side of engine compt)
Underhood fuse holder (diesel: right side of firewall) (except diesel: on positive battery terminal)
Upper left park/turn signal lamp
Upper right park/turn signal lamp
X100
X106
X106 a
X202

Headlights Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Headlights Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

Ambient light sensor (manual a/c) ambient light/ sunload sensor assembly (automatic a/c) (top center of dash)
Auto
Automatic a/c
Computer data lines system
Diesel
Drl fuse 31 fuse 28 10a
Drl pcb relay
Fog lamp fuse 26 fuse 25 15a
Fog lamp ind
Fog lamp relay
Fog lamp switch
From hdlp lo/hid relay (diagram 1 of 2)
G100 (except diesel: on lower left radiator support) (diesel: left front corner of engine compt)
G101 (except diesel: on lower right radiator support) (diesel: right front corner of engine compt)
G201 (upper left corner of dash)
Gasoline
Gmlan serial data
Ground distribution system
Head
Headlamp & panel dimmer switch
Hi beam ind
If equipped
Instrument panel cluster (ipc)
Ipc fuse 46 fuse 43 10a
J201
Left front fog lamp (if equipped)
Left i/p junction block (lower left side of dash)
Logic
Manual a/c
Off
Park
Park brake switch (on park brake pedal assembly)
Power distribution system
Right front fog lamp (if equipped)
Underhood fuse block (left side of engine compt)

HORN

Horn Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Horn Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(diesel)
(gas)
(on right front corner of hvac module)
175a
B x1
Body control module (lower left side of dash)
G100 (except diesel: on lower left radiator support) (diesel: left front corner of engine compt)
G101 (except diesel: on lower right radiator support) (diesel: right front corner of engine compt)
G200
Ground distribution system
Horn fuse 29 fuse 26 15a
Horn pcb relay
Horn relay ctrl
Horn switch
Hot at all times
Inflatable restraint steering wheel module coil (behind steering wheel)
J x2
J100
J101
J200
J214
J215
Left horn (lower left front of vehicle)
Power distribution system
Right horn (lower right front of vehicle)
Tan
Underhood fuse block (left side of engine compt)
Underhood fuse holder (on positive battery terminal)
W/ high note dual horn & comfort, decor level 3 convenience package
W/ horn/siren circuit wiring provisions
W/ steering wheel heater
W/ steering wheel heater, accessory steering control & automatic cruise control
W/o steering wheel heater
W/o steering wheel heater, accessory steering control & automatic cruise control
X201
X207
X4 g1

INSTRUMENT CLUSTER

Instrument Cluster Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Instrument Cluster Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(on lower left front of engine) (except 6.6l & 4.3l) g102
(top left rear of engine) (4.3l) g107
4wd ind
6.6l
Abs ind
Air bag ind
Aux hvac-ign fuse 48 fuse 45 10a
Body control module (bcm) (lower left side of dash)
Brake fluid level switch (on brake master cylinder reservoir)
Brake ind
Brk fld sig
Brk sw ctrl
Charge ind
Computer data lines system
Coolant temperature gauge
Cruise ind
Decor level 3 convenience package
Dic sw sig
Dr door
Driver information center (dic)
Electronic compass module
Engine controls system
Except 6.6l
Exhaust, rear parking assist, active brake control & power adjustable pedal
Fog lamp ind
Fuel gauge
G103 (6.6l) (on front of right cylinder head)
G200 (on right front corner of hvac module)
G201 (upper left corner of dash)
Gmlan serial
Gnd
High beam ind
Hot at all times
I/p multi-function switch
Ign
Ign 1
Ign volt
Instrument panel cluster (ipc)
Interconnect network bus
Interior lights system
Ipc fuse 46 fuse 43 10a
J105
J201
J220 (w/ steering wheel heater)
J328
Led cntrl
Left i/p junction block (lower left side of dash)
Left i/p junction block (lower left side of dash) x1
Left turn ind
Lf dr sw
Linear
Logic
Low oil ind
Low ref
Low washer
Lr dr sw
Malfunction ind (mil)
Mil cntrl
Network bus
Odometer
Oil gauge
Park brake switch (on park brake pedal assembly)
Pass off ind ctrl
Pass on ind ctrl
Pass seat belt
Pass seat belt ind
Pnk
Power distribution system
Rf dr sw
Right turn ind
Rr dr sw
Run/ crnk relay
Run/crk
Seat belt ind
Security ind
Speedometer
Sw sig
Tachometer
Tan
Tire pressure ind
Tow/haul ind
Traction control ind
Transmission temperature gauge
Underhood fuse block (left side of engine compt)
Volts gauge
W/ comfort &
W/ engine brake
Wait to start ind (6.6l)
Wait to strt
Wiper/washer system
X10
X202 b7

Instrument Cluster Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Instrument Cluster Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(6.6l)
(in chassis harness) j331
(in front fuel tank) front fuel pump & sender assembly
(in rear fuel tank) rear fuel pump & sender assembly
(in rear of driver's front door) (w/ bucket seats & power mirrors) driver door latch assembly
(inside fuel tank) primary fuel level sensor
(on lower left "b" pillar) g303
(on right front corner of hvac module) g200
(rear of left rear door) (crew cab) left rear door latch assembly
(rear of right rear door) (crew cab) right rear door latch assembly
(w/ dual fuel tank) secondary fuel level sensor
(w/ power windows) j502
3a5
4.3l
4.3l except
4.8l, 5.3l, 6.2l
5v ref
6.0l (vin g)
6.0l (vin j)
6.6l
Computer data lines system
Driver door latch assembly (w/o bucket seats & power mirrors) (in rear of driver's front door)
Driver door lock/window switch
Driver information center (dic) switch (w/ accessory steering control & odometer security wiring provisions)
Engine control module (ecm) (except hybrid: left front of engine compt, near fan shroud) (hybrid: left front of engine compt)
Engine oil level (eol) switch (left side of b engine oil pan)
Engine oil pressure (eop) sensor (6.6l: lower left rear of engine) (4.3l: rear of engine) (except 6.6l & 4.3l: top rear of engine)
Except hybrid
Fuel lvl sig
G110 (left front lower side of engine block)
G201 (upper left corner of dash)
G304 (on lower right "b" pillar)
Hybrid
I/p fuse block (left side of dash)
Information vehicle
Interior lights system
J203
J602 (w/ power door lock control)
Lo ref
Low ref
Oil lvl sig
Oil press sig
Passenger door latch assembly (w/ bucket seats & power mirrors) (in rear of passenger's front door)
Passenger door latch assembly (w/o bucket seats & power mirrors) (in rear of passenger's front door)
Passenger door lock/window switch
Personali- zation
Pnk
Right i/p junction block (in right end of dash)
Ser data
Serial data
Set/ reset
Sw sig
Trip/fuel
W/ 10 series
W/ dual fuel tank
W/ electronic door lock control
W/o 10 series
W/o electr0nic door lock control
X113
X131
X202
X300
X501
X700
X800

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram, with Bucket Seats & Power Mirrors for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Courtesy Lamps Wiring Diagram, with Bucket Seats & Power Mirrors for GMC Cab & Chassis Sierra HD 2012 3500:

(in headliner harness, 15 cm from front inside air temperature sensor breakout) j327
(not used)
(rear of driver's door) driver door latch assembly
(w/ power windows) j502
3 convenience package
3a5
Body control module (bcm) (lower left side of dash)
Center high mounted stop lamp (chmsl)
Computer data lines system
Courtesy lp sply volt
Def sw
Defeat sw
Dim fuse 7 10a
Dome lamps
Dome sw
Dr door rf dr ajar sw sig
Except hybrid
Front dome/reading lamps
G200 (on right front corner of hvac module)
G201 (upper left corner of dash)
G303 (on lower left "b" pillar)
G304 (on lower right "b" pillar)
Headlamp & panel dimmer switch
Hot at all times
Hybrid
I/p fuse block (left side of dash)
Is lps fuse 17 10a
J201
J323
J328
J602 (w/ power door lock control)
Left i/p junction block (lower left side of dash)
Left rear door latch assembly (crew cab) (rear of left rear door)
Left sunshade (if equipped)
Left vanity mirror lamp
Lf dr ajar
Lp ctrl sply
Nca
Passenger door latch assembly (in rear of passenger's door)
Reading lamps
Rear dome/ reading lamps (extended cab & crew cab)
Right i/p junction block (in right end of dash)
Right rear door latch assembly (crew cab) (rear of right rear door)
Right sunshade (if equipped)
Right vanity mirror lamp
Rr dr ajar sw sig lr dr ajar sw sig
Serial data
Sw sig
Volt
W/ comfort & decor level
W/ electric door lock
W/o comfort & decor level
W/o electric door lock
X10
X12
X202
X304
X318
X501
X700
X800

Courtesy Lamps Wiring Diagram, without Bucket Seats & Power Mirrors for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Courtesy Lamps Wiring Diagram, without Bucket Seats & Power Mirrors for GMC Cab & Chassis Sierra HD 2012 3500:

(in headliner harness, 15 cm from front inside air temperature sensor breakout) j327
(in right end of dash) right i/p junction block
(not used)
(on right front corner of hvac module) g200
3 convenience package
3b2
4a7
Body control module (bcm) (lower left side of dash)
Center high mounted stop lamp (chmsl)
Computer data lines system
Courtesy lp
Courtesy lp ctrl
Courtesy lp sply volt x6
Ddm fuse 4 15a
Def sw
Defeat sw
Dim fuse 7 10a
Dome lamp
Dome sw
Driver door latch assembly (in rear of driver's frontdoor)
Driver door lock/window switch
Front dome/reading lamps
G200 (on right front corner of hvac module)
G201 (upper left corner of dash)
G303 (on lower left "b" pillar)
G304 (on lower right "b" pillar)
Gnd
Headlamp & panel dimmer switch
Hot at all times
I/p fuse block (left side of dash)
Is lps fuse 17 10a
J201
J323
J328
Left i/p junction block (lower left side of dash)
Left rear door latch assembly (crew cab) (rear of left rear door)
Left sunshade (if equipped)
Left vanity mirror lamp
Low ref
Lr dr ajar sw sig
Nca
Passenger door latch assembly (in rear of passenger's front door)
Passenger door lock/window switch
Pdm fuse 9 15a
Power distribution system
Reading lamps
Rear dome/ reading lamps (extended cab & crew cab)
Right rear door latch assembly (crew cab) (rear of right rear door)
Right sunshade (if equipped)
Right vanity mirror lamp
Rr dr ajar
Ser data
Serial data
Sply volt
Sw sig
Volt
W/ comfort & decor level
W/ individual front seat & power mirror
W/o comfort & decor level
X10
X12
X304
X318
X700
X800

Instrument Illumination Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Instrument Illumination Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(automatic a/c)
(behind steering wheel)
(heated seat body harness, 10 cm into heated seat switches breakout) (w/ spo heated seats) j352
(heated seat body harness, 5 cm into heated seat switches breakout) (w/ spo heated seats) j351
(lower left side of dash) left i/p junction block
(on right front corner of hvac module)
(on right front corner of hvac module) g200
12v
A14
Anti-lock brakes system
Auto
Body control module (bcm) (lower left side of dash)
Bus led dim
Computer data lines system
Dim cntrl
Dim ctrl
Dim fuse 10a
Dim sig
Driver heated seat switch (w/ spo heated seats)
Driver information center (dic) switch (w/ accessory steering wheel control)
Exhaust brk sw sig x4
G200
G200 (on right front corner of hvac module)
G201 (upper left corner of dash)
Garage door opener & rear power sliding window
Head
Headlamp & panel dimmer switch
Heated seats w/ spo
Hot at all times
Hvac control module (if equipped)
I/p fuse block (left side of dash)
I/p multi-function switch
Ind ctrl
Inflatable restraint steering wheel module coil x2
Instrument panel cluster (ipc)
Is lps fuse 10a
J201
J203
J214
J218 (in steering wheel harness, 9 cm from inflatable restraint steering wheel module coil x2)
J350
Left steering wheel control switch
Logic
Low ref
Manual a/c & w/ spo heated seats
Manual a/c & w/o spo heated seats
Off
Park
Passenger heated seat switch (w/ spo heated seats)
Power take off (pto) module (outside of right front chassis frame)
Power take off (pto) switch (if equipped)
Prk lp sig
Radio
Rear object sensor control module (rear parking assist) (at rear cargo area, behind trim panel)
Right steering wheel control switch
Rr prk assist x2
Serial data
Swc bklt fuse 3 2a
Tan
Trailer brake control module (except 10 series) fuel pump/trailer brake control module (10 series) (10 series: rear frame, (near spare tire mount) (20/30 series: left rear frame rail) (31 series: on left frame rail)
Trailer brake control switch (if equipped)
W/ accessory steering control & w/ adometer security wiring provisions
W/ accessory steering wheel control
W/ active brake control, adjustable power pedals, rear parking assist sensor indicator & heated windshield washer nozzles & hybrid
W/ automatic cruise control, steering wheel heater & accessory steering wheel control
W/ electric door lock control
W/ luxury edition & odometer security
W/ power windows w/o individual front seat & power mirror
W/ roof mounted lamp, universal
W/ spo heated seats
W/ trailer brake control
W/o accessory steering wheel control
W/o individual front seat & power mirror
W/o spo heated seats
X10
X102
X11
X123
X201
X202
X205
X212
X333
X334

Instrument Illumination Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Instrument Illumination Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

& power mirror
(if
(in right end of dash) right i/p junction block
(w/ power door lock)
2 hi
2b4
3b5
4 hi
4 lo
4wd
Auto
Auto 4x4
Awd
Crew cab
Driver door lock switch
Driver window switch
Electronic 4x4
Equipped)
Extended cab
G200 (on right front corner of hvac module)
G201 (upper left corner of dash)
G303 (on lower left "b" pillar)
G304 (on lower right "b" pillar)
Garage door opener (gdo) (if equipped)
J200
J322 (in overhead console harness, 5 cm from x304 breakout)
J323
J324
J602
J603
J604 (in right front door harness)
Lamp, universal garage door opener & rear power sliding window
Left rear window switch
Logic
Outside rearview mirror switch
Passenger door lock switch
Passenger window switch
Pnk
Right rear window switch
Roof beacon switch (w/ wrecker emergency lamp, body builder emergency lamp & roof mounted lamp)
Seat & power mirror
Sliding rear window switch (if equipped)
Sunroof switch (if equipped)
Transfer case shift control module (lower left side of dash)
Transfer case shift control switch (on top left of transfer case)
W/ electric door lock control
W/ power windows
W/ power windows,
W/ roof mounted
W/o individual front
W/o individual front seat & power mirror
X304
X313
X700
X800

MEMORY SYSTEMS

Adjustable Pedal Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Adjustable Pedal Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(in driver seat harness, 5 cm from driver seat adjuster assembly)
(lower left side of dash)
12v ref
5v ref
A15
Buckle) j312
Computer data lines system
Driver door lock/window switch
Driver memory/heated seat switch
Driver seat 2 circuit breaker cb3 25a
Driver's memory seat circuit
Dsm fuse 25 10a
Electronic adjustable pedal (eap) assembly (under left side of dash)
Exit
Fwd ctrl
G303 (on lower left "b" pillar)
Gnd
Hot at all times
I/p fuse block (left side of dash)
I/p multi-function switch
J306
J309 (in driver seat harness, 20 cm from x303)
J310
Left i/p junction block (lower left side of dash)
Left i/p junction block x2
Logic
Low ref
Memory seat module (msm) (under front of driver's seat)
Pnk
Power distribution system
Rwd ctrl
Rwd sig
Sens sig
Ser data
Serial data
Sw sig
Tan
Tan a14
X12
X13
X303

Driver"s Memory Seat Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Driver"s Memory Seat Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(in driver seat harness, 20 cm from x303) j309
(in driver seat jumper harness, 10 cm into x324 breakout)
(in driver seat jumper harness, 5 cm into x324 breakout)
(in driver's seat back)
(lower left side of dash) left i/p junction block
12v ref
5 cm from driver seat adjuster assembly)
5v ref
A14
A15
Adjustable pedals circuit
Down ctrl
Driver seat 2 circuit breaker cb3 25a
Driver seat adjuster assembly (on driver's seat track)
Driver seat lumbar horizontal motor
Driver seat lumbar horizontal motor position sensor (in driver's seat track)
Driver seat lumbar vertical motor (in driver's seat back)
Driver seat lumbar vertical motor position sensor (in driver's seat track)
Driver seat recline motor (lower right side of driver seat back)
Driver seat recline position sensor (in driver's seat back)
Dsm fuse 25 10a
Electronic adjustable pedal (eap) assembly (if equipped) (under left side of dash)
Element ctrl
Fwd ctrl
G303 (on lower left "b" pillar)
Gnd
Hot at all times
I/p fuse block (left side of dash)
J306
J340
J341
Left i/p junction block (lower left side of dash)
Memory seat module (under front of driver's seat)
Pnk
Power distribution system
Rwd ctrl
Seats system
Sens sig
Sply volt
Tan
Temp sig
Up ctrl
X12
X13
X303
X324

Driver"s Memory Seat Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Driver"s Memory Seat Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(not used)
(not used) b
12v ref
Adjustable pedals circuit
Computer data lines system
Down
Down sw sig
Driver door lock/ window switch
Driver memory/heated seat switch
Driver seat adjuster switch
Driver seat lumbar switch
Exit
Frt vert dn sw
Frt vert up sw
Fwd
Fwd sig
Fwd sw sig
Horz fwd sig
Horz rwd sig
I/p multi-function switch (w/ adjustable pedal)
J312 (in driver seat harness, 5 cm from driver seat belt buckle)
Left i/p junction block (lower left side of dash)
Lh seat sig
Logic
Low ref
Memory seat module (under front of driver's seat)
Pnk
Recln fwd sig
Recln rwd sig
Rh seat sig
Rr vert dn sw
Rr vert up sw
Rwd
Rwd sig
Rwd sw sig
Seats system
Serial data
Sw sig
Tan
Up sw sig
X13
X303

Memory Mirrors Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Memory Mirrors Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

12v ref
5v ref
Automatic day/night mirror
Computer data lines system
Ddm fuse 4 15a
Defogger switch
Down
Driver door lock/ window switch
Driver door lock/window switch
Driver memory/heated seat switch
Driver outside rearview mirror
Electrochromic mirror circuit
Exit
Extend
Extend ctrl
Exterior lights system
G201 (upper left corner of dash)
Gnd
Hot at all times
Hvac control module
I/p fuse block (left side of dash)
J500 (in driver's outside rearview mirror jumper)
J501 (in driver's outside rearview mirror jumper)
L/r select
Left
Logic
Low ref
Mtr comm
Outside rearview mirror switch
Pnk
Position ctrl
Retract
Retract ctrl
Right
Sens sig
Serial data
Sply volt
Sw pwr
Sw sig

Memory Mirrors Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Memory Mirrors Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

3b2
4a7
5v ref
Computer data lines system
Extend ctrl
Exterior lights system
G200 (on right front corner of hvac module)
Gnd
Ground distribution system
Hot at all times
I/p fuse block (left side of dash)
J600 (in passenger's outside rearview mirror jumper)
J601 (in passenger's outside rearview mirror jumper)
Low ref
Mtr comm
Passenger door lock/ window switch
Passenger outside rearview mirror
Pdm fuse 9 15a
Position ctrl
Power distribution system
Retract ctrl
Right i/p junction block (in right end of dash) x6
Sens sig
Serial data
Sply volt

NAVIGATION

Navigation Wiring Diagram, with UYS & UQA, without Y91 (1 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Navigation Wiring Diagram, with UYS & UQA, without Y91 (1 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(pins: 21-27 not used)
Amp ctrl
Amp fuse 41 fuse 38 30a
Antenna
Coax
Computer data lines system
Diesel
Drain wire
G200 (on right front corner of hvac module)
Gasoline
Gmlan
Gnd
Hot at all times
Inside rearview mirror (isrvm)
J328
Left i/p junction block (lower left x3
Lf aud+
Lf aud-
Logic
Low ref
Lr aud+
Lr aud-
Nca
Onstar button assembly
Radio
Rdo fuse 42 fuse 39 15a
Rem sig
Rf aud+
Rf aud-
Rr aud+
Rr aud-
Side of dash)
Tan
Underhood fuse block (left side of engine compt)
Usb cable
Usb receptacle (if equipped)
Voice sig
X203
X212
X265

Navigation Wiring Diagram, with UYS & UQA, without Y91 (2 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with UYS & UQA, without Y91 (2 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of roof)
(lower left side of dash) left i/p junction block
Aud sig
Cellular telephone microphone (in overhead console)
Cellular/ navigation & digital radio antenna
Cellular/ navigation antenna
Coax
Computer data lines system
Dash)
Digital audio system
Drain wire
G nca
G301 (below left side of passenger's seat)
Gmlan
Gmlan+
Gmlan-
Gnd
Green led
Hot at all times
I/p fuse block (left side of
Info fuse 22 10a
J307
Keypad sig
Low ref
Nca
Pins: 6-16 not used
Pnk
Red led
Tan
Vehicle communication interface module (vcim) (behind center of dash)
Voice sig
W/ on star
W/ onstar
W/ s-band & traffic
W/o onstar
W/o s-band & traffic
X12
X203
X204
X212
X213 coax
X301
X304

Navigation Wiring Diagram, with UYS & UQA, without Y91 (3 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Navigation Wiring Diagram, with UYS & UQA, without Y91 (3 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(under rear of center console) audio amplifier
2a1
A13
A14
Ampl cntrl
Computer data lines system
Drain wire
G301 (below left side of passenger's seat)
Gmlan
Gnd
H nca
Hot at all times
I/p fuse block (left side of dash)
Infrared ref
Infrared v
J/b (lower left side of dash)
J330
L infrared
L subwfr+
L subwfr-
Lf aud+
Lf aud-
Lf spk+
Lf spk-
Lr aud+
Lr aud-
Nca
Package
Pnk
R infrared
R subwfr+
R subwfr-
Rear seat audio (rsa) control
Rem enable
Rf aud+
Rf aud-
Rf spk+
Rf spk-
Right i/p j/b (in right end of dash)
Rr aud
Rr aud+
Rr aud-
Rse fuse 19 5a
Subwoofer speaker
Tan
W/ rear seat entertainment
X12
X202
X204
X212
X301

Navigation Wiring Diagram, with UYS & UQA, without Y91 (4 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with UYS & UQA, without Y91 (4 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

3a1
3a2
Aud low ref
B10
B11
B12
Crew cab
Dvd comm
Extended cab
Gnd
I/p fuse block (left side of dash)
Infrared transmitter
L aud sig
L dvd+
Left front speaker
Left front tweeter speaker
Left rear speaker
Nca
Nca b+
Nca dvd+
Nca dvd-
Nca gnd
Nca video cntrl
Nca video sig
Pnk
R aud sig
R dvd+
Right front speaker
Right front tweeter speaker
Right i/p junction block (in right end of dash)
Right rear speaker
Shield)
Signal+
Signal-
Tan
Video display
Volt
X204
X206
X212
X301
X306
X700
X800

Navigation Wiring Diagram, with UYS & UQA, without Y91 (5 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with UYS & UQA, without Y91 (5 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(in steering wheel harness, 9 cm from inflatable restraint steering wheel module coil x2)
12 volt
Accessory steering wheel control
Anti-lock brakes system
Audio/video adapter
Aux vid h
Aux video h
Body control module (bcm) (lower left side of dash)
Camera sig (+)
Camera sig (-)
Computer data lines system
Cruise control system
Data bus (+)
Data bus (-)
Drain wire
Dvd aud com
Dvd aud sh
Dvd+
Dvd-
Inflatable restraint steering wheel module coil (if equipped) (behind steering wheel)
Infrared+
Infrared-
J216 (in steering column harness)
J217
L aux aud
L aux audio
L dvd+
Navigation system
Nca
Next
Pnk
R aux aud
R aux audio
R dvd+
Radio
Right steering wheel control switch
Seek
Source
Sw sig
Tan
Transmissions system
Video cntrl
Video sig
Voice rec
Voice sig/ drainwire
Voice sig/ low ref
Volume down
Volume up
Vss
W/ automatic cruise control
W/ automatic cruise control/
W/o automatic cruise control
X203
X301

Navigation Wiring Diagram, with UYS without Y91 & UQA (1 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with UYS without Y91 & UQA (1 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(pins: 21-27 not used)
Antenna
Coax
Computer data lines system
Diesel
Dnd
G200 (on right front corner of hvac module)
Gasoline
Gmlan
Hot at all times
Inside rearview mirror (isrvm)
J328
Lf spk+
Lf spk-
Logic
Low ref
Lr aud+
Lr aud-
Onstar button assembly
Radio
Rdo fuse 42 fuse 39 15a
Rf spk+
Rf spk-
Rr aud+
Rr aud-
Tan
Underhood fuse block (left side of engine compt)
Usb cable
Usb receptacle (if equipped)
Voice sig
X203
X212
X265

Navigation Wiring Diagram, with UYS without Y91 & UQA (2 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with UYS without Y91 & UQA (2 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of roof)
(lower left side of dash) left i/p junction block
(or nca)
(pins: 6-16 not used)
Aud sig
Cellular telephone microphone (in overhead console)
Cellular/ navigation & digital radio radio antenna
Cellular/ navigation antenna
Coax
Computer data lines system
Drain wire
G nca
G301 (below left side of passenger's seat)
Gmlan
Gmlan+
Gmlan-
Gnd
Green led
Hot at all times
I/p fuse block (left side of dash)
Info fuse 22 10a
J307
Keypad sig
Low ref
Nca
Pnk
Red led
Tan
Vehicle communication interface module (vcim) (behind center of dash)
Voice sig
W/ on star
W/ onstar
W/ s-band & traffic digital audio system
W/o onstar
W/o s-band & traffic digital audio system
X12
X203
X204
X212
X213
X304

Navigation Wiring Diagram, with UYS without Y91 & UQA (3 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with UYS without Y91 & UQA (3 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

2a1
A13
A14
Computer data lines system
Drain wire
G301 (below left side of passenger's seat)
Gmlan
Gnd
Hot at all times
I/p fuse block (left side of dash)
Infrared ref
Infrared v
J330
L infrared
Nca
Pnk
R infrared
Rear seat audio (rsa) control
Right i/p j/b (in right end of dash)
Rse fuse 19 5a
Tan
W/ rear seat entertainment package
W/ s-band digital audio system/vehicle communication system
X202
X204
X212
X301

Navigation Wiring Diagram, with UYS without Y91 & UQA (4 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with UYS without Y91 & UQA (4 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(w/ performance enhanced audio) left front tweeter speaker
3a1
3a2
Aud low ref
B10
Crew cab
Crew cab/ extended cab
Dvd comm
Extended cab
Gnd
I/p fuse block (left side of dash)
Infrared transmitter
L aud sig
L dvd+
Left front speaker
Left rear speaker
Mounted & dual front door mounted 4 speaker system
Nca
Nca b+
Nca dvd+
Nca dvd-
Nca gnd
Nca video cntrl
Nca video sig
Pnk
R aud sig
R dvd+
Regular cab
Right front speaker
Right front tweeter speaker
Right i/p junction block (in right end of dash)
Right rear speaker
Shield)
Signal+
Signal-
Tan
Video display
Volt
W/ dual extended range quarter
W/ performance enhanced audio
X204
X206
X212
X306
X700
X800

Navigation Wiring Diagram, with UYS without Y91 & UQA (5 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with UYS without Y91 & UQA (5 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

12 volt
Anti-lock brakes system
Audio/video adapter
Aux vid h
Aux video h
Body control module (bcm) (lower left side of dash)
Camera sig (+)
Camera sig (-)
Computer data lines system
Cruise control system
Data bus (+)
Data bus (-)
Drain wire
Dvd aud com
Dvd aud sh
Dvd+
Dvd-
Inflatable restraint steering wheel module coil (if equipped) (behind steering wheel)
Infrared+
Infrared-
J216 (in steering column harness)
J217 (in steering wheel harness, 9 cm from inflatable restraint steering wheel module coil x2)
L aux aud
L aux audio
L dvd+
Navigation system
Nca
Next
Pnk
R aux aud
R aux audio
R dvd+
Radio
Right steering wheel control switch
Seek
Source
Sw sig
Tan
Transmissions system
Video cntrl
Video sig
Video sig/ drain wire
Voice rec
Voice sig/ low ref
Volume down
Volume up
Vss
W/ automatic cruise control
W/ automatic cruise control accessory steering wheel control
W/o automatic cruise control
X203
X301

Navigation Wiring Diagram, with UYS, Y91 & UQA (1 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with UYS, Y91 & UQA (1 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(pins: 21-27 not used)
2a1
Amp fuse 41 fuse 38 30a
Antenna
Coax
Computer data lines system
Diesel
Drain wire
G200 (on right front corner of hvac module)
Gasoline
Gmlan
Gnd
Hot at all times
I/p fuse block (left side of dash)
Info fuse 22 10a
Inside rearview mirror (isrvm)
J328
Lf aud+
Lf aud-
Logic
Low ref
Lr aud+
Lr aud-
Nca
Onstar button assembly
Power distribution system
Radio
Rdo fuse 42 fuse 39 15a
Rem sig
Rf aud+
Rf aud-
Right i/p junction block (in right end of dash) x2
Rr aud+
Rr aud-
Rse fuse 19 5a
Tan
Underhood fuse block (left side of engine compt)
Usb cable
Usb receptacle (if equipped)
Voice sig
W/ onstar
W/ rear seat entertainment package
X203
X265

Navigation Wiring Diagram, with UYS, Y91 & UQA (2 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with UYS, Y91 & UQA (2 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of roof)
(pins: 6-16 not used)
Aud sig
Cellular telephone microphone (in overhead console)
Cellular/ navigation & digital radio antenna
Cellular/ navigation antenna
Coax
Computer data lines system
Digital audio system
Drain wire
G nca
G301 (below left side of passenger's seat)
Gmlan
Gmlan+
Gmlan-
Gnd
Green led
Keypad sig
Left i/p junction block (lower left side of dash)
Low ref
Nca
Pnk
Red led
Tan
Vehicle communication interface module (vcim) (behind center of dash)
Voice sig
W/ onstar
W/ s-band & traffic digital audio system
W/o onstar
W/o s-band & traffic
X12
X203
X204
X213
X301
X304

Navigation Wiring Diagram, with UYS, Y91 & UQA (3 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with UYS, Y91 & UQA (3 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(below left side of passenger's seat) g301
(left side of center console) noise compensation microphone
(lower left side of dash) left i/p j/b
(under rear of center console) audio amplifier
Amplf+
Amplf-
Computer data lines system
Drain wire
F centr spk+
F centr spk-
G301 (below left side of passenger's seat)
Gmlan
Gnd
Infrared ref
Infrared v
L infrared
L subwfr+
L subwfr-
Left i/p j/b (lower x12
Left side of dash)
Lf aud+
Lf aud-
Lf spk+
Lf spk-
Lr aud+
Lr aud-
Micro sig
Nca
Pnk
R infrared
R subwfr+
R subwfr-
Rear seat audio (rsa) control
Rf aud+
Rf aud-
Rf spk+
Rf spk-
Rr aud+
Rr aud-
Subwoofer speaker
Tan
X12
X301
X309

Navigation Wiring Diagram, with UYS, Y91 & UQA (4 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with UYS, Y91 & UQA (4 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

3a1
3a2
Aud low ref
B10
B11
B12
C10
C11
C12
Center i/p speaker
Crew cab
Dvd comm
Extended cab
Gnd
I/p fuse block (left side of dash)
Infrared transmitter
L aud sig
L dvd+
Left front speaker
Left front tweeter speaker
Left rear speaker
Nca
Nca b+
Nca dvd+
Nca dvd-
Nca enable sig
Nca gnd
Nca h
Nca video cntrl
Nca video sig
Pnk
R aud sig
R dvd+
Right front speaker
Right front tweeter speaker
Right i/p junction block (in right end of dash)
Right rear speaker
Shield)
Signal+
Signal-
Tan
Video display
Volt
X204
X206
X301
X306
X700
X800

Navigation Wiring Diagram, with UYS, Y91 & UQA (5 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with UYS, Y91 & UQA (5 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

12 volt
Ampl+
Ampl-
Anti-lock brakes system
Audio/video adapter
Aux vid h
Aux video h
Body control module (bcm) (lower left side of dash)
Camera sig (-)
Camera video sig (+)
Computer data lines system
Cruise control system
Data bus (+)
Data bus (-)
Drain wire
Dvd aud com
Dvd aud sh
Dvd+
Dvd-
Inflatable restraint steering wheel module coil (if equipped) (behind steering wheel)
Infrared+
Infrared-
J216 (in steering column harness)
J217 (in steering wheel harness, 9 cm from inflatable restraint steering wheel module coil x2)
L aux aud
L aux audio
L dvd+
Low ref/ drain wire
Navigation system
Nca
Next
Pnk
R aux aud
R aux audio
R dvd+
Radio
Right steering wheel control switch
Seek
Source
Sw sig
Tan
Transmissions system
Video cntrl
Video sig
Voice rec
Voice sig/ low ref
Volume down
Volume up
Vss
W/ automatic cruise control
W/ automatic cruise control accessory steering wheel control
W/o automatic cruise control
X203
X301

Navigation Wiring Diagram, with UYS, Y91 & without UQA (1 of 4) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with UYS, Y91 & without UQA (1 of 4) for GMC Cab & Chassis Sierra HD 2012 3500:

(pins: 21-27 not used)
Antenna
Coax
Computer data lines system
Diesel
G200 (on right front corner of hvac module)
Gasoline
Gmlan
Gnd
Hot at all times
I/p fuse block (left side of dash)
Info fuse 22 10a
Inside rearview mirror (isrvm)
J328
Lf spk+
Lf spk-
Logic
Low ref
Lr aud+
Lr aud-
Onstar button assembly
Power distribution system
Radio
Rdo fuse 42 fuse 39 15a
Rem sig
Rf spk+
Rf spk-
Rr aud+
Tan
Underhood fuse block (left side of engine compt)
Usb cable
Usb receptacle (if equipped)
Voice sig
W/ onstar
X203
X265

Navigation Wiring Diagram, with UYS, Y91 & without UQA (2 of 4) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with UYS, Y91 & without UQA (2 of 4) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of roof)
(pins: 6-16 not used)
Aud sig
Cellular telephone microphone (in overhead console)
Cellular/ navigation & digital radio antenna
Cellular/ navigation antenna
Coax
Computer data lines system
Digital audio system
Drain wire
G301 (below left side of passenger's seat)
Gmlan
Gmlan+
Gmlan-
Gnd
Green led
J307
Keypad sig
Left i/p junction block (lower left side of dash)
Low ref
Nca
Pnk
Red led
Tan
Vehicle communication interface module (vcim) (behind center of dash)
Voice sig
W/ onstar
W/ s-band & traffic
W/o onstar
W/o s-band & traffic
X12
X203
X204
X213
X301
X304

Navigation Wiring Diagram, with UYS, Y91 & without UQA (3 of 4) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with UYS, Y91 & without UQA (3 of 4) for GMC Cab & Chassis Sierra HD 2012 3500:

(w/ performance enhanced audio) left front tweeter speaker
3a1
3a2
A13
A14
B10
Computer data lines system
Crew cab
Crew cab/ extended cab
Drain wire
Extended cab
G301 (below left side of passenger's seat)
Gmlan
Gnd
I/p fuse block (left side of dash)
Infrared ref
Infrared v
J330
L infrared
Left front speaker
Left rear speaker
Mounted & dual front door mounted 4 speaker system
Nca
Pnk
R infrared
Rear seat audio (rsa) control (if equipped)
Regular cab
Right front speaker
Right front tweeter speaker
Right i/p junction block (in right end of dash)
Right rear speaker
Tan
W/ dual extended range quarter
W/ performance enhanced audio
W/ s-band digital audio system / vehicle comunication system
X202
X204
X212
X301
X700
X800

Navigation Wiring Diagram, with UYS, Y91 & without UQA (4 of 4) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with UYS, Y91 & without UQA (4 of 4) for GMC Cab & Chassis Sierra HD 2012 3500:

12 volt
2a1
Anti-lock brakes system
Aud low ref
Audio/video adapter
Aux vid h
Aux video h
Body control module (bcm) (lower left side of dash)
Camera sig (+)
Computer data lines system
Cruise control system
Data bus (+)
Data bus (-)
Drain wire
Dvd aud com
Dvd aud sh
Dvd comm
Dvd+
Dvd-
Gnd
Hot at all times
I/p fuse block (left side of dash)
Inflatable restraint steering wheel module coil (if equipped) (behind steering wheel)
Infrared transmitter
Infrared+
Infrared-
J216 (in steering column harness)
J217 (in steering wheel harness, 9 cm from inflatable restraint steering wheel module coil x2)
L aud sig
L aux aud
L aux audio
L dvd+
Low ref/ drain wire
Navigation system
Nca
Nca b+
Nca dvd+
Nca dvd-
Nca enable sig
Nca gnd
Nca video sig
Next
Pnk
R aud sig
R aux aud
R aux audio
R dvd+
Radio
Right i/p j/b (in right end of dash)
Right steering wheel control switch
Rse fuse 19 5a
Seek
Shield)
Signal+
Signal-
Source
Sw sig
Tan
Transmissions system
Video cntrl
Video display
Video sig
Voice rec
Voice sig/ref
Volt
Volume down
Volume up
Vss
W/ automatic cruise control
W/ automatic cruise control/ accessory steering wheel control
W/ rear seat entertainment package
W/o automatic cruise control
X203
X204
X206
X301
X306

Navigation Wiring Diagram, with Y91 & UQA, without UYS (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with Y91 & UQA, without UYS (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of roof)
(pins: 6-16 not used)
2a1
Amp fuse 41 fuse 38 30a
Antenna
Aud sig
Cellular telephone microphone (in overhead console)
Cellular/ navigation & digital radio antenna
Cellular/ navigation antenna
Cellular/navigation & digital radio antenna (left front of roof)
Coax
Computer data lines system
Diesel
Digital radio receiver (behind right end of dash)
Drain wire
G nca
G301 (below left side of passenger's seat)
Gasoline
Gmlan
Gmlan+
Gmlan-
Gnd
Green led
Hot at all times
I/p fuse block (left side of dash)
Info fuse 22 10a
Interior lights system
J204
Keypad sig
L aud+
L aud-
Led cntrl
Left i/p junction block (lower left side of dash)
Lf aud+
Lf aud-
Low ref
Low ref/ drain wire
Lr aud+
Lr aud-
Nca
Pnk
Power distribution system
R aud+
R aud-
Radio
Rdo fuse 42 fuse 39 15a
Red led
Rem sig
Rf aud+
Rf aud-
Right i/p junction block (in right end of dash) x2
Rr aud+
Rr aud-
Rse fuse 19 5a
Tan
Underhood fuse block (left side of engine compt)
Usb cable
Usb receptacle (if equipped)
Vehicle communication interface module (vcim) (behind center of dash)
Voice sig
Voice sig/ audio sig
W/ onstar
W/ rear seat entertainment package
W/ s-band & traffic digital audio system
W/o onstar
W/o s-band & traffic digital audio system
X12
X203
X204
X213
X265
X301
X304

Navigation Wiring Diagram, with Y91 & UQA, without UYS (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with Y91 & UQA, without UYS (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(below left side of passenger's seat) g301
(left side of center console) noise compensation microphone
(lower left side of dash) left i/p j/b
(under rear of center console) audio amplifier
Computer data lines system
Drain wire
F centr spk+
F centr spk-
G301 (below left side of passenger's seat)
Gmlan
Gnd
Infrared ref
Infrared v
Inside rearview mirror (isrvm)
L infrared
L subwfr+
L subwfr-
Left i/p j/b (lower x12
Left side of dash)
Lf aud+
Lf aud-
Lf spk+
Lf spk-
Lr aud+
Lr aud-
Micro sig
Nca
Pnk
R infrared
R subwfr+
R subwfr-
Rear seat audio (rsa) control
Rf aud+
Rf aud-
Rf spk+
Rf spk-
Rr aud+
Rr aud-
Subwoofer speaker
Tan
X12
X203
X204
X301
X309

Navigation Wiring Diagram, with Y91 & UQA, without UYS (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with Y91 & UQA, without UYS (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

12 volt
3a1
3a2
Aud low ref
Audio/video adapter
Aux vid h
Aux video h
B10
B11
B12
Body control module (bcm) (lower left side of dash)
Center i/p speaker
Computer data lines system
Crew cab
Cruise control system
Data bus (+)
Data bus (-)
Drain wire
Dvd aud com
Dvd aud sh
Dvd comm
Dvd+
Dvd-
Extended cab
Gnd
I/p fuse block (left side of dash)
Inflatable restraint steering wheel module coil (if equipped) (behind steering wheel)
Infrared transmitter
Infrared+
Infrared-
J216 (in steering column harness)
J217 (in steering wheel harness, 9 cm from inflatable restraint steering wheel module coil x2)
L aud sig
L aux aud
L aux audio
L dvd+
Left front speaker
Left front tweeter speaker
Left rear speaker
Nca
Nca b+
Nca dvd+
Nca dvd-
Nca enable sig
Nca gnd
Nca video cntrl
Nca video sig
Next
Pnk
R aud sig
R aux aud
R aux audio
R dvd+
Radio
Right front speaker
Right front tweeter speaker
Right i/p junction block (in right end of dash)
Right rear speaker
Right steering wheel control switch
Seek
Shield)
Signal+
Signal-
Source
Sw sig
Tan
Transmissions system
Video cntrl
Video display
Video sig
Voice rec
Volt
Volume down
Volume up
W/ automatic cruise control
W/ automatic cruise control accessory steering wheel control
W/o automatic cruise control
X204
X206
X301
X306
X700
X800

Navigation Wiring Diagram, with Y91, without UYS & UQA (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with Y91, without UYS & UQA (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of roof) cellular/ navigation antenna cellular/ navigation & digital radio antenna
(pins: 6-16 not used)
Antenna
Aud sig
Cellular telephone microphone (in overhead console)
Cellular/navigation & digital radio antenna (left front of roof)
Coax
Computer data lines system
Diesel
Digital radio receiver (behind right end of dash)
Drain wire
G301 (below left side of passenger's seat)
Gasoline
Gmlan
Gmlan+
Gmlan-
Gnd
Green led
Hot at all times
I/p fuse block (left side of dash)
Info fuse 22 10a
Interior lights system
J204
J307
Keypad sig
L aud+
L aud-
Led cntrl
Left i/p junction block (lower left side of dash)
Lf spk+
Lf spk-
Low ref
Low ref/ drain wire
Lr aud+
Lr aud-
Nca
Pnk
Power distribution system
R aud+
R aud-
Radio
Rdo fuse 42 fuse 39 15a
Red led
Rem sig
Rf spk+
Rf spk-
Rr aud+
Rr aud-
Tan
Traffic digital audio system
Traffic digital audio system w/ s-band &
Underhood fuse block (left side of engine compt)
Usb cable
Usb receptacle (if equipped)
Vehicle communication interface module (vcim) (behind center of dash)
Voice sig
Voice sig/ tele sig
W/ onstar
W/o onstar
W/o s-band &
X12
X203
X204
X213
X265
X301
X304

Navigation Wiring Diagram, with Y91, without UYS & UQA (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with Y91, without UYS & UQA (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

2a1
A13
A14
Computer data lines system
Drain wire
G301 (below left side of passenger's seat)
Gmlan
Gnd
Hot at all times
I/p fuse block (left side of dash)
Infrared ref
Infrared v
Inside rearview mirror (isrvm)
J330
L infrared
Nca
Pnk
R infrared
Rear seat audio (rsa) control (if equipped)
Right i/p j/b (in right end of dash)
Rse fuse 19 5a
Tan
W/ rear seat entertainment package
W/ s-band digital audio system / vehicle comunication system
X202
X203
X204
X212
X301

Navigation Wiring Diagram, with Y91, without UYS & UQA (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, with Y91, without UYS & UQA (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(w/ performance enhanced audio) left front tweeter speaker
12 volt
3a1
3a2
Aud low ref
Audio/video adapter
Aux vid h
Aux video h
B10
Body control module (bcm) (lower left side of dash)
Computer data lines system
Crew cab
Crew cab/ extended cab
Cruise control system
Data bus (+)
Data bus (-)
Drain wire
Dvd aud com
Dvd aud sh
Dvd comm
Dvd+
Dvd-
Extended cab
Gnd
I/p fuse block (left side of dash)
Inflatable restraint steering wheel module coil (if equipped) (behind steering wheel)
Infrared transmitter
Infrared+
Infrared-
J216 (in steering column harness)
J217 (in steering wheel harness, 9 cm from inflatable restraint steering wheel module coil x2)
L aud sig
L aux aud
L aux audio
L dvd+
Left front speaker
Left rear speaker
Mounted & dual front door mounted 4 speaker system
Nca
Nca b+
Nca dvd+
Nca dvd-
Nca enable sig
Nca gnd
Nca video sig
Next
Pnk
R aud sig
R aux aud
R aux audio
R dvd+
Radio
Regular cab
Right front speaker
Right front tweeter speaker
Right i/p junction block (in right end of dash)
Right rear speaker
Right steering wheel control switch
Seek
Shield)
Signal+
Signal-
Source
Sw sig
Tan
Transmissions system
Video cntrl
Video display
Video sig
Voice rec
Volt
Volume down
Volume up
W/ automatic cruise control
W/ automatic cruise control/ accessory steering wheel control
W/ dual extended range quarter
W/ performance enhanced audio
W/o automatic cruise control
X204
X206
X212
X301
X306
X700
X800

Navigation Wiring Diagram, without UYS, Y91 & UQA (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, without UYS, Y91 & UQA (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of roof)
(lower left side of dash) left i/p junction block
(or nca)
(pins: 6-16 not used)
Antenna
Aud sig
Cellular telephone microphone (in overhead console)
Cellular/ navigation & digital radio radio antenna
Cellular/ navigation antenna
Cellular/navigation & digital radio antenna (left front of roof)
Coax
Computer data lines system
Diesel
Digital audio system
Digital radio receiver (behind right end of dash)
Drain wire
G nca
G301 (below left side of passenger's seat)
Gasoline
Gmlan
Gmlan+
Gmlan-
Gnd
Green led
Hot at all times
I/p fuse block (left side of dash)
Info fuse 22 10a
Interior lights system
J307
Keypad sig
L aud+
L aud-
Led cntrl
Lf spk+
Lf spk-
Low ref
Low ref/ drain wire
Lr aud+
Lr aud-
Nca
Pnk
R aud+
R aud-
Radio
Rdo fuse 42 fuse 39 15a
Red led
Rf spk+
Rf spk-
Rr aud+
Rr aud-
Tan
Underhood fuse block (left side of engine compt)
Usb cable
Usb receptacle (if equipped)
Vehicle communication interface module (vcim) (behind center of dash)
Voice sig
Voice sig/ tele sig
W/ on star
W/ onstar
W/ s-band & traffic
W/o onstar
W/o s-band & traffic digital audio system
X12
X122
X203
X204
X212
X213
X265
X304

Navigation Wiring Diagram, without UYS, Y91 & UQA (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Navigation Wiring Diagram, without UYS, Y91 & UQA (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

2a1
A13
A14
Computer data lines system
Drain wire
G301 (below left side of passenger's seat)
Gmlan
Gnd
Hot at all times
I/p fuse block (left side of dash)
Infrared ref
Infrared v
Inside rearview mirror (isrvm)
J330
L infrared
Nca
Pnk
R infrared
Rear seat audio (rsa) control
Right i/p j/b (in right end of dash)
Rse fuse 19 5a
Tan
W/ rear seat entertainment package
W/ s-band digital audio system/vehicle communication system
X202
X203
X204
X212
X301

Navigation Wiring Diagram, without UYS, Y91 & UQA (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, without UYS, Y91 & UQA (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(w/ performance enhanced audio) left front tweeter speaker
12 volt
3a1
3a2
Aud low ref
Audio/video adapter
Aux vid h
Aux video h
B10
Body control module (bcm) (lower left side of dash)
Computer data lines system
Crew cab
Crew cab/ extended cab
Cruise control system
Data bus (+)
Data bus (-)
Drain wire
Dvd aud com
Dvd aud sh
Dvd comm
Dvd+
Dvd-
Extended cab
Gnd
I/p fuse block (left side of dash)
Inflatable restraint steering wheel module coil (if equipped) (behind steering wheel)
Infrared transmitter
Infrared+
Infrared-
J216 (in steering column harness)
J217 (in steering wheel harness, 9 cm from inflatable restraint steering wheel module coil x2)
L aud sig
L aux aud
L aux audio
L dvd+
Left front speaker
Left rear speaker
Mounted & dual front door mounted 4 speaker system
Nca
Nca b+
Nca dvd+
Nca dvd-
Nca enable sig
Nca gnd
Nca video sig
Next
Pnk
R aud sig
R aux aud
R aux audio
R dvd+
Radio
Regular cab
Right front speaker
Right front tweeter speaker
Right i/p junction block (in right end of dash)
Right rear speaker
Right steering wheel control switch
Seek
Shield)
Signal+
Signal-
Source
Sw sig
Tan
Transmissions system
Video cntrl
Video display
Video sig
Voice rec
Volt
Volume down
Volume up
W/ automatic cruise control
W/ automatic cruise control/ accessory steering wheel heater
W/ dual extended range quarter
W/ performance enhanced audio
W/o automatic cruise control
X204
X206
X212
X301
X306
X700
X800

Navigation Wiring Diagram, without UYS, Y91 & with UQA (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Navigation Wiring Diagram, without UYS, Y91 & with UQA (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of roof)
(lower left side of dash) left i/p junction block
Amp fuse 41 fuse 38 30a
Ampl cntrl
Antenna
Aud sig
Cellular telephone microphone (in overhead console)
Cellular/ navigation & digital radio antenna
Cellular/ navigation antenna
Cellular/navigation & digital radio antenna (left front of roof)
Coax
Computer data lines system
Dash)
Diesel
Digital audio system
Digital radio receiver (if equipped) (behind right end of dash)
Drain wire
G nca
G301 (below left side of passenger's seat)
Gasoline
Gmlan
Gmlan+
Gmlan-
Gnd
Green led
Hot at all times
I/p fuse block (left side of
Info fuse 22 10a
Interior lights system
J307
Keypad sig
L aud+
L aud-
Left i/p junction block (lower left x3
Lf aud+
Lf aud-
Low ref
Low ref/ drain wire
Lr aud+
Lr aud-
Nca
Pins: 6-16 not used
Pnk
R aud+
R aud-
Radio
Rdo fuse 42 fuse 39 15a
Red led
Rem sig/ led cntrl
Rf aud+
Rf aud-
Rr aud+
Rr aud-
Side of dash)
Tan
Tele sig
Underhood fuse block (left side of engine compt)
Usb cable
Usb receptacle (if equipped)
Vehicle communication interface module (vcim) (behind center of dash)
Voice sig
Voice sig/
W/ on star
W/ onstar
W/ s-band & traffic digital audio system
W/o onstar
W/o s-band & traffic
X12
X122
X203
X204
X212
X213
X213 coax
X265
X301
X304

Navigation Wiring Diagram, without UYS, Y91 & with UQA (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Navigation Wiring Diagram, without UYS, Y91 & with UQA (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(below left side of passenger's seat) g301
(under rear of center console) audio amplifier
2a1
A13
A14
Ampl cntrl
Computer data lines system
Drain wire
G301 (below left side of passenger's seat)
Gmlan
Gnd
Hot at all times
I/p fuse block (left side of dash)
Infrared ref
Infrared v
Inside rearview mirror (isrvm)
J330
L infrared
L subwfr+
L subwfr-
Left i/p j/b (lower left side of dash)
Lf aud+
Lf aud-
Lf spk+
Lf spk-
Lr aud+
Lr aud-
Nca
Nca h
Package
Pnk
R infrared
R subwfr+
R subwfr-
Rear seat audio (rsa) control
Rem enable
Rf aud+
Rf aud-
Rf spk+
Rf spk-
Right i/p j/b (in right end of dash)
Rr aud
Rr aud+
Rr aud-
Rse fuse 19 5a
Subwoofer speaker
Tan
W/ rear seat entertainment
X12
X202
X203
X204
X212
X301

Navigation Wiring Diagram, without UYS, Y91 & with UQA (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Navigation Wiring Diagram, without UYS, Y91 & with UQA (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(in steering wheel harness, 9 cm from inflatable restraint steering wheel module coil x2)
12 volt
3a1
3a2
Accessory steering wheel control
Aud low ref
Audio/video adapter
Aux vid h
Aux video h
B10
B11
B12
Body control module (bcm) (lower left side of dash)
Computer data lines system
Crew cab
Cruise control system
Data bus (+)
Data bus (-)
Drain wire
Dvd aud com
Dvd aud sh
Dvd comm
Dvd+
Dvd-
Extended cab
Gnd
I/p fuse block (left side of dash)
Inflatable restraint steering wheel module coil (if equipped) (behind steering wheel)
Infrared transmitter
Infrared+
Infrared-
J216 (in steering column harness)
J217
L aud sig
L aux aud
L aux audio
L dvd+
Left front speaker
Left front tweeter speaker
Left rear speaker
Nca
Nca b+
Nca dvd+
Nca dvd-
Nca gnd
Nca video cntrl
Nca video sig
Next
Pnk
R aud sig
R aux aud
R aux audio
R dvd+
Radio
Right front speaker
Right front tweeter speaker
Right i/p junction block (in right end of dash)
Right rear speaker
Right steering wheel control switch
Seek
Shield)
Signal+
Signal-
Source
Sw sig
Tan
Transmissions system
Video cntrl
Video display
Video sig
Voice rec
Volt
Volume down
Volume up
W/ automatic cruise control
W/ automatic cruise control/
W/o automatic cruise control
X204
X206
X212
X301
X306
X700
X800

Parking Assistant Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Parking Assistant Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(below right side of passenger's seat) g302
(license lamp harness, 20 cm from right rear object sensors)
(license lamp harness, 28 cm from left rear object sensors) j403
(upper left corner of dash) g201
A14
B10
B11
B12
B13
B14
B15
B5 x2
Body control module (bcm) (lower left side of dash)
Computer data lines system
Disable sig
Gmlan
Gnd
Hot at all times
I/p fuse block (left side of dash)
I/p multi-function switch
Ind dim
Interior lights system
J201
J302
J351 (heated seat body harness, 5 cm into heated seat switches breakout)
J404
Led disable
Left i/p junction block (lower left side of dash)
Left rear middle object sensor (left side of rear bumper)
Left rear object corner sensor (left corner of rear bumper)
Low ref
Lr sns sig
Obs det fuse 20 10a
Rear object sensor control module (at rear cargo area, behind trim panel)
Rear park assist disable switch
Right rear corner object sensor (right corner of rear bumper)
Right rear middle object sensor (right side of rear bumper)
Rr sns sig
W/ spo heated seats
W/o spo heated seats
X115
X202
X333
X408

Rear View Camera Wiring Diagram, with SPO Accessory for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Rear View Camera Wiring Diagram, with SPO Accessory for GMC Cab & Chassis Sierra HD 2012 3500:

(lower left side of dash) left i/p junction block
Body control module (bcm) (lower left side of dash)
Camera sig +
Camera sig -
Camera video signal (+)
Camera video signal (-)
Computer data lines system
G202
Hot w/ run/ crnk relay energized
Inside rearview mirror (isrvm)
Lamp rly ctrl
Logic
Low speed serial data x3
Mirror display
Misc ign fuse 43 (gasoline) fuse 40 (diesel) 10a
Nca
Nca ignition voltage nca ground nca camera vid sig (-) nca bkup lp rly ctrl nca drain wire nca camera vid sig (+)
Pnk
Pnk a
Power distribution system
Radio
Rearview camera (left of tailgate handle)
Underhood fuse block (left side of engine compt)
W/ front seat cooling heater
W/ uys
W/o uys
X12
X209
X210

Rear View Camera Wiring Diagram, without SPO Accessory for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Rear View Camera Wiring Diagram, without SPO Accessory for GMC Cab & Chassis Sierra HD 2012 3500:

(instrument panel harness, 6.5 cm from x205 breakout) (hybrid w/ engine control power take off (pto) controls) j280
Backup lp rly ctrl
Body control module (bcm) (lower left side of dash)
Camera gnd
Camera sig (+)
Camera sig (-)
Camera sig +
Camera sig -
Camera vid sig (+)
Camera vid sig (-)
Computer data lines system
Drain wire
G201 (upper left corner of dash)
Ground
Hot w/ run/ crnk relay energized
Ign
Image display mirror
Inside rearview mirror (isrvm)
J150 (chassis harness, 7 cm into x115 breakout)
J281 (instrument panel harness, 10 cm into x115 breakout)
J435 (chassis harness, 17 cm into rearview camera image display module breakout)
Lamp rly ctrl
Left i/p junction block (lower left side of dash)
Logic
Low speed serial data x3
Misc ign fuse 43 (gasoline) fuse 40 (diesel) 10a
Nca
Nca c
Pnk
Pnk camera sig (+)
Pnk ign
Power distribution system
Radio
Rearview camera
Rearview camera assembly
Red
Tan
Underhood fuse block (left side of engine compt)
W/ y91
W/ y91 & uys
W/ y91, drc & dd8
W/o y91
W/o y91 & uys
W/o y91, drc & dd8
X11
X115
X123
X124
X208
X240
X241

POWER DISTRIBUTION

6.0L VIN G

6.0L VIN G, Power Distribution Wiring Diagram (1 of 7) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, Power Distribution Wiring Diagram (1 of 7) for GMC Cab & Chassis Sierra HD 2012 3500:

(in fuse block jumper harness) j210
(in fuse block jumper harness) j211
(in fuse block jumper harness) j224
(in roof console) emergency vehicle roof lamp relay
(not used)
(on lower left front of engine) (except 4.3l) g102
125a
175a
2b5
4 speed a/t
6 speed a/t
6.0l (vin g)
6.0l (vin j)
60a
Automatic a/c
Automatic transmission
Auxiliary battery relay (if equipped) (rear of engine compt)
Auxiliary battery run relay
Body builder emergency lamp
Body control module (bcm)
Dash)
Data link connector (dlc)
Ecm- batt fuse 12 10a
Engine control module (ecm)
Evaporative emission (evap) canister vent solenoid valve
Except 6.0l (vin j)
Fuse a 30a
Fuse b 30a
Fuse c 30a
Fuse d 30a
G103 (on front of right cylinder head)
G107 (4.3l) (top left rear of engine)
G200 (on right front corner of hvac module)
Generator
Hdlp wash fuse 22 20a
Heated seat control module (if equipped)
Hvac batt fuse 39 10a
Hvac control module
I/p 1 accessory power outlet
Instrument panel cluster (ipc)
Ipc fuse 46 10a
Itbc fuse 6 15a
J145
J200
J209 (in fuse block jumper harness)
J219
Left battery
Left i/p j/b (lower left x2 side of dash)
Ltr fuse 53 20a
Manual a/c
Red
Relay a
Relay b
Right battery
Right i/p j/b (in right end of x2
Seo b2 fuse 37 30a
Starter motor
Stud 2 fuse 63 30a
Tcm-batt fuse 14 15a
To auxiliary fuse block (diagram 7 of 7)
To left i/p j/b (diagram 4 of 7)
To roof beacon switch (diagram 2 of 7)
To stud 1 fuse 68 (diagram 2 of 7)
To underhood fuse block (diagram 2 of 7)
To underhood fuse block (diagram 3 of 7)
To underhood fuse block (diagram 6 of 7)
Trailer brake control module (if equipped)
Trailer brake control relay (if equipped)
Transfer case encoder motor
Transfer case shift control module
Transmission control module (tcm)
Trec fuse 67 30a
Underhood fuse block (left side of engine compt)
Underhood fuse holder (on positive battery terminal)
W/ active 2 speed
W/ auxiliary battery
W/ electronic 2 speed & active 2 speed
W/ emergency vehicle roof lamp relay
W/ wrecker emergency lamp provisions
W/ wrecker relay
Wrecker relay
Wsw/htr fuse 66 60a
X109
X116
X122
X14
X205
X214
X224
X228
X313
X331

6.0L VIN G, Power Distribution Wiring Diagram (2 of 7) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, Power Distribution Wiring Diagram (2 of 7) for GMC Cab & Chassis Sierra HD 2012 3500:

& vacuum/hydraulic brakes
(in camper harness) j414
(in sliding rear window jumper harness) j336
(left side of dash) i/p fuse block
(not used)
(w/ individual front seat) j315
2b1
3b4
6.0l (vin j)
Abs-1 fuse 61 40a
Abs-2 fuse 9 25a
Bcm fuse 10a
Blower motor control module
Body control modue (bcm)
Comfort & decor level 3 convenience package
Comfort & decor level 3 convenience package & luxury
Cooled seats fuse 24 30a
Crew cab
Ctsy fuse 15a
Ddm fuse 4 15a
Dim fuse 10a
Driver door lock/ window switch
Driver seat 2 circuit breaker cb3 25a
Driver seat adjuster switch
Driver window switch
Dsm fuse 10a
Elec run board fuse 65 30a
Electronic brake control module (ebcm)
Except 4.3l/6.0l (vin g)
Except comfort & decor level 3 convenience package & luxury
Extended cab & power window
From fusible link 3 (diagram 1 of 7)
From ipc f fuse 46 (diagram 1 of 7)
From right i/p j/b (diagram 1 of 7)
Fscm fuse 21 20a
Fuel pump flow control module
Fuel pump/ trailer brake control module
G200 (on right front corner of hvac module)
Heavy duty abs fuse 59 60a
Hvac blwr fuse 70 40a
J313
J323
Lbec 1 fuse 64 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x1
Left rear window switch
Lt dr circuit breaker 25a
Mbec 1 fuse 69 60a
Memory seat module (msm)
Obs det fuse 20 10a
Of dash)
Outside rearview mirror switch
Pass seat 1 circuit breaker cb2 25a
Passenger door lock/ window switch
Passenger seat adjuster switch
Passenger seat lumbar switch
Passenger window switch
Pwr mir fuse 2a
Pwr rear wndw circuit breaker cb4 25a
Rear hvac fuse 30a
Rear object sensor control module (w/ rear parking assist)
Rear seat fuse 20a
Rear wpr fuse 25a
Red
Remote control door lock receiver (rcdlr)
Right i/p j/b (in right end of dash) x6
Right i/p j/b (in right end of x3 dash)
Right rear window switch
Roof beacon relay (in overhead console)
Roof beacon switch
Rt doors circuit breaker cb1 25a
Rt stop trn fuse 8 15a
S/roof fuse 34 30a
Sliding rear window close relay
Sliding rear window open relay
Stud 1 fuse 68 (w/ auxiliary battery) 40a
Sunroof module
To lgm fuse 71 (diagram 3 of 7)
To pdm fuse (diagram 3 of 7)
To pdm fuse 9 (diagram 3 of 7)
To splice j318 (diagram 4 of 7)
Trailer connector
Underhood fuse block (left side of engine compt)
W/ active & vacuum brake & 10 series
W/ active brake
W/ active brake & 10 series
W/ active brake & w/o 10 series
W/ camper trailer provision
W/ driver power seat adjuster
W/ hydraulic brakes 6.0l (vin j)
W/ individual front seat
W/ individual front seat & power mirror
W/ integrated trailer brake control
W/ passenger power seat adjuster
W/ power window
W/ rear power window
W/ roof beacon relay
W/ roof mounted light provi- lions
W/ sunroof
W/ wrecker & emergency vehicle roof lamp relay
W/o camper trailer provision
W/o individual front seat
W/o individual front seat & power mirror
W/o integrated trailer brake control
X10
X11
X12
X129
X303
X304
X305
X313
X320
X414
X700
X800

6.0L VIN G, Power Distribution Wiring Diagram (3 of 7) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, Power Distribution Wiring Diagram (3 of 7) for GMC Cab & Chassis Sierra HD 2012 3500:

(in pto jumper harness) (w/ power take off) j127
(left side of dash) i/p fuse block
(not used)
(on right front corner of hvac module) g200
2a1
3b2
Air bag batt fuse 45 15a
Alc/comp fuse 58 40a
Amp fuse 41 30a
Audio amplifier (premium performance enhanced audio speaker system)
Audio speaker system
Automatic a/c
Automatic transmission auxiliary fluid pump control module
Aux pwr 2 fuse 2 20a
Aux pwr fuse 20a
Body control module (bcm)
Center console accessory power outlet
Center seat accessory power outlet (w/ full feature center seat)
Chime module
Crew cab w/ individual front seat
Crew cab/ extended cab w/ performance exhanced audio & front compartment console
Dash)
Digital radio receiver (if equipped)
Esc/alc exh fuse 2 30a
From auxiliary battery run relay (diagram 1 of 7)
From fscm fuse 21 (diagram 2 of 7)
From left i/p j/b (diagram 2 of 7)
From lt dr circuit breaker (diagram 2 of 7)
G304 (on lower right "b" pillar)
Garage door opener (gdo)
Hvac control module
I/p 2 accessory power outlet
Inflatable restraint passenger presence system (pps) module (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Info fuse 22 10a
Is lps fuse 10a
J203
J304
Lbec 2 fuse 72 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x10
Lgm fuse 71 30a
Lock pcb relay
Lock/unlock pcb relay
Lt stop trn fuse 6 15a
Manual a/c
Nca
Of dash)
Passenger door lock/ window switch
Pdm fuse 9 (w/ comfort & decor level 3 convenience package) 15a
Performance enhanced
Power locks w/o individual front seat & power mirror
Power take off (pto) relay
Premium performance enhanced
Pto fuse 47 15a
Radio
Rdo fuse 42 15a
Rear seat audio (rsa) control (if equipped)
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x3
Rse fuse 19 5a
Stop lamps fuse 15a
To body control module (diagram 4 of 7)
To dlis fuse 35 (diagram 4 of 7)
Underhood fuse block (left side of engine compt)
Unlock pcb relay
Vehicle communication interface module (vcim)
Video display
W/ aux- iliary battery
W/ custom front compartment floor console
W/ front bench seat
W/ individual front seat
W/ individual front seat & power mirror
W/ luxury
W/ rear seat entertain- ment package
W/ universal garage door opener
W/ wrecker emergency lamp, roof lamp & body builder emergency lamp
W/o aux- iliary battery
W/o individual front seat
W/o luxury
W/o luxury & radio
W/o radio
W/onstar
Windshield washer solvent heater (if equipped)
X11
X123
X124
X150
X212
X301
X304
X305
X306
X319

6.0L VIN G, Power Distribution Wiring Diagram (4 of 7) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, Power Distribution Wiring Diagram (4 of 7) for GMC Cab & Chassis Sierra HD 2012 3500:

(in instrument panel harness) j231
(in passenger seat harness, 15 cm from seat adjuster motor breakout) j318
(in steering column harness) j216
(not used)
12v
2b3
4 speed a/t w/ accessory steering wheel & automatic electronic cruise control
6 speed a/t
Acc
Acc volt
Automatic transmission manual shift switch
Automatic transmission shift lever
Body control module (bcm)
Column harness) j213
Comfort & decor level 3 convenience package w/o individual front seat & power mirror
Dash)
Dlis fuse 35 2a
Driver seat back ventilation heating & cooling module
Driver seat cushion ventilation heating & cooling module
Driver window switch
Except comfort & decor level 3 convenience package w/ individual front seat & power mirror
From cooled seats fuse 24 (diagram 2 of 7)
From lbec 2 fuse 72 (diagram 3 of 7)
From mobile radio fuse block (diagram 1 of 7)
From underhood fuse block (diagram 3 of 7)
Ign
Ignition switch
Inflatable restraint steering wheel module coil
J212 (in steering column harness)
Key in ignition switch
Left i/p j/b (lower left side of dash)
Left steering wheel control switch
Nca
Off
Passenger seat back ventilation heating & cooling module
Passenger seat cushion ventilation heating & cooling module
Passenger window switch
Pnk
Rear sliding window switch (if equipped)
Right i/p j/b (in right end of x2
Right steering wheel control switch
Run
Start
Sunroof control module (if equipped)
Theft deterrent module (tdm)
To run/crnk relay (diagram 5 of 7)
To underhood fuse block (diagram 5 of 7)
Transfer case shift control switch
Underhood fuse block (left side of engine compt)
W/ accessory steering wheel & automatic electronic cruise control
W/ accessory steering wheel control
W/ power window
W/ seat heater
W/o accessory steering wheel & automatic electronic cruise control
W/o accessory steering wheel control
X14
X201
X202
X219
X303
X304
X305
X313
X500
X600

6.0L VIN G, Power Distribution Wiring Diagram (5 of 7) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, Power Distribution Wiring Diagram (5 of 7) for GMC Cab & Chassis Sierra HD 2012 3500:

(in chassis harness) (6.0l (vin j)) j301
(in engine harness) j130
(in fuse block jumper harness) j220
(lower left side of dash) left i/p j/b
(not used)
4 speed a/t
6 speed a/t
6.0l (vin j)
7.5a
A/c cmprsr relay
Air bag ign fuse 40 10a
Automatic transmission (4 speed a/t)
Automatic transmission (6 speed a/t & 2 mode hybrid)
Aux hvac- ign fuse 48 10a
Bck/up lamp pcb relay
Chmsl pcb relay
Climate control seat module
Digital video disc (dvd) control module (if equipped)
Drive motor generator power inverter module (6.0l (vin j))
Drl pcb relay
Ecm-ign fuse 56 15a
Electric shift & active 2 speed
Electronic brake control module (ebcm) (if equipped)
Electronic compass module (comfort & decor level 3 convenience package)
Engine control module (ecm)
Except 4.3l & 6.0l (vin g)
Fog lamp relay
From body control module (diagram 4 of 7)
From dlis fuse 35 (diagram 4 of 7)
Front drive axle actuator (w/ active 2 speed push- button control transfer case)
Frt wash pcb relay
Frt wpr fuse 36 25a
Fuel pmp relay
Fuel pump flow control module
G107 (4.3l) g102 (except 4.3l) (4.3l: top left rear of engine) (except 4.3l: on lower left front of engine)
Hdlp lo/hid relay
Heated steering wheel control module
Heated steering wheel control module inline fuse
Hi beam pcb relay
Horn pcb relay
Hvac-ign fuse 55 10a
Inflatable restraint i/p module on/off indicator (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint steering wheel module coil
Inside rearview mirror (isrvm) (if equipped)
Instrument panel cluster (ipc)
J105
L/gate pcb relay
Left air temperature actuator (automatic a/c)
Left i/p j/b (lower left side of dash)
Misc ign fuse 43 10a
Mode actuator
Nca
Park lamp relay
Pnk
Rear defog relay
Rear view camera
Rear wash pcb relay
Recirculation actuator
Red
Right air temperature actuator (automatic a/c) air temperature actuator (manual a/c)
Right i/p j/b (in right end of dash)
Run/ crnk relay
Secondary fuel pump (6.0l (vin g) w/o auxiliary (fscm) fuel tank)
Seo/alc fuse 54 10a
Stop lamp switch
Strtr relay
To fan-1 fuse 57 (diagram 6 of 7)
To j280 (diagram 6 of 7)
Trailer brake control module (if equipped)
Trans ign 1 fuse 19 15a
Transfer case shift control module (if equipped)
Transmission control module (tcm)
Trlr lt stop/turn pcb relay
Trlr rt stop/turn pcb relay
Underhood fuse block (left side of engine compt)
W/ 2 speed electric shift control transfer case
W/ 2 speed manual shift control transfer case & active 2 speed push button control transfer case
W/ active 2 speed push button control transfer case
W/ front seat cooling heater
W/ spo accessory rear view camera
W/ steering wheel heater
W/o 2 speed electric shift control transfer case
W/o 2 speed manual shift control transfer case & active 2 speed push button control transfer case
W/o active 2 speed push button control transfer case
W/o front seat cooling heater
W/o spo accessory rear view camera
W/o steering wheel heater
Wiper control pcb relay
Wiper speed pcb relay
X102
X11
X110
X12
X14
X175
X201
X205
X209
X210
X276
X304
X305

6.0L VIN G, Power Distribution Wiring Diagram (6 of 7) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, Power Distribution Wiring Diagram (6 of 7) for GMC Cab & Chassis Sierra HD 2012 3500:

(except 6.0l (vin j))
(except 6.0l (vin j)) fan hi relay
(except 6.0l (vin j)) fan lo relay
(in ignition coil jumper harness, between ignition coils 5 & 7) j107
(in spo theft harness) j227
(instrument panel harness, 6.5 cm from x205 breakout)
(not used)
4.3l
6.0l (vin g)
6.0l (vin j)
Central sequential fuel injection (central sfi)
Comfort & decor level 3 convenience package & w/ luxury
Eap fuse 38 15a
Ecm/throt cont fuse 5 15a
Electronic adjustable pedals pcb relay
Eng fuse 4 15a
Engine control module (ecm)
Evaporative emission (evap) canister purge solenoid valve
Except 4.3l
Except 4.3l & 6.0l
Except hybrid
Fan cntrl relay
Fan-1 fuse 57 40a
Fan-2 fuse 60 40a
From auxiliary battery run relay (diagram 1 of 7)
From frt wpr p fuse 36 (diagram 5 of 7)
From left i/p j/b (diagram 5 of 7)
Fuel injector
H pnk
Heated oxygen sensor (ho2s) bank 1 sensor 1
Heated oxygen sensor (ho2s) bank 1 sensor 2 (except 4.3l)
Heated oxygen sensor (ho2s) bank 2 sensor 1
Heated oxygen sensor (ho2s) bank 2 sensor 2 (except 4.3l)
Hybrid
Ignition coil 1
Ignition coil 3
Ignition coil 5
Ignition coil 7
Ignition control module (icm)
Inj-a fuse 24 20a
J128
J280
Mass air flow (maf)/ intake air temperature (iat) sensor
Nca
O2-a snsr fuse 18 10a
O2-b snsr fuse 8 10a
Park enable pcb relay
Pnk
Pnk (in engine harness)
Power take off (pto) module (if equipped)
Pwr/ trn relay
Rearview camera image display module
Red
Security indicator lamp
Seo b1 fuse 52 15a
Serial data gateway (sdg) module (hybrid)
To auxiliary fuse block (diagram 7 of 7)
To inj-b fuse 13 (diagram 7 of 7)
Underhood fuse block (left side of engine compt)
Valve lifter oil manifold (vlom) assembly (5.3l & 6.0 l)
Vehicle inclination sensor
Vehicle shock sensor
W/ 10 series
W/ auxiliary battery
W/ engine control power take off (pto) controls
W/ rear view camera
W/ spo alarm
W/o engine control power take off (pto) controls
W/o rear view camera
X111
X115
X123
X124
X131
X14
X2 left i/p j/b (lower left side of dash)
X227

6.0L VIN G, Power Distribution Wiring Diagram (7 of 7) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, Power Distribution Wiring Diagram (7 of 7) for GMC Cab & Chassis Sierra HD 2012 3500:

(left side of engine compt) (6.0l (vin j)) auxiliary fuse block
(not used)
6.0l (vin j)
A/c compressor
Accessory dc power control module
Accm fuse 3 15a
Acpo fuse 1 25a
Automatic transmission auxiliary fluid pump control module
Becm fan fuse 2 15a
Becm fuse 10 15a
Cab htr pump relay
Cool pump relay
Drive motor generator battery
Drive motor generator battery control module
Drive motor generator power inverter module
Electronic power steering motor control module
Eps fuse 7 15a
Fan 1 fuse 40a
Fan 2 fuse 40a
Fan cntrl relay
Fan hi relay
Fan lo relay
Fan mid 1 relay
Fan mid 2 relay
From eng fuse 4 (diagram 6 of 7)
From right battery (diagram 1 of 7)
From underhood fuse block (diagram 6 of 7)
Fuel injector
Generator battery vent fan relay
Ignition coil 2
Ignition coil 4
Ignition coil 6
Ignition coil 8
Inj-b fuse 13 (except 4.3l) 20a
J395
Mega fuse 200a
Nca
Pim 1 fuse 8 15a
Pim 2 fuse 9 15a
Pnk
Pnk (in ignition coil jumper harness, between ignition coils 4 & 2) j110
Red
Serial data gateway (sdg) module
Trans pump fuse 60a
Underhood fuse block (left side of engine compt)
X113
X150
X215
X350

6.6L VIN 8

6.6L VIN 8, Power Distribution Wiring Diagram (1 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, Power Distribution Wiring Diagram (1 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(in fuse block jumper harness) j210
(in fuse block jumper harness) j211
(in fuse block jumper harness) j224
(in roof console) emergency vehicle roof lamp relay
(not used)
125a
175a
2b5
Automatic a/c
Auxiliary generator
Body builder emergency lamp
Body control module (bcm)
Data link connector (dlc)
Ecm- batt fuse 11 10a
Engine control module (ecm)
Fuse a 30a
Fuse b 30a
Fuse c 30a
Fuse d 30a
G103 (on front of right cylinder head)
G200 (on right front corner of hvac module)
Generator
Glow plug control module (gpcm)
Hdlp wash fuse 20 20a
Heated seat control module (if equipped)
Hvac batt fuse 36 10a
Hvac control module
I/p 1 accessory power outlet
Instrument panel cluster (ipc)
Intake air heater (iah)
Ipc fuse 43 10a
Itbc fuse 19 15a
J200
J219
Left battery
Left i/p j/b (lower left side of dash)
Ltr fuse 50 20a
Manual a/c
Red
Relay a
Relay b
Right battery
Right i/p j/b (in right end of x2 dash)
Seo b2 fuse 34 30a
Starter motor
Stud 2 fuse 58 30a
Tcm-batt fuse 7 15a
To left i/p j/b (diagram 4 of 5)
To roof beacon switch (diagram 2 of 5)
To stud 1 fuse 63 (diagram 2 of 5)
Trailer brake control module (if equipped)
Trailer brake control relay (if equipped)
Transfer case encoder motor
Transfer case shift control module
Transmission control module (tcm)
Trec fuse 62 30a
Underhood fuse block (left side of engine compt)
Underhood fuse holder (right side of firewall)
W/ active 2 speed
W/ dual generator & ambulance upfitter sales package
W/ electronic 2 speed & active 2 speed
W/ emergency vehicle roof lamp relay
W/ wrecker emergency lamp provisions
W/ wrecker relay
Wrecker relay
Wsw/htr fuse 61 60a
X109
X116
X14
X205
X214
X224
X228
X313
X331

6.6L VIN 8, Power Distribution Wiring Diagram (2 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, Power Distribution Wiring Diagram (2 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

& vacuum/hydraulic brakes
(in camper harness) j414
(in sliding rear window jumper harness) j336
(left side of dash) i/p fuse block
(not used)
(w/ individual front seat) j315
2b1
3b4
Abs-1 fuse 56 40a
Abs-2 fuse 8 25a
Bcm fuse 10a
Blower motor control module
Body control module (bcm)
Comfort & decor level 3 convenience package
Cooled seats fuse 24 30a
Crew cab
Ctsy fuse 5 15a
Dash)
Ddm fuse 15a
Dim fuse 10a
Driver door lock/ window switch
Driver seat 2 circuit breaker cb3 25a
Driver seat adjuster switch
Driver window switch
Dsm fuse 10a
Elec run board fuse 60 30a
Electronic brake control module (ebcm)
Except comfort & decor level 3 convenience package
Extended cab & power window
From ipc c fuse 43 (diagram 1 of 5)
From right i/p j/b (diagram 1 of 5)
Front seat
G200 (on right front corner of hvac module)
Heavy duty abs fuse 55 60a
Hvac blwr fuse 65 40a
J323
Lbec 1 fuse 59 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x1
Left rear window switch
Lt dr circuit breaker 25a
Mbec 1 fuse 64 60a
Memory seat module (msm)
Obs det fuse 20 10a
Of dash)
Outside rearview mirror switch
Pass seat 1 circuit breaker cb2 25a
Passenger door lock/ window switch
Passenger seat adjuster switch
Passenger seat lumbar switch
Passenger window switch
Pwr mir fuse 2a
Pwr rear wndw circuit breaker cb4 25a
Rear hvac fuse 30a
Rear object sensor control module (w/ rear parking assist)
Rear seat fuse 20a
Rear wpr fuse 25a
Red
Remote control door lock receiver (rcdlr)
Right i/p j/b (in right end of dash) x6
Right i/p j/b (in right end of x3
Right rear window switch
Roof beacon relay (in overhead console)
Roof beacon switch
Rt doors circuit breaker cb1 25a
Rt stop trn fuse 8 15a
S/roof fuse 31 30a
Sliding rear window close relay
Sliding rear window open relay
Stud 1 fuse 63 40a
Sunroof module
To lgm fuse 66 (diagram 3 of 5)
To pdm fuse (diagram 3 of 5)
To pdm fuse 9 (diagram 3 of 5)
To splice j318 (diagram 4 of 5)
Trailer connector
Underhood fuse block (left side of engine compt)
W/ active & vacuum power brake control & 10 series
W/ active brake
W/ active brake & 10 series
W/ active brake & w/o 10 series & vacuum/hydraulic brakes
W/ camper trailer provision
W/ comfort & decor level 3 convenience package
W/ driver power seat adjuster
W/ hydraulic brakes
W/ individual
W/ individual front seat
W/ individual front seat & power mirror
W/ passenger power seat adjuster
W/ power window
W/ rear power window
W/ roof beacon relay
W/ roof mounted provi- sions
W/ sunroof
W/ wrecker & emergency vehicle roof lamp relay
W/o 10 series
W/o camper trailer provision
W/o individual
W/o individual front seat
W/o individual front seat & power mirror
X10
X11
X12
X303
X304
X305
X313
X320
X414
X700
X800

6.6L VIN 8, Power Distribution Wiring Diagram (3 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, Power Distribution Wiring Diagram (3 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(in pto jumper harness) (w/ power take off) j127
(left side of dash) i/p fuse block
(not used)
(on right front corner of hvac module) g200
2a1
3b2
Air bag batt fuse 42 15a
Alc/comp fuse 54 40a
Amp fuse 38 30a
Audio amplifier (premium performance enhanced audio speaker system)
Audio speaker system
Automatic a/c
Aux pwr 2 fuse 2 20a
Aux pwr fuse 16 20a
Body control module (bcm)
Center console accessory power outlet
Center seat accessory power outlet (w/ full feature center console)
Chime module
Crew cab w/ individual front seat
Crew cab/ extended cab w/ performance exhanced audio & front compartment console
Dash)
Digital radio receiver (if equipped)
Enhanced audio speaker system
Esc/alc exh fuse 1 30a
From abs-2 fuse 8 (diagram 2 of 5)
From left i/p j/b (diagram 2 of 5)
From lt dr circuit breaker (diagram 2 of 5)
Front seat
G304 (on lower right "b" pillar)
Garage door opener (gdo)
Hvac control module
I/p 2 accessory power outlet
Inflatable restraint passenger presence system (pps) module (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Info fuse 22 10a
Is lps fuse 10a
J203
J304
Lbec 2 fuse 67 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x10
Lgm fuse 66 30a
Lock pcb relay
Lock/unlock pcb relay
Lt stop trn fuse 6 15a
Manual a/c
Nca
Of dash)
Passenger door lock/ window switch
Pdm fuse 9 (w/ comfort & decor level 3 convenience package) 15a
Performance enhanced
Power locks w/o individual front seat & power mirror
Power take off (pto) relay
Premium performance
Pto fuse 44 15a
Radio
Rdo fuse 39 15a
Rear seat audio (rsa) control (if equipped)
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x3
Rse fuse 19 5a
Stop lamps fuse 15a
To body control module (diagram 4 of 5)
To dlis fuse 32 (diagram 4 of 5)
Underhood fuse block (left side of engine compt)
Unlock pcb relay
Vehicle communication interface module (vcim)
Video display
W/ custom front compartment floor console
W/ front bench seat
W/ individual
W/ individual front seat & power mirror
W/ luxury
W/ onstar
W/ rear seat entertain- ment package
W/ universal garage door opener
W/ wrecker, emergency vehicle roof lamp & body builder emergency lamp
W/o individual
W/o luxury
W/o luxury & radio
W/o radio
Windshield washer solvent heater (if equipped)
X11
X123
X124
X212
X301
X304
X305
X306
X319

6.6L VIN 8, Power Distribution Wiring Diagram (4 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, Power Distribution Wiring Diagram (4 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(in instrument panel harness) j231
(in passenger seat harness, 15 cm from seat adjuster motor breakout) j318
(in steering column harness) j216
(not used)
12v
2b3
4 speed a/t w/ accessory steering wheel & automatic electronic cruise control
6 speed a/t
Acc
Acc volt
Automatic transmission manual shift switch
Automatic transmission shift lever
Body control module (bcm)
Column harness) j213
Comfort & decor level 3 convenience package w/o individual front seat & power mirror
Dlis fuse 32 2a
Driver seat back ventilation heating & cooling module
Driver seat cushion ventilation heating & cooling module
Driver window switch
Except comfort & decor level 3 convenience package w/ individual front seat & power mirror
From cooled seats fuse 24 (diagram 2 of 5)
From lbec 2 fuse 67 (diagram 3 of 5)
From mobile radio fuse block (diagram 1 of 5)
From pin a4 (left i/p j/b) (diagram 5 of 5)
From underhood fuse block (diagram 3 of 5)
Ign
Ignition switch
Inflatable restraint steering wheel module coil
J212 (in steering column harness)
J280 (instrument panel harness, 6.5 cm from x205 breakout)
Key in ignition switch
Left i/p j/b (lower left side of dash)
Left steering wheel control switch
Nca
Off
Passenger seat back ventilation heating & cooling module
Passenger seat cushion ventilation heating & cooling module
Passenger window switch
Pnk
Rear sliding window switch (if equipped)
Rearview camera image display module
Red
Right i/p j/b (in right end of x2 dash)
Right steering wheel control switch
Run
Start
Sunroof control module (if equipped)
Theft deterrent module (tdm)
To run/crnk relay (diagram 5 of 5)
To underhood fuse block (diagram 5 of 5)
Transfer case shift control switch
Underhood fuse block (left side of engine compt)
W/ accessory steering wheel & automatic electronic cruise control
W/ accessory steering wheel control
W/ engine control power take off (pto) controls
W/ power window
W/ rear view camera
W/ seat heater
W/o accessory steering wheel & automatic electronic cruise control
W/o accessory steering wheel control
W/o engine control power take off (pto) controls
W/o rear view camera
X115
X123
X124
X14
X201
X202
X219
X303
X304
X305
X313
X500
X600

6.6L VIN 8, Power Distribution Wiring Diagram (5 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, Power Distribution Wiring Diagram (5 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(in engine harness) j130
(in fuse block jumper harness) j220
(in spo theft harness) j227
(left side of engine compt) underhood fuse block
(lower left side of dash) left i/p j/b
(not used)
7.5a
A/c cmprsr relay
Air bag ign fuse 37 10a
Aux hvac- ign fuse 45 10a
Bck/up lamp pcb relay
Chmsl pcb relay
Climate control seat module
Comfort & decor level 3 convenience package & w/ luxury
Digital video disc (dvd) control module (if equipped)
Drl pcb relay
Eap fuse 35 15a
Ecm-ign fuse 53 15a
Electric shift & active 2 speed
Electronic adjustable pedals pcb relay
Electronic compass module (comfort & decor level 3 convenience package)
Engine control module (ecm)
Fan fuse 68 10a
Fan relay
Fog lamp relay
From body control module (diagram 4 of 5)
From dlis fuse 32 (diagram 4 of 5)
Front drive axle actuator
Frt wash pcb relay
Frt wpr fuse 33 25a
Fuel pmp relay
G103 (on front of right cylinder head)
Glow plug control module (gpcm)
Hdlp lo/hid relay
Heated steering wheel control module
Heated steering wheel control module inline fuse
Hi beam pcb relay
Horn pcb relay
Hvac-ign fuse 52 10a
Inflatable restraint i/p module on/off indicator (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint steering wheel module coil
Inside rearview mirror (isrvm) (if equipped)
Instrument panel cluster (ipc)
J105
L/gate pcb relay
Left air temperature actuator (automatic a/c)
Left i/p j/b (lower left side of dash) x9
Misc ign fuse 40 10a
Mode actuator
Nca
Park enable pcb relay
Pnk
Pnk c
Power take off (pto) module (if equipped)
Prk lamp relay
Pwr/trn relay
Rear defog relay
Rear view camera
Rear wash pcb relay
Recirculation actuator (if equipped)
Red
Right air temperature actuator (automatic a/c) air temperature actuator (manual a/c)
Right i/p j/b (in right end of dash)
Run/ crnk relay
Security indicator lamp
Seo b1 fuse 15a
Seo/alc fuse 51 10a
Stop lamp switch
Strtr relay
To j280 (diagram 4 of 5)
Trailer brake control module (if equipped)
Trans ign 1 fuse 15a
Transfer case shift control module
Transmission control module (tcm)
Trlr lt stop/turn pcb relay
Trlr rt stop/turn pcb relay
Vehicle inclination sensor
Vehicle shock sensor
W/ 2 speed electric & manual shift control transfer case
W/ active 2 speed push button control transfer case
W/ front seat cooling heater
W/ front seat coooling heater
W/ spo accessory rear view camera
W/ spo alarm
W/ steering wheel heater
W/o 2 speed electric & manual shift control transfer case
W/o active 2 speed push button control transfer case
W/o front seat cooling heater
W/o spo accessory rear view camera
W/o steering wheel heater
Wiper control pcb relay
Wiper speed pcb relay
X102
X107
X11
X110
X12
X123
X14
X2 left i/p j/b (lower left side of dash)
X201
X205
X209
X210
X227
X276
X304
X305

6.6L VIN L

6.6L VIN L, Power Distribution Wiring Diagram (1 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN L, Power Distribution Wiring Diagram (1 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(in fuse block jumper harness) j210
(in fuse block jumper harness) j211
(in fuse block jumper harness) j224
(in roof console) emergency vehicle roof lamp relay
(not used)
125a
175a
2b5
Automatic a/c
Auxiliary generator
Body builder emergency lamp
Body control module (bcm)
Data link connector (dlc)
Ecm- batt fuse 11 10a
Engine control module (ecm)
Fuse a 30a
Fuse b 30a
Fuse c 30a
Fuse d 30a
G103 (on front of right cylinder head)
G200 (on right front corner of hvac module)
Generator
Glow plug control module (gpcm)
Hdlp wash fuse 20 20a
Heated seat control module (if equipped)
Hvac batt fuse 36 10a
Hvac control module
I/p 1 accessory power outlet
Instrument panel cluster (ipc)
Intake air heater (iah)
Ipc fuse 43 10a
Itbc fuse 19 15a
J200
J219
Left battery
Left i/p j/b (lower left side of dash)
Ltr fuse 50 20a
Manual a/c
Red
Relay a
Relay b
Right battery
Right i/p j/b (in right end of x2 dash)
Seo b2 fuse 34 30a
Starter motor
Stud 2 fuse 58 30a
Tcm-batt fuse 7 15a
To left i/p j/b (diagram 4 of 5)
To roof beacon switch (diagram 2 of 5)
To stud 1 fuse 63 (diagram 2 of 5)
Trailer brake control module (if equipped)
Trailer brake control relay (if equipped)
Transfer case encoder motor
Transfer case shift control module
Transmission control module (tcm)
Trec fuse 62 30a
Underhood fuse block (left side of engine compt)
Underhood fuse holder (right side of firewall)
W/ active 2 speed
W/ dual generator & ambulance upfitter sales package
W/ electronic 2 speed & active 2 speed
W/ emergency vehicle roof lamp relay
W/ wrecker emergency lamp provisions
W/ wrecker relay
Wrecker relay
Wsw/htr fuse 61 60a
X109
X116
X14
X205
X214
X224
X228
X313
X331

6.6L VIN L, Power Distribution Wiring Diagram (2 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN L, Power Distribution Wiring Diagram (2 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

& vacuum/hydraulic brakes
(in camper harness) j414
(in sliding rear window jumper harness) j336
(left side of dash) i/p fuse block
(not used)
(w/ individual front seat) j315
2b1
3b4
Abs-1 fuse 56 40a
Abs-2 fuse 8 25a
Bcm fuse 10a
Blower motor control module
Body control module (bcm)
Comfort & decor level 3 convenience package
Cooled seats fuse 24 30a
Crew cab
Ctsy fuse 5 15a
Dash)
Ddm fuse 15a
Dim fuse 10a
Driver door lock/ window switch
Driver seat 2 circuit breaker cb3 25a
Driver seat adjuster switch
Driver window switch
Dsm fuse 10a
Elec run board fuse 60 30a
Electronic brake control module (ebcm)
Except comfort & decor level 3 convenience package
Extended cab & power window
From ipc c fuse 43 (diagram 1 of 5)
From right i/p j/b (diagram 1 of 5)
Front seat
G200 (on right front corner of hvac module)
Heavy duty abs fuse 55 60a
Hvac blwr fuse 65 40a
J323
Lbec 1 fuse 59 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x1
Left rear window switch
Lt dr circuit breaker 25a
Mbec 1 fuse 64 60a
Memory seat module (msm)
Obs det fuse 20 10a
Of dash)
Outside rearview mirror switch
Pass seat 1 circuit breaker cb2 25a
Passenger door lock/ window switch
Passenger seat adjuster switch
Passenger seat lumbar switch
Passenger window switch
Pwr mir fuse 2a
Pwr rear wndw circuit breaker cb4 25a
Rear hvac fuse 30a
Rear object sensor control module (w/ rear parking assist)
Rear seat fuse 20a
Rear wpr fuse 25a
Red
Remote control door lock receiver (rcdlr)
Right i/p j/b (in right end of dash) x6
Right i/p j/b (in right end of x3
Right rear window switch
Roof beacon relay (in overhead console)
Roof beacon switch
Rt doors circuit breaker cb1 25a
Rt stop trn fuse 8 15a
S/roof fuse 31 30a
Sliding rear window close relay
Sliding rear window open relay
Stud 1 fuse 63 40a
Sunroof module
To lgm fuse 66 (diagram 3 of 5)
To pdm fuse (diagram 3 of 5)
To pdm fuse 9 (diagram 3 of 5)
To splice j318 (diagram 4 of 5)
Trailer connector
Underhood fuse block (left side of engine compt)
W/ active & vacuum power brake control & 10 series
W/ active brake
W/ active brake & 10 series
W/ active brake & w/o 10 series & vacuum/hydraulic brakes
W/ camper trailer provision
W/ comfort & decor level 3 convenience package
W/ driver power seat adjuster
W/ hydraulic brakes
W/ individual
W/ individual front seat
W/ individual front seat & power mirror
W/ passenger power seat adjuster
W/ power window
W/ rear power window
W/ roof beacon relay
W/ roof mounted provi- sions
W/ sunroof
W/ wrecker & emergency vehicle roof lamp relay
W/o 10 series
W/o camper trailer provision
W/o individual
W/o individual front seat
W/o individual front seat & power mirror
X10
X11
X12
X303
X304
X305
X313
X320
X414
X700
X800

6.6L VIN L, Power Distribution Wiring Diagram (3 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN L, Power Distribution Wiring Diagram (3 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(in pto jumper harness) (w/ power take off) j127
(left side of dash) i/p fuse block
(not used)
(on right front corner of hvac module) g200
2a1
3b2
Air bag batt fuse 42 15a
Alc/comp fuse 54 40a
Amp fuse 38 30a
Audio amplifier (premium performance enhanced audio speaker system)
Audio speaker system
Automatic a/c
Aux pwr 2 fuse 2 20a
Aux pwr fuse 16 20a
Body control module (bcm)
Center console accessory power outlet
Center seat accessory power outlet (w/ full feature center console)
Chime module
Crew cab w/ individual front seat
Crew cab/ extended cab w/ performance exhanced audio & front compartment console
Dash)
Digital radio receiver (if equipped)
Enhanced audio speaker system
Esc/alc exh fuse 1 30a
From abs-2 fuse 8 (diagram 2 of 5)
From left i/p j/b (diagram 2 of 5)
From lt dr circuit breaker (diagram 2 of 5)
Front seat
G304 (on lower right "b" pillar)
Garage door opener (gdo)
Hvac control module
I/p 2 accessory power outlet
Inflatable restraint passenger presence system (pps) module (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Info fuse 22 10a
Is lps fuse 10a
J203
J304
Lbec 2 fuse 67 60a
Left i/p j/b (lower left side of dash)
Left i/p j/b (lower left side x10
Lgm fuse 66 30a
Lock pcb relay
Lock/unlock pcb relay
Lt stop trn fuse 6 15a
Manual a/c
Nca
Of dash)
Passenger door lock/ window switch
Pdm fuse 9 (w/ comfort & decor level 3 convenience package) 15a
Performance enhanced
Power locks w/o individual front seat & power mirror
Power take off (pto) relay
Premium performance
Pto fuse 44 15a
Radio
Rdo fuse 39 15a
Rear seat audio (rsa) control (if equipped)
Right i/p j/b (in right end of dash)
Right i/p j/b (in right end of x3
Rse fuse 19 5a
Stop lamps fuse 15a
To body control module (diagram 4 of 5)
To dlis fuse 32 (diagram 4 of 5)
Underhood fuse block (left side of engine compt)
Unlock pcb relay
Vehicle communication interface module (vcim)
Video display
W/ custom front compartment floor console
W/ front bench seat
W/ individual
W/ individual front seat & power mirror
W/ luxury
W/ onstar
W/ rear seat entertain- ment package
W/ universal garage door opener
W/ wrecker, emergency vehicle roof lamp & body builder emergency lamp
W/o individual
W/o luxury
W/o luxury & radio
W/o radio
Windshield washer solvent heater (if equipped)
X11
X123
X124
X212
X301
X304
X305
X306
X319

6.6L VIN L, Power Distribution Wiring Diagram (4 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN L, Power Distribution Wiring Diagram (4 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(in instrument panel harness) j231
(in passenger seat harness, 15 cm from seat adjuster motor breakout) j318
(in steering column harness) j216
(not used)
12v
2b3
4 speed a/t w/ accessory steering wheel & automatic electronic cruise control
6 speed a/t
Acc
Acc volt
Automatic transmission manual shift switch
Automatic transmission shift lever
Body control module (bcm)
Column harness) j213
Comfort & decor level 3 convenience package w/o individual front seat & power mirror
Dlis fuse 32 2a
Driver seat back ventilation heating & cooling module
Driver seat cushion ventilation heating & cooling module
Driver window switch
Except comfort & decor level 3 convenience package w/ individual front seat & power mirror
From cooled seats fuse 24 (diagram 2 of 5)
From lbec 2 fuse 67 (diagram 3 of 5)
From mobile radio fuse block (diagram 1 of 5)
From pin a4 (left i/p j/b) (diagram 5 of 5)
From underhood fuse block (diagram 3 of 5)
Ign
Ignition switch
Inflatable restraint steering wheel module coil
J212 (in steering column harness)
J280 (instrument panel harness, 6.5 cm from x205 breakout)
Key in ignition switch
Left i/p j/b (lower left side of dash)
Left steering wheel control switch
Nca
Off
Passenger seat back ventilation heating & cooling module
Passenger seat cushion ventilation heating & cooling module
Passenger window switch
Pnk
Rear sliding window switch (if equipped)
Rearview camera image display module
Red
Right i/p j/b (in right end of x2 dash)
Right steering wheel control switch
Run
Start
Sunroof control module (if equipped)
Theft deterrent module (tdm)
To run/crnk relay (diagram 5 of 5)
To underhood fuse block (diagram 5 of 5)
Transfer case shift control switch
Underhood fuse block (left side of engine compt)
W/ accessory steering wheel & automatic electronic cruise control
W/ accessory steering wheel control
W/ engine control power take off (pto) controls
W/ power window
W/ rear view camera
W/ seat heater
W/o accessory steering wheel & automatic electronic cruise control
W/o accessory steering wheel control
W/o engine control power take off (pto) controls
W/o rear view camera
X115
X123
X124
X14
X201
X202
X219
X303
X304
X305
X313
X500
X600

6.6L VIN L, Power Distribution Wiring Diagram (5 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN L, Power Distribution Wiring Diagram (5 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(in engine harness) j130
(in fuse block jumper harness) j220
(in spo theft harness) j227
(left side of engine compt) underhood fuse block
(lower left side of dash) left i/p j/b
(not used)
7.5a
A/c cmprsr relay
Air bag ign fuse 37 10a
Aux hvac- ign fuse 45 10a
Bck/up lamp pcb relay
Chmsl pcb relay
Climate control seat module
Comfort & decor level 3 convenience package & w/ luxury
Digital video disc (dvd) control module (if equipped)
Drl pcb relay
Eap fuse 35 15a
Ecm-ign fuse 53 15a
Electric shift & active 2 speed
Electronic adjustable pedals pcb relay
Electronic compass module (comfort & decor level 3 convenience package)
Engine control module (ecm)
Fan fuse 68 10a
Fan relay
Fog lamp relay
From body control module (diagram 4 of 5)
From dlis fuse 32 (diagram 4 of 5)
Front drive axle actuator
Frt wash pcb relay
Frt wpr fuse 33 25a
Fuel pmp relay
G103 (on front of right cylinder head)
Glow plug control module (gpcm)
Hdlp lo/hid relay
Heated steering wheel control module
Heated steering wheel control module inline fuse
Hi beam pcb relay
Horn pcb relay
Hvac-ign fuse 52 10a
Inflatable restraint i/p module on/off indicator (if equipped)
Inflatable restraint sensing & diagnostic module (sdm)
Inflatable restraint steering wheel module coil
Inside rearview mirror (isrvm) (if equipped)
Instrument panel cluster (ipc)
J105
L/gate pcb relay
Left air temperature actuator (automatic a/c)
Left i/p j/b (lower left side of dash) x9
Misc ign fuse 40 10a
Mode actuator
Nca
Park enable pcb relay
Pnk
Pnk c
Power take off (pto) module (if equipped)
Prk lamp relay
Pwr/trn relay
Rear defog relay
Rear view camera
Rear wash pcb relay
Recirculation actuator (if equipped)
Red
Right air temperature actuator (automatic a/c) air temperature actuator (manual a/c)
Right i/p j/b (in right end of dash)
Run/ crnk relay
Security indicator lamp
Seo b1 fuse 15a
Seo/alc fuse 51 10a
Stop lamp switch
Strtr relay
To j280 (diagram 4 of 5)
Trailer brake control module (if equipped)
Trans ign 1 fuse 15a
Transfer case shift control module
Transmission control module (tcm)
Trlr lt stop/turn pcb relay
Trlr rt stop/turn pcb relay
Vehicle inclination sensor
Vehicle shock sensor
W/ 2 speed electric & manual shift control transfer case
W/ active 2 speed push button control transfer case
W/ front seat cooling heater
W/ front seat coooling heater
W/ spo accessory rear view camera
W/ spo alarm
W/ steering wheel heater
W/o 2 speed electric & manual shift control transfer case
W/o active 2 speed push button control transfer case
W/o front seat cooling heater
W/o spo accessory rear view camera
W/o steering wheel heater
Wiper control pcb relay
Wiper speed pcb relay
X102
X107
X11
X110
X12
X123
X14
X2 left i/p j/b (lower left side of dash)
X201
X205
X209
X210
X227
X276
X304
X305

POWER DOOR LOCKS

Power Door Locks Wiring Diagram, with Bucket Seats & Power Mirrors for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Power Door Locks Wiring Diagram, with Bucket Seats & Power Mirrors for GMC Cab & Chassis Sierra HD 2012 3500:

3a4
3a6
3b3
3b4
A13
Ant
Back door unlck diode
Bcm fuse 15 10a
Body control module (bcm) (lower left side of dash)
Coax
Comfort & decor level 3
Computer data lines system
Convenience package
Dim fuse 7 10a
Driver door latch assembly (rear of driver's door)
Driver door lock switch
Driver door unlck diode
Driver information center (dic) display
Dsm fuse 25 10a
Except comfort & decor level 3
Front door lck diode
G201 (upper left corner of dash)
G302 (below right side of passenger's seat)
Gmlan
Gnd
Ground distribution system
Hot at all times
I/p fuse block (left side of dash)
Instrument panel cluster (ipc)
Interior lights system
J502
J602
Keyless entry antenna
Lck 1 fuse 21 15a
Lck 2 fuse 11 15a
Lck cntrl
Lck sig
Left rear door latch assembly (crew cab) (rear of left rear door)
Lock actuator
Lock pcb relay
Logic
Passenger door latch assembly (rear of passenger's front door)
Passenger door lock switch
Pdm fuse 9 drv unlck fuse 26 15a
Power distribution system
Rear door lck diode
Remote control door lock receiver (rcdlr) (top rear of passenger compt)
Right i/p junction block (in right x3 end of dash)
Right rear door latch assembly (crew cab) (rear of right rear door)
Security indicator
System interior lights
Tan
Unlck 1 fuse 18 15a
Unlck 2 fuse 10 15a
Unlck cntrl
Unlck sig
Unlock pcb relay
W/ power window
W/o power window
X202
X501
X600
X700
X800

Power Door Locks Wiring Diagram, without Bucket Seats & Power Mirrors for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Power Door Locks Wiring Diagram, without Bucket Seats & Power Mirrors for GMC Cab & Chassis Sierra HD 2012 3500:

3b2
4a7
Bcm fuse 15 10a
Body control module (bcm) (lower left side of dash)
Coax
Computer data lines system
Ddm fuse 4 15a
Dim fuse 7 10a
Driver door latch assembly (in rear of driver's front door)
Driver door lock actuator
Driver door lock switch
Driver door lock/ window switch
Driver information center (dic) display
Dsm fuse 25 10a
G200 (on right front corner of hvac module)
G201 (upper left corner of dash)
G302 (below right side of passenger's seat)
Gmlan
Gnd
Ground distribution system
Hot at all times
I/p fuse block (left side of dash)
Instrument panel cluster (ipc)
Key switch
Keyless entry antenna
Lck 1 fuse 21 15a
Lck cntrl
Left rear door latch assembly (crew cab) (rear of left rear door)
Level 3 convenience package
Lock
Lock actuator
Lock/ unlock pcb relay
Logic
Low ref
Passenger door latch assembly (in rear of passenger's front door)
Passenger door lock actuator
Passenger door lock switch
Passenger door lock/ window switch
Pdm fuse 9 15a
Power distribution system
Remote control door lock receiver (rcdlr) (top rear of passenger compt)
Right i/p junction block (in right x6 end of dash)
Right rear door latch assembly (crew cab) (rear of right rear door)
Security indicator
Sw sig
Tan
Unlck 1 fuse 18 15a
Unlck cntrl
Unlock
W/ comfort & decor
X700
X800

POWER MIRRORS

Electrochromic Mirror Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Electrochromic Mirror Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(except 4.3l & 6.6l: on lower left front of engine) (4.3l: top left rear of engine) (6.6l: on front of right cylinder head)
(if equipped) mirror display
4.3l
6.6l
Automatic day/night mirror
Aux hvac ign fuse 45 fuse 48 10a
Backup rly
Body control module (bcm) (lower left side of dash)
Driver door lock/ window switch
Driver outside rearview mirror (w/ power folding mirror)
Emergency sw
Except 4.3l
Except 4.3l & 6.6l
Except 6.6l
Exterior lights system
G102 g107 g103
G200 (on right front corner of hvac module)
Gnd
Green light
Hot at all times
I/p fuse block (left side of dash)
Ign 1
Inside rearview mirror (isrvm)
J105
J220 (w/ pnk
J328
Led sig
Left i/p junction block (lower left side of dash)
Logic
Low ref
Mirr sig
Mirror day/night automatic
Navigation system
Onstar button assembly
Onstar sw
Pnk
Power distribution system
Red light
Run/crank rly
Run/crnk relay
Selector switch
Sig
Steering wheel heater)
Tele- phone sw
Underhood fuse block (left side of engine compt)
Vehicle communication interface module (vcim) (behind center of dash)
Video sig +
Video sig -
Volt
W/ comfort & decor level 3 convience package
X10
X203

Power Mirrors Wiring Diagram, with Power Folding Mirror (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Power Mirrors Wiring Diagram, with Power Folding Mirror (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

5v ref
Automatic day/night mirror
Computer data lines system
Ddm fuse 4 15a
Defogger switch
Down
Driver door lock/ window switch
Driver outside rearview mirror
Electrochromic mirror circuit
Extend
Extend ctrl
Exterior lights system
G201 (upper left corner of dash)
Gnd
Hot at all times
Hvac control module
I/p fuse block (left side of dash)
J500 (in driver's outside rearview mirror jumper)
J501 (in driver's outside rearview mirror jumper)
L/r select
Left
Logic
Low ref
Mtr comm
Outside rearview mirror switch
Pnk
Position ctrl
Retract
Retract ctrl
Right
Sens sig
Serial data
Sply volt
Sw pwr

Power Mirrors Wiring Diagram, with Power Folding Mirror (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Power Mirrors Wiring Diagram, with Power Folding Mirror (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

3b2
4a7
5v ref
Computer data lines system
Extend ctrl
Exterior lights system
G200 (on right front corner of hvac module)
Gnd
Ground distribution system
Hot at all times
I/p fuse block (left side of dash)
J600 (in passenger's outside rearview mirror jumper)
J601 (in passenger's outside rearview mirror jumper)
Low ref
Mtr comm
Passenger door lock/ window switch
Passenger outside rearview mirror
Pdm fuse 9 15a
Position ctrl
Power distribution system x1
Retract ctrl
Right i/p junction block (in right end of dash) x6
Sens sig
Serial data
Sply volt

Power Mirrors Wiring Diagram, without Power Folding Mirror for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Power Mirrors Wiring Diagram, without Power Folding Mirror for GMC Cab & Chassis Sierra HD 2012 3500:

Defogger system
Down
Driver outside rearview mirror
Exterior lights system
G201 (upper left corner of dash)
Hot at all times
I/p fuse block (left side of dash)
Interior lights system
J502
Left
Nca
Outside rearview mirror switch
Passenger outside rearview mirror
Pwr mir fuse 14 2a
Right
Tan
X500
X600

POWER SEATS

Adjustable Pedal Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Adjustable Pedal Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(except 6.6l) (6.6l)
Body control module (bcm) (lower left side of dash)
Eap fuse 38 fuse 35 15a
Electronic adjustable pedal (eap) assembly (under left side of dash)
Electronic adjustable pedals pcb relay
Fwd
G200 (on right front corner of hvac module)
Hot at all times
I/p multi-function switch
J200
Left i/p junction block (lower left side of dash)
Park enable pcb relay
Rwd
Underhood fuse block (left side of engine compt)

Climate Control Seats Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Climate Control Seats Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

B10
B12
Computer data lines system
Cooled seats fuse 24 30a x2
Ddm fuse 4 15a
Driver back heated seat element (in driver's seat back)
Driver cushion heated seat element (in driver's seat cushion)
Driver seat back ventilation heating & cooling module
Driver seat cushion ventilation heating & cooling module
G304 (on lower right "b" pillar)
Gmlan
Hot at all times
I/p fuse block (left side of dash)
J314
J317
J318
J319 (in driver seat harness, 9 cm from heated seat cushion element breakout)
Lh st sig
Logic
Memory seat module (msm) (under front of driver's seat)
Passenger back heated seat element (in passenger's seat back)
Passenger cushion heated seat element (in passenger's seat cushion)
Passenger seat back ventilation heating & cooling module
Passenger seat cushion ventilation heating & cooling module
Pnk
Rh st sig
Tan
X303
X305

Climate Control Seats Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Climate Control Seats Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(on right front corner of hvac module) g200
3b2
4a7
Back ind
Batt pos volt
Bck &
Bck & cush
Computer data lines system
Cool ind
Cush
Driver door lock/ window switch
Driver memory/ heated & cooled seat switch
Drv heat cool ctrl
Drv heat cool sw sig
Drv heat hi temp ctrl
Drv heat lo temp ctrl
Drv heat mid temp ctrl
Drv seat back ctrl
Drv st bck & csh ctrl
G201 (upper left corner of dash)
Gmlan serial data
Gnd
Ground distribution system
Hi ind
Hot at all times
I/p fuse block (left side of dash)
Lo ind
Low reference
Memory sw dim ctrl
Mid ind
Pas heat back ctrl
Pas heat cool ctrl
Pas heat cool sw sig
Pas heat hi temp ctrl
Pas heat lo temp ctrl
Pas heat mid temp ctrl
Pas seat back ctrl
Pas st bck & csh ctrl
Passenger door lock/ window switch
Passenger memory/ heated & cooled seat switch
Pdm fuse 9 15a
Pnk
Power distribution system
Right i/p junction block (in right end of dash)
Seat back
Seat cool
Seat heat
Tan

Driver Power Seat Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Driver Power Seat Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

Driver seat 2 circuit breaker cb3 25a
Driver seat adjuster motor assembly (on driver's seat track)
Driver seat adjuster switch
Driver seat front vertical motor
Driver seat horizontal motor
Driver seat rear vertical motor
Fwd
G303 (crew cab/ extended cab) (on lower left "b" pillar)
G304 (regular cab) (on lower right "b" pillar)
Hot at all times
Left i/p junction block (lower left side of dash)
Nca
Rwd
Tan
X12
X303

Heated Seats Wiring Diagram, with Memory (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Heated Seats Wiring Diagram, with Memory (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

A10
A11
A12
A13
Computer data lines system
Driver back heated seat element (in driver's seat back)
Driver cushion heated seat element (in driver's seat cushion)
Driver seat 2 circuit breaker cb3 25a
Elem ctrl
G303 (on lower left "b" pillar)
Gnd
Hot at all times
J306
J311 (heated driver seat harness, 10 cm from heated seat elements breakout)
J316 (heated passenger seat harness, 10 cm from heated seat elements breakout)
Left i/p junction block (lower left side of dash)
Low ref
Memory seat module (under front of driver's seat)
Nca
Passenger back heated seat element (in passenger's seat back)
Passenger cushion heated seat element (in passenger's seat cushion)
Pnk
Serial data
Sply volt
Tan
Temp sig
X12
X303
X305

Heated Seats Wiring Diagram, with Memory (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Heated Seats Wiring Diagram, with Memory (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

3b2
4a7
Back & cushion ind ctrl
Back & cushion sw
Back ind ctrl
Back seat ind
Back sig
Computer data lines system
Cushion/back ind
Cushion/back sw
Ddm fuse 4 15a
Dimming ctrl
Driver door lock/ window switch
Driver heated seat switch
Dsm fuse 25 10a
G200 (on right front corner of hvac module)
G201 (upper left corner of dash)
Gnd
Ground distribution system
Hi temp ind ctrl
High ind
Hot at all times
I/p fuse block (left side of dash)
Low ind
Low ref
Low temp ind ctrl
Med ind
Med temp ind ctrl
Passenger door lock/ window switch
Passenger heated seat switch
Pdm fuse 9 15a
Power distribution system
Right i/p junction block (in right end of dash)
Seat back ind
Seat back sw
Serial data

Heated Seats Wiring Diagram, without Memory (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Heated Seats Wiring Diagram, without Memory (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(except 6.6l) (6.6l)
Back & cushion heat ind
Back heat
Back heat ind
Computer data lines system
Cushion & back heat
Cushion heat
Cushion temp
Driver back heated seat element (in driver's seat back)
Driver cushion heated seat element (in driver's seat cushion)
Element volt
G200 (on right front corner of hvac module)
Ground
Ground distribution system
Heated seat control module
Heated seat cushion
High heat ind
Hot at all times
J311 (heated driver seat harness, 10 cm from heated seat elements breakout)
J316 (heated passenger seat harness, 10 cm from heated seat elements breakout)
J350
Left i/p junction block (lower left side of dash)
Low heat ind
Low ref
Low speed gmlan
Medium heat ind
Nca
Passenger back heated seat element (in passenger's seat back)
Pnk
Seat back heat
Seat back temp
Seo b2 fuse 37 fuse 34 30a
Tan
Underhood fuse block (left side of engine compt)
X14
X331
X331 h
X331 j
X332
X332 d

Heated Seats Wiring Diagram, without Memory (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Heated Seats Wiring Diagram, without Memory (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(heated seat body harness, 5 cm into heated seat switches breakout) j351
Back
Back ind
Cushion & back
Cushion & back ind
Driver heated seat switch
G200 (on right front corner of hvac module)
High
Interior lights system
J350
Low
Mid
Nca
Passenger cushion heated seat element (in passenger's seat cushion)
Passenger heated seat switch
Pnk
Tan
X330
X331
X332

Heated Steering Wheel Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Heated Steering Wheel Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(except 6.6l) (6.6l)
(on right front corner of hvac module) g200
7.5a
Aux hvac ign fuse 48 fuse 45 10a
B10
Body control module (bcm) (lower left side of dash)
Dim sig
G200 (on right front corner of hvac module)
Gnd
Heated steering fuse holder (on steering column)
Heated steering wheel
Heated steering wheel control module (in steering wheel)
Heated steering wheel ind
Heated steering wheel switch
Hot w/ run/crnk relay energized
Ign
Inflatable restraint steering wheel module coil (behind steering wheel)
Inflatable restraints steering wheel module coil (behind steering wheel)
J214
J215
J220
Led cntrl
Left steering wheel control switch
Nca
Pnk
Red
Sns sig
Sw sig
Underhood fuse block (left side of engine compt)
Volt ref
Whl cntrl
X201
X276
X277

Passenger Power Seat Wiring Diagram, 8-Way Power Seat for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Passenger Power Seat Wiring Diagram, 8-Way Power Seat for GMC Cab & Chassis Sierra HD 2012 3500:

(in passenger's seat back)
Fwd
G304 (on lower right "b" pillar)
Hot at all times
J314
J315
Left i/p junction block (lower left side of dash)
Nca
Pass seat 1 circuit breaker cb2 25a
Passenger seat adjuster motor assembly (on passenger's seat track)
Passenger seat adjuster switch
Passenger seat front vertical motor
Passenger seat horizontal motor
Passenger seat lumbar horizontal motor (in passenger's seat back)
Passenger seat lumbar switch
Passenger seat lumbar vertical motor
Passenger seat rear vertical motor
Passenger seat recline motor (lower right side of passenger's seat back)
Pnk
Rwd
Tan
X11
X305
X325

Passenger Power Seat Wiring Diagram, with 6-Way Power Seat for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Passenger Power Seat Wiring Diagram, with 6-Way Power Seat for GMC Cab & Chassis Sierra HD 2012 3500:

Fwd
G304 (on lower right "b" pillar)
Hot at all times
J304
Left i/p junction block (lower left side of dash)
Nca
Pass seat 1 circuit breaker cb2 25a
Passenger seat adjuster motor assembly (on passenger's seat track)
Passenger seat adjuster switch
Passenger seat front vertical motor
Passenger seat horizontal motor
Passenger seat rear vertical motor
Rwd
Tan
X11
X305

POWER TOP/SUNROOF

Power Top/Sunroof Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Power Top/Sunroof Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(gasoline) (diesel)
2b1
2b3
Acc volt
B x313
Close
Comfort & decor level 3 convenience package w/o individual front seat & power mirror
Crew cab
Except comfort & decor level 3 convenience package w/o individual front seat & power mirror
Express close (crew cab)
Express open
G200 (on right front corner of hvac module)
Ground
Hot at all times
Illumination lamp
Interior lights system
J231
J324
Left i/p junction block (lower left side of dash)
Open
Pnk
Power distribution system
Right i/p junction block (in right end of dash) x2
Roof close sig
Roof open sig
S/roof fuse 34 fuse 31 30a
Sunroof module (in front of sunroof, above headliner)
Sunroof motor
Sunroof switch
Sw xprs sig
Underhood fuse block (left side of engine compartment)
Underhood module (bcm) (lower left side of dash)
Vent
Vnt close sig
Vnt open sig

POWER WINDOWS

Power Windows Wiring Diagram, with Bucket Seats & Power Mirrors for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Power Windows Wiring Diagram, with Bucket Seats & Power Mirrors for GMC Cab & Chassis Sierra HD 2012 3500:

(in right end of dash) right i/p junction block
(on lower left "b" pillar) (extend cab/ crew cab) g303
(upper left corner of dash) g201
3b4
Accessory voltage
B+ volt
Body control module (bcm) (lower left side of dash)
Crew cab
Down
Down sig
Driver window motor (inside driver's door)
Driver window switch
Express
Extended cab w/ rear side access door
G200 (on right front corner of hvac module)
G304 (on lower right "b" pillar)
Ground
Hot at all times
I/p fuse block (left side of dash)
Illumination
Interior lights system
J231
J502
J603
Left front window switch
Left i/p junction block (lower left side of dash) x1
Left rear window motor (in left rear door)
Left rear window switch
Lf down ctrl
Lf up ctrl
Lockout rr ctrl
Lockout sig
Logic
Lr down ctrl
Lr down sig
Lr up ctrl
Lr up sig
Lt dr circuit breaker 25a
Pass down sig
Pass up sig
Passenger window motor (inside passenger's door)
Passenger window switch
Rf down ctrl
Rf up ctrl
Right front window switch
Right rear window motor (in right rear door)
Right rear window switch
Rr down ctrl
Rr down sig
Rr up ctrl
Rr up sig
Rt doors circuit breaker cb1 25a
Sig
Tan
Up sig
Window switch right rear
X11
X202
X500
X501
X600
X700
X800

Power Windows Wiring Diagram, without Bucket Seats & Power Mirrors for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Power Windows Wiring Diagram, without Bucket Seats & Power Mirrors for GMC Cab & Chassis Sierra HD 2012 3500:

(on lower left "b" pillar) (extend cab/ crew cab) g303
(upper left corner of dash)
3b1
3b4
4a7
B+ volt
Body control module (bcm) (lower left side of dash)
Crew cab
Down
Driver door lock/window switch
Driver window motor (inside driver's door)
Express
Extended cab w/ rear side access door
G200 (on right front corner of hvac module)
G201
G304 (on lower right "b" pillar)
Ground
Ground distribution system
Hot at all times
I/p fuse block (left side of dash)
Illumination
Interior lights system
Left front window switch
Left i/p junction block (lower left side of dash)
Left rear window motor (in left rear door)
Left rear window switch
Lf down ctrl
Lf up ctrl
Lo spd serial data
Lo speed serial data
Lockout ind
Lockout switch
Logic
Lr down ctrl
Lr down sig
Lr up ctrl
Lr up sig
Lt dr circuit breaker 25a
Passenger door lock/window switch
Passenger window motor (inside passenger's door)
Pwr wnd lockout rr ctrl
Pwr wnd lockout rr sig
Pwr wnd motor rf down ctrl
Pwr wnd motor rf up ctrl
Pwr wnd motor rr down ctrl
Pwr wnd motor rr up ctrl
Pwr wnd sw lockout sig
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 rr down signal
Pwr wnd switch rr up signal
Right front window switch
Right i/p junction block (in right end of dash)
Right rear window motor (in right rear door)
Right rear window switch
Rt doors circuit breaker cb1 25a
Signal
Splice pack jx221 (in i/p harness, behind left side of dash)
X11
X700
X800

Sliding Rear Window Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Sliding Rear Window Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(except crew cab) (on lower right "b" pillar)
(on right front corner of hvac module)
Acces- sory voltage
Body control module (bcm) (lower left side of dash)
Close
G200
G304 g307 (crew cab) (at right rear corner of passenger compt)
Hot at all times
Illumi- nation
Interior lights system
J323
J335
J336
Left i/p junction block (lower left side of dash)
M tan
Open
Power distribution system
Pwr rear wndw circuit breaker cb4 25a
Sliding rear window close relay
Sliding rear window motor (right rear of passenger compt)
Sliding rear window open relay
Sliding rear window switch
Tan
X12
X208
X304
X320

RADIO

Radio Wiring Diagram, with UQA, without UYS & Y91 (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Radio Wiring Diagram, with UQA, without UYS & Y91 (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of roof)
(lower left side of dash) left i/p junction block
Amp fuse 41 fuse 38 30a
Ampl cntrl
Antenna
Aud sig
Cellular telephone microphone (in overhead console)
Cellular/ navigation & digital radio antenna
Cellular/ navigation antenna
Cellular/navigation & digital radio antenna (left front of roof)
Coax
Computer data lines system
Dash)
Diesel
Digital audio system
Digital radio receiver (if equipped) (behind right end of dash)
Drain wire
G nca
G301 (below left side of passenger's seat)
Gasoline
Gmlan
Gmlan+
Gmlan-
Gnd
Green led
Hot at all times
I/p fuse block (left side of
Info fuse 22 10a
Interior lights system
J307
Keypad sig
L aud+
L aud-
Left i/p junction block (lower left x3
Lf aud+
Lf aud-
Low ref
Low ref/ drain wire
Lr aud+
Lr aud-
Nca
Pins: 6-16 not used
Pnk
R aud+
R aud-
Radio
Rdo fuse 42 fuse 39 15a
Red led
Rem sig/ led cntrl
Rf aud+
Rf aud-
Rr aud+
Rr aud-
Side of dash)
Tan
Tele sig
Underhood fuse block (left side of engine compt)
Usb cable
Usb receptacle (if equipped)
Vehicle communication interface module (vcim) (behind center of dash)
Voice sig
Voice sig/
W/ on star
W/ onstar
W/ s-band & traffic digital audio system
W/o onstar
W/o s-band & traffic
X12
X122
X203
X204
X212
X213
X213 coax
X265
X301
X304

Radio Wiring Diagram, with UQA, without UYS & Y91 (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Radio Wiring Diagram, with UQA, without UYS & Y91 (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(below left side of passenger's seat) g301
(under rear of center console) audio amplifier
2a1
A13
A14
Ampl cntrl
Computer data lines system
Drain wire
G301 (below left side of passenger's seat)
Gmlan
Gnd
Hot at all times
I/p fuse block (left side of dash)
Infrared ref
Infrared v
Inside rearview mirror (isrvm)
J330
L infrared
L subwfr+
L subwfr-
Left i/p j/b (lower left side of dash)
Lf aud+
Lf aud-
Lf spk+
Lf spk-
Lr aud+
Lr aud-
Nca
Nca h
Package
Pnk
R infrared
R subwfr+
R subwfr-
Rear seat audio (rsa) control
Rem enable
Rf aud+
Rf aud-
Rf spk+
Rf spk-
Right i/p j/b (in right end of dash)
Rr aud
Rr aud+
Rr aud-
Rse fuse 19 5a
Subwoofer speaker
Tan
W/ rear seat entertainment
X12
X202
X203
X204
X212
X301

Radio Wiring Diagram, with UQA, without UYS & Y91 (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Radio Wiring Diagram, with UQA, without UYS & Y91 (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(in steering wheel harness, 9 cm from inflatable restraint steering wheel module coil x2)
12 volt
3a1
3a2
Accessory steering wheel control
Aud low ref
Audio/video adapter
Aux vid h
Aux video h
B10
B11
B12
Body control module (bcm) (lower left side of dash)
Computer data lines system
Crew cab
Cruise control system
Data bus (+)
Data bus (-)
Drain wire
Dvd aud com
Dvd aud sh
Dvd comm
Dvd+
Dvd-
Extended cab
Gnd
I/p fuse block (left side of dash)
Inflatable restraint steering wheel module coil (if equipped) (behind steering wheel)
Infrared transmitter
Infrared+
Infrared-
J216 (in steering column harness)
J217
L aud sig
L aux aud
L aux audio
L dvd+
Left front speaker
Left front tweeter speaker
Left rear speaker
Nca
Nca b+
Nca dvd+
Nca dvd-
Nca gnd
Nca video cntrl
Nca video sig
Next
Pnk
R aud sig
R aux aud
R aux audio
R dvd+
Radio
Right front speaker
Right front tweeter speaker
Right i/p junction block (in right end of dash)
Right rear speaker
Right steering wheel control switch
Seek
Shield)
Signal+
Signal-
Source
Sw sig
Tan
Transmissions system
Video cntrl
Video display
Video sig
Voice rec
Volt
Volume down
Volume up
W/ automatic cruise control
W/ automatic cruise control/
W/o automatic cruise control
X204
X206
X212
X301
X306
X700
X800

Radio Wiring Diagram, with UYS & UQA, without Y91 (1 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Radio Wiring Diagram, with UYS & UQA, without Y91 (1 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(pins: 21-27 not used)
Amp ctrl
Amp fuse 41 fuse 38 30a
Antenna
Coax
Computer data lines system
Diesel
Drain wire
G200 (on right front corner of hvac module)
Gasoline
Gmlan
Gnd
Hot at all times
Inside rearview mirror (isrvm)
J328
Left i/p junction block (lower left x3
Lf aud+
Lf aud-
Logic
Low ref
Lr aud+
Lr aud-
Nca
Onstar button assembly
Radio
Rdo fuse 42 fuse 39 15a
Rem sig
Rf aud+
Rf aud-
Rr aud+
Rr aud-
Side of dash)
Tan
Underhood fuse block (left side of engine compt)
Usb cable
Usb receptacle (if equipped)
Voice sig
X203
X212
X265

Radio Wiring Diagram, with UYS & UQA, without Y91 (2 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Radio Wiring Diagram, with UYS & UQA, without Y91 (2 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of roof)
(lower left side of dash) left i/p junction block
Aud sig
Cellular telephone microphone (in overhead console)
Cellular/ navigation & digital radio antenna
Cellular/ navigation antenna
Coax
Computer data lines system
Dash)
Digital audio system
Drain wire
G nca
G301 (below left side of passenger's seat)
Gmlan
Gmlan+
Gmlan-
Gnd
Green led
Hot at all times
I/p fuse block (left side of
Info fuse 22 10a
J307
Keypad sig
Low ref
Nca
Pins: 6-16 not used
Pnk
Red led
Tan
Vehicle communication interface module (vcim) (behind center of dash)
Voice sig
W/ on star
W/ onstar
W/ s-band & traffic
W/o onstar
W/o s-band & traffic
X12
X203
X204
X212
X213 coax
X301
X304

Radio Wiring Diagram, with UYS & UQA, without Y91 (3 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Radio Wiring Diagram, with UYS & UQA, without Y91 (3 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(under rear of center console) audio amplifier
2a1
A13
A14
Ampl cntrl
Computer data lines system
Drain wire
G301 (below left side of passenger's seat)
Gmlan
Gnd
H nca
Hot at all times
I/p fuse block (left side of dash)
Infrared ref
Infrared v
J/b (lower left side of dash)
J330
L infrared
L subwfr+
L subwfr-
Lf aud+
Lf aud-
Lf spk+
Lf spk-
Lr aud+
Lr aud-
Nca
Package
Pnk
R infrared
R subwfr+
R subwfr-
Rear seat audio (rsa) control
Rem enable
Rf aud+
Rf aud-
Rf spk+
Rf spk-
Right i/p j/b (in right end of dash)
Rr aud
Rr aud+
Rr aud-
Rse fuse 19 5a
Subwoofer speaker
Tan
W/ rear seat entertainment
X12
X202
X204
X212
X301

Radio Wiring Diagram, with UYS & UQA, without Y91 (4 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Radio Wiring Diagram, with UYS & UQA, without Y91 (4 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

3a1
3a2
Aud low ref
B10
B11
B12
Crew cab
Dvd comm
Extended cab
Gnd
I/p fuse block (left side of dash)
Infrared transmitter
L aud sig
L dvd+
Left front speaker
Left front tweeter speaker
Left rear speaker
Nca
Nca b+
Nca dvd+
Nca dvd-
Nca gnd
Nca video cntrl
Nca video sig
Pnk
R aud sig
R dvd+
Right front speaker
Right front tweeter speaker
Right i/p junction block (in right end of dash)
Right rear speaker
Shield)
Signal+
Signal-
Tan
Video display
Volt
X204
X206
X212
X301
X306
X700
X800

Radio Wiring Diagram, with UYS & UQA, without Y91 (5 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Radio Wiring Diagram, with UYS & UQA, without Y91 (5 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(in steering wheel harness, 9 cm from inflatable restraint steering wheel module coil x2)
12 volt
Accessory steering wheel control
Anti-lock brakes system
Audio/video adapter
Aux vid h
Aux video h
Body control module (bcm) (lower left side of dash)
Camera sig (+)
Camera sig (-)
Computer data lines system
Cruise control system
Data bus (+)
Data bus (-)
Drain wire
Dvd aud com
Dvd aud sh
Dvd+
Dvd-
Inflatable restraint steering wheel module coil (if equipped) (behind steering wheel)
Infrared+
Infrared-
J216 (in steering column harness)
J217
L aux aud
L aux audio
L dvd+
Navigation system
Nca
Next
Pnk
R aux aud
R aux audio
R dvd+
Radio
Right steering wheel control switch
Seek
Source
Sw sig
Tan
Transmissions system
Video cntrl
Video sig
Voice rec
Voice sig/ drainwire
Voice sig/ low ref
Volume down
Volume up
Vss
W/ automatic cruise control
W/ automatic cruise control/
W/o automatic cruise control
X203
X301

Radio Wiring Diagram, with UYS without Y91 & UQA (1 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Radio Wiring Diagram, with UYS without Y91 & UQA (1 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(pins: 21-27 not used)
Antenna
Coax
Computer data lines system
Diesel
Dnd
G200 (on right front corner of hvac module)
Gasoline
Gmlan
Hot at all times
Inside rearview mirror (isrvm)
J328
Lf spk+
Lf spk-
Logic
Low ref
Lr aud+
Lr aud-
Onstar button assembly
Radio
Rdo fuse 42 fuse 39 15a
Rf spk+
Rf spk-
Rr aud+
Rr aud-
Tan
Underhood fuse block (left side of engine compt)
Usb cable
Usb receptacle (if equipped)
Voice sig
X203
X212
X265

Radio Wiring Diagram, with UYS without Y91 & UQA (2 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Radio Wiring Diagram, with UYS without Y91 & UQA (2 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of roof)
(lower left side of dash) left i/p junction block
(or nca)
(pins: 6-16 not used)
Aud sig
Cellular telephone microphone (in overhead console)
Cellular/ navigation & digital radio radio antenna
Cellular/ navigation antenna
Coax
Computer data lines system
Drain wire
G nca
G301 (below left side of passenger's seat)
Gmlan
Gmlan+
Gmlan-
Gnd
Green led
Hot at all times
I/p fuse block (left side of dash)
Info fuse 22 10a
J307
Keypad sig
Low ref
Nca
Pnk
Red led
Tan
Vehicle communication interface module (vcim) (behind center of dash)
Voice sig
W/ on star
W/ onstar
W/ s-band & traffic digital audio system
W/o onstar
W/o s-band & traffic digital audio system
X12
X203
X204
X212
X213
X304

Radio Wiring Diagram, with UYS without Y91 & UQA (3 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Radio Wiring Diagram, with UYS without Y91 & UQA (3 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

2a1
A13
A14
Computer data lines system
Drain wire
G301 (below left side of passenger's seat)
Gmlan
Gnd
Hot at all times
I/p fuse block (left side of dash)
Infrared ref
Infrared v
J330
L infrared
Nca
Pnk
R infrared
Rear seat audio (rsa) control
Right i/p j/b (in right end of dash)
Rse fuse 19 5a
Tan
W/ rear seat entertainment package
W/ s-band digital audio system/vehicle communication system
X202
X204
X212
X301

Radio Wiring Diagram, with UYS without Y91 & UQA (4 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Radio Wiring Diagram, with UYS without Y91 & UQA (4 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(w/ performance enhanced audio) left front tweeter speaker
3a1
3a2
Aud low ref
B10
Crew cab
Crew cab/ extended cab
Dvd comm
Extended cab
Gnd
I/p fuse block (left side of dash)
Infrared transmitter
L aud sig
L dvd+
Left front speaker
Left rear speaker
Mounted & dual front door mounted 4 speaker system
Nca
Nca b+
Nca dvd+
Nca dvd-
Nca gnd
Nca video cntrl
Nca video sig
Pnk
R aud sig
R dvd+
Regular cab
Right front speaker
Right front tweeter speaker
Right i/p junction block (in right end of dash)
Right rear speaker
Shield)
Signal+
Signal-
Tan
Video display
Volt
W/ dual extended range quarter
W/ performance enhanced audio
X204
X206
X212
X306
X700
X800

Radio Wiring Diagram, with UYS without Y91 & UQA (5 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Radio Wiring Diagram, with UYS without Y91 & UQA (5 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

12 volt
Anti-lock brakes system
Audio/video adapter
Aux vid h
Aux video h
Body control module (bcm) (lower left side of dash)
Camera sig (+)
Camera sig (-)
Computer data lines system
Cruise control system
Data bus (+)
Data bus (-)
Drain wire
Dvd aud com
Dvd aud sh
Dvd+
Dvd-
Inflatable restraint steering wheel module coil (if equipped) (behind steering wheel)
Infrared+
Infrared-
J216 (in steering column harness)
J217 (in steering wheel harness, 9 cm from inflatable restraint steering wheel module coil x2)
L aux aud
L aux audio
L dvd+
Navigation system
Nca
Next
Pnk
R aux aud
R aux audio
R dvd+
Radio
Right steering wheel control switch
Seek
Source
Sw sig
Tan
Transmissions system
Video cntrl
Video sig
Video sig/ drain wire
Voice rec
Voice sig/ low ref
Volume down
Volume up
Vss
W/ automatic cruise control
W/ automatic cruise control accessory steering wheel control
W/o automatic cruise control
X203
X301

Radio Wiring Diagram, with UYS, Y91 & UQA (1 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Radio Wiring Diagram, with UYS, Y91 & UQA (1 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(pins: 21-27 not used)
2a1
Amp fuse 41 fuse 38 30a
Antenna
Coax
Computer data lines system
Diesel
Drain wire
G200 (on right front corner of hvac module)
Gasoline
Gmlan
Gnd
Hot at all times
I/p fuse block (left side of dash)
Info fuse 22 10a
Inside rearview mirror (isrvm)
J328
Lf aud+
Lf aud-
Logic
Low ref
Lr aud+
Lr aud-
Nca
Onstar button assembly
Power distribution system
Radio
Rdo fuse 42 fuse 39 15a
Rem sig
Rf aud+
Rf aud-
Right i/p junction block (in right end of dash) x2
Rr aud+
Rr aud-
Rse fuse 19 5a
Tan
Underhood fuse block (left side of engine compt)
Usb cable
Usb receptacle (if equipped)
Voice sig
W/ onstar
W/ rear seat entertainment package
X203
X265

Radio Wiring Diagram, with UYS, Y91 & UQA (2 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Radio Wiring Diagram, with UYS, Y91 & UQA (2 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of roof)
(pins: 6-16 not used)
Aud sig
Cellular telephone microphone (in overhead console)
Cellular/ navigation & digital radio antenna
Cellular/ navigation antenna
Coax
Computer data lines system
Digital audio system
Drain wire
G nca
G301 (below left side of passenger's seat)
Gmlan
Gmlan+
Gmlan-
Gnd
Green led
Keypad sig
Left i/p junction block (lower left side of dash)
Low ref
Nca
Pnk
Red led
Tan
Vehicle communication interface module (vcim) (behind center of dash)
Voice sig
W/ onstar
W/ s-band & traffic digital audio system
W/o onstar
W/o s-band & traffic
X12
X203
X204
X213
X301
X304

Radio Wiring Diagram, with UYS, Y91 & UQA (3 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Radio Wiring Diagram, with UYS, Y91 & UQA (3 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

(below left side of passenger's seat) g301
(left side of center console) noise compensation microphone
(lower left side of dash) left i/p j/b
(under rear of center console) audio amplifier
Amplf+
Amplf-
Computer data lines system
Drain wire
F centr spk+
F centr spk-
G301 (below left side of passenger's seat)
Gmlan
Gnd
Infrared ref
Infrared v
L infrared
L subwfr+
L subwfr-
Left i/p j/b (lower x12
Left side of dash)
Lf aud+
Lf aud-
Lf spk+
Lf spk-
Lr aud+
Lr aud-
Micro sig
Nca
Pnk
R infrared
R subwfr+
R subwfr-
Rear seat audio (rsa) control
Rf aud+
Rf aud-
Rf spk+
Rf spk-
Rr aud+
Rr aud-
Subwoofer speaker
Tan
X12
X301
X309

Radio Wiring Diagram, with UYS, Y91 & UQA (4 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Radio Wiring Diagram, with UYS, Y91 & UQA (4 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

3a1
3a2
Aud low ref
B10
B11
B12
C10
C11
C12
Center i/p speaker
Crew cab
Dvd comm
Extended cab
Gnd
I/p fuse block (left side of dash)
Infrared transmitter
L aud sig
L dvd+
Left front speaker
Left front tweeter speaker
Left rear speaker
Nca
Nca b+
Nca dvd+
Nca dvd-
Nca enable sig
Nca gnd
Nca h
Nca video cntrl
Nca video sig
Pnk
R aud sig
R dvd+
Right front speaker
Right front tweeter speaker
Right i/p junction block (in right end of dash)
Right rear speaker
Shield)
Signal+
Signal-
Tan
Video display
Volt
X204
X206
X301
X306
X700
X800

Radio Wiring Diagram, with UYS, Y91 & UQA (5 of 5) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Radio Wiring Diagram, with UYS, Y91 & UQA (5 of 5) for GMC Cab & Chassis Sierra HD 2012 3500:

12 volt
Ampl+
Ampl-
Anti-lock brakes system
Audio/video adapter
Aux vid h
Aux video h
Body control module (bcm) (lower left side of dash)
Camera sig (-)
Camera video sig (+)
Computer data lines system
Cruise control system
Data bus (+)
Data bus (-)
Drain wire
Dvd aud com
Dvd aud sh
Dvd+
Dvd-
Inflatable restraint steering wheel module coil (if equipped) (behind steering wheel)
Infrared+
Infrared-
J216 (in steering column harness)
J217 (in steering wheel harness, 9 cm from inflatable restraint steering wheel module coil x2)
L aux aud
L aux audio
L dvd+
Low ref/ drain wire
Navigation system
Nca
Next
Pnk
R aux aud
R aux audio
R dvd+
Radio
Right steering wheel control switch
Seek
Source
Sw sig
Tan
Transmissions system
Video cntrl
Video sig
Voice rec
Voice sig/ low ref
Volume down
Volume up
Vss
W/ automatic cruise control
W/ automatic cruise control accessory steering wheel control
W/o automatic cruise control
X203
X301

Radio Wiring Diagram, with UYS, Y91 & without UQA (1 of 4) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Radio Wiring Diagram, with UYS, Y91 & without UQA (1 of 4) for GMC Cab & Chassis Sierra HD 2012 3500:

(pins: 21-27 not used)
Antenna
Coax
Computer data lines system
Diesel
G200 (on right front corner of hvac module)
Gasoline
Gmlan
Gnd
Hot at all times
I/p fuse block (left side of dash)
Info fuse 22 10a
Inside rearview mirror (isrvm)
J328
Lf spk+
Lf spk-
Logic
Low ref
Lr aud+
Lr aud-
Onstar button assembly
Power distribution system
Radio
Rdo fuse 42 fuse 39 15a
Rem sig
Rf spk+
Rf spk-
Rr aud+
Tan
Underhood fuse block (left side of engine compt)
Usb cable
Usb receptacle (if equipped)
Voice sig
W/ onstar
X203
X265

Radio Wiring Diagram, with UYS, Y91 & without UQA (2 of 4) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Radio Wiring Diagram, with UYS, Y91 & without UQA (2 of 4) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of roof)
(pins: 6-16 not used)
Aud sig
Cellular telephone microphone (in overhead console)
Cellular/ navigation & digital radio antenna
Cellular/ navigation antenna
Coax
Computer data lines system
Digital audio system
Drain wire
G301 (below left side of passenger's seat)
Gmlan
Gmlan+
Gmlan-
Gnd
Green led
J307
Keypad sig
Left i/p junction block (lower left side of dash)
Low ref
Nca
Pnk
Red led
Tan
Vehicle communication interface module (vcim) (behind center of dash)
Voice sig
W/ onstar
W/ s-band & traffic
W/o onstar
W/o s-band & traffic
X12
X203
X204
X213
X301
X304

Radio Wiring Diagram, with UYS, Y91 & without UQA (3 of 4) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Radio Wiring Diagram, with UYS, Y91 & without UQA (3 of 4) for GMC Cab & Chassis Sierra HD 2012 3500:

(w/ performance enhanced audio) left front tweeter speaker
3a1
3a2
A13
A14
B10
Computer data lines system
Crew cab
Crew cab/ extended cab
Drain wire
Extended cab
G301 (below left side of passenger's seat)
Gmlan
Gnd
I/p fuse block (left side of dash)
Infrared ref
Infrared v
J330
L infrared
Left front speaker
Left rear speaker
Mounted & dual front door mounted 4 speaker system
Nca
Pnk
R infrared
Rear seat audio (rsa) control (if equipped)
Regular cab
Right front speaker
Right front tweeter speaker
Right i/p junction block (in right end of dash)
Right rear speaker
Tan
W/ dual extended range quarter
W/ performance enhanced audio
W/ s-band digital audio system / vehicle comunication system
X202
X204
X212
X301
X700
X800

Radio Wiring Diagram, with UYS, Y91 & without UQA (4 of 4) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Radio Wiring Diagram, with UYS, Y91 & without UQA (4 of 4) for GMC Cab & Chassis Sierra HD 2012 3500:

12 volt
2a1
Anti-lock brakes system
Aud low ref
Audio/video adapter
Aux vid h
Aux video h
Body control module (bcm) (lower left side of dash)
Camera sig (+)
Computer data lines system
Cruise control system
Data bus (+)
Data bus (-)
Drain wire
Dvd aud com
Dvd aud sh
Dvd comm
Dvd+
Dvd-
Gnd
Hot at all times
I/p fuse block (left side of dash)
Inflatable restraint steering wheel module coil (if equipped) (behind steering wheel)
Infrared transmitter
Infrared+
Infrared-
J216 (in steering column harness)
J217 (in steering wheel harness, 9 cm from inflatable restraint steering wheel module coil x2)
L aud sig
L aux aud
L aux audio
L dvd+
Low ref/ drain wire
Navigation system
Nca
Nca b+
Nca dvd+
Nca dvd-
Nca enable sig
Nca gnd
Nca video sig
Next
Pnk
R aud sig
R aux aud
R aux audio
R dvd+
Radio
Right i/p j/b (in right end of dash)
Right steering wheel control switch
Rse fuse 19 5a
Seek
Shield)
Signal+
Signal-
Source
Sw sig
Tan
Transmissions system
Video cntrl
Video display
Video sig
Voice rec
Voice sig/ref
Volt
Volume down
Volume up
Vss
W/ automatic cruise control
W/ automatic cruise control/ accessory steering wheel control
W/ rear seat entertainment package
W/o automatic cruise control
X203
X204
X206
X301
X306

Radio Wiring Diagram, with Y91 & UQA, without UYS (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Radio Wiring Diagram, with Y91 & UQA, without UYS (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of roof)
(pins: 6-16 not used)
2a1
Amp fuse 41 fuse 38 30a
Antenna
Aud sig
Cellular telephone microphone (in overhead console)
Cellular/ navigation & digital radio antenna
Cellular/ navigation antenna
Cellular/navigation & digital radio antenna (left front of roof)
Coax
Computer data lines system
Diesel
Digital radio receiver (behind right end of dash)
Drain wire
G nca
G301 (below left side of passenger's seat)
Gasoline
Gmlan
Gmlan+
Gmlan-
Gnd
Green led
Hot at all times
I/p fuse block (left side of dash)
Info fuse 22 10a
Interior lights system
J204
Keypad sig
L aud+
L aud-
Led cntrl
Left i/p junction block (lower left side of dash)
Lf aud+
Lf aud-
Low ref
Low ref/ drain wire
Lr aud+
Lr aud-
Nca
Pnk
Power distribution system
R aud+
R aud-
Radio
Rdo fuse 42 fuse 39 15a
Red led
Rem sig
Rf aud+
Rf aud-
Right i/p junction block (in right end of dash) x2
Rr aud+
Rr aud-
Rse fuse 19 5a
Tan
Underhood fuse block (left side of engine compt)
Usb cable
Usb receptacle (if equipped)
Vehicle communication interface module (vcim) (behind center of dash)
Voice sig
Voice sig/ audio sig
W/ onstar
W/ rear seat entertainment package
W/ s-band & traffic digital audio system
W/o onstar
W/o s-band & traffic digital audio system
X12
X203
X204
X213
X265
X301
X304

Radio Wiring Diagram, with Y91 & UQA, without UYS (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Radio Wiring Diagram, with Y91 & UQA, without UYS (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(below left side of passenger's seat) g301
(left side of center console) noise compensation microphone
(lower left side of dash) left i/p j/b
(under rear of center console) audio amplifier
Computer data lines system
Drain wire
F centr spk+
F centr spk-
G301 (below left side of passenger's seat)
Gmlan
Gnd
Infrared ref
Infrared v
Inside rearview mirror (isrvm)
L infrared
L subwfr+
L subwfr-
Left i/p j/b (lower x12
Left side of dash)
Lf aud+
Lf aud-
Lf spk+
Lf spk-
Lr aud+
Lr aud-
Micro sig
Nca
Pnk
R infrared
R subwfr+
R subwfr-
Rear seat audio (rsa) control
Rf aud+
Rf aud-
Rf spk+
Rf spk-
Rr aud+
Rr aud-
Subwoofer speaker
Tan
X12
X203
X204
X301
X309

Radio Wiring Diagram, with Y91 & UQA, without UYS (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Radio Wiring Diagram, with Y91 & UQA, without UYS (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

12 volt
3a1
3a2
Aud low ref
Audio/video adapter
Aux vid h
Aux video h
B10
B11
B12
Body control module (bcm) (lower left side of dash)
Center i/p speaker
Computer data lines system
Crew cab
Cruise control system
Data bus (+)
Data bus (-)
Drain wire
Dvd aud com
Dvd aud sh
Dvd comm
Dvd+
Dvd-
Extended cab
Gnd
I/p fuse block (left side of dash)
Inflatable restraint steering wheel module coil (if equipped) (behind steering wheel)
Infrared transmitter
Infrared+
Infrared-
J216 (in steering column harness)
J217 (in steering wheel harness, 9 cm from inflatable restraint steering wheel module coil x2)
L aud sig
L aux aud
L aux audio
L dvd+
Left front speaker
Left front tweeter speaker
Left rear speaker
Nca
Nca b+
Nca dvd+
Nca dvd-
Nca enable sig
Nca gnd
Nca video cntrl
Nca video sig
Next
Pnk
R aud sig
R aux aud
R aux audio
R dvd+
Radio
Right front speaker
Right front tweeter speaker
Right i/p junction block (in right end of dash)
Right rear speaker
Right steering wheel control switch
Seek
Shield)
Signal+
Signal-
Source
Sw sig
Tan
Transmissions system
Video cntrl
Video display
Video sig
Voice rec
Volt
Volume down
Volume up
W/ automatic cruise control
W/ automatic cruise control accessory steering wheel control
W/o automatic cruise control
X204
X206
X301
X306
X700
X800

Radio Wiring Diagram, with Y91, without UYS & UQA (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Radio Wiring Diagram, with Y91, without UYS & UQA (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of roof) cellular/ navigation antenna cellular/ navigation & digital radio antenna
(pins: 6-16 not used)
Antenna
Aud sig
Cellular telephone microphone (in overhead console)
Cellular/navigation & digital radio antenna (left front of roof)
Coax
Computer data lines system
Diesel
Digital radio receiver (behind right end of dash)
Drain wire
G301 (below left side of passenger's seat)
Gasoline
Gmlan
Gmlan+
Gmlan-
Gnd
Green led
Hot at all times
I/p fuse block (left side of dash)
Info fuse 22 10a
Interior lights system
J204
J307
Keypad sig
L aud+
L aud-
Led cntrl
Left i/p junction block (lower left side of dash)
Lf spk+
Lf spk-
Low ref
Low ref/ drain wire
Lr aud+
Lr aud-
Nca
Pnk
Power distribution system
R aud+
R aud-
Radio
Rdo fuse 42 fuse 39 15a
Red led
Rem sig
Rf spk+
Rf spk-
Rr aud+
Rr aud-
Tan
Traffic digital audio system
Traffic digital audio system w/ s-band &
Underhood fuse block (left side of engine compt)
Usb cable
Usb receptacle (if equipped)
Vehicle communication interface module (vcim) (behind center of dash)
Voice sig
Voice sig/ tele sig
W/ onstar
W/o onstar
W/o s-band &
X12
X203
X204
X213
X265
X301
X304

Radio Wiring Diagram, with Y91, without UYS & UQA (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Radio Wiring Diagram, with Y91, without UYS & UQA (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

2a1
A13
A14
Computer data lines system
Drain wire
G301 (below left side of passenger's seat)
Gmlan
Gnd
Hot at all times
I/p fuse block (left side of dash)
Infrared ref
Infrared v
Inside rearview mirror (isrvm)
J330
L infrared
Nca
Pnk
R infrared
Rear seat audio (rsa) control (if equipped)
Right i/p j/b (in right end of dash)
Rse fuse 19 5a
Tan
W/ rear seat entertainment package
W/ s-band digital audio system / vehicle comunication system
X202
X203
X204
X212
X301

Radio Wiring Diagram, with Y91, without UYS & UQA (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Radio Wiring Diagram, with Y91, without UYS & UQA (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(w/ performance enhanced audio) left front tweeter speaker
12 volt
3a1
3a2
Aud low ref
Audio/video adapter
Aux vid h
Aux video h
B10
Body control module (bcm) (lower left side of dash)
Computer data lines system
Crew cab
Crew cab/ extended cab
Cruise control system
Data bus (+)
Data bus (-)
Drain wire
Dvd aud com
Dvd aud sh
Dvd comm
Dvd+
Dvd-
Extended cab
Gnd
I/p fuse block (left side of dash)
Inflatable restraint steering wheel module coil (if equipped) (behind steering wheel)
Infrared transmitter
Infrared+
Infrared-
J216 (in steering column harness)
J217 (in steering wheel harness, 9 cm from inflatable restraint steering wheel module coil x2)
L aud sig
L aux aud
L aux audio
L dvd+
Left front speaker
Left rear speaker
Mounted & dual front door mounted 4 speaker system
Nca
Nca b+
Nca dvd+
Nca dvd-
Nca enable sig
Nca gnd
Nca video sig
Next
Pnk
R aud sig
R aux aud
R aux audio
R dvd+
Radio
Regular cab
Right front speaker
Right front tweeter speaker
Right i/p junction block (in right end of dash)
Right rear speaker
Right steering wheel control switch
Seek
Shield)
Signal+
Signal-
Source
Sw sig
Tan
Transmissions system
Video cntrl
Video display
Video sig
Voice rec
Volt
Volume down
Volume up
W/ automatic cruise control
W/ automatic cruise control/ accessory steering wheel control
W/ dual extended range quarter
W/ performance enhanced audio
W/o automatic cruise control
X204
X206
X212
X301
X306
X700
X800

Radio Wiring Diagram, without UYS, Y91 & UQA (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Radio Wiring Diagram, without UYS, Y91 & UQA (1 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of roof)
(lower left side of dash) left i/p junction block
(or nca)
(pins: 6-16 not used)
Antenna
Aud sig
Cellular telephone microphone (in overhead console)
Cellular/ navigation & digital radio radio antenna
Cellular/ navigation antenna
Cellular/navigation & digital radio antenna (left front of roof)
Coax
Computer data lines system
Diesel
Digital audio system
Digital radio receiver (behind right end of dash)
Drain wire
G nca
G301 (below left side of passenger's seat)
Gasoline
Gmlan
Gmlan+
Gmlan-
Gnd
Green led
Hot at all times
I/p fuse block (left side of dash)
Info fuse 22 10a
Interior lights system
J307
Keypad sig
L aud+
L aud-
Led cntrl
Lf spk+
Lf spk-
Low ref
Low ref/ drain wire
Lr aud+
Lr aud-
Nca
Pnk
R aud+
R aud-
Radio
Rdo fuse 42 fuse 39 15a
Red led
Rf spk+
Rf spk-
Rr aud+
Rr aud-
Tan
Underhood fuse block (left side of engine compt)
Usb cable
Usb receptacle (if equipped)
Vehicle communication interface module (vcim) (behind center of dash)
Voice sig
Voice sig/ tele sig
W/ on star
W/ onstar
W/ s-band & traffic
W/o onstar
W/o s-band & traffic digital audio system
X12
X122
X203
X204
X212
X213
X265
X304

Radio Wiring Diagram, without UYS, Y91 & UQA (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Radio Wiring Diagram, without UYS, Y91 & UQA (2 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

2a1
A13
A14
Computer data lines system
Drain wire
G301 (below left side of passenger's seat)
Gmlan
Gnd
Hot at all times
I/p fuse block (left side of dash)
Infrared ref
Infrared v
Inside rearview mirror (isrvm)
J330
L infrared
Nca
Pnk
R infrared
Rear seat audio (rsa) control
Right i/p j/b (in right end of dash)
Rse fuse 19 5a
Tan
W/ rear seat entertainment package
W/ s-band digital audio system/vehicle communication system
X202
X203
X204
X212
X301

Radio Wiring Diagram, without UYS, Y91 & UQA (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for Radio Wiring Diagram, without UYS, Y91 & UQA (3 of 3) for GMC Cab & Chassis Sierra HD 2012 3500:

(w/ performance enhanced audio) left front tweeter speaker
12 volt
3a1
3a2
Aud low ref
Audio/video adapter
Aux vid h
Aux video h
B10
Body control module (bcm) (lower left side of dash)
Computer data lines system
Crew cab
Crew cab/ extended cab
Cruise control system
Data bus (+)
Data bus (-)
Drain wire
Dvd aud com
Dvd aud sh
Dvd comm
Dvd+
Dvd-
Extended cab
Gnd
I/p fuse block (left side of dash)
Inflatable restraint steering wheel module coil (if equipped) (behind steering wheel)
Infrared transmitter
Infrared+
Infrared-
J216 (in steering column harness)
J217 (in steering wheel harness, 9 cm from inflatable restraint steering wheel module coil x2)
L aud sig
L aux aud
L aux audio
L dvd+
Left front speaker
Left rear speaker
Mounted & dual front door mounted 4 speaker system
Nca
Nca b+
Nca dvd+
Nca dvd-
Nca enable sig
Nca gnd
Nca video sig
Next
Pnk
R aud sig
R aux aud
R aux audio
R dvd+
Radio
Regular cab
Right front speaker
Right front tweeter speaker
Right i/p junction block (in right end of dash)
Right rear speaker
Right steering wheel control switch
Seek
Shield)
Signal+
Signal-
Source
Sw sig
Tan
Transmissions system
Video cntrl
Video display
Video sig
Voice rec
Volt
Volume down
Volume up
W/ automatic cruise control
W/ automatic cruise control/ accessory steering wheel heater
W/ dual extended range quarter
W/ performance enhanced audio
W/o automatic cruise control
X204
X206
X212
X301
X306
X700
X800

Video System Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Video System Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(diesel)
(gas)
(lower left side of dash) left i/p junction block
(on right front corner of hvac module)
Clock sig
Digital video disc (dvd) control module
Driver seat headrest digital video disc (dvd) display
Fm ant
Fm antenna
G200
Gnd
Ground distribution system
Hot w/ run/crnk relay energized
I2c data
Ign
Ign volt
J200
L audio (+)
Passenger seat headrest digital video disc (dvd) display
Pnk
R audio (+)
Red
Seo/alc fuse 54 fuse 51 10a
Underhood fuse block (left side of engine compt)
Video com (-)
Video com(-)
Video sig a (+)
Video sig b (+)
X14
X371
X372
X373
X374

SHIFT INTERLOCK

Shift Interlock Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Shift Interlock Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(lower left side of dash) left i/p junction block
(on lower left front of engine) (except 6.6l & 4.3l) g102
(right rear of engine compt) drive motor generator power inverter module
(top left rear of engine) (4.3l) g107
4-speed a/t
4.3l
6-speed a/t
6.0l (vin g)
6.0l (vin j) hybrid
6.6l
Automatic transmission
Automatic transmission internal mode switch
Automatic transmission internal mode switch (ims)
Automatic transmission shift lock control solenoid
Body control module (bcm) (lower left side of dash)
Brk sw sig
Computer data lines system
Control solenoid valve assembly
Engine control module (ecm) (left front of engine compt, near fan shroud)
Except
Except 4.3l
Exterior lights system
G103 (6.6l) (on front of right cylinder head)
G103 (except 4.3l) (on front of right cylinder head)
G106 (4.3l) (right rear of engine)
G200 (on right front corner of hvac module)
Gmlan hi-spd (+)
Gmlan hi-spd (-)
Gnd
Ground
Hot at all times
Ims ground
J105
J106
J144
J215
Misc ign fuse 43 (except 6.6l) fuse 40 (6.6l) 10a
P/n signal
P/n switch
Park/neutral position (pnp) switch (on left rear side of transmission)
Pnk
Power distribution system
Run/crank relay
Run/crank relay ctrl
Stop lamp switch (top of brake pedal assembly)
Tan
Transmission control module
Transmission control module (left front of engine compt, near fan shroud)
Transmission control module (tcm)
Transmissions system
Underhood fuse block (left side of engine compt)
X175
X205

STARTING/CHARGING

6.0L VIN G

6.0L VIN G, Charging Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, Charging Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

175a
4.3l
6.0l
6.2l, 5.3l & 4.8l
Battery current sensor (4.3l: right rear of engine compt) (hybrid: left side of engine compt)
Body control module (bcm) (lower left side of dash)
Charge ind sig
Charge indicator
Computer data lines system
Current sply
Driver information center (dic)
Engine control module (ecm) (left front of engine compt)
G101 (on lower right radiator support)
G103 (on front of right cylinder head)
Generator
Generator sig
Hot at all times
Instrument panel cluster (ipc)
Ipc fuse 46 10a
Logic
Low ref
Low speed gm lan serial data
Mega fuse 175a
Pnk
Power distribution system
Red
Right battery
Sens sig
Serial data
Serial data +
Serial data -
Tan
Underhood fuse block (left side of engine compt)
Underhood fuse holder (on positive battery terminal)
Volt
W/ 10 series
X109

6.0L VIN G, Starting Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, Starting Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(on front of right cylinder head)
(on front of right cylinder head) (6.6l) g103
(on positive battery terminal)
(right side of firewall) underhood fuse holder
175a
4 speed a/t
4.3l
4.8l
4.8l, 5.3l & 6.2l
5.3l & 6.2l
5v ref
6 speed a/t
6.0l
6.6l
Acc
Allison transmission 6 speed a/t
Automatic transmission
Automatic transmission fluid pressure (tfp) manual valve position switch
Automatic transmission internal mode switch (ims)
Body control module (bcm) (lower left side of dash)
Computer data lines system
Control solenoid valve assembly
Data bus +
Data bus -
Engine control module (ecm) (left front of engine compt)
Except 6.6l
F x2
G101 (diesel: right front corner of engine compt) (except diesel: on lower right radiator support)
G102 (except 6.6l & 4.3l) (on lower left front of engine)
G103
G103 (4.8l) (on front of right cylinder head)
G103 (on front of right cylinder head)
G106 (4.3l) (right rear of engine)
G107 (4.3l) (top left rear of engine)
Gnd
Ign 3 volt
Ignition switch
J105
J106
J144
Lock
Low ref
Mega fuse 175a
Park/ neutral position (pnp) switch (on left rear side of transmission)
Park/neutral signal
Power distribution system
Red
Right battery
Run
Serial data +
Serial data -
Start
Starter motor
Strt rly ctrl
Strtr fuse 62 (except 6.6l) fuse 57 (6.6l) 40a
Strtr relay
Tan
Transmission control module (tcm)
Transmission control module (tcm) (left front of engine compt, near fan shroud)
Transmission park/neutral
Underhood fuse block (left side of engine compt)
Underhood fuse holder
X175
X179

6.6L VIN 8

6.6L VIN 8, Charging Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, Charging Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(in engine chassis harness) (w/ dual generator & ambulance upfitter) j132
Auxiliary generator (w/ dual generator & ambulance upfitter)
Charge ind sig
Charge indicator
Computer data lines system
Driver information center (dic)
Engine control module (ecm) (left front of engine compt)
G101 (right front corner of engine compt)
G103 (on front of right cylinder head)
Generator
Generator sig
Hot at all times
Instrument panel cluster (ipc)
Ipc fuse 43 10a
Logic
Low speed gm lan serial data
Mega fuse 175a
Power distribution system
Red
Right battery
Serial data (+) 1
Serial data (-) 1
Tan
Underhood fuse block (left side of engine compt)
Underhood fuse holder (right side of firewall)
Volt
W/ dual generator & ambulance upfitter
X127

6.6L VIN 8, Starting Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, Starting Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(on front of right cylinder head)
(on front of right cylinder head) (6.6l) g103
(on positive battery terminal)
(right side of firewall) underhood fuse holder
175a
4 speed a/t
4.3l
4.8l
4.8l, 5.3l & 6.2l
5.3l & 6.2l
5v ref
6 speed a/t
6.0l
6.6l
Acc
Allison transmission 6 speed a/t
Automatic transmission
Automatic transmission fluid pressure (tfp) manual valve position switch
Automatic transmission internal mode switch (ims)
Body control module (bcm) (lower left side of dash)
Computer data lines system
Control solenoid valve assembly
Data bus +
Data bus -
Engine control module (ecm) (left front of engine compt)
Except 6.6l
F x2
G101 (diesel: right front corner of engine compt) (except diesel: on lower right radiator support)
G102 (except 6.6l & 4.3l) (on lower left front of engine)
G103
G103 (4.8l) (on front of right cylinder head)
G103 (on front of right cylinder head)
G106 (4.3l) (right rear of engine)
G107 (4.3l) (top left rear of engine)
Gnd
Ign 3 volt
Ignition switch
J105
J106
J144
Lock
Low ref
Mega fuse 175a
Park/ neutral position (pnp) switch (on left rear side of transmission)
Park/neutral signal
Power distribution system
Red
Right battery
Run
Serial data +
Serial data -
Start
Starter motor
Strt rly ctrl
Strtr fuse 62 (except 6.6l) fuse 57 (6.6l) 40a
Strtr relay
Tan
Transmission control module (tcm)
Transmission control module (tcm) (left front of engine compt, near fan shroud)
Transmission park/neutral
Underhood fuse block (left side of engine compt)
Underhood fuse holder
X175
X179

6.6L VIN L

6.6L VIN L, Charging Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN L, Charging Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(in engine chassis harness) (w/ dual generator & ambulance upfitter) j132
Auxiliary generator (w/ dual generator & ambulance upfitter)
Charge ind sig
Charge indicator
Computer data lines system
Driver information center (dic)
Engine control module (ecm) (left front of engine compt)
G101 (right front corner of engine compt)
G103 (on front of right cylinder head)
Generator
Generator sig
Hot at all times
Instrument panel cluster (ipc)
Ipc fuse 43 10a
Logic
Low speed gm lan serial data
Mega fuse 175a
Power distribution system
Red
Right battery
Serial data (+) 1
Serial data (-) 1
Tan
Underhood fuse block (left side of engine compt)
Underhood fuse holder (right side of firewall)
Volt
W/ dual generator & ambulance upfitter
X127

6.6L VIN L, Starting Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN L, Starting Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(on front of right cylinder head)
(on front of right cylinder head) (6.6l) g103
(on positive battery terminal)
(right side of firewall) underhood fuse holder
175a
4 speed a/t
4.3l
4.8l
4.8l, 5.3l & 6.2l
5.3l & 6.2l
5v ref
6 speed a/t
6.0l
6.6l
Acc
Allison transmission 6 speed a/t
Automatic transmission
Automatic transmission fluid pressure (tfp) manual valve position switch
Automatic transmission internal mode switch (ims)
Body control module (bcm) (lower left side of dash)
Computer data lines system
Control solenoid valve assembly
Data bus +
Data bus -
Engine control module (ecm) (left front of engine compt)
Except 6.6l
F x2
G101 (diesel: right front corner of engine compt) (except diesel: on lower right radiator support)
G102 (except 6.6l & 4.3l) (on lower left front of engine)
G103
G103 (4.8l) (on front of right cylinder head)
G103 (on front of right cylinder head)
G106 (4.3l) (right rear of engine)
G107 (4.3l) (top left rear of engine)
Gnd
Ign 3 volt
Ignition switch
J105
J106
J144
Lock
Low ref
Mega fuse 175a
Park/ neutral position (pnp) switch (on left rear side of transmission)
Park/neutral signal
Power distribution system
Red
Right battery
Run
Serial data +
Serial data -
Start
Starter motor
Strt rly ctrl
Strtr fuse 62 (except 6.6l) fuse 57 (6.6l) 40a
Strtr relay
Tan
Transmission control module (tcm)
Transmission control module (tcm) (left front of engine compt, near fan shroud)
Transmission park/neutral
Underhood fuse block (left side of engine compt)
Underhood fuse holder
X175
X179

SUPPLEMENTAL RESTRAINTS

Supplemental Restraints Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Supplemental Restraints Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(top right side of dash) inflatable restraint i/p module
6.0l (vin j)
6.6l
Air bag batt fuse 45 fuse 42 15a
Air bag ign fuse 40 fuse 37 10a
Batt pos voltage
Computer data lines system
Convience package w/0 non-bucket front individual seat & o/s mirrors
Disable sw rtn
Disable switch
Driver inflatable restraint roof rail module (behind left side of headliner trim)
Except 6.0l (vin j)
Except 6.6l
Extended cab/ crew cab
G302 (below right side of passenger's seat)
Gmlan serial data
Gnd
High control stage 1
High control stage 2
High ctrl i/p stage 2
Hot at all times
Hot w/ run/crnk relay energized
Ign 1 voltage
Inflatable restraint i/p module disable switch (w/manual suppression switch)
Inflatable restraint sensing & diagnostic module (sdm) (under driver's seat)
Inflatable restraint steering wheel module (in steering wheel)
Inflatable restraint steering wheel module coil (behind steering wheel)
L side impact sens sig
Left front inflatable restraint side impact sensor (sis) (in driver's door)
Left i/p junction block (lower left side of dash)
Left inflatable restraint front end sensor (w/ 10 series) inflatable restraint front end sensor (w/o 10 series) (w/ 10 series: on lower left radiator support) (w/o 10 series: behind center of front bumper)
Low control stage 1
Low control stage 2
Low ctrl i/p stage 1
Low ctrl i/p stage 2
Low ref
Lt hi roof rail ctrl
Lt high ctrl
Lt lo roof rail ctrl
Lt low ctrl
Nca
Pin shorting bars engaged when module connector is disconnected from harness: (shorting bars are connected between following pins: conn x1: 1-2, 3-4, 5-6 & 7-8 conn x2: 13-14, 15-16 7-8 & 13-14
Pnk
R side impact sens sig
Regular cab
Right front inflatable restraint side impact sensor (sis) (in passenger's door)
Right inflatable restraint front end sensor (w/ 10 series) (on lower right radiator support)
Right inflatable restraint side impact module (w/ 10 series) (outer side of right front seat back)
Rt high ctrl
Rt low ctrl
Rt sig
Sensor sig
Shorting bar
Stage 1
Stage 2
Tan
Underhood fuse block (left side of engine compt)
W/ 10 series
W/ 20/30/31 series
W/ child presence detector
W/ comfort & decor level 3
W/ non-bucket front individual seat & o/s mirrors w/o comfort & decor level 3 convience package
W/o 10 series
W/o child presence detector
X1 n5
X103
X11
X202
X2oo b1
X4 d4
X5 g2
X500
X502
X601

Supplemental Restraints Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Supplemental Restraints Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(below right side of pass- enger's seat) g302
(below right side of passenger's seat) g302
(except crew cab) j308
(on right "b" pillar) passenger seat belt pretensioner
(w/ multi directional passenger power seat adjaster)
(w/manual suppression switch & child
6.0l (vin j)
A x303
Air bag ind
Back light ind
Bar shorting
Belt ind seat
Cab
Computer data lines system
Crew cab
Ctrl on ind
Data
Data serial
Driver inflatable restraint seat position sensor (w/ 10 series) (right front corner of driver's seat track)
Driver seat belt buckle
Driver seat belt pretensioner (on left "b" pillar)
Driver seat belt switch
Except 6.0l (vin j)
Except crew cab
Extended
Extended cab/ crew cab
G200 (on right front corner of hvac module)
High ctrl
Ign
Individual seat
Inflatable restraint passenger presence system (pps) module (w/ child presence detector) (under front passenger seat)
Inflatable restraint sensing & diagnostic module (sdm) (under driver's seat)
Instrument panel cluster (ipc)
J305 (w/ 10 series) (in driver seat harness, 5 cm from x303)
J323
J355
J355 (w/ multi- directional passenger power seat adjuster)
Left i/p junction block (lower left side of dash)
Left inflatable restraint side impact module (w/ 10 series) (outer side of left front seat back)
Left rear inflatable restraint side impact sensor (sis) (in left rear door)
Logic
Low ctrl
Low ref
Lt seat pos sens sig
Nca
Off ind ctrl
Pass
Passenger air bag off
Passenger air bag on
Passenger inflatable restraint roof rail module (behind right side of headliner trim)
Passenger inflatable restraint seat belt tension sensor (w/ child presence detector)
Passenger inflatable restraint seat position sensor (w/ 10 series & except crew cab)
Passenger seat belt buckle
Passenger seat belt ind
Passenger seat belt switch (w/ 10 series)
Pin shorting bars engaged when module connector is disconnected from harness: (shorting bars are connected between following pins: conn x2: 37-38, 39-40 & 53-54)
Pnk
Pnk d
Presence detector) inflatable restraint i/p module indicator
Regular cab
Right rear inflatable restraint side impact sensor (sis) (in right rear door)
Rt high ctrl
Rt low ctrl
Rt seat belt sw
Rt seat belt sw sig
Rt seat pos sens sig
Seat belt
Seat belt ind
Sens module sig
Sens sig
Serial data
Shorting bar
Voltage
W/ child presence detector
W/ non-bucket front
W/o non-bucket front
X2 b
X303 a8
X304
X305
X305 g
X700
X800

TRANSMISSION

6.0L VIN G

6.0L VIN G, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(lower left side of dash)
(lower left side of dash) left i/p junction block
(on front of right cylinder head) g103
(upper left corner of dash) g201
Accy volt
Anti-lock brakes system
Automatic transmission
Automatic transmission fluid temperature (tft) sensor
Automatic transmission fluid temperature (tft) sensor signal
Aux hvac- ign fuse 45 10a
Batt +
Brake pedal sig
Computer data lines system
Control solenoid valve assembly
Driver information center (dic) display
Engine control module (ecm) (left front of engine compt, near fan shroud)
Exterior lights system
G4 x5
Gmlan data bus (+)
Gmlan data bus (-)
Gnd
Ground distribution system
Hot at all times
Hot w/ run/crnk relay energized
Ign
Ign 1 volt
Instrument cluster panel (ipc)
J104 (in engine harness, 5 cm from engine control module connector breakout)
J106
J130 (w/ 2 speed transfer case)
J220 (w/ steering wheel heater)
Left i/p junction block
Logic
Low reference
Misc ign fuse 43 10a
Park/neutral sig
Pc solenoid 1 control
Pc solenoid 2 control
Pc solenoid 3 control
Pc solenoid 4 control
Pc solenoid 5 control
Pnk
Power distribution system
Pressure control (pc) solenoid valve 1
Pressure control (pc) solenoid valve 2
Pressure control (pc) solenoid valve 3
Pressure control (pc) solenoid valve 4
Pressure control (pc) solenoid valve 5
Replicated tos signal
Serial data bus (+)
Serial data bus (-)
Shift solenoid (ss) 1 control
Shift solenoid (ss) 2 control
Shift solenoid (ss) valve 1
Shift solenoid (ss) valve 2
Stop lamp switch (top of brake pedal assembly)
Tan
Tcm-batt fuse 14 10a
To automatic transmission internal mode switch (ims) (diagram 2 of 2)
Torque converter clutch (tcc) pressure control (pc) solenoid valve
Torque converter clutch pressure control solenoid control
Tos sig
Tow/ haul ind
Trans ign1 fuse 19 15a
Transmission control module (tcm)
Underhood fuse block (left side of engine compt)
Vehicle speed sensor (vss) (on transfer case tailshaft housing)
Vss high sig
Vss low sig
X205

6.0L VIN G, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(diagram 1 of 2)
(in instrument panel harness, in transfer case shift control module connector breakout) j207
(lower left side of dash) transfer case shift control module
12v ref
A/t manual shift switch
Acc volt
Automatic transmission
Automatic transmission fluid pressure (tfp) manual valve position switch
Automatic transmission input shaft speed (iss) sensor
Automatic transmission internal mode switch (ims)
Automatic transmission output shaft speed (iss) sensor
Automatic transmission shift lever
Body control module (lower left side of dash)
Computer data lines system
Control solenoid valve assembly
Cruise control system
From automatic transmission a
Ftp switch 1 voltage
Ftp switch 3 voltage
Ftp switch 4 voltage
Ftp switch 5 voltage
G201 (upper left corner of dash)
Gmlan serial data bus +
Gmlan serial data bus -
Gnd
Input speed sensor (iss) signal
J127
J216
J230
Nca
Output speed sensor (oss) signal
Pnk
Red
Start
Tan
Tap up/ tap down sw sig
Tow/ haul sw sig
Tow/ haul switch
Transmission control module (tcm)
Transmission range switch sig a
Transmission range switch sig b
Transmission range switch sig c
Transmission range switch sig p
W/ 2 speed transfer case
W/ electronic steering control
W/o 2 speed transfer case
X1 pnk
X3 tan

6.0L VIN G, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Cab & Chassis Sierra HD 2012 3500:

(diesel)
(gas)
(lower left side of dash) left i/p junction block
2 hi ind ctrl
2-hi ind
4 hi ind ctrl
4 lo ind ctrl
4-hi ind
4-lo ind
4wd ind
5 volt ref
8v sply
Accy wakeup srl data
Aux hvac-ign fuse 48 fuse 45 10a
Axle actr ctrl
Axle sw sig
B12
Batt +
Body control module (bcm) (lower left side of dash)
C10
Computer data lines system
Diesel
Dirtn sig
Front axle actuator (0n front axle assembly)
G102 (on lower left front of engine)
G103 (on front of right cylinder head)
G201 (upper left corner of dash)
G4 pnk
Gas
Gmlan bus +
Gmlan bus -
Gnd
Hot at all times
Hot w/ run/crnk relay energized
Ign
Ign 1 volt
Incrmt encoder sig
Instrument panel cluster (ipc)
Interior lights system
J103 (6.0l (vin g)
J105
J220 (w/ steering wheel heater)
Left i/p junction block (lower left side of dash)
Lo ref
Logic
Low ref
Misc ign fuse 43 fuse 40 10a
Mtr ctrl a
Mtr ctrl b
Neutral ind
Neutral ind ctrl
Pnk
Power distribution system
Pulse sig
Right i/p junction block (in right end of dash)
Ser data
Shift motor
Sw sig
Tan
Trans ig1 fuse 19 fuse 13 15a
Transfer case encoder motor (on transfer case)
Transfer case shift control module (lower left side of dash)
Transfer case shift control switch (on top left of transfer case)
Trec fuse 67 fuse 62 30a
Underhood fuse block (left side of engine compt)
Wiper/washer system
X1 a3 pnk
X109
X110

6.0L VIN G, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.0L VIN G, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Cab & Chassis Sierra HD 2012 3500:

(4.3l)
(4.8l, 5.3l, 6.ol & 6.2l)
(6.6l)
(gas) (diesel)
(lower left side of dash) left i/p junction block
(on lower left front of engine)
(top left rear of engine) g107
4.3l
4.8l, 5.3l, 6.0l (vin j) & 6.2l
4wd ind
4wd low sig
6.0l (vin g)
6.6l
Aux hvac-ign fuse 48 fuse 45 10a
Axle sw sig
Computer data lines system
Engine control module (ecm) (except hybrid: left front of engine compt, near fan shroud) (hybrid: left front of engine compt)
Front axle actuator (on front axle assembly)
G102 g103 (on front of right cylinder head)
G201 (upper left corner of dash)
Gmlan bus +
Gmlan bus -
Gnd
Ground distribution system
Hot w/ run/crnk relay energized
Ign
Instrument panel cluster (ipc)
J105
J130 (6.0l (vin g)
J220 (w/ steering pnk
Logic
Pnk
Ser data
Tan
Trans ign 1 fuse 19 fuse 13 10a
Transfer case shift control switch (on top left of transfer case)
Underhood fuse block (left side of engine compt)
Wheel heater)
X110
X2 n4 pnk
X5 g4

6.6L VIN 8

6.6L VIN 8, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(in engine harness, 5 cm from engine control module connector breakout)
(in instrument panel harness, in transfer case shift control module connector breakout)
(in pto jumper harness) j140
(in steering column harness)
(lower left side of dash) transfer case shift control module
(on front of right cylinder head) g103
(right front side of engine) glow plug control module (gpcm)
12v ref
A red
A/t manual shift switch
Acc volt
Acc wakeup srl data
Automatic transmission
Automatic transmission shift lever
Body control module (bcm) (lower left side of dash)
Computer data lines system
Data bus (+)
Data bus (-)
Fld press sw sig a
Fld press sw sig c
G201 (upper left corner of dash)
Gmlan data bus (-)
Gmlan serial data bus +
Gmlan serial data bus -
Gnd
Ign
J104
J106
J125
J143
J216
J230
Low ref
Main pcs
Nca
Pc sol vlv hi ctrl
Pc sol vlv low ctrl
Pcs1
Pcs1 sig
Pcs2
Pnk
Power take off (pto) module (outside of right front chassis frame)
Red
Replicated tos sig
Ss1
Ss2
Ss2 vlv ctrl
Ss3
Ssc vlv ctrl
Tan
Tap up/ tap down sw sig
Tcc pcs
Tft sensor sig
Tow/ haul sw sig
Tow/ haul switch
Tr sw sig b
Tr sw sig c
Tr sw sig p
Transmission control module (left front of engine compt, near fan shroud)
Vlv ctrl
Vss high sig
Vss sig low
W/ 2 speed transfer case
W/ electronic steering control
W/o 2 speed transfer case
X1 pnk
X108
X124
X175
X3 tan

6.6L VIN 8, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of engine compt, near fan shroud) engine control module (ecm)
(left side of transmission) automatic transmission turbine speed sensor
(lower left side of dash) left i/p junction block
(rear of transmission) vehicle speed sensor (vss)
(upper left corner of dash) g201
2 speed case) j130
A4 pnk
A7 x109
Accy wakeup srl data
Actuator sply volt
Automatic transmission
Automatic transmission fluid pressure (tfp) manual valve position switch
Automatic transmission internal mode switch (ims)
Aux hvac- ign fuse 45 10a
Batt +
Computer data lines system
Data bus (+)
Data bus (-)
Exterior lights system
Fld press sw sig 4
Fld press sw sig b
G103 (on front of right cylinder head)
G4 x5
Gmlan data bus (+)
Gnd
Ground distribution system
Hot at all times
Hot w/ run/crnk relay energized
Ign
Ign 1 volt
Instrument panel cluster (ipc)
J106
J144
J220 (w/ steering wheel heater)
Logic
Main press sol ctrl
Mil ctrl
Mil ind
Misc ign fuse 40 10a
P/n
Park/neutral sig
Pnk
Pnk a3
Power distribution
Range sw sig a
Stop lamp switch (top of brake pedal assembly)
System
Tan
Tan e
Tcc brake sig
Tcc pcs low ctrl
Tcm-batt fuse 7 15a
Tft sensor
Tos sig
Tow/ haul ind
Trans/ign1 fuse 13 15a
Transmission control module (left front of engine compt, near fan shroud)
Turbine speed sw sig
Underhood fuse block (left side of engine compt)
X175
X205

6.6L VIN 8, PTO Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, PTO Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(in pto jumper harness) j129
(in pto jumper harness) j139
(on front of right cylinder head) g103
5-volt ref
5-volt reference
Battery positive voltage
Computer data lines system
Engine control module (ecm) (left front of engine compt, near fan shroud)
Engine shut off sig
Engine start sw sig
Exp/pto fuse 44 15a
Exterior lights system
G103 (on front of right cylinder head)
Gnd
Hi spd gmlan serial data (+)
Hi spd gmlan serial data (-)
Hi spd serial data +
Hi spd serial data -
Hot at all times
Hot w/ run/crnk relay energized
Interior lights system
J106
J127
J133 (in engine chassis harness)
J138 (in pto jumper harness)
J141
J176
J280
Left i/p junction block (lower left side of dash)
Low ref
Low reference
Misc ign fuse 40 10a
Mode select a
Mode select b
Mode select c
Off
Pnk
Power take off (pto) relay
Power take off (pto) switch
Power take off module (pto) (outside of right front chassis frame)
Pto engage sig
Pto engine shutdown sig
Pto relay coil ctrl
Pto remote sw set sig
Pto rly engage sig
Pto sw indicator ctrl
Remote mode enable sig
Remote mode pps
Remote start arming sig
Res +
Seo b1 fuse 49 15a
Serial data enable
Set +
Shutdown signal
Tan
Tcc brake signal
Torque limit request sig
Underhood fuse block (left side of engine compt)
X123
X124

6.6L VIN 8, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Cab & Chassis Sierra HD 2012 3500:

(diesel)
(gas)
(lower left side of dash) left i/p junction block
2 hi ind ctrl
2-hi ind
4 hi ind ctrl
4 lo ind ctrl
4-hi ind
4-lo ind
4wd ind
5 volt ref
8v sply
Accy wakeup srl data
Aux hvac-ign fuse 48 fuse 45 10a
Axle actr ctrl
Axle sw sig
B12
Batt +
Body control module (bcm) (lower left side of dash)
C10
Computer data lines system
Diesel
Dirtn sig
Front axle actuator (0n front axle assembly)
G102 (on lower left front of engine)
G103 (on front of right cylinder head)
G201 (upper left corner of dash)
G4 pnk
Gas
Gmlan bus +
Gmlan bus -
Gnd
Hot at all times
Hot w/ run/crnk relay energized
Ign
Ign 1 volt
Incrmt encoder sig
Instrument panel cluster (ipc)
Interior lights system
J103 (6.0l (vin g)
J105
J220 (w/ steering wheel heater)
Left i/p junction block (lower left side of dash)
Lo ref
Logic
Low ref
Misc ign fuse 43 fuse 40 10a
Mtr ctrl a
Mtr ctrl b
Neutral ind
Neutral ind ctrl
Pnk
Power distribution system
Pulse sig
Right i/p junction block (in right end of dash)
Ser data
Shift motor
Sw sig
Tan
Trans ig1 fuse 19 fuse 13 15a
Transfer case encoder motor (on transfer case)
Transfer case shift control module (lower left side of dash)
Transfer case shift control switch (on top left of transfer case)
Trec fuse 67 fuse 62 30a
Underhood fuse block (left side of engine compt)
Wiper/washer system
X1 a3 pnk
X109
X110

6.6L VIN 8, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN 8, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Cab & Chassis Sierra HD 2012 3500:

(4.3l)
(4.8l, 5.3l, 6.ol & 6.2l)
(6.6l)
(gas) (diesel)
(lower left side of dash) left i/p junction block
(on lower left front of engine)
(top left rear of engine) g107
4.3l
4.8l, 5.3l, 6.0l (vin j) & 6.2l
4wd ind
4wd low sig
6.0l (vin g)
6.6l
Aux hvac-ign fuse 48 fuse 45 10a
Axle sw sig
Computer data lines system
Engine control module (ecm) (except hybrid: left front of engine compt, near fan shroud) (hybrid: left front of engine compt)
Front axle actuator (on front axle assembly)
G102 g103 (on front of right cylinder head)
G201 (upper left corner of dash)
Gmlan bus +
Gmlan bus -
Gnd
Ground distribution system
Hot w/ run/crnk relay energized
Ign
Instrument panel cluster (ipc)
J105
J130 (6.0l (vin g)
J220 (w/ steering pnk
Logic
Pnk
Ser data
Tan
Trans ign 1 fuse 19 fuse 13 10a
Transfer case shift control switch (on top left of transfer case)
Underhood fuse block (left side of engine compt)
Wheel heater)
X110
X2 n4 pnk
X5 g4

6.6L VIN L

6.6L VIN L, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN L, A/T Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(in engine harness, 5 cm from engine control module connector breakout)
(in instrument panel harness, in transfer case shift control module connector breakout)
(in pto jumper harness) j140
(in steering column harness)
(lower left side of dash) transfer case shift control module
(on front of right cylinder head) g103
(right front side of engine) glow plug control module (gpcm)
12v ref
A red
A/t manual shift switch
Acc volt
Acc wakeup srl data
Automatic transmission
Automatic transmission shift lever
Body control module (bcm) (lower left side of dash)
Computer data lines system
Data bus (+)
Data bus (-)
Fld press sw sig a
Fld press sw sig c
G201 (upper left corner of dash)
Gmlan data bus (-)
Gmlan serial data bus +
Gmlan serial data bus -
Gnd
Ign
J104
J106
J125
J143
J216
J230
Low ref
Main pcs
Nca
Pc sol vlv hi ctrl
Pc sol vlv low ctrl
Pcs1
Pcs1 sig
Pcs2
Pnk
Power take off (pto) module (outside of right front chassis frame)
Red
Replicated tos sig
Ss1
Ss2
Ss2 vlv ctrl
Ss3
Ssc vlv ctrl
Tan
Tap up/ tap down sw sig
Tcc pcs
Tft sensor sig
Tow/ haul sw sig
Tow/ haul switch
Tr sw sig b
Tr sw sig c
Tr sw sig p
Transmission control module (left front of engine compt, near fan shroud)
Vlv ctrl
Vss high sig
Vss sig low
W/ 2 speed transfer case
W/ electronic steering control
W/o 2 speed transfer case
X1 pnk
X108
X124
X175
X3 tan

6.6L VIN L, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN L, A/T Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(left front of engine compt, near fan shroud) engine control module (ecm)
(left side of transmission) automatic transmission turbine speed sensor
(lower left side of dash) left i/p junction block
(rear of transmission) vehicle speed sensor (vss)
(upper left corner of dash) g201
2 speed case) j130
A4 pnk
A7 x109
Accy wakeup srl data
Actuator sply volt
Automatic transmission
Automatic transmission fluid pressure (tfp) manual valve position switch
Automatic transmission internal mode switch (ims)
Aux hvac- ign fuse 45 10a
Batt +
Computer data lines system
Data bus (+)
Data bus (-)
Exterior lights system
Fld press sw sig 4
Fld press sw sig b
G103 (on front of right cylinder head)
G4 x5
Gmlan data bus (+)
Gnd
Ground distribution system
Hot at all times
Hot w/ run/crnk relay energized
Ign
Ign 1 volt
Instrument panel cluster (ipc)
J106
J144
J220 (w/ steering wheel heater)
Logic
Main press sol ctrl
Mil ctrl
Mil ind
Misc ign fuse 40 10a
P/n
Park/neutral sig
Pnk
Pnk a3
Power distribution
Range sw sig a
Stop lamp switch (top of brake pedal assembly)
System
Tan
Tan e
Tcc brake sig
Tcc pcs low ctrl
Tcm-batt fuse 7 15a
Tft sensor
Tos sig
Tow/ haul ind
Trans/ign1 fuse 13 15a
Transmission control module (left front of engine compt, near fan shroud)
Turbine speed sw sig
Underhood fuse block (left side of engine compt)
X175
X205

6.6L VIN L, PTO Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for 6.6L VIN L, PTO Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(in pto jumper harness) j129
(in pto jumper harness) j139
(on front of right cylinder head) g103
5-volt ref
5-volt reference
Battery positive voltage
Computer data lines system
Engine control module (ecm) (left front of engine compt, near fan shroud)
Engine shut off sig
Engine start sw sig
Exp/pto fuse 44 15a
Exterior lights system
G103 (on front of right cylinder head)
Gnd
Hi spd gmlan serial data (+)
Hi spd gmlan serial data (-)
Hi spd serial data +
Hi spd serial data -
Hot at all times
Hot w/ run/crnk relay energized
Interior lights system
J106
J127
J133 (in engine chassis harness)
J138 (in pto jumper harness)
J141
J176
J280
Left i/p junction block (lower left side of dash)
Low ref
Low reference
Misc ign fuse 40 10a
Mode select a
Mode select b
Mode select c
Off
Pnk
Power take off (pto) relay
Power take off (pto) switch
Power take off module (pto) (outside of right front chassis frame)
Pto engage sig
Pto engine shutdown sig
Pto relay coil ctrl
Pto remote sw set sig
Pto rly engage sig
Pto sw indicator ctrl
Remote mode enable sig
Remote mode pps
Remote start arming sig
Res +
Seo b1 fuse 49 15a
Serial data enable
Set +
Shutdown signal
Tan
Tcc brake signal
Torque limit request sig
Underhood fuse block (left side of engine compt)
X123
X124

6.6L VIN L, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for 6.6L VIN L, Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Cab & Chassis Sierra HD 2012 3500:

(diesel)
(gas)
(lower left side of dash) left i/p junction block
2 hi ind ctrl
2-hi ind
4 hi ind ctrl
4 lo ind ctrl
4-hi ind
4-lo ind
4wd ind
5 volt ref
8v sply
Accy wakeup srl data
Aux hvac-ign fuse 48 fuse 45 10a
Axle actr ctrl
Axle sw sig
B12
Batt +
Body control module (bcm) (lower left side of dash)
C10
Computer data lines system
Diesel
Dirtn sig
Front axle actuator (0n front axle assembly)
G102 (on lower left front of engine)
G103 (on front of right cylinder head)
G201 (upper left corner of dash)
G4 pnk
Gas
Gmlan bus +
Gmlan bus -
Gnd
Hot at all times
Hot w/ run/crnk relay energized
Ign
Ign 1 volt
Incrmt encoder sig
Instrument panel cluster (ipc)
Interior lights system
J103 (6.0l (vin g)
J105
J220 (w/ steering wheel heater)
Left i/p junction block (lower left side of dash)
Lo ref
Logic
Low ref
Misc ign fuse 43 fuse 40 10a
Mtr ctrl a
Mtr ctrl b
Neutral ind
Neutral ind ctrl
Pnk
Power distribution system
Pulse sig
Right i/p junction block (in right end of dash)
Ser data
Shift motor
Sw sig
Tan
Trans ig1 fuse 19 fuse 13 15a
Transfer case encoder motor (on transfer case)
Transfer case shift control module (lower left side of dash)
Transfer case shift control switch (on top left of transfer case)
Trec fuse 67 fuse 62 30a
Underhood fuse block (left side of engine compt)
Wiper/washer system
X1 a3 pnk
X109
X110

6.6L VIN L, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Cab & Chassis Sierra HD 2012 3500

Získejte přístup ke všem schématům zapojení automobilu

List of elements for 6.6L VIN L, Transfer Case Wiring Diagram, 2-Speed Manual for GMC Cab & Chassis Sierra HD 2012 3500:

(4.3l)
(4.8l, 5.3l, 6.ol & 6.2l)
(6.6l)
(gas) (diesel)
(lower left side of dash) left i/p junction block
(on lower left front of engine)
(top left rear of engine) g107
4.3l
4.8l, 5.3l, 6.0l (vin j) & 6.2l
4wd ind
4wd low sig
6.0l (vin g)
6.6l
Aux hvac-ign fuse 48 fuse 45 10a
Axle sw sig
Computer data lines system
Engine control module (ecm) (except hybrid: left front of engine compt, near fan shroud) (hybrid: left front of engine compt)
Front axle actuator (on front axle assembly)
G102 g103 (on front of right cylinder head)
G201 (upper left corner of dash)
Gmlan bus +
Gmlan bus -
Gnd
Ground distribution system
Hot w/ run/crnk relay energized
Ign
Instrument panel cluster (ipc)
J105
J130 (6.0l (vin g)
J220 (w/ steering pnk
Logic
Pnk
Ser data
Tan
Trans ign 1 fuse 19 fuse 13 10a
Transfer case shift control switch (on top left of transfer case)
Underhood fuse block (left side of engine compt)
Wheel heater)
X110
X2 n4 pnk
X5 g4

WARNING SYSTEMS

Warning Systems Wiring Diagram, with Bucket Seats & Power Mirrors (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Warning Systems Wiring Diagram, with Bucket Seats & Power Mirrors (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(upper left corner of dash)
(upper left corner of dash) g201
3a5
Auto
B5 x109
Battery (+)
Bcm fuse 15 10a
Body control module (bcm) (lower left side of dash)
Computer data lines system
Crew cab
Ctsy fuse 5 15a
Dim fuse 7 15a
Driver door latch assembly (rear of driver's door)
Drv dr key sw sig
Except hybrid
G103 (on front of right cylinder head)
G201
G201 (upper left corner of dash)
G303 (on lower left "b" pillar)
G304 (on lower right "b" pillar)
Ground
Head
Headlamp & panel dimmer switch
Headlp sw headlp off sig
Headlp sw headlp on sig
Headlp sw park lamps sig
Hi spd gmlan bus (+)
Hi spd gmlan bus (-)
Hot at all times
Hybrid
I/p fuse block (left side of dash)
Ign
Is lps fuse 17 20a
J201
J502 (w/ power windows)
J602 (w/ power door lock control)
Left front door ajar sw
Left rear door ajar sw
Left rear door latch assembly (rear of left rear door)
Lo spd gmlan serial data
Lt stop trn fuse 6 15a
Off
Park
Park brake sw signal
Passenger door latch assembly (rear of passenger's door)
Power
Right front door ajar sw
Right i/p junction block (in right end of dash)
Right rear door ajar sw
Right rear door latch assembly (rear of right rear door)
Rt stop trn fuse 8 15a
Stop lamps fuse 12 15a
System distribution
Tan
W/ electronic door lock control
W/o electronic door lock control
X202
X501
X700
X800

Warning Systems Wiring Diagram, with Bucket Seats & Power Mirrors (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Warning Systems Wiring Diagram, with Bucket Seats & Power Mirrors (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(in instrument panel harness, 19 cm after radio connector breakout) (w/ luxury edition) j204
(lower left side of dash) left i/p junction block
(on brake master cylinder reservoir) brake fluid level switch
(w/ front bench seat)
(w/ front bench seat) x202
(w/o luxury edition)
Acc
B13
Brake ind
Chime module (center of dash, behind radio)
Diesel
Dlis fuse 35 fuse 32 2a
Driver information center (dic) display
Driver seat belt buckle
Driver seat belt switch
G201 (upper left corner of dash)
G301 (below left side of passenger's seat)
Gasoline
Hot at all times
Ignition switch
Inflatable restraint sensing & diagnostic module (sdm) (under driver's seat)
Instrument panel cluster (ipc)
Ipc fuse 46 fuse 43 10a
J212
J305 (w/ 10 series) (in driver seat harness, 5 cm from x303)
Key-in ignition switch
Left i/p junction block (lower left side of dash)
Left seat belt sw x2
Lo spd data
Lo spd gmlan serial data x1
Logic
Low engine oil pressure ind
Low ref
Low tire pressure ind
Nca
Off
Park brake switch (on park brake pedal assembly)
Pnk
Power distribution system
Radio
Rdo fuse 42 fuse 39 15a
Run
Seat belt ind
Serial data
Sound systems
Splice pack jx221 (in i/p harness, behind left side of dash)
Splice pack jx339 (under front passenger's seat)
Start
Underhood fuse block (left side of engine compt)
W/ radio provisions
W/o radio provisions
X12
X202
X212
X303

Warning Systems Wiring Diagram, without Bucket Seats & Power Mirrors (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Warning Systems Wiring Diagram, without Bucket Seats & Power Mirrors (1 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(upper left corner of dash)
3b1
Auto
Battery (+)
Bcm fuse 15 10a
Body control module (bcm) (lower left side of dash)
Computer data lines system
Crew cab
Ctsy fuse 5 15a
Dim fuse 7 15a
Driver door latch assembly (rear of driver's door)
Driver door lock/ window switch
G103 (on front of right cylinder head)
G201
G201 (upper left corner of dash)
G303 (on lower left "b" pillar)
G304 (on lower right "b" pillar)
Ground
Head
Headlamp & panel dimmer switch
Headlp sw headlp off sig
Headlp sw headlp on sig
Headlp sw park lamps sig
Hi spd gmlan bus (+)
Hi spd gmlan bus (-)
Hot at all times
I/p fuse block (left side
Ign
Is lps fuse 17 10a
J201
Left rear door ajar sw
Left rear door latch assembly (rear of left rear door)
Lf ajar sig
Lf open sig
Lo spd data
Lo spd gmlan serial data
Low ref
Lt stop trn fuse 6 15a
M x800
Of dash)
Off
Park
Park brake sw signal
Passenger door latch assembly (rear of passenger's door)
Passenger door lock/ window switch
Power distribution system
Rf ajar sig
Right i/p junction block (in right end of dash)
Right rear door ajar sw
Right rear door latch assembly (rear of right rear door)
Rt stop trn fuse 8 15a
Stop lamps fuse 12 15a
Tan
X109 b5
X700
X700 m
X800

Warning Systems Wiring Diagram, without Bucket Seats & Power Mirrors (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Warning Systems Wiring Diagram, without Bucket Seats & Power Mirrors (2 of 2) for GMC Cab & Chassis Sierra HD 2012 3500:

(in instrument panel harness,19 cm after radio connector breakout) (w/ luxury edition) j204
(on brake master cylinder reservoir) brake fluid level switch
(w/ front bench seat) x202
(w/o luxury edition)
A15
Acc
B13
Brake ind
Chime module (center of dash, behind radio)
Diesel
Dlis fuse 35 fuse 32 2a
Driver information center (dic) display
Driver seat belt buckle
Driver seat belt switch
G201 (upper left corner of dash)
G301 (below left side of passenger's seat)
Gasoline
Hot at all times
Ignition switch
Inflatable restraint sensing & diagnostic module (sdm) (under driver's seat)
Instrument panel cluster (ipc)
Ipc fuse 46 fuse 43 10a
J212
J305 (w/ 10 series) (in driver seat harness, 5 cm from x303)
Key-in ignition switch
Left i/p junction block (lower left side of dash)
Left seat belt sw x2
Lo spd data
Lo spd gmlan serial data x1
Logic
Low engine oil pressure ind
Low ref
Low tire pressure ind
Nca
Off
Park brake switch (on park brake pedal assembly)
Pnk
Power distribution system
Radio
Rdo fuse 42 fuse 39 15a
Run
Seat belt ind
Serial data
Sound systems
Splice pack jx221 (in i/p harness, behind left side of dash)
Splice pack jx339 (under front passenger's seat)
Start
Underhood fuse block (left side of engine compt)
W/ radio provisions
W/o radio provisions
X1 k2
X12
X212
X303

WIPER/WASHER

Wiper/Washer Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500

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List of elements for Wiper/Washer Wiring Diagram for GMC Cab & Chassis Sierra HD 2012 3500:

(not used)
(on front of right cylinder head) (6.6l) g103
(top left rear of engine) (4.3l) g107
Bat pos volt
Body control module (bcm) (lower left side of dash)
Computer data lines system
Driver information center (dic)
Front washer diode
Frt wash fuse 7 (except 6.6l) fuse 5 (6.6l) 15a
Frt wash pcb relay
Frt wpr fuse 36 (except 6.6l) wpr fuse 33 (6.6l) 25a
G100 (6.6l: left front corner of engine compt) (except 6.6l: on lower left radiator support)
G101 (6.6l: right front corner of engine compt) (except 6.6l: on lower right radiator support)
G102 (4.8l, 5.3l, 6.0l & 6.2l) (on lower left front of engine)
G201 (upper
Ground distribution system
Hot at all times
I/p fuse block (left side of dash)
Instrument panel cluster (ipc)
Int
J100
J101
J105
J205
Left corner of dash)
Left i/p junction block (lower left x1 side of dash)
Logic
Low ref
Low washer fluid ind ctrl
Mist
Mtr park sw sig
Off
Pnk
Rt stop trn fuse 8 15a
Serial data
Tan
Turn signal multi-function switch (on left side of steering column)
Underhood fuse block (left side of engine compt)
Washer rly ctrl
Washer sw sig
Washer switch
Windshield washer fluid level switch (bottom of washer fluid reservoir)
Windshield washer fluid pump (bottom of washer fluid reservoir)
Windshield wiper motor (under left side of windshield cowl)
Winshield wiper sw hi sig
Wiper control pcb relay
Wiper high speed diode
Wiper low speed diode
Wiper speed pcb relay
Wiper sw hi sig
Wiper sw lo sig
Wiper switch
Wndshld wiper sw sig 2
X103
X201