All Wiring Diagrams for Chevrolet Cab & Chassis Silverado HD 2008 3500

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Automatic A/C Wiring Diagram (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (except 6.6l: in engine harness, 23 cm from map sensor breakout)
• (in i/p harness, 13 cm from radio connector breakout) j203
• (left side of headliner) front inside air temperature sensor
• (lower left side of dash) left i/p junction block
• (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
• (under upper left side of dash) upper left air temperature sensor
• (under upper right side of dash) upper right air temperature sensor
• 5v ref
• A/c ind
• A/c low pressure switch (on right side of a/c accumulator)
• 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
• Engine coolant level switch (6.6l) (on bottom of surge tank)
• Fan dn
• Fan up
• Fresh air
• Frnt dfg
• Frt def
• Fsh air
• 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)
• G201 (upper left corner of dash)
• Gmlan l
• Ground
• Hvac control module
• Ign 3
• J106
• J206 (in i/p harness, 14.5 cm from x200 breakout)
• J328 (in headliner harness, 5 cm from front inside air temperature sensor breakout)
• L air tmp
• Left sunload sensor
• Left temp control
• Lf sunld
• Logic
• Low ref
• Lw prss
• 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 sunload sensor
• Right temp control
• Tan

Automatic A/C Wiring Diagram (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Automatic A/C Wiring Diagram (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 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
• 4a1
• 4a2
• 4a3
• 4a4
• 4a5
• 4a6
• 4b2
• 4b3
• 4b5
• 4b6
• 6.6l except 6.6l & 4.3l 4.3l
• A/c cmprsr fuse 17 (except 6.6l) fuse 18 (6.6l) 10a
• A/c comp- ressor clutch relay
• A4 x5
• E x4
• Engine coolant temperature (ect) sensor (4.3l: left side of dash) (except 4.3l & 6.6l: on top of engine) (6.6l: top front center of engine)
• Except 6.6l & 6.0l (vin k)
• G102 (except 4.3l & 6.6l) (on lower left front of engine)
• Hot at all times
• Hvac batt fuse 39 10a
• Hvac blwr fuse 70 40a
• Hvac ign fuse 57 (except 6.6l) fuse 55 (6.6l) 10a
• J105
• Pnk
• Red
• Right i/p junction block (in right end of dash)
• Run/ crank relay
• Tan
• Under- hood fuse block (left side of engine compt)

Automatic A/C Wiring Diagram (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Automatic A/C Wiring Diagram (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (left side of hvac module) lower left air temperature sensor
• (lower left of hvac module) lower right air temperature sensor
• (near compressor, on a/c high pressure hose) a/c refrigerant pressure sensor
• (on lower right radiator support) g101
• 87a
• Cooling fan diode 1
• Cooling fan diode 2
• Except 6.6l & 6.0l (vin k)
• Fan cntrl relay
• Fan hi relay 1
• Fan lo relay
• Fan-1 fuse 60 40a
• Fan-2 fuse 62 40a
• G100 (on lower left radiator support)
• Hot at all times
• J100
• J101
• Left air temperature actuator (bottom left of hvac module)
• Left engine cooling fan (left front of engine compt)
• Logic
• 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 engine cooling fan (right front of engine compt)
• Tan
• Under- hood fuse block (left side of engine compt)

Compressor Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Compressor Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (4.3l: top left rear of engine) (6.6l: on front of right cylinder head) (except 4.3l & 6.6l: on lower left front of engine)
• (on front of a/c compressor) a/c compressor clutch
• 4.3l
• 6.6l
• A/c cmprsr fuse 17 (except 6.6l) fuse 16 (6.6l) 10a
• A/c cmprsr relay
• A/c ind
• A/c low pressure switch (on right side of a/c accumulator)
• A/c on
• A/c refrigerant pressure sensor (near compressor, on a/c high pressure hose)
• Automatic a/c
• B(+)
• Computer data lines system
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l & 6.6l
• G103 (except 4.3l) (on front of right cylinder head)
• G106 (4.3l) (right rear of engine)
• G107 (4.3l) g103 (6.6l) g102 (except 4.3l & 6.6l)
• G200 (on right front corner of hvac module)
• Gmlan l
• Ground
• Hot at all times
• Hvac batt fuse 39 (except 6.6l) fuse 36 (6.6l) 10a
• Hvac control module
• J105
• J106
• J203
• Logic
• Lw prss
• Manual a/c
• Tan
• Under- hood fuse block (left side of engine compt)

Manual A/C Wiring Diagram (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Manual A/C Wiring Diagram (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 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
• (except 6.6l: in engine harness, 23 cm from map sensor breakout)
• (left front of engine compt, near fan shroud) engine control module (ecm)
• (lower right side of hvac module) blower motor
• (lower right side of hvac module) blower motor control module
• 4.3l
• 5v ref
• 6.6l
• A/c cmprsr fuse 17 (except 6.6l) fuse 18 (6.6l) 10a
• A/c comp- ressor clutch relay
• A/c ind
• A/c low pressure switch (on right side of a/c accumulator)
• A/c on
• 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)
• Engine coolant temperature (ect) sensor (4.3l: left side of dash) (except 4.3l & 6.6l: on top of engine) (6.6l: top front center of engine)
• Except 4.3l & 6.6l
• Except 6.6l 6.0l (vin k)
• Fresh air
• Frh air
• G102 (except 6.6l & 4.3l)
• G103 (except 6.6l) (on front of right cylinder head)
• G106 (4.3l) (right rear of engine)
• G200 (on right front corner of hvac module)
• G201 (upper left corner of dash)
• Gmlan l
• Ground
• 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 system
• J105
• J106
• J203
• Led cntl
• Left i/p junction block (lower left side of dash)
• Logic
• Low ref
• Lw prss
• Mode ctrl
• Mode switch
• Mtr spd ctrl
• Pnk
• R air tmp
• Rear defog
• Rear dfg
• Recir
• Recir ctrl
• Recirc
• Red
• Rer def
• Run/ crank relay
• Tan
• Temperature control switch
• Under- hood fuse block (left side of engine compt)

Manual A/C Wiring Diagram (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Manual A/C Wiring Diagram (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 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)
• (near compressor, on a/c high pressure hose) a/c refrigerant pressure sensor
• (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 6.6l & 6.0l (vin k)
• Fan cntrl relay
• Fan lo relay
• Fan-1 fuse 60 40a
• Fan-2 fuse 62 40a
• G100 (on lower left rediator support)
• G101 (on lower right radiator support)
• G102 (except 6.6l & 4.3l)
• Hi fan relay
• Hot at all times
• J100
• J101
• J105
• Left engine cooling fan (left front of engine compt)
• Pnk
• Pwr/ trn relay
• Red
• Right engine cooling fan (right front of engine compt)
• Right i/p junction block (in right end of dash)
• Tan
• Under- hood fuse block (left side of engine compt)

Manual A/C Wiring Diagram (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Manual A/C Wiring Diagram (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (not used)
• Air temperature actuator (top middle of hvac module)
• Logic
• Mode actuator (left end of hvac module)
• Recirculation actuator (front a/c) (top right side of hvac module)
• Tan

ANTI-LOCK BRAKES

Anti-Lock Brake Wiring Diagram, with JL4 (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Anti-Lock Brake Wiring Diagram, with JL4 (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (lower left side of dash) left i/p junction block
• (w/ low tire pressure, rear parking assist & remote entry) j302
• 12v
• 5v ref
• 6.6l
• Abs pump m
• Abs-1 fuse 61 fuse 56 40a
• Abs-2 fuse 9 fuse 8 25a
• Agle sns a
• Agle sns b
• Agle sns c
• Angle sns
• Brk sns
• Can h
• Can l
• Comm data
• Computer data lines system
• Electronic brake control module (ebcm) (on left side of frame assembly)
• Except 6.6l
• G201 (upper left corner of dash)
• G300 (below driver's door, on body mount)
• G302 (below right side of passenger's seat)
• Gmlan +
• Gmlan -
• Gnd
• Hot at all times
• J300
• Left front wheel speed sensor (wss) (on left front steering knuckle)
• Left rear wheel speed sensor (wss) (on left rear brake backing plate)
• Lf whl sns
• Logic
• Low ref
• Lr whl sns
• Motor
• Nca
• Pwr brk h
• Pwr brk l
• Radio
• Red
• Rf whl sns
• Right rear wheel speed sensor (wss) (on right rear brake backing plate)
• Rr whl sns
• Tan
• Underhood fuse block (left side of engine compt)
• Veh spd sig
• W/ luxury edition
• W/o luxury edition
• Yaw rate & lateral acceleration sensor (under center console trim panel)

Anti-Lock Brake Wiring Diagram, with JL4 (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Anti-Lock Brake Wiring Diagram, with JL4 (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (31 series: on left frame rail) (20/30 series: left rear frame rail) trailer brake controller module (tbcm)
• (in instrument panel harness) (w/ power take off) j222
• (outside of right front chassis frame) power take off (pto) module
• (under rear of vehicle) fuel system control module (fscm)
• 12v
• 5.3l (vin 3) & 6.0l (vin k)
• Abs indicator
• Body control module (bcm) (lower left side of dash)
• Brake booster vacuum sensor (left rear of engine compt)
• Brake fluid level switch (on master cylinder)
• Brake indicator
• Brk sig
• Comm data
• Computer data lines system
• Except 4.3l, 5.3l (vin o),
• G201 (upper left corner of dash)
• Gmlan +
• Gmlan -
• I/p multi-function switch
• Instrument panel cluster (ipc)
• Interior lights system
• J201
• J338
• Logic
• Nca
• Park brake switch (on park brake pedal assembly)
• Power brake booster (left rear of engine compt)
• Prk brk sw
• Right front wheel speed sensor (wss) (on right front steering knuckle)
• Steering angle sensor (on steering column)
• Stop lamp switch (top of brake pedal assembly)
• Tan
• Traction sw

Anti-Lock Brake Wiring Diagram, without JL4 for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Anti-Lock Brake Wiring Diagram, without JL4 for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in instrument panel harness) (w/ power take off) j222
• (lower left side of dash) left i/p junction block
• (on master cylinder)
• 12v
• 6.0l
• 6.6l
• Abs indicator
• Abs pump motor
• Abs-1 fuse 61 fuse 56 40a
• Body control module (bcm) (lower left side of dash)
• Brake fluid level switch
• Brake indicator
• Brake master cylinder pressure sensor (w/ trailer brake) (left rear of engine compt)
• Brk sig
• Brk sns
• Comm data
• Computer data lines system
• Electronic brake control module (ebcm) (on left side of frame assembly)
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 6.0l (vin k)
• Except 6.6l
• Fuel system control module (fscm) (under rear of vehicle)
• G201 (upper left corner of dash)
• G300 (below driver's door, on body mount)
• Gmlan +
• Gmlan -
• Gnd
• Heavy duty abs fuse 59 fuse 55 60a
• Hot at all times
• Instrument panel cluster (ipc)
• Interior lights system
• J300
• J338 (except 6.0l (vin k))
• Left front wheel speed sensor (wss) (on left front steering knuckle)
• Lf whl sns
• Logic
• Low ref
• Nca
• Park brake switch (on park brake pedal assembly)
• Power take off (pto) module (outside of right front chassis frame)
• Prk brk sw
• Radio
• Red
• Rf whl sns
• Right front wheel speed sensor (wss) (on right front steering knuckle)
• Stop lamp switch (top of brake pedal assembly)
• Tan
• Trailer brake controller module (tbcm) (w/ trailer brake) (20/30 series: left rear frame rail) (31 series: on left frame rail)
• Underhood fuse block (left side of engine compt)
• Veh spd sig
• W/ luxury edition
• W/o luxury edition

Trailer ABS Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Trailer ABS Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (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) g401
• 6.6l
• Comm data
• Computer data lines system
• Except 6.6l
• Exterior lights system
• Gmlan +
• Gmlan -
• Grd
• Hot at all times
• Hot w/ run/crnk relay energized
• Ign 1
• Interior lights system
• Itbc fuse 6 fuse 19 15a
• J411
• Low ref
• Misc ign fuse 43 fuse 40 10a
• Pnk
• 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 switch
• Trailer brake controller module (tbcm) (20/30 series: left rear frame rail) (31 series: on left frame rail)
• 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/ heavy duty trailer harness

ANTI-THEFT

Anti-theft Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Anti-theft Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in spo theft harness)
• (w/ keyless entry, active brake control)
• 3b2
• 4a7
• 6.6l
• Acc v
• Ant
• Bcm fuse 10a
• Body control module (bcm) (lower left side of dash)
• Computer data lines system
• Ddm fuse 15a
• Dim fuse 15a
• Dlis fuse 35 fuse 32 2a
• Driver door lock/ window switch
• Driver's information center
• Dsm fuse 10a
• Except 6.6l
• Exterior lights system
• G101 (on lower right radiator support)
• 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
• Hdlp rly
• Headlights system
• Hood ajar switch (w/ remote keyless entry) (part of hood latch assembly)
• Horn rly
• Horns system
• Hot at all times
• I/p fuse block (left side of dash)
• Instrument panel cluster (ipc)
• Interior lights system
• Intrus sig
• J101
• J213
• J227
• J230
• Keyless entry antenna
• Left i/p junction block (lower left x5 side of dash)
• Lf ajar sw
• Logic
• Lr ajar sw
• Nca
• Passenger door lock/ window switch
• Pdm fuse 15a
• Power distribution system
• Prl lp rly
• Remote control door lock receiver (rcdlr) (top rear of passenger compt)
• Rf ajar sw
• Right i/p junction block (in right x1 end of dash)
• Rr ajar sw
• Sec ind
• Security ind
• Security indicator lamp
• Seo b1 fuse 52 fuse 49 15a
• Sns sig
• Sw sig
• Tan
• Theft deterrent control module (on right side of steering column)
• Underhood fuse block (left side of engine compt)
• Vehicle inclination sensor
• Vehicle shock sensor
• Volt

BODY CONTROL MODULES

Body Control Modules Wiring Diagram (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Body Control Modules Wiring Diagram (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (not used)
• 12 volt ref
• 5 volt ref
• Acc
• Accessory volt
• Ambient lt sens sig
• Anti-lock brakes system
• Battery +
• Body control module (lower left side of dash)
• Courtesy lamps ctrl
• Cruise control system
• Cruise ctrl sw sig
• Dim fuse 15a
• Exterior lights system
• Fuse block (i/p) (left side of dash)
• Hazrd sw left turn sig
• Hazrd sw right turn sig
• Hazrd 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 system
• Hot at all times
• I/p lamps dim ctrl
• Ig iii volt
• Ign i volt
• Ignition switch
• Interior lamp defeat sw sig
• Interior lights system
• J213
• Low ref
• Off
• Pnk
• Power distribution system
• Run
• Shift interlock system
• Sound systems
• Sound, cruise control & transmission 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 Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Body Control Modules Wiring Diagram (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (gas) (diesel)
• 12v ref
• Accessory wakeup serial data
• Anti-lock brakes system
• Anti-theft system
• Battery +
• Bcm fuse 10a
• Body control module (lower left side of dash)
• Brake sw sig
• Computer data lines system
• Cruise control system
• Cruise ctrl ind dim sig
• Ctsy fuse 15a
• Drl relay ctrl
• Exterior lights system
• Fog lamp relay ctrl
• Front fog lamp sw sig/enable
• Fuse block (i/p) (left side of dash)
• 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 lamp dimmer sw sig
• Indicator dim ctrl
• Instrument cluster system
• Interior lights system
• Ipc fuse 46 fuse 43 10a
• Is lps fuse 10a
• Junction block (left i/p) (lower left side of dash)
• Led backlight dim ctrl
• Lo spd serial data
• Lt stop trn fuse 15a
• Lt trlr turn sig lamp
• Outside moisture sens sig 1
• Outside moisture sens sig 2
• Power distribution system
• Rt stop trn fuse 15a
• Rt trlr turn sig lamp
• Run/crank relay ctrl
• Security ind ctrl
• Serial data comm enable
• Stop lamps fuse 15a
• Tan
• Underhood fuse block (left side of engine compt)
• Washer relay ctrl
• Wiper motor park sw sig
• Wiper/washer system

Body Control Modules Wiring Diagram (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Body Control Modules Wiring Diagram (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 12 volt ref
• Anti-theft system
• Backup lamp relay ctrl
• Body control module (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
• 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 iii voltage
• Interior lights system
• Intrusion sens alarm on sig
• Intrusion sens armed sig
• Lf door open sw sig
• Low ref
• Lr door ajar sw sig
• Lt door ajar sw sig
• Non drv door open sw sig
• Out of park sig
• Park brake sw sig
• Park brake switch (on park brake pedal assembly)
• 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
• Wiper sw sig 2
• Wiper/washer & transmission systems
• Wiper/washer system

COMPUTER DATA LINES

Computer Data Lines Wiring Diagram (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Computer Data Lines Wiring Diagram (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in body harness, below passenger seat) splice pack jx339
• (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)
• (upfitter provisional)
• 2 or more
• 3b1
• Audio amplifier (if equipped) (under rear of center console)
• Body control module (bcm) (lower left side of dash)
• 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 (if equipped)
• G200 (on right front corner of hvac module)
• G201 (upper left corner of dash)
• Ground distribution system
• 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)
• Inflatable restraint vehicle rollover sensor (if equipped) (below center console)
• Instrument panel cluster (ipc)
• J200
• Left i/p junction block (lower left side of dash)
• Lo speed serial data
• Lo-speed serial data
• Low speed gmlan serial data
• Ltr fuse 53 (except 6.6l) fuse 50 (6.6l) 20a
• Memory seat module (w/ front individual non bucket seat) (under front of driver's seat)
• Of w/ onstar, digital radio & rear seat & earphone jacks radio control
• Passenger door lock/window switch (if equipped)
• 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 the i/p harness, behind left side of dash)
• Tan
• Theft deterrent control module (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/ luxury edition
• W/ onstar
• W/ radio provisions
• W/ rear seat & earphone jacks radio control
• W/o luxury edition
• W/o radio provisions

Computer Data Lines Wiring Diagram (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Computer Data Lines Wiring Diagram (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (w/ trailer brake & except 4.3l, 5.3l (vin 0), 6.6l, 6.0l (vin k) & 5.3l (vin 3)) j338
• 4.3l
• 5.3l (vin 0), 6.0l (vin k) & w/ trailer brake
• 5.3l (vin 0), 6.0l (vin k) & w/o trailer brake
• 6.0l (vin y), 4.3l, 4.8l & 5.3l
• 6.2l except 6.2l & 6.6l
• 6.6l
• 6.6l 6.2l & 6.0l (vin k)
• Accessory wakeup serial data
• Body control module (bcm) (lower left side of dash)
• Data link resistor
• Electronic brake control module (ebcm) (on left side of frame assembly)
• Engine control module (ecm) (left front of engine compartment, near fan shroud)
• Except 4.3l & 6.6l
• Except 4.3l, 6.6l, 5.3l (vin 0), 6.0l (vin k) & 5.3l (vin 3)
• Except 6.6l
• Fuel system control module (fscm) (except 4.3l, 6.6l, 5.3l (vin 0), 6.0l (vin k) & 5.3l (vin 3)) (under rear of vehicle)
• Glow plug control module (gpcm) (6.6l) (top left rear of engine)
• Hb01
• Hb04
• Hb05
• Hb06
• Hb20
• Hi spd gmlan serial data +
• Hi spd gmlan serial data -
• High speed gmlan serial data bus +
• High speed gmlan serial data bus -
• J104 (in engine harness, 5 cm from engine control module connector breakout)
• J207 (w/ auto & electronic 4x4) (in instrument panel harness, in transfer case shift control module connector breakout)
• J222 (w/ pto) (in instrument panel harness)
• Left i/p junction block (lower left side of dash)
• Power take off (pto) module (outside of right front chassis frame)
• Serial data comm enable
• Tan
• Terminator
• Trailer brake controller module (tbcm) (w/ trailer brake) (20/30 series: left rear frame rail) (31 series: on left frame rail)
• Transfer case shift control module (w/ auto & electronic 4x4) (lower left side of dash)
• Transmission control module (tcm) (left front of engine compartment, near fan shroud)
• Vehicle communication interface module (vcim) (behind center of dash)
• W/ auto & electronic 4x4
• W/ hydraulic brakes
• W/ onstar
• W/ pto
• W/ trailer brake
• W/o auto & electronic 4x4
• W/o hydraulic brakes
• W/o onstar
• W/o pto
• W/o trailer brake

COOLING FAN

Cooling Fan Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Cooling Fan Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (near compressor, on a/c high pressure hose) a/c refrigerant pressure sensor
• (on lower right radiator support) g101
• 4.3l
• 6.6l
• 87a
• Automatic a/c
• Colnt lvl
• Cool/ fan relay 1
• Cooling fan diode 1
• Cooling fan diode 2
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Engine coolant level switch (6.6l) (on bottom of surge tank)
• Engine coolant temperature (ect) sensor (4.3l: left side of dash) (except 4.3l & 6.6l: on top of engine) (6.6l: top front center of engine)
• Except 6.6l & 4.3l
• Except 6.6l & 6.0l (vin k)
• Fan cntrl relay
• Fan lo relay
• Fan-1 fuse 60 40a
• Fan-2 fuse 62 40a
• G100 (on lower left radiator support)
• G103 (on front of right cylinder head)
• Hot at all times
• Hvac control module
• J100
• J101
• J106
• Left engine cooling fan (left front of engine compt)
• Logic
• Manual a/c
• Pwr/ trn relay
• Right engine cooling fan (right front of engine compt)
• Tan
• Under- hood fuse block (left side of engine compt)

CRUISE CONTROL

6.0L VIN K

6.0L VIN K, Cruise Control Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.0L VIN K, Cruise Control Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (or pnk)
• 12v
• 5v ref
• 5v ref 2
• Accelerator pedal position (app) sensor (above accelerator pedal)
• App sen 1 sig
• App sen 2 sig
• Automatic transmission
• Batt +
• Body control module (bcm) (lower left side of dash)
• Brake sw sig
• 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 15a
• Ecm batt fuse 12 10a
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 6.0l 4wd
• Exterior lights system
• G103 (on front of right cylinder head)
• G201 (upper left corner of dash)
• Ground
• Hi spd gmlan ser data bus+
• Hi spd gmlan ser data bus-
• Hot at all times
• Hot w/ run/crank relay energized
• I/p fuse block (left side of dash)
• Inflatable restraint steering wheel module coil (behind steering wheel)
• Input speed sensor (iss)
• Input speed sensor (iss) signal
• Instrument panel cluster (ipc)
• Interior lights system
• Ipc fuse 46 10a
• J106
• J127
• J216 (in the 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
• Misc ign fuse 43 10a
• Output speed sensor (oss)
• Output speed sensor (oss) signal
• Pnk
• Red
• Res+
• Ser data
• Ser data bus+
• Ser data bus-
• Set-
• Sound systems
• Steering wheel cntrl sup volt
• Stop lamp sw sig
• Stop lamp switch (top of brake pedal assembly)
• 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)

6.6L VIN 6

6.6L VIN 6, Cruise Control Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.6L VIN 6, Cruise Control Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (left front of engine compt, near fan shroud)
• (or pnk)
• 12v
• 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
• Batt +
• Body control module (bcm) (lower left side of dash)
• Brake sw sig
• Cancel
• Column harness)
• Computer data lines system
• Cruise control ind dimming sig
• Cruise control switch signal
• Cruise ind
• Cruise switch
• Dim fuse 15a
• Ecm batt fuse 11 10a
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Exterior lights system
• G103 (on front of right cylinder head)
• G103 (on front right cylinder head)
• G201 (upper left corner of dash)
• Gmlan data bus+
• Gmlan data bus-
• Ground
• Hi spd gmlan ser data bus+
• Hi spd gmlan ser data bus-
• Hot at all times
• Hot w/ run/crank relay energized
• I/p fuse block (left side of dash)
• Inflatable restraint steering wheel module coil (behind steering wheel)
• Instrument panel cluster (ipc)
• Intake air valve
• Interior lights system
• Ipc fuse 43 10a
• J106
• J216 (in the 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
• Misc ign fuse 40 10a
• Motor ctrl 1
• Motor ctrl 2
• Pnk
• Res+
• Ser data
• Ser data bus+
• Ser data bus-
• Set-
• Sound systems
• Steering wheel cntrl sup volt
• Stop lamp sw sig
• Stop lamp switch (top of brake pedal assembly)
• 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

DEFOGGERS

Heated Mirrors Wiring Diagram, with AN3/DL3 for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Heated Mirrors Wiring Diagram, with AN3/DL3 for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 3b2
• 4a7
• B4 x4
• Battery
• Computer data lines system
• Ddm fuse 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
• 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 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 AN3/DL3 for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Heated Mirrors Wiring Diagram, without AN3/DL3 for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (6.6l) (except 6.6l & 4.3l) (4.3l)
• (except 6.6l) (6.6l)
• A7 x4
• 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
• Rear defog relay
• Rear defogger ind
• Rear defogger switch
• Underhood fuse block (left side of engine compt)

Rear Defogger Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Rear Defogger Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (6.6l) (except 6.6l & 4.3l) (4.3l)
• (except 6.6l) (6.6l)
• (except crew cab) (crew cab)
• A x1
• A x2
• A7 x4
• Automatic a/c
• B5 x4
• 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 compartment)
• Hot at all times
• Hvac control module
• J105
• Logic
• Manual a/c
• N5 x2
• Rear defog fuse 52 fuse 50 30a
• Rear defog relay
• Rear defogger ind
• Rear defogger switch
• Rear window defogger grid
• Underhood fuse block (left side of engine compt)

ENGINE PERFORMANCE

6.0L VIN K

6.0L VIN K, Engine Performance Wiring Diagram (1 of 4) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.0L VIN K, Engine Performance Wiring Diagram (1 of 4) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (below driver's door, on body mount)
• (below driver's door, on body mount) g300
• (in chassis harness)
• (on fuel pump & sender assembly)
• (on lower left front of engine) g102
• (or 821)
• 4wd lo sig
• 5v ref(ac)
• 5v ref1
• 5v ref2
• A/c cl ctl
• A/c pres sig
• Acc ser data
• Air conditioning system
• Anti-lock brakes system cooling fans system
• App1 sig
• App2 sig
• Axl sw sig
• Brk sw sig
• Cfan hi ctl
• Cfan lo ctl
• Computer data lines system
• Cooling fans system
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Evap vent
• Evaporative emissions (evap) canister vent solenoid valve (under rear of vehicle)
• Exterior lights system
• Ftp sig
• Fuel ctl
• Fuel ctl-sec
• Fuel lvl-pri
• Fuel lvl-sec
• Fuel pmp relay
• Fuel pump fuse 20 20a
• Fuel tank pressure (ftp) sensor
• G103 (on front of right cylinder head)
• G300
• Gmlan (+)
• Gmlan (-)
• Gnd
• 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)
• Ho2s hi b1s2
• Ho2s hi b2s2
• Ho2s ht b1s2
• Ho2s ht b2s2
• Ho2s lo b1s2
• Ho2s lo b2s2
• Hot at all times
• Iat sig
• Ig1
• J106
• J300
• J331
• Lo ref
• Maf sig
• Mil ctl
• Nca
• P/n sig
• Pnk
• Primary fuel pump & sender assembly (inside fuel tank)
• Pwtn rly ctl
• Rear fuel pump & sender assembly (6.0l (vin k)) (in rear fuel tank)
• Secondary fuel pump (fp) relay (6.0l (vin k)) (left side of engine compt)
• Starting/ charging system
• Strt rly ctl
• Tan
• Transmissions system
• Underhood fuse block (left side of engine compt)
• Vss
• Vss high sig
• Vss lo sig

6.0L VIN K, Engine Performance Wiring Diagram (2 of 4) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.0L VIN K, Engine Performance Wiring Diagram (2 of 4) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (front of engine) (6.0l (vin k)) camshaft actuator solenoid
• (not used)
• 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
• Fuel injectors (top of left cylinder bank)
• Fuel injectors (top of right cylinder bank)
• G103 (on front of right cylinder head)
• Hot at all times
• Hot in run or start
• Iat
• Inj-a fuse 24 20a
• Inj-b fuse 13 20a
• J106
• Maf
• Mass air flow (maf)/intake air temperature (iat) sensor (right front of engine compt)
• O2-b snsr fuse 8 10a
• Pnk
• Pnk a
• Pnk b
• Pwr/ trn relay
• Tan
• Tan b
• Tan e
• Tcm- batt fuse 14 15a
• To o2-a snsr fuse 18 (diagram 3 of 4)
• Underhood fuse block (left side of engine compt)

6.0L VIN K, Engine Performance Wiring Diagram (3 of 4) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.0L VIN K, Engine Performance Wiring Diagram (3 of 4) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (lower left side of dash) left i/p junction block
• (on front of right cylinder head)
• (on right side of engine oil pan) engine oil level switch
• (upper left corner of dash)
• (w/ steering wheel heater) j220
• Aux hvac- ign fuse 48 1oa
• Brake fluid level switch (on master cylinder)
• Camshaft position (cmp) sensor (front of engine, above crank pulley)
• Computer data lines system
• Crankshaft position (ckp) sensor (right rear of engine)
• Engine coolant temperature (ect) sensor (on top of engine)
• Engine oil pressure (eop) sensor (top rear of engine)
• Engine oil pressure ind
• From inj-b fuse 13 (diagram 2 of 4)
• G103
• G201
• 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)
• Hot at all times
• Hot in run or start
• Ign
• Instrument panel cluster (ipc)
• Ipc fuse 46 10a
• J106
• Knock sensor 1 (lower left side of engine)
• Knock sensor 2 (lower right side of engine)
• Lo bus
• Logic
• Malfunction indicator lamp
• Manifold absolute pressure (map) sensor (on top of intake manifold)
• Nca
• O2-a snsr fuse 18 10a
• Pnk
• Tan
• Underhood fuse block (left side of engine compt)

6.0L VIN K, Engine Performance Wiring Diagram (4 of 4) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.0L VIN K, Engine Performance Wiring Diagram (4 of 4) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (below intake manifold)
• (in ignition coil jumper harness, 5 cm from x111 breakout)
• (on intake manifold) evaporative emission (evap) canister purge solenoid valve
• (upper left side of engine)
• (upper right side of engine)
• 5v ref1
• 5v ref2
• A pnk
• Cam sol ctl
• Chg ind sig
• Ckp sig
• Cmp sig
• Ctrl
• Cyl off ctl 1
• Cyl off ctl 2
• Cyl off ctl 3
• Cyl off ctl 4
• Cylinder shutoff solenoid 1, cyl 1
• Cylinder shutoff solenoid 2, cyl 4
• Cylinder shutoff solenoid 3, cyl 6
• Cylinder shutoff solenoid 4, cyl 7
• E pnk
• Ect sig
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Eop sig
• G102 (on lower left front of engine)
• Gen fdc sig
• Gnd
• Ho2s hi b1s1
• Ho2s hi b2s1
• Ho2s ht b1s1
• Ho2s ht b2s1
• Ho2s lo b1s1
• Ho2s lo b2s1
• Ic 1 ctl
• Ic 2 ctl
• Ic 3 ctl
• Ic 4 ctl
• Ic 5 ctl
• Ic 6 ctl
• Ic 7 ctl
• Ic 8 ctl
• Ign
• Ignition coils
• Inj 1 ctl
• Inj 2 ctl
• Inj 3 ctl
• Inj 4 ctl
• Inj 5 ctl
• Inj 6 ctl
• Inj 7 ctl
• Inj 8 ctl
• J107
• J108
• J109
• J110
• J111
• J112
• Ks1 sig
• Ks2 sig
• Lo ref
• Map sig
• Nca
• Nca nca
• Oil lvl sw sig
• Pnk
• Pnk d
• Red c
• Ref lo
• Sol ctrl
• Spark plug
• Spark spark plug plug
• Starting/ charging system
• Starting/charging system
• Tac mot ctl 1
• Tac mot ctl 2
• Tan
• Throttle body
• Tp sens1 sig
• Tp sens2 sig
• Valve lifter oil manifold (vlom) assembly

6.6L VIN 6

6.6L VIN 6, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.6L VIN 6, Engine Performance Wiring Diagram (1 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (not used) x107
• (on frame crossmember) dpf differential pressure sensor
• (on left side of engine) turbocharger vane position sensor
• (on top of intake manifold) manifold absolute pressure (map) sensor
• 4wd low sig
• 5v ref 1
• 5v ref 2
• 5v ref 3
• A tan
• App sensor 2 sig
• Bare
• Cmp sensor sig
• Dpf sensor sig
• Ect sensor sig
• Egr temp sens 1
• Egr val pos sig
• Egt sensor 2 sig
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Engine coolant temperature (ect) sensor
• Engine oil pressure (eop) sensor
• Exhaust gas recirculation (egr) temperature sensor 1
• Exhaust gas temperature (egt) sensor 1 (in exhaust, upstream of catalytic converter)
• Fuel press
• Fuel press volt
• Fuel pressure regulator
• G106 (lower left side of engine)
• Iat sensor 2 sig
• Iat sensor sig
• Inj + group 1
• Inj + group 2
• Inj + group 3
• Inj + group 4
• Inj 3
• Inj 4
• Inj 5
• Inj 6
• Inj 7
• Inj 8
• Intake air temperature (iat) sensor 2 (on top center of engine)
• J175
• Low ref
• Maf sensor sig
• Map sensor sig
• Nca
• Oil level sw sig
• Oil press sig
• Pnk
• Starter enable
• Starting/charging system
• Tan
• Transmissions system
• Tur vane pos sig
• Turbo vane pos

6.6L VIN 6, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.6L VIN 6, Engine Performance Wiring Diagram (2 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (top left rear of engine) glow plug control module (gpcm)
• Acc ser data
• Bus +
• Bus -
• Computer data lines system
• Engine oil level switch (on left side of engine oil pan)
• G105
• G106 (lower left side of engine)
• Glow plug 1 +
• Glow plug 2 +
• Glow plug 3 +
• Glow plug 4 +
• Glow plug 5 +
• Glow plug 6 +
• Glow plug 7 +
• Glow plug 8 +
• Glow plugs
• Gnd
• Hb01
• Hb02
• Hb03
• Hb04
• Hb05
• Hb06
• Hb11
• Hb12
• Hb13
• Hb14
• Hb15
• Hb16
• Hb17
• Hb18
• Hb20
• Iah comm 1
• Iah comm 2
• Iah current sig
• Iah fdbk sig
• Iah temp sig
• Iah volt sig
• Iat
• Ic180
• Ic181
• Ic182
• Ic183
• Ic184
• Ic185
• Ign 1 +
• Intake air heater (iah) module (left front of engine)
• J171
• J175
• Maf
• Mass air flow (maf)/intake air temperature (iat) sensor (front of engine)
• Nca
• Pnk
• Red
• Tan
• Water in fuel sensor (right side of engine)

6.6L VIN 6, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.6L VIN 6, Engine Performance Wiring Diagram (3 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (above accelerator pedal)
• (below driver's door, on body mount) g300
• (between fuel tanks, on left frame rail) (31 series w/ auxiliary fuel tank) fuel pump
• (in exhaust, downstream of catalytic converter) exhaust gas temperature (egt) sensor 2
• (not used) x107
• (on top right side of engine) exhaust gas recirculation (egr) valve
• (top rear of engine) turbocharger vane position control solenoid valve
• Accelerator pedal position sensor
• Axle sw sig
• B tan
• C tan
• Camshaft position sensor (front of engine, above crank pulley)
• Ckp sensor sig
• Crankshaft position sensor (front of engine, right of crank pulley)
• Egt sensor sig
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Exterior lights system
• Ffp switch sig
• Frp sensor sig
• G105
• Hot at all times
• Ign 1 +
• Inj 1
• Inj 2
• Intake air valve
• J171
• Low ref
• Mega fuse 125a
• Mega fuse 175a
• Nca
• Pnk
• Power distribution system
• Pto eng off sig
• Red
• Sens 2 sply vol
• Tan
• Tcc brake sig
• Tp sensor sig
• Transmissions system
• Underhood fuse holder (right side of firewall)
• Water in fuel

6.6L VIN 6, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.6L VIN 6, Engine Performance Wiring Diagram (4 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in engine harness)
• (right side of engine, near fuel filter) fuel heater
• 31 series w/ auxiliary fuel tank
• Dsl ecm fuse 12 25a
• Ecm- ign fuse 53 15a
• Ecm-batt fuse 11 10a
• Ecm/ throt cont fuse 17 15a
• Eng fuse 3 15a
• Fuel htr fuse 6 15a
• Fuel injector 1 (top of right cylinder bank)
• Fuel injector 2 (top of left cylinder bank)
• Fuel injector 3 (top of right cylinder bank)
• Fuel injector 4 (top of left cylinder bank)
• Fuel injector 5 (top of right cylinder bank)
• Fuel injector 6 (top of left cylinder bank)
• Fuel injector 7 (top of right cylinder bank)
• Fuel injector 8 (top of left cylinder bank)
• Fuel pmp relay
• Fuel pump fuse 2a
• G103 (on front of right cylinder head)
• G105
• Hot at all times
• Hot in run or start
• J105
• J129 (in pto jumper harness)
• J133
• J134
• J135
• J136
• J137
• Nca
• Pnk
• Power take off (pto) module (outside of right front chassis frame)
• Pwr/
• Tan
• Trn relay
• Under- hood fuse block (left side of engine compt)

6.6L VIN 6, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.6L VIN 6, Engine Performance Wiring Diagram (5 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in chassis harness) (w/o auxiliary fuel tank 31 series) j331
• 5v ref-2
• 5v ref-3
• A/c compress
• A/c refrig sig
• Acc wake ser data
• Air conditioning system
• Anti-lock brakes system
• App sensor 1 sig
• Charge ind ctl
• Computer data lines system
• Data bus +
• Data bus -
• Egr motor high
• Egr motor low
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Engine oil pressure gauge
• Exhaust gas recirculation (egr) temperature sensor 2
• Fuel gauge
• Fuel level sensor primary (in front fuel tank)
• Fuel level sensor secondary (w/o auxiliary fuel tank 31 series) (in rear fuel tank)
• Fuel level sensor sig
• Fuel level sig sec
• Fuel pump
• Fuel rail pressure sensor
• Fuel rail temperature (frt) sensor (top left rear of engine)
• Fuel temp sig
• G103 (on front of right cylinder head)
• G106 (lower left side of engine)
• Generator sig
• Gnd
• Ign 1 +
• Instrument panel cluster
• J106
• J175
• Logic
• Low ref
• Malfunction indicator lamp
• Mil control
• Motor ctrl 1
• Motor ctrl 2
• Nca
• Park/neutral sig
• Pnk
• Powertrain rly ctrl
• Red
• Starting/ charging system
• Tachometer
• Tan
• Transmissions system
• Vehicle speed sig
• Vss sig
• Wait to start
• Wait to start ind

EXTERIOR LIGHTS

Backup Lamps Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Backup Lamps Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (6.6l)
• (6.6l) (on front of right cylinder head)
• (except 6.6l)
• (in camper harness, 109.5 cm from x414 breakout) j415
• (not used)
• Backup alarm
• Bck/up
• Bck/up lamp pcb relay
• Body control module (bcm) (lower left side of dash)
• G103 g107 (4.3l) (top left rear of engine)
• G300 (below driver's door, on body mount)
• G401 (on left rear body mount)
• Grd
• Hot at all times
• If equipped
• Inside rearview mirror (isrvm)
• J105
• J410
• Left backup lamp
• Left i/p junction block (lower left side of dash)
• Mjr
• Nca
• Rear lamps junction box (inside of left rear frame rail)
• Right backup lamp
• Trailer tow circuit
• Trlr bck/up fuse 10 fuse 9 10a
• Underhood fuse block (left side of engine compt)
• Veh bck/up fuse 15 fuse 14 10a
• W/ compass
• X10
• X11

Exterior Lamps Wiring Diagram (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Exterior Lamps Wiring Diagram (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (4 speed a/t) x1
• (4.3l) x1
• (6 speed a/t) x1
• (6.6l) x1
• (except x1 4.3l & 6.6l)
• (in right end of dash) right i/p junction block
• (left side of dash) i/p fuse block
• 3a4
• Auto
• Body control module (bcm) (lower left side of dash)
• Chevrolet
• Chmsl rly
• Driver door lock/window switch
• Driver outside rearview mirror
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• G101 (on lower right radiator support)
• G200 (on right front corner of hvac module)
• G201 (upper left corner of dash)
• Gmc
• Hazard switch
• Head
• Headlamp & panel dimmer switch
• Hz sw
• Hz sw l trn
• Hz sw r trn
• J101
• J103
• J201
• J230
• J603
• Left turn
• Lf trn sig
• Lower right front park/ turn signal lamp
• Lr stp/trn
• Maj
• Min
• Nca
• Off
• Park
• Park lp sig
• Passenger door lock/window switch
• Passenger outside rearview mirror
• Power take off (pto) module (if equipped) (outside of right front chassis frame)
• Prk lp rly
• Rf trn sig
• Right front marker lamp
• Right turn
• Rn/crk rly
• Rr stp/trn
• Tan
• Tcc brk
• Transmission control module (tcm) (4 speed a/t: left front of engine compt, near fan shroud)
• Turn signal/ multi-function switch (on left side of steering column)
• Underhood fuse block (left side of engine compt)
• Upper right front park/ turn signal lamp
• W/ folding mirrors
• W/ manual folding
• W/ power folding
• W/o folding mirrors

Exterior Lamps Wiring Diagram (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Exterior Lamps Wiring Diagram (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (not used)
• (on lower left front of engine) (except 4.3l & 6.6l) g102
• 6.6l
• Anti-lock brakes system
• Center high mounted stop lamp (chmsl)
• Chevrolet
• Chmsl fuse 49 fuse 46 15a
• Chmsl pcb relay
• Computer data lines system
• Except 6.6l
• G100 (on lower left radiator support)
• G103 (6.6l) (on front of right cylinder head)
• G107 (4.3l) (top left rear of engine)
• G200 (on right front corner of hvac module)
• Gmc
• Hot at all times
• Instrument panel cluster (ipc)
• Ipc fuse 46 fuse 43 10a
• J100
• J102
• J105
• Left front marker lamp
• Left i/p junction block (lower x1 left side of dash)
• Left turn ind
• Logic
• Lower left front park/ turn signal lamp
• Lt prk fuse 26 fuse 23 15a
• Maj
• Min
• Misc ign fuse 43 fuse 40 10a
• Park lamp relay
• Pnk
• Right turn ind
• Rt prk fuse 27 fuse 24 15a
• Run/ crank relay
• Serial data
• Stop lamp switch (top of brake pedal assembly)
• Trailer tow circuit
• Trlr prk fuse 25 fuse 22 15a
• Underhood fuse block (left side of engine compt)
• Upper left front park/ turn signal lamp

Exterior Lamps Wiring Diagram (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Exterior Lamps Wiring Diagram (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in right end of dash) right i/p junction block
• (inside of left rear frame rail) rear lamps junction box
• 2b2
• Breakout) j418
• Breakout) j419
• Chevrolet
• G200 (on right front corner of hvac module)
• G300 (below driver's door, on body mount)
• G401 (on left rear body mount)
• Gmc
• Grd
• If equipped
• J337
• Left backup lamp
• Left front rear fender clearance lamp
• Left license lamp
• Left rear marker lamp
• Left rear most fender clearance lamp
• Left roof marker lamp
• Lower left tail/ stop & turn signal lamp
• Lower right tail/ stop & turn signal lamp
• Middle roof marker lamp
• Mjr
• Mnr
• Nca
• Rear lamps junction box (inside of left rear frame rail)
• Rear lamps junction box (inside of left rear frame rail) x1
• Right backup lamp
• Right front rear fender clea- rance lamp
• Right license lamp
• Right rear marker lamp
• Right rear most fender clea- rance lamp
• Right roof marker lamp
• Tailgate marker lamp
• Upper left tail/ stop & turn signal lamp
• Upper right tail/ stop & turn signal lamp
• W/ dual wheel

Trailer Tow Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Trailer Tow Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 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 system
• 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 decibals electrical backup alarm
• W/ trailer brake control
• W/o trailer brake control

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Ground Distribution Wiring Diagram (1 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (4.3l)
• (auto 4x4, electronic 4x4, manual 4x4 & 2 speed transfer case manual shift control) front drive axle actuator
• (electronic 4x4 & auto 4x4) transfer case shift control module
• (except 4.3l)
• (if equipped) left front fog lamp
• (if equipped) right front fog lamp
• (if equipped) right horn
• (left side of engine compt) underhood fuse block
• (manual 4x4) transfer case shift control switch
• 4.8l, 5.3l, 6.0l & 6.2l
• A/c compressor clutch
• Auxiliary battery relay (if equipped)
• Auxiliary battery run relay (if equipped)
• Bck/up lamp pcb relay
• Chevrolet
• Chmsl pcb relay
• Cooling fan diode 1 (10 series)
• Diesel
• Diesel w/ auxiluary battery
• Except 6.0l (vin k)
• Fan cntrl relay
• Front washer diode
• Fuel pump relay
• G100 (on lower left radiator support)
• G101 (on lower right radiator support)
• G102
• G104 (front of left cylinder head)
• G107 (top left rear (on lower left front of engine)
• G108 (on left side of firewall)
• Gas
• Gmc
• Hood ajar switch
• Ignition coil/ module 1
• Ignition coil/ module 2
• Ignition coil/ module 3
• Ignition coil/ module 4
• Ignition coil/ module 5
• Ignition coil/ module 6
• Ignition coil/ module 7
• Ignition coil/ module 8
• J100 (in forward lamp harness, 7 cm from ambient air temperature sensor breakout)
• J101 (in forward lamp harness)
• J103 (in right headlamp harness)
• J105 (in engine harness, 12 cm from ect sensor breakout)
• J108 (in ignition coil jumper harness, between ignition coils 5 & 7)
• J111 (in ignition coil jumper harness, between ignition coils 4 & 2)
• J141 (in pto jumper harness)
• J145 (in auxiliary battery harness)
• Left battery
• Left front 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
• Of engine)
• Rear defog relay
• Right battery
• Right engine cooling fan
• Right front marker lamp
• Right high beam headlamp
• Right low beam headlamp
• Run/ crnk relay
• Strtr relay
• To g103 (diagram 2 of 6)
• Underhood fuse block (left side of engine compt)
• Upper left park/turn signal lamp
• Upper right park/turn signal lamp
• W/ dual battery
• W/ keyless entry & left cargo restraint & 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
• X2 n5
• X3 d

Ground Distribution Wiring Diagram (2 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Ground Distribution Wiring Diagram (2 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (4 speed a/t)
• (4.3l)
• (4.8l/5.3l/6.0l)
• (6 speed a/t)
• (diesel)
• (if equipped)
• (if equipped) garage door opener (gdo)
• (if equipped) inflatable restraint passenger airbag on/off indicator
• (if equipped) power take off (pto) module
• (if equipped) windshield washer solvent heater
• 4 spd
• 4.3l
• 4.8l, 5.3l, 6.0l & 6.2l
• A/c low pressure switch
• A/t
• Allision transmission 6 speed a/t
• Automatic a/c
• Bare
• Body control module (bcm)
• Camshaft position (cmp) sensor shield
• Crankshaft position (ckp) sensor shield
• Diesel
• Engine control module (ecm)
• Engine coolant level switch
• Engine oil level (eol) switch
• Except 4.3l
• From j105 (diagram 1 of 6)
• From right battery (diagram 1 of 6)
• Fuel heater
• Fuel pressure regulator shield
• Fuel rail pressure (frp) sensor shield
• Fuse a 30a
• Fuse c 30a
• G103 (on front of right cylinder head)
• G105 (diesel)
• G106 (diesel) (lower left side of engine)
• G106 (right rear of engine)
• G110 (left side of firewall)
• G111 (on left side of firewall)
• G403
• Glow plug control module (gpcm)
• Harness)
• Ignition control module (icm)
• J106 (in engine harness, 23 cm from map sensor breakout)
• J175 (in engine red
• 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
• Overhead console courtesy/ reading lamps
• Park/ neutral position switch
• Red
• Relay a
• Relay b
• Roof beacon relay
• Roof beacon switch
• Sliding rear window switch
• To j328 (diagram 3 of 6)
• Transmission control module (tcm)
• W/ body builder emergency lamp
• W/ roof mounted lamp
• W/ wrecker emergency lamp, body builder emergency lamp & roof mounted lamp
• Water in fuel sensor

Ground Distribution Wiring Diagram (3 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Ground Distribution Wiring Diagram (3 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (auto 4x4 & electronic 4x4) transfer case shift control switch
• (automatic a/c) inside air temperature sensor
• (if equipped) heated steering wheel
• (if equipped) heated steering wheel control module
• (if equipped) left sunshade
• (if equipped) windshield outside moisture sensor
• (in i/p harness, 13 cm from radio connector breakout) j203
• (in i/p harness, 14 cm from left i/p junction block breakout) j200
• (in steering wheel harness, 4 cm from inflatable restraint steering wheel module coil x2)
• (on right front corner of hvac module) g200
• 2b6
• 3a7
• 4a7
• Automatic a/c
• Automatic transmission shift lock control solenoid
• B x4
• 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
• Emergency lamp
• Emergency vehicle roof lamp relay or wrecker relay
• Extended cab/crew cab
• From j323 (diagram 2 of 6)
• Heater, accessory steering control & automatic cruise control
• Horn switch
• Hvac control module
• I/p 1 accessory power outlet
• I/p 2 accessory power outlet
• Inflatable restraint steering wheel module coil (behind steering wheel)
• Inside rearview mirror (isrvm)
• J214
• J215 (in steering column harness)
• J324 (in sunroof harness, 3 cm from sunroof switch breakout)
• J334 (in right "a" pillar harness)
• Left i/p junction block (lower left side of dash)
• Left roof marker lamp
• Left steering wheel control switch
• Manual a/c
• Middle roof marker lamp
• Nca
• Park enable pcb realy
• Passenger door lock/ window switch
• Passenger outside rear view mirror
• Passenger window switch
• Rear dome/ reading lamps
• Right i/p junction block (in right end of dash)
• Right roof marker lamp
• Right steering wheel control switch
• Right sunshade (if equipped)
• Sunroof module
• Sunroof switch
• Sunroof w/ roof lamp provision
• Sunroof w/ roof lamp provision w/o roof marker lamp
• W/ a/t & steering wheel heater
• W/ accessory steering control
• W/ comfort & decor level 3
• W/ luxury edition
• W/ manual folding mirror & heated mirror
• W/ non bucket front individual seat
• W/ outside temperature display & onstar
• W/ roof marker lamp
• W/ roof mounted lamp provisions
• W/ steering wheel
• W/ steering wheel heater & automatic cruise control
• W/ sunroof sliding
• W/o a/t & steering wheel heater
• W/o non bucket front individual seat
• W/o steering wheel
• Wheel harness)
• Wrecker emergency lamp
• X1 a
• X14
• X2 d1
• X2 k
• X276 b
• X277 b
• X6 b

Ground Distribution Wiring Diagram (4 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Ground Distribution Wiring Diagram (4 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (crew cab & w/ front individual seats) door lock/unlock pcb relay
• (if equipped) driver outside rearview mirror
• (if equipped) outside rearview mirror switch
• (if equipped) windshield washer solvent heater
• (in left front door harness) j502
• (not used) g1
• (w/o non backet individual seat, w/ power door lock control, heated mirror) lock pcb relay
• (w/o non backet individual seat, w/ power door lock control, heated mirror) unlock pcb relay
• 3a3
• 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 window switch
• Front door lock diode
• Front door unlock diode
• G201 (upper left corner of dash)
• Headlamp & panel dimming switch
• Hvac control module
• I/p fuse block (left side of dash)
• I/p multifunction switch
• Instrument panel cluster (ipc)
• J201 (in i/p harness, in headlamp & 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
• Rear door lock diode
• Rear door unlock diode
• Right i/p junction block (in right end of dash)
• Theft deterrent module
• Turn signal/ multifunction switch
• W/ non bucket front individual seat
• W/ power door lock control
• W/ power window
• W/ windshield heated nozzles, rear parking assist, active brake control & power adjustable pedals
• W/o non bucket front individual seat
• 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

Ground Distribution Wiring Diagram (5 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Ground Distribution Wiring Diagram (5 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (back-up alarm: in camper harness, 7 cm from back-up alarm breakout) (w/ champer, 5th wheel trailer: in camper harness, 232.5 cm from x414 breakout) j410
• (if equipped) back up alarm
• (if equipped) rear seat audio (rsa) control
• (not used)
• (premium performance enhanced audio) audio amplifier
• 4.3l, 5.3l (vin 0), & 5.3l (vin 3)
• 4.3l, 5.3l (vin 0), 6.0l (vin k) & 5.3l (vin 3)
• 6.0l (vin k)
• Chevrolet
• Chime module
• Diesel
• Diesel, w/ 31 series & w/o rear auxiliary fuel tank
• Digital radio receiver
• Electronic brake control module (ebcm)
• Front fuel pump & sender assembly
• Front system control module (fscm)
• Fuel pump
• G300 (below driver's door, on body mount)
• G301 (below left side of passenger's seat)
• Gas
• Gmc
• Grd
• Infrared transmitter
• J300 (in chassis harness, 15 cm from g300 breakout)
• J330 (in console harness, 12 cm from audio amplifier breakout)
• Left i/p junction block (lower left side of dash)
• Lower right tail/ stop & turn signal lamp
• Nca
• Radio
• Rear fuel pump & sender assembly
• Rear lamps junction block (inside of left rear frame rail)
• Right back up lamp
• Right rear marker lamp
• Secondary fuel pump relay
• To g401 (diagram 6 of 6)
• Trailer connector
• Upper right tail/ stop & turn signal lamp
• Vehicle communication interface module (vcim)
• Video display
• W/ active brake & vaccum power brake
• W/ camper, 5th wheel trailer
• W/ camper, 5th wheel trailer & back up alarm
• W/ dual front door mounted & 4 speaker system
• W/ hydraulic power brake
• W/ luxury edition
• W/ performance enhanced audio
• W/ radio provision
• W/ rear auxiliary fuel tank
• W/o camper, 5th wheel trailer & back up alarm
• W/o luxury edition
• W/o luxury edition & w/ rear seat entertainment package
• W/o performance enhanced audio
• W/o radio provision
• W/o rear auxiliary fuel tank
• W/o rear seat radio & luxury edition
• X1 a5
• X1 b
• X12
• X2 d

Ground Distribution Wiring Diagram (6 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Ground Distribution Wiring Diagram (6 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (if equipped) driver seat adjuster switch
• (if equipped) remote control door lock receiver (rcdlr)
• (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)
• (on left rear body mount) g401
• (rear parking assist) rear object sensor control module
• (w/ active brake control) yaw & lateral acceleration sensor
• Az3
• Center console accessory power outlet
• Center seat accessory power outlet
• Chevrolet
• Console compartment accessory power outlet
• Crew cab
• Crew cab/ extended cab w/ performance audio & front compartment console
• Except crew cab
• Except regular cab
• From j410 (diagram 5 of 6)
• 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)
• Gmc
• Grd
• Inflatable restraint passenger presence system (pps) module
• Inflatable restraint sensing & diagnostic module (sdm)
• Inflatable restraint vehicle rollover sensor
• J304
• J335 (in sliding rear window jumper harness)
• Left back up lamp
• Left front rear fender clearance lamp
• Left license lamp
• Left rear door latch
• Left rear marker lamp
• Left rear most fender clearance lamp
• Left rear window switch
• Lower left tail/ stop & turn signal lamp
• Memory seat module (msm)
• Nca
• Passenger seat adjuster switch
• Passenger seat lumbar switch
• Rear lamps junction block (inside of left rear frame rail)
• 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
• Tail/ stop & turn signal lamp
• Tailgate marker lamp
• Trailer brake control module
• Trailer brake control relay
• Upper left tail/ stop & turn signal lamp
• W/ abv/az3
• W/ child presence detector
• W/ head curtain air bag
• W/ keyless entry, active brake control
• W/ low tire pressure
• W/ non bucket front individual seat
• W/ rear defogger
• W/ rear dual wheel
• W/ rear parking assist, low tire pressure & remote entry
• W/ trailer brake control module
• W/o abv/az3
• W/o child presence detector
• W/o head curtain air bag
• W/o keyless entry, active brake control
• W/o rear defogger
• W/o rear parking assist, low tire pressure & remote entry
• W/o trailer brake control module
• X1 e
• X2 a

HEADLIGHTS

Headlights Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Headlights Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• Amb lght
• Ambient light sensor (manual a/c) ambient light/ sunload sensor assembly (automatic a/c) (top center of dash)
• Auto
• Automatic a/c
• Body control module (bcm) (lower left side of dash)
• Chevrolet
• Computer data lines system
• Diesel
• Drl 2 fuse 33 fuse 30 10a
• Drl fuse 31 fuse 28 10a
• Drl pcb relay
• Drl rly
• Flash to pass
• Flash to pass switch
• Fog lamp fuse 26 fuse 25 15a
• Fog lamp ind
• Fog lamp relay
• Fog lmp rly
• Fog lp sw
• Fog switch
• G100 (on lower left radiator support)
• G101 (on lower right radiator support)
• G201 (upper left corner of dash)
• Gas
• Gmc
• Gmlan serial data
• Hdlp dim sw sig
• Hdlp lo/hid relay
• Hdlp off
• Hdlp on
• Head
• Headlamp & panel dimmer switch
• Headlamp dimmer switch
• Hi beam ind
• 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
• Hot w/ run/ crank relay energized
• Instrument panel cluster (ipc)
• Ipc fuse 46 fuse 43 10a
• J100
• J101
• J201
• J230
• Left front fog lamp
• Left high beam headlamp
• Left i/p junction box (lower left side of dash)
• Left low beam headlamp
• Lo beam rly
• Lo hdlp lt fuse 12 20a
• Lo hdlp rt fuse 16 fuse 15 20a
• Logic
• Manual a/c
• Off
• Park
• Park brake switch (on park brake pedal assembly)
• Pk brake sig
• Prk lmp
• Right front fog lamp
• Right high beam headlamp
• Right low beam headlamp
• Turn signal/ multi-function switch
• Underhood fuse block (left side of engine compt)

HORN

Horn Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Horn Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (diesel)
• (gas)
• B x1
• Body control module (lower left side of dash)
• G100 (on lower left radiator support)
• G101 (on lower right radiator support)
• G200 (on right front corner of hvac module)
• Horn fuse 29 fuse 26 15a
• Horn pcb relay
• Horn relay control
• Horn switch
• Hot at all times
• Inflatable restraint steering wheel module coil (behind steering wheel)
• J x2
• J100
• J101
• Left horn (lower left front of vehicle)
• Right horn (lower right front of vehicle)
• Tan
• Underhood fuse block (left side of engine compt)
• W/ high note dual horn & comfort, decor level 3 convenience package
• X4 g1

INSTRUMENT CLUSTER

Instrument Cluster Wiring Diagram (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (on lower left front of engine) (except 4.3l & 6.6l) 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 master cylinder)
• Brake ind
• Brk fld sig
• Charge ind
• Computer data lines system
• Coolant temperature gauge
• Cruise ind
• Dic sw sig
• Driver information center (dic)
• Engine controls system
• Except 6.6l
• Fog lamp ind
• Fuel gauge
• G103 (6.6l) (on front of right cylinder head)
• G201 (upper left corner of dash)
• Gmlan serial
• Gnd
• High beam ind
• Hot at all times
• Ign
• Ign 1
• Instrument panel cluster
• Interior lights system
• Ipc fuse 46 fuse 43 10a
• J105
• J220 (w/ steering wheel heater)
• Led cntrl
• Left i/p junction block (lower left side of dash)
• Left turn ind
• Logic
• Low oil ind
• Low ref
• Low washer
• Malfunction ind (mil)
• Mil cntrl
• Odometer
• Oil gauge
• Park brake switch (on park brake pedal assembly)
• Pass off ind ctrl
• Pass on ind ctrl
• Pnk
• Pss seat belt
• Right turn ind
• Run/ crank 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
• Wait to start ind (6.6l)
• Wait to strt
• Wiper/washer system

Instrument Cluster Wiring Diagram (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (6.6l)
• (except 6.6l)
• (in chassis harness) j331
• (in front fuel tank) primary fuel level sensor
• (in rear fuel tank) (6.0l (vin k)) rear fuel pump & sender assembly
• (in rear fuel tank) (w/o auxiliary fuel tank 31 series) secondary fuel level sensor
• (inside fuel tank) primary fuel pump & sender assembly
• (on right front corner of hvac module) g200
• 4.3l
• 4.3l & 6.6l)
• 5v ref
• 6.6l
• Driver information center (dic) switch (w/ accessory steering control)
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Engine controls system
• Engine oil level (eol) switch (6.6l: on left side of engine oil pan) (except 4.3l & 6.6l: on right side of engine oil pan)
• Engine oil pressure sensor (except 4.3l & 6.6l: top rear of engine) (4.3l: rear of engine)
• Except 4.3l & 6.6l
• Except 6.6l
• Fuel lvl sig
• G103 (except 4.3l & 6.6l) (on front of right cylinder head)
• G106 (6.6l) (lower left side of engine)
• Gnd
• Information vehicle
• Interior lights system
• J203
• Oil lvl sig
• Oil press sig
• Personali- zation
• Pnk
• Set/ reset
• Trip/fuel

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram, with AN3/DL3 for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Courtesy Lamps Wiring Diagram, with AN3/DL3 for Chevrolet Cab & Chassis Silverado HD 2008 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
• Bcm fuse 10a
• Body control module (bcm) (lower left side of dash)
• Center high mounted stop lamp (chmsl)
• Computer data lines system
• Ddm fuse 15a
• Def sw
• Defeat sw
• Dome lamp
• Dome lp sw
• Dome sw
• Dr door
• Driver door latch assembly (in rear of left front door)
• 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 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 sw
• Nca
• Passenger door latch assembly (in rear of right front door)
• Passenger door lock/window switch
• Pdm fuse 15a
• 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 sw
• Ser data
• Serial data
• Sw sig
• Tan
• Volt
• W/ comfort & decor level
• W/o comfort & decor level
• X10
• X12

Courtesy Lamps Wiring Diagram, without AN3/DL3 for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Courtesy Lamps Wiring Diagram, without AN3/DL3 for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in body harness) j301
• (in headliner harness, 15 cm from front inside air temperature sensor breakout) j327
• (in rear of left front door) driver door latch assembly
• (not used)
• (w/ power windows) j502
• 3 convenience package
• 3a3
• 3a5
• 3b6
• Bcm fuse 10a
• Body control module (bcm) (lower left side of dash)
• Center high mounted stop lamp (chmsl)
• Computer data lines system
• Def sw
• Defeat sw
• Dome
• Dome lp sw
• Dome sw
• Dr door
• 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
• I/p fuse block (left side of dash)
• Is lps fuse 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 sw
• Lr dr sw
• Nca
• Passenger door latch assembly (in rear of right front door)
• Reading
• Reading lamps
• Rear dome/ reading lamps (extended cab & crew cab)
• Rf dr sw
• 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 sw
• Serial data
• Tan
• Volt
• W/ comfort & decor level
• W/ crew cab
• W/ electric door lock
• W/o comfort & decor level
• W/o crew cab
• W/o electric door lock
• X10
• X12

Instrument Illumination Wiring Diagram (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Instrument Illumination Wiring Diagram (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (automatic a/c)
• (behind steering wheel)
• (lower left side of dash) left i/p junction block
• 12v
• Anti-lock brakes system
• Auto
• Bcm fuse 10a
• Body control module (bcm) (lower left side of dash)
• Closing sun roof, w/o individual front seat & power mirror
• Computer data lines system
• Dim cntrl
• Dim ctrl
• Dim sig
• Driver information center (dic) switch
• G200 (on right front corner of hvac module)
• G201 (upper left corner of dash)
• Head
• Headlamp & panel dimmer switch
• Hot at all times
• Hvac control module
• 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)
• Lamp, universal garage door opener & rear sliding window
• Led dim
• Left steering wheel control switch
• Logic
• Low ref
• Manual a/c
• Nca
• Off
• Park
• 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
• Seat & power mirror
• Serial data
• Swc bklt fuse 2a
• Tan
• Trailer brake control module (20/30 series: left rear frame rail) (31 series: on left frame rail)
• Trailer brake control switch
• W/ accessory steering wheel control
• W/ active brake control, adjustable power pedals, rear parking assist sensor indicator & heated windshield washer nozzles
• W/ automatic cruise control, steering wheel heater & accessory steering wheel control
• W/ electric door lock control
• W/ electric remote
• W/ power windows,
• W/ roof mounted
• W/ trailer brake
• W/o accessory steering wheel control
• W/o individual front
• W/o individual front seat & power mirror
• Windshield washer solvent heater (w/ windshield heated nozzles) (left rear corner of engine compt)
• X10
• X11

Instrument Illumination Wiring Diagram (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Instrument Illumination Wiring Diagram (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• & power mirror
• (in right end of dash) right i/p junction block
• (on lower left "b" pillar) g303
• 2 hi
• 2b4
• 3b5
• 4 hi
• 4 lo
• Auto 4wd
• Auto 4x4
• Awd
• Closing sun roof, w/o individual front seat & power mirror
• Driver door lock switch
• Driver window switch
• Electronic 4x4
• G200 (on right front corner of hvac module)
• G201 (upper left corner of dash)
• G304 (on lower right "b" pillar)
• Garage door opener (gdo) (if equipped)
• J200
• J312 (in driver seat harness, 5 cm from driver seat belt buckle)
• J323
• J324
• J602
• J603
• J604 (in right front door harness)
• Lamp, universal garage door opener & rear 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/ electric remote
• W/ power windows,
• W/ roof mounted
• W/o individual front
• W/o individual front seat & power mirror

MEMORY SYSTEMS

Adjustable Pedal Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Adjustable Pedal Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in driver seat harness, 5 cm from driver seat adjuster assembly)
• 12v ref
• 5v ref
• Computer data lines system
• Driver seat 2 circuit breaker cb3 25a
• Driver's memory seat circuit
• Dsm fuse 10a
• Electronic adjustable pedal (eap) assembly (under left side of dash)
• Fwd ctrl
• G303 (on lower left "b" pillar)
• Gnd
• Hot at all times
• I/p fuse block (left side of dash)
• I/p multifunction switch
• J306
• J309 (in driver seat harness, 20 cm from x303)
• J310
• J312 (in driver seat harness, 5 cm from driver seat belt buckle)
• Left i/p junction block (lower left side of dash)
• Left i/p junction block (lower left x2 side of dash)
• Low ref
• Memory seat module (msm) (under front of driver's seat)
• Pnk
• Rwd ctrl
• Rwd sig
• Sens sig
• Ser data
• Sw sig
• Tan
• X12
• X13

Driver"s Memory Seat Wiring Diagram (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Driver"s Memory Seat Wiring Diagram (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 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 in x324 breakout)
• (in driver's seat back)
• 12v ref
• 5v ref
• Adjustable pedals circuit
• Adjuster assembly)
• Down ctrl
• Driver seat 2 circuit breaker cb3 25a
• Driver seat adjuster motor assembly (in 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 track)
• Dsm fuse 10a
• 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
• Junction block (lower left side of dash)
• Left i/p
• Memory seat module (under front of driver's seat)
• Pnk
• Rwd ctrl
• Seats system
• Sens sig
• Sply volt
• Tan
• Temp sig
• Up ctrl
• X12

Driver"s Memory Seat Wiring Diagram (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Driver"s Memory Seat Wiring Diagram (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (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
• E (not used)
• Exit
• Fwd
• Fwd sig
• Fwd sw sig
• Horz sw sig
• Low ref
• Memory seat module (under front of driver's seat)
• Pnk
• Recln sw sig
• Rwd
• Rwd sig
• Rwd sw sig
• Seats system
• Serial data
• Sw sig
• Tan
• Up sw sig
• Vert dn sw
• Vert up sw

NAVIGATION

Navigation Wiring Diagram, with Y91 & with UQA (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Navigation Wiring Diagram, with Y91 & with UQA (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in overhead console) cellular telephone microphone
• (left front of roof) cellular/ navigation & digital radio antenna
• (lower left side of dash) left i/p junction block
• (pins: 6-16 not used)
• 6.6l
• Amp fuse 41 fuse 38 30a
• Antenna
• Aud sig
• Audio w/ dvd navigation
• Bare
• Cellular/navigation & digital radio antenna (left front of roof)
• Coax
• Computer data lines system
• Digital radio receiver (behind right end of dash)
• Drain wire
• Except 6.6l
• G301 (below left side of passenger's seat)
• Gmlan
• Gmlan+
• Gmlan-
• Grd
• Green led
• Hot at all times
• Info fuse 27 10a
• Interior lights system
• J204
• Keypad sig
• L aud+
• L aud-
• Led cntrl
• 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-
• Rr aud+
• Rr aud-
• Tan
• Underhood fuse block (left side of engine compt)
• Vehicle communication interface module (vcim) (behind center of dash)
• Voice sig
• Voice sig/ tele sig
• W/ gps
• W/o gps
• X12

Navigation Wiring Diagram, with Y91 & with UQA (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Navigation Wiring Diagram, with Y91 & with UQA (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (left side of center console) noise compensation microphone
• (under rear of center console) audio amplifier
• Amplf+
• Amplf-
• Bare
• Computer data lines system
• Drain wire
• F aud-
• F centr spk+
• F centr spk-
• G301 (below left side of passenger's seat)
• Gmlan
• Grd
• Infrared ref
• Infrared v
• Inside rearview mirror (isrvm)
• J330
• L infrared
• L subwfr-
• Lf aud+
• Lf aud-
• Lf spk+
• Lf spk-
• Lr aud+
• Lr aud-
• Microph volt
• Nca
• Pnk
• R infrared
• R subwfr+
• R subwfr-
• Rear seat audio (rsa) controller
• Rf aud+
• Rf spk+
• Rf spk-
• Rr aud+
• Rr aud-
• Subwfr+
• Subwoofer speaker
• Tan

Navigation Wiring Diagram, with Y91 & with UQA (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Navigation Wiring Diagram, with Y91 & with UQA (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 3a1
• 3a2
• Ampl+
• Ampl-
• Anti-lock brakes system
• Aud low ref
• Audio/video adapter
• Aux vid h
• Aux video h
• Bare
• Center i/p speaker
• Drain wire
• Dvd aud com
• Dvd aud sh
• Dvd comm
• Dvd+
• Dvd-
• Grd
• I/p fuse block (left side of dash)
• Infrared module (in headliner)
• Infrared+
• Infrared-
• L aud sig
• L aux aud
• L aux vid
• L dvd+
• Left front speaker
• Left front tweeter speaker
• Left rear speaker
• Nca
• Nca b+
• Nca dvd+
• Nca dvd-
• Nca enable sig
• Nca grd
• Nca video cntrl
• Nca video sig
• Pnk
• R aud sig
• R aux aud
• R aux vid
• R dvd+
• Radio
• Right front speaker
• Right front tweeter speaker
• Right i/p junction block (in right end of dash)
• Right rear speaker
• Signal+
• Signal-
• Tan
• Video cntrl
• Video display
• Video sig
• Volt
• Vss

Navigation Wiring Diagram, with Y91 & without UQA (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Navigation Wiring Diagram, with Y91 & without UQA (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in overhead console) cellular telephone microphone
• (left front of roof) cellular/ navigation & digital radio antenna
• (lower left side of dash) left i/p junction block
• (pins: 6-16 not used)
• 6.6l
• Antenna
• Aud sig
• Audio w/ dvd navigation
• Bare
• Cellular/ navigation & digital radio antenna (left front of roof)
• Coax
• Computer data lines system
• Digital radio receiver
• Drain wire
• Except 6.6l
• G301 (below left side of passenger's seat)
• Gmlan
• Gmlan+
• Gmlan-
• Gnd
• Grd
• Green led
• Hot at all times
• I/p fuse block (left side of dash)
• Info fuse 27 10a
• Interior lights system
• J204
• Keypad sig
• L aud+
• L aud-
• Led cntrl
• 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
• Underhood fuse block (left side of engine compt)
• Vehicle communication interface module (vcim) (behind center of dash)
• Voice sig
• Voice sig/ tele sig
• W/ gps
• W/o gps
• X12

Navigation Wiring Diagram, with Y91 & without UQA (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Navigation Wiring Diagram, with Y91 & without UQA (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 2a1
• Bare
• 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
• Left i/p junction block x12 (lower left side of dash)
• Nca
• Pnk
• R infrared
• Rear seat audio (rsa) control
• Rear seat ent fuse 16 5a
• Right i/p j/b (in right end of dash)
• Tan
• W/ performance enhanced audio
• W/o performance enhanced audio

Navigation Wiring Diagram, with Y91 & without UQA (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Navigation Wiring Diagram, with Y91 & without UQA (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (w/ performance enhanced audio) left front tweeter speaker
• (w/ performance enhanced audio) right front tweeter speaker
• 3a1
• Anti-lock brakes system
• Aud low ref
• Audio/video adapter
• Aux vid h
• Aux video h
• Bare
• Drain wire
• Dvd aud com
• Dvd aud sh
• Dvd comm
• Dvd+
• Dvd-
• Gnd
• I/p fuse block (left side of dash)
• Infrared module (in headliner)
• Infrared+
• Infrared-
• L aud sig
• L aux aud
• L aux vid
• L dvd+
• Left front speaker
• Left rear speaker
• Nca
• Nca b+
• Nca dvd+
• Nca dvd-
• Nca enable sig
• Nca gnd
• Nca video cntrl
• Nca video sig
• Pnk
• R aud sig
• R aux aud
• R aux vid
• R dvd+
• Radio
• Right front speaker
• Right rear speaker
• Signal+
• Signal-
• Tan
• Video cntrl
• Video display
• Video sig
• Volt
• Vss

Navigation Wiring Diagram, without Y91 & with UQA (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Navigation Wiring Diagram, without Y91 & with UQA (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in overhead console) cellular telephone microphone
• (left front of roof) cellular/ navigation & digital radio antenna
• (lower left side of dash) left i/p junction block
• 6.6l
• Amp fuse 41 fuse 38 30a
• Ampl cntrl
• Antenna
• Aud sig
• Audio w/ dvd navigation
• Bare
• Cellular/navigation & digital radio antenna (left front of roof)
• Coax
• Computer data lines system
• Digital radio receiver (behind right end of dash)
• Drain wire
• Except 6.6l
• G301 (below left side of passenger's seat)
• Gmlan
• Gmlan+
• Gmlan-
• Grd
• Green led
• Hot at all times
• Info fuse 27 10a
• Interior lights system
• 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
• Not used
• 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)
• Vehicle communication interface module (vcim) (behind center of dash)
• Voice sig
• W/ gps
• W/o gps
• X12

Navigation Wiring Diagram, without Y91 & with UQA (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Navigation Wiring Diagram, without Y91 & with UQA (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (under rear of center console) audio amplifier
• 2a1
• Ampl cntrl
• Bare
• Computer data lines system
• Drain wire
• F aud-
• G301 (below left side of passenger's seat)
• Gmlan
• Grd
• 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-
• Lf aud+
• Lf aud-
• Lf spk+
• Lf spk-
• Lr aud+
• Lr aud-
• Nca
• Pnk
• R infrared
• R subwfr+
• R subwfr-
• Rear seat audio (rsa) controller
• Rear seat ent fuse 5a
• Rem enable
• Rf aud+
• Rf spk+
• Rf spk-
• Right i/p j/b (in right end of dash)
• Rr aud
• Rr aud+
• Rr aud-
• Subwoofer speaker
• Tan

Navigation Wiring Diagram, without Y91 & with UQA (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Navigation Wiring Diagram, without Y91 & with UQA (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 3a1
• 3a2
• Anti-lock brakes system
• Aud low ref
• Audio/video adapter
• Aux vid h
• Aux video h
• Bare
• Drain wire
• Dvd aud com
• Dvd aud sh
• Dvd comm
• Dvd+
• Dvd-
• Grd
• I/p fuse block (left side of dash)
• Infrared module (in headliner)
• Infrared+
• Infrared-
• L aud sig
• L aux aud
• L aux vid
• L dvd+
• Left front speaker
• Left front tweeter speaker
• Left rear speaker
• Nca
• Nca b+
• Nca dvd+
• Nca dvd-
• Nca enable sig
• Nca grd
• Nca video cntrl
• Nca video sig
• Pnk
• R aud sig
• R aux aud
• R aux vid
• R dvd+
• Radio
• Right front speaker
• Right front tweeter speaker
• Right i/p junction block (in right end of dash)
• Right rear speaker
• Signal+
• Signal-
• Tan
• Video cntrl
• Video display
• Video sig
• Volt
• Vss

Navigation Wiring Diagram, without Y91 & without UQA (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Navigation Wiring Diagram, without Y91 & without UQA (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in overhead console) cellular telephone microphone
• (left front of roof) cellular, navigation & digital radio antenna
• (lower left side of dash) left i/p junction block
• (pins: 6-16 not used)
• 6.6l
• Antenna
• Aud sig
• Audio w/ dvd navigation
• Bare
• Cellular/ navigation & digital radio antenna (left front of roof)
• Coax
• Computer data lines system
• Digital radio receiver
• Drain wire
• Except 6.6l
• G301 (below left side of passenger's seat)
• Gmlan
• Gmlan+
• Gmlan-
• Gnd
• Grd
• Green led
• Hot at all times
• I/p fuse block (left side of dash)
• Info fuse 27 10a
• Interior lights system
• 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)
• Vehicle communication interface module (vcim) (behind center of dash)
• Voice sig
• Voice sig/ tele sig
• W/ gps
• W/o gps
• X12

Navigation Wiring Diagram, without Y91 & without UQA (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Navigation Wiring Diagram, without Y91 & without UQA (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 2a1
• Bare
• 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
• Left i/p junction block x12 (lower left side of dash)
• Pnk
• R infrared
• Rear seat audio (rsa) control
• Rear seat ent fuse 16 5a
• Right i/p j/b (in right end of dash)
• Tan
• W/ performance enhanced audio
• W/o performance enhanced audio

Navigation Wiring Diagram, without Y91 & without UQA (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Navigation Wiring Diagram, without Y91 & without UQA (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (w/ performance enhanced audio) left front tweeter speaker
• (w/ performance enhanced audio) right front tweeter speaker
• Anti-lock brakes system
• Aud low ref
• Audio/video adapter
• Aux vid h
• Aux video h
• Bare
• Drain wire
• Dvd aud com
• Dvd aud sh
• Dvd comm
• Dvd+
• Dvd-
• Gnd
• I/p fuse block (left side of dash)
• Infrared module (in headliner)
• Infrared+
• Infrared-
• L aud sig
• L aux aud
• L aux vid
• L dvd+
• Left front speaker
• Left rear speaker
• Nca
• Nca b+
• Nca dvd+
• Nca dvd-
• Nca enable sig
• Nca gnd
• Nca video cntrl
• Pnk
• R aud sig
• R aux aud
• R aux vid
• R dvd+
• Radio
• Right front speaker
• Right rear speaker
• Signal+
• Signal-
• Tan
• Video cntrl
• Video display
• Video sig
• Volt
• Vss

Parking Assistant Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Parking Assistant Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 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
• Amber ind
• B5 x2
• Body control module (bcm) (lower left side of dash)
• Computer data lines system
• Disable sig
• Driver information center (dic) display
• Gmlan
• Gnd
• Hot at all times
• I/p fuse block (left side of dash)
• I/p multi-function switch
• Ind dim
• J201
• J302
• J404
• Led disable
• Left i/p junction block (lower left side of dash)
• Left rear corner object sensor (left corner of rear bumper)
• Left rear middle object sensor (left side of rear bumper)
• Low ref
• Lr sns sig
• Obs det fuse 10a
• Rear object sensor control module (at rear cargo area, behind trim panel)
• Rear park assist disable switch
• Red ind
• Right rear corner object sensor (right corner of rear bumper)
• Right rear middle object sensor (right side of rear bumper)
• Rr sns sig
• Sns sig

POWER DISTRIBUTION

6.0L VIN K

6.0L VIN K, Power Distribution Wiring Diagram (1 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.0L VIN K, Power Distribution Wiring Diagram (1 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 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
• (info not available)
• (not used)
• (on lower left front of engine) (except 4.3l) g102
• 175a
• 4 speed a/t
• 6 speed a/t
• 6.0l (vin k)
• 6a6
• Auto 4x4
• Automatic a/c
• Auxiliary battery relay (if equipped) (rear of x1 engine compt)
• Auxiliary battery run relay
• Body builder emergency lamp
• Body control module (bcm)
• Data link connector (dlc)
• Ecm- batt fuse 12 10a
• Electronic 4x4 & auto 4x4
• Engine control module (ecm)
• Evaporative emission (evap) canister vent solenoid valve
• From left i/p j/b (diagram 4 of 6)
• From underhood fuse block (diagram 6 of 6)
• Fuse a 30a
• Fuse b 30a
• Fuse c 30a
• Fuse d 30a
• Fuse holder (right side of firewall)
• 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
• 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
• Ltr fuse 53 20a
• Manual a/c
• Mega fuse (right rear of engine compt)
• Mega fuse 125a
• Mega fuse 175a
• Mega fuse 60a
• Nca
• Red
• Relay a
• Relay b
• Right battery
• Right i/p j/b (in right end of dash)
• Seo b2 fuse 37 30a
• Side of dash)
• Starter
• Stud 2 fuse 63 30a
• Tcm-batt fuse 14 15a
• To roof beacon switch (diagram 2 of 6)
• To stud 1 fuse 68 (diagram 2 of 6)
• To underhood fuse block (diagram 2 of 6)
• To underhood fuse block (diagram 3 of 6)
• 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)
• W/ auxiliary battery
• W/ emergency vehicle roof lamp relay
• W/ wrecker emergency lamp provisions
• W/ wrecker relay
• Windshield washer solvent heater (if equipped)
• Wrecker relay
• Wsw/htr fuse 66 60a
• X14

6.0L VIN K, Power Distribution Wiring Diagram (2 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.0L VIN K, Power Distribution Wiring Diagram (2 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in camper harness) j414
• (in sliding rear window jumper harness) j336
• (not used)
• (w/ individual front seat) j315
• Abs-1 fuse 61 40a
• Abs-2 fuse 9 25a
• Bcm fuse 10a
• Blower motor control module
• Body control module (bcm)
• Comfort & decor level 3 convenience package
• Cooled seats fuse 30a
• Ctsy fuse 15a
• Ddm fuse 15a
• Dim fuse 15a
• Driver door lock/ window switch
• Driver power seat adjuster
• 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, 5.3l (vin o), 6.0l & 5.3l (vin 3)
• From fusible link 3 (diagram 1 of 6)
• From ipc f fuse 46 (diagram 1 of 6)
• From pdm fuse (diagram 3 of 6)
• From right i/p j/b (diagram 1 of 6)
• Front seat
• Fscm fuse 21 20a
• Fuel system control module (fscm)
• G200 (on right front corner of hvac module)
• Heavy duty abs fuse 59 60a
• Hvac blwr fuse 70 40a
• Hydraulic power brake control
• I/p fuse block (left side of dash)
• J323
• Lbec 2 fuse 72 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 10a
• Of dash)
• Outside rearview mirror switch
• Pass seat 1 circuit breaker cb2 25a
• Passenger door lock/ window switch
• Passenger power seat adjuster
• 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 x3 dash)
• Right i/p j/b (in right end of x6 dash)
• Right rear window switch
• Roof beacon relay (in overhead console)
• Roof beacon switch
• Rt doors circuit breaker cb1 25a
• Rt stop trn fuse 15a
• S/roof fuse 34 30a
• Sliding rear window close relay
• Sliding rear window open relay
• Stud 1 fuse 68 (auxiliary battery) 40a
• Sunroof module
• To lgm fuse 71 (diagram 3 of 6)
• Trailer connector
• Underhood fuse block (left side of engine compt)
• W/ active & vacuum power brake control
• W/ comfort & decor level 3 convenience package
• W/ electrical alarm bulb & camper trailer provision
• W/ electrical alarm bulb & w/o camper trailer provision
• W/ individual
• W/ individual front seat
• W/ individual front seat & power mirror
• W/ power window
• W/ restraint system
• W/ roof beacon relay
• W/ sunroof
• W/ truck trailer hd wiring harness
• W/ wrecker & emergency vehicle roof lamp relay
• W/o comfort & decor level 3 convenience package
• W/o individual
• W/o individual front seat
• W/o individual front seat & power mirror
• X10
• X11
• X12

6.0L VIN K, Power Distribution Wiring Diagram (3 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.0L VIN K, Power Distribution Wiring Diagram (3 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in pto jumper harness) (w/ power take off) j127
• (lower left side of dash) left i/p j/b
• (not used)
• 2a1
• Air bag batt fuse 45 15a
• Alc/comp fuse 58 40a
• Amp fuse 41 30a
• Audio amplifier (premium audio branded w/ amplifier speaker system)
• Automatic a/c
• Aux pwr 2 fuse 20a
• Aux pwr fuse 20a
• Body control module (bcm)
• Center console accessory power outlet
• Center console compartment accessory power outlet
• Center seat accessory power outlet
• Chime module
• Comfort & decor level 3 convenience package
• Crew cab w/ individual front seat
• Digital radio receiver (if equipped)
• Enhanced audio
• Esc/alc exh fuse 2 30a
• Exp/pto fuse 47 15a
• From auxiliary battery run relay (diagram 1 of 6)
• From fscm fuse 21 (diagram 2 of 6)
• G200 (on right front corner of hvac module)
• G304 (on lower right "b" pillar)
• Garage door opener (gdo)
• Hvac control module
• I/p 2 accessory power outlet
• I/p fuse block (left side of dash)
• Inflatable restraint passenger presence system (pps) module (if equipped)
• Inflatable restraint sensing & diagnostic module (sdm)
• Inflatable restraint vehicle rollover sensor
• Info fuse 10a
• Is lps fuse 10a
• J200
• J203
• J304
• Lbec 1 fuse 64 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 15a
• Luxury edition
• Manual a/c
• Merchandised package
• Nca
• Of dash)
• Passenger door lock/ window switch
• Pdm fuse (w/ comfort & decor level 3 convenience package & luxury) 15a
• Performance
• Power locks w/o individual front seat & power mirror
• Power take off (pto) relay
• Premium audio branded
• Radio
• Rdo fuse 42 15a
• Rear seat audio (rsa) control (if equipped)
• Rear seat ent fuse 5a
• Right i/p j/b (in right end of dash)
• Right i/p j/b (in right end of x2 dash)
• Stop lamps fuse 15a
• To body control module (diagram 4 of 6)
• To dlis fuse 35 (diagram 4 of 6)
• To left i/p block (diagram 2 of 6)
• To lt dr circuit breaker (diagram 2 of 6)
• Underhood fuse block (left side of engine compt)
• Unlock pcb relay
• Vehicle communication interface module (vcim)
• Video display
• W/ amplifier speaker system
• W/ az3
• W/ custom console front compt floor
• W/ head curtain air bag
• W/ individual front seat & power mirror
• W/ luxury
• W/ rear seat entertain- ment package
• W/ universal garage door opener
• W/ wrecker, emergency vehicle roof lamp & roof beacon relay
• W/o luxury
• W/o radio
• Windshield washer solvent heater (if equipped)
• X11

6.0L VIN K, Power Distribution Wiring Diagram (4 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.0L VIN K, Power Distribution Wiring Diagram (4 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (if equipped) windshield outside moisture sensor
• (in instrument panel harness, in transfer case shift control module connector breakout) j207
• (in the steering column harness) j216
• (not used)
• 12v
• 2a1
• 2a4
• 4 speed a/t
• 4.3l
• 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 35 2a
• Driver window switch
• Electronic 4x4 & auto 4x4
• Engine control module (ecm)
• Except 4.3l
• Except comfort & decor level 3 convenience package w/o individual front seat & power mirror
• Except electronic 4x4 & auto 4x4
• From lbec 1 fuse 64 (diagram 3 of 6)
• From underhood fuse block (diagram 3 of 6)
• Ign
• Ignition switch
• Inflatable restraint steering wheel module coil
• J104 (in engine harness, 5 cm from engine control module connector breakout)
• J212 (in steering column harness)
• J231
• Left i/p j/b (lower left side of dash)
• Left steering wheel control switch
• Nca
• Off
• Passenger window switch
• Pnk
• Rear sliding window switch (if equipped)
• Right i/p j/b (in right end of dash)
• 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 mobile radio fuse block (diagram 1 of 6)
• To run/crnk relay (diagram 5 of 6)
• To underhood fuse block (diagram 5 of 6)
• Transfer case shift control module
• Transfer case shift control switch
• Transmission control module (tcm)
• Underhood fuse block (left side of engine compt)
• W/ 10 series
• W/ 10 series, auto 4x4 & electronic 4x4
• W/ 4 speed, accessory steering wheel & automatic electronic cruise control
• W/ 6 speed
• W/ accessory steering wheel & automatic electronic cruise control
• W/ accessory steering wheel control
• W/ power window
• W/0 10 series, auto 4x4 & electronic 4x4
• W/o accessory steering wheel & automatic electronic cruise control
• W/o accessory steering wheel control
• X14
• X201

6.0L VIN K, Power Distribution Wiring Diagram (5 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.0L VIN K, Power Distribution Wiring Diagram (5 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in fuse block jumper harness) j220
• (not used)
• 4-speed a/t
• 4wd & 2 speed manual shift control transfer case
• 6-speed a/t
• 7.5a
• A/c cmprsr relay
• Air bag ign fuse 40 10a
• Automatic transmission
• Aux hvac- ign fuse 48 10a
• Bck/up lamp pcb relay
• Chmsl pcb relay
• Drl pcb relay
• Ecm-ign fuse 56 15a
• Engine control module (ecm)
• Except 4wd & 2 speed manual shift control transfer case
• Fog lamp relay
• From body control module (diagram 4 of 6)
• From dlis fuse 35 (diagram 4 of 6)
• Front drive axle actuator
• Frt wash pcb relay
• Frt wpr fuse 36 25a
• Fuel pmp relay
• Fuel system control module (fscm)
• 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 fuse
• Heated steering wheel control module
• Hi beam pcb relay
• Horn pcb relay
• Hvac-ign fuse 55 10a
• Inflatable restraint i/p module disable switch (if equipped)
• Inflatable restraint passenger air bag on/off indicator (if equipped)
• Inflatable restraint sensing & diagnostic module (sdm)
• Inflatable restraint steering wheel module coil
• Inside rearview mirror (isrvm)
• Instrument panel cluster (ipc)
• J105
• J130 (in engine harness)
• L/gate pcb relay
• Left air temperature actuator (automatic a/c)
• Left i/p j/b (lower left x9
• Misc ing fuse 43 10a
• Mode actuator
• Nca
• Park lamp relay
• Pnk
• Rear defog relay
• 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 relay (6.0l (vin k) w/o auxiliary fuel tank)
• Seo/alc fuse 54 10a
• Side of dash)
• Stop lamp switch
• Strtr relay
• To fan 1 fuse 57 (diagram 6 of 6)
• Trailer brake control module (if equipped)
• Trans ign 1 fuse 19 15a
• Transfer case shift control module
• 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/ auto 4x4 & electronic 4x4
• W/ steering wheel heater
• W/o 4.3l, 5.3l (vin o), 6.0l (vin k) & 5.3l (vin 3)
• W/o steering wheel heater
• Wiper control pcb relay
• Wiper speed pcb relay
• X1 left i/p j/b (lower left x9
• X11
• X12
• X14
• X175

6.0L VIN K, Power Distribution Wiring Diagram (6 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.0L VIN K, Power Distribution Wiring Diagram (6 of 6) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in ignition coil jumper harness, between ignition coils 4 & 2) j110
• (in ignition coil jumper harness, between ignition coils 5 & 7) j107
• (in spo theft harness) j227
• (not used)
• 4.3l
• Auxiliary battery
• Central sequential fuel injection (central sfi)
• 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
• Fan cntrl relay
• Fan hi relay
• Fan lo relay
• Fan-1 fuse 57 40a
• Fan-2 fuse 60 40a
• From frt wpr p fuse 36 (diagram 5 of 6)
• Fuel injector
• Heated oxygen sensor (ho2s) bank 1 sensor 1
• Heated oxygen sensor (ho2s) bank 1 sensor 2
• Heated oxygen sensor (ho2s) bank 2 sensor 1
• Heated oxygen sensor (ho2s) bank 2 sensor 2
• Ignition coil/ module
• Ignition control module (icm)
• Inj-a fuse 24 20a
• Inj-b fuse 13 (except 4.3l) 20a
• 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) j128
• Power take off (pto) module (if equipped)
• Pwr/ trn relay
• Security indicator lamp
• Seo b1 fuse 52 15a
• Spo alarm
• To auxiliary battery run relay (diagram 1 of 6)
• Underhood fuse block (left side of engine compt)
• Valve lifter oil manifold (vlom) assembly (5.3l, 6.0l & 6.2l)
• Vehicle inclination sensor
• Vehicle shock sensor
• W/ comfort & decor level 3 convenience package & luxury
• X14
• X2 left i/p j/b (lower left side of dash)

6.6L VIN 6

6.6L VIN 6, Power Distribution Wiring Diagram (1 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.6L VIN 6, Power Distribution Wiring Diagram (1 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in fuse block jumper harness) j209
• (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
• (info not available)
• (not used)
• Auto 4x4
• Automatic a/c
• Auxiliary generator
• Body builder emergency lamp
• Body control module (bcm)
• Data link connector (dlc)
• Ecm- batt fuse 11 10a
• Electronic 4x4 & auto 4x4
• Engine control module (ecm)
• From left i/p j/b (diagram 4 of 5)
• Fuse a 30a
• Fuse b 30a
• Fuse c 30a
• Fuse d 30a
• Fuse holder (right side of firewall)
• 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
• 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 x2
• Ltr fuse 50 20a
• Manual a/c
• Mega fuse 125a
• Mega fuse 175a
• Nca
• Red
• Relay a
• Relay b
• Right battery
• Right i/p j/b (in right end of dash)
• Seo b2 fuse 34 30a
• Side of dash)
• Starter
• Stud 2 fuse 58 30a
• Tcm-batt fuse 7 15a
• 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)
• W/ dual generator
• W/ emergency vehicle roof lamp relay
• W/ wrecker emergency lamp provisions
• W/ wrecker relay
• Windshield washer solvent heater (if equipped)
• Wrecker relay
• Wsw/htr fuse 61 60a
• X14

6.6L VIN 6, Power Distribution Wiring Diagram (2 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.6L VIN 6, Power Distribution Wiring Diagram (2 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in camper harness) j414
• (in sliding rear window jumper harness) j336
• (not used)
• (w/ individual front seat) j315
• Abs-1 fuse 56 40a
• Abs-2 fuse 8 25a
• Bcm fuse 10a
• Blower motor control module
• Body control module (bcm)
• Cooled seats fuse 30a
• Ctsy fuse 15a
• Ddm fuse 15a
• Dim fuse 15a
• Driver door lock/ window switch
• Driver power seat adjuster
• 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)
• From ipc c fuse 43 (diagram 1 of 5)
• From pdm fuse (diagram 3 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
• Hydraulic power brake control
• I/p fuse block (left side of dash)
• J323
• Lbec 2 fuse 67 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 10a
• Of dash)
• Outside rearview mirror switch
• Pass seat 1 circuit breaker cb2 25a
• Passenger door lock/ window switch
• Passenger power seat adjuster
• 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
• Right i/p j/b (in right end of x3 dash)
• Right i/p j/b (in right end of x6 dash)
• Right rear window switch
• Roof beacon relay (in overhead console)
• Roof beacon switch
• Rt doors circuit breaker cb1 25a
• Rt stop trn fuse 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)
• Trailer connector
• Underhood fuse block (left side of engine compt)
• W/ active & vacuum power brake control
• W/ comfort & decor level 3 convenience package
• W/ electrical alarm bulb & camper trailer provision
• W/ electrical alarm bulb & w/o camper trailer provision
• W/ individual
• W/ individual front seat
• W/ individual front seat & power mirror
• W/ power window
• W/ restraint system
• W/ roof beacon relay
• W/ sunroof
• W/ truck trailer hd wiring harness
• W/ wrecker & emergency vehicle roof lamp relay
• W/o comfort & decor level 3 convenience package
• W/o individual
• W/o individual front seat
• W/o individual front seat & power mirror
• X10
• X11
• X12

6.6L VIN 6, Power Distribution Wiring Diagram (3 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.6L VIN 6, Power Distribution Wiring Diagram (3 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in pto jumper harness) (w/ power take off) j127
• (lower left side of dash) left i/p j/b
• (not used)
• 2a1
• Air bag batt fuse 42 15a
• Alc/comp fuse 54 40a
• Amp fuse 38 30a
• Audio amplifier (premium audio branded w/ amplifier speaker system)
• Automatic a/c
• Aux pwr 2 fuse 20a
• Aux pwr fuse 20a
• Body control module (bcm)
• Center console accessory power outlet
• Center console compartment accessory power outlet
• Center seat accessory power outlet
• Chime module
• Comfort & decor level 3 convenience package
• Crew cab w/ individual front seat
• Digital radio receiver (if equipped)
• Enhanced audio
• Esc/alc exh fuse 1 30a
• Exp/pto fuse 44 15a
• From heavy duty abs fuse 55 (diagram 2 of 5)
• G200 (on right front corner of hvac module)
• G304 (on lower right "b" pillar)
• Garage door opener (gdo)
• Hvac control module
• I/p 2 accessory power outlet
• I/p fuse block (left side of dash)
• Inflatable restraint passenger presence system (pps) module (if equipped)
• Inflatable restraint sensing & diagnostic module (sdm)
• Inflatable restraint vehicle rollover sensor
• Info fuse 10a
• Is lps fuse 10a
• J200
• J203
• J304
• Lbec 1 fuse 59 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 15a
• Luxury edition
• Manual a/c
• Merchandised package
• Nca
• Of dash)
• Passenger door lock/ window switch
• Pdm fuse (w/ comfort & decor level 3 convenience package & luxury) 15a
• Performance
• Power locks w/o individual front seat & power mirror
• Power take off (pto) relay
• Premium audio branded
• Radio
• Rdo fuse 39 15a
• Rear seat audio (rsa) control (if equipped)
• Rear seat ent fuse 5a
• Right i/p j/b (in right end of dash)
• Right i/p j/b (in right end of x2 dash)
• Stop lamps fuse 15a
• To body control module (diagram 4 of 5)
• To dlis fuse 32 (diagram 4 of 5)
• To left i/p block (diagram 2 of 5)
• To lt dr circuit breaker (diagram 2 of 5)
• Underhood fuse block (left side of engine compt)
• Unlock pcb relay
• Vehicle communication interface module (vcim)
• Video display
• W/ amplifier speaker system
• W/ az3
• W/ custom console front compt floor
• W/ head curtain air bag
• W/ individual front seat & power mirror
• W/ luxury
• W/ rear seat entertain- ment package
• W/ universal garage door opener
• W/ wrecker, emergency vehicle roof lamp & roof beacon relay
• W/o luxury
• W/o radio
• Windshield washer solvent heater (if equipped)
• X11

6.6L VIN 6, Power Distribution Wiring Diagram (4 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.6L VIN 6, Power Distribution Wiring Diagram (4 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (if equipped) windshield outside moisture sensor
• (in engine harness, 5 cm from engine control module connector breakout) j104
• (in instrument panel harness, in transfer case shift control module connector breakout) j207
• (in the steering column harness) j216
• (not used)
• 12v
• 2a1
• 2a4
• 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 window switch
• Engine control module (ecm)
• Except comfort & decor level 3 convenience package w/o individual front seat & power mirror
• From lbec 1 fuse 59 (diagram 3 of 5)
• From underhood fuse block (diagram 3 of 5)
• Glow plug control module (gpcm)
• Ign
• Ignition switch
• Inflatable restraint steering wheel module coil
• J212 (in steering column harness)
• J231
• Left i/p j/b (lower left side of dash)
• Left steering wheel control switch
• Nca
• Off
• Passenger window switch
• Pnk
• Rear sliding window switch (if equipped)
• Right i/p j/b (in right end of dash)
• 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 mobile radio fuse block (diagram 1 of 5)
• To run/crnk relay (diagram 5 of 5)
• To underhood fuse block (diagram 5 of 5)
• Transfer case shift control module
• Transfer case shift control switch
• Transmission control module (tcm)
• Underhood fuse block (left side of engine compt)
• W/ 10 series
• W/ 10 series, auto 4x4 & electronic 4x4
• W/ 4 speed, accessory steering wheel & automatic electronic cruise control
• W/ 6 speed
• W/ accessory steering wheel & automatic electronic cruise control
• W/ accessory steering wheel control
• W/ electronic 4x4 & auto 4x4
• W/ power window
• W/0 10 series, auto 4x4 & electronic 4x4
• W/o accessory steering wheel & automatic electronic cruise control
• W/o accessory steering wheel control
• W/o electronic 4x4 & auto 4x4
• X14
• X201

6.6L VIN 6, Power Distribution Wiring Diagram (5 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.6L VIN 6, Power Distribution Wiring Diagram (5 of 5) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in fuse block jumper harness) j220
• (in spo theft harness) j227
• (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
• Drl pcb relay
• Eap fuse 35 15a
• Ecm-ign fuse 53 15a
• Electronic adjustable pedals pcb relay
• Engine control module (ecm)
• 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
• Fuel pmp relay
• G103 (on front of right cylinder head)
• Hdlp lo/hid relay
• Heated steering fuse
• Heated steering wheel control module
• Hi beam pcb relay
• Horn pcb relay
• Hvac-ign fuse 52 10a
• Inflatable restraint i/p module disable switch (if equipped)
• Inflatable restraint passenger air bag on/off indicator (if equipped)
• Inflatable restraint sensing & diagnostic module (sdm)
• Inflatable restraint steering wheel module coil
• Inside rearview mirror (isrvm)
• Instrument panel cluster (ipc)
• J105
• L/gate pcb relay
• Left air temperature actuator (automatic a/c)
• Left i/p j/b (lower left x9
• Misc ing fuse 40 10a
• Mode actuator
• Nca
• Park enable pcb relay
• Park lamp relay
• Pnk
• Power take off (pto) module (if equipped)
• Pwr/trn relay
• Rear defog relay
• 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
• Security indicator lamp
• Seo b1 fuse 49 15a
• Seo/alc fuse 51 10a
• Side of dash)
• Spo alarm
• Stop lamp switch
• Strtr relay
• Trailer brake control module (if equipped)
• Trans ign 1 fuse 13 15a
• Transfer case shift control module
• Transmission control module (tcm)
• Trlr lt stop/turn pcb relay
• Trlr rt stop/turn pcb relay
• Underhood fuse block (left side of engine compt)
• Vehicle inclination sensor
• Vehicle shock sensor
• W/ auto 4x4 & electronic 4x4
• W/ comfort & decor level 3 convenience package & luxury
• W/ steering wheel heater
• W/o steering wheel heater
• Wiper control pcb relay
• Wiper speed pcb relay
• Wpr fuse 33 25a
• X1 left i/p j/b (lower left x9
• X11
• X12
• X14
• X2 left i/p j/b (lower left side of dash)

POWER DOOR LOCKS

Power Door Locks Wiring Diagram, Base for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Power Door Locks Wiring Diagram, Base for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 3a4
• 3a6
• 3b3
• 3b4
• Bcm fuse 10a
• Body control module (bcm) (lower left side of dash)
• Class 2
• Coax
• Computer data
• Computer data lines system
• Dim fuse 15a
• Driver door latch assembly (rear of driver's door)
• Driver door lock switch
• Driver information center (dic)
• Dsm fuse 10a
• Dvr unlck fuse 15a
• G201 (upper left corner of dash)
• G302 (below right side of passenger's seat)
• Gmlan
• Gnd
• Hot at all times
• I/p fuse block (left side of dash)
• Instrument panel cluster (ipc)
• J502
• J602
• Keyless entry antenna
• Lck 1 fuse 15a
• Lck 2 fuse 15a
• Lck cntrl
• Lck sig
• Left rear door latch assembly (crew cab) (rear of left rear door)
• Lines system
• Lock actuator
• Lock pcb relay
• Logic
• Passenger door latch assembly (rear of passenger's door)
• Passenger door lock switch
• 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
• Tan
• Unlck 1 fuse 10a
• Unlck 2 fuse 15a
• Unlck cntrl
• Unlck sig
• Unlock pcb relay
• W/ convenience package
• W/o convenience package

Power Door Locks Wiring Diagram, Premium for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Power Door Locks Wiring Diagram, Premium for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 3b2
• 4a7
• Bcm fuse 10a
• Body control module (bcm) (lower left side of dash)
• Class 2
• Coax
• Computer data lines system
• Ddm fuse 15a
• Dim fuse 15a
• Door lock switch
• Driver door latch assembly (rear of driver's door)
• Driver door lock/ window switch
• Driver information center (dic)
• Dsm fuse 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
• Hot at all times
• I/p fuse block (left side of dash)
• Instrument panel cluster (ipc)
• Key switch
• Keyless entry antenna
• Lck 1 fuse 15a
• Lck cntrl
• Left rear door latch assembly (crew cab) (rear of left rear door)
• Lock
• Lock actuator
• Lock cntrl
• Lock/ unlock pcb relay
• Logic
• Passenger door latch assembly (rear of passenger's door)
• Passenger door lock/ window switch
• Pdm fuse 15a
• Remote control door lock receiver (rcdlr) (top rear of passenger compt)
• Right i/p junction block (in right x1 end of dash)
• Right rear door latch assembly (crew cab) (rear of right rear door)
• Security indicator
• Sw gnd
• Sw sig
• Tan
• Unlck 1 fuse 15a
• Unlck cntrl
• Unlock

POWER MIRRORS

Electrochromic Mirror Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Electrochromic Mirror Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (4.8l/5.3l/6.0l/6.2l: on lower left front of engine) (4.3l: top left rear of engine) (6.6l: on front of right cylinder head)
• 4.3l
• 4.8l/5.3l/6.0l/6.2l
• 6.6l
• Ambient air temperature display
• Ambient air temperature sensor (on radiator support)
• Ambient light
• Aux hvac ign fuse 45 fuse 48 15a
• Backup rly
• Body control module (bcm) (lower left side of dash)
• Compass display
• Driver door lock/ window switch
• Driver outside rearview mirror
• Electro- chromic
• Emergency sw
• Except 6.6l
• G102
• G103
• G107
• 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 (w/ onstar)
• Led sig
• Left i/p junction block (lower left x10 side of dash)
• Logic
• Low ref
• Mirr sig
• Onstar button assembly
• Onstar sw
• Pnk
• Red light
• Run/crank relay
• Run/crank rly
• Selector switch
• Sens sig
• Sig
• Steering wheel heater)
• Tele- phone sw
• Underhood fuse block (left side of engine compt)
• Vehicle communication interface module (vcim) (behind center of dash)
• Volt
• W/ power folding mirrors
• X10

Power Mirrors Wiring Diagram, Manual Foldiing Mirror for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Power Mirrors Wiring Diagram, Manual Foldiing Mirror for Chevrolet Cab & Chassis Silverado HD 2008 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 2a
• Right
• Tan

Power Mirrors Wiring Diagram, Power Foldiing Mirror (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Power Mirrors Wiring Diagram, Power Foldiing Mirror (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 5v ref
• Computer data lines system
• Ddm fuse 15a
• Defogger switch
• Down
• Driver door lock/ window switch
• Driver outside rearview mirror
• Electro- chromic
• Electrochromic mirror circuit
• Extend
• Extend ctrl
• 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, Power Foldiing Mirror (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Power Mirrors Wiring Diagram, Power Foldiing Mirror (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 3b2
• 4a7
• 5v ref
• Computer data lines system
• Extend ctrl
• G200 (on right front corner of hvac module)
• Gnd
• 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 15a
• Position ctrl
• Retract ctrl
• Right i/p junction block (in right end of dash)
• Sens sig
• Serial data
• Sply volt

POWER SEATS

Adjustable Pedal Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Adjustable Pedal Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 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)

Driver Power Seat Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Driver Power Seat Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 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

Heated Seats Wiring Diagram (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Heated Seats Wiring Diagram (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 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 (in driver seat harness, 5 cm from memory seat module x4 breakout)
• J316 (in passenger seat harness, 5 cm from x305 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

Heated Seats Wiring Diagram (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Heated Seats Wiring Diagram (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 3b2
• 4a7
• Back & cushion ind ctrl
• Back ind ctrl
• Back seat ind
• Computer data lines system
• Cushion/back ind
• Ddm fuse 15a
• Dimming ctrl
• Driver door lock/ window switch
• Driver heated seat switch
• Dsm fuse 10a
• G200 (on right front corner of hvac module)
• G201 (upper left corner of dash)
• Gnd
• 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 15a
• Pnk
• Right i/p junction block (in right end of dash)
• Serial data
• Tan

Heated Steering Wheel Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Heated Steering Wheel Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (except 6.6l) (6.6l)
• 7.5a
• Aux hvac ign fuse 48 fuse 45 10a
• Body control module (bcm) (lower left side of dash)
• Dim sig
• G200 (on right front corner of hvac module)
• Gnd
• Heated steering fuse
• Heated steering wheel
• Heated steering wheel control module (in steering wheel)
• Heated steering wheel ind
• Heated steering wheel switch
• Hot at all times
• Ign
• Inflatable restraint steering wheel module coil (behind steering wheel)
• J214
• J220
• J223
• Led cntrl
• Left steering wheel control switch
• Nca
• Pnk
• Red
• Sns sig
• Sw sig
• Underhood fuse block (left side of engine compt)
• Whl cntrl

Passenger Power Seat Wiring Diagram, 6-Way Power Seat for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Passenger Power Seat Wiring Diagram, 6-Way Power Seat for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• Fwd
• G304 (on lower right "b" pillar)
• Hot at all times
• J314
• 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

Passenger Power Seat Wiring Diagram, 8-Way Power Seat for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Passenger Power Seat Wiring Diagram, 8-Way Power Seat for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in passenger's seat back)
• Fwd
• G304 (on lower right "b" pillar)
• Hot at all times
• J314
• 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

POWER TOP/SUNROOF

Power Top/Sunroof Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Power Top/Sunroof Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (gas) (diesel)
• 2b1
• 2b3
• Accsy volt
• Body control module (lower left side of dash)
• Close
• Crew cab
• G200 (on right front corner of hvac module)
• Ground
• Hot at all times
• Illumination lamp
• Interior lights system
• 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 clos sig
• Roof open sig
• S/roof fuse 34 fuse 31 30a
• Sunroof module (in front of sunroof, above headliner)
• Sunroof switch
• Sw xprs sig
• Underhood fuse block (left side of engine compartment)
• Vent
• Vnt clos sig
• Vnt open sig
• X14
• Xprs
• Xprs (crew cab)

POWER WINDOWS

Power Windows Wiring Diagram, with AN3/DL3 for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Power Windows Wiring Diagram, with AN3/DL3 for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (crew & extended cab)
• (in right end of dash) junction block (right i/p)
• (upper left corner of dash) g201
• 3b1
• 3b4
• 4a7
• B+ volt
• Body control module (lower left side of dash)
• Door locks system
• Down
• Driver door lock/window switch
• Driver window motor (inside driver's door)
• Fuse block (i/p) (left side of dash)
• G200 (on right front corner of hvac module)
• G303 (on lower left "b" pillar)
• G304 (on lower right "b" pillar)
• Ground
• Hot at all times
• Illumination
• Interior lights system
• Junction block (left i/p) (lower left side of dash)
• Left rear window switch
• Lo spd serial data
• Lo speed serial data
• Logic
• Lr window
• Lt dr circuit breaker 25a
• Passenger door lock/window switch
• Passenger window
• Pwr wnd lockout lr signal
• Pwr wnd lockout rr ctrl
• Pwr wnd lockout rr sig
• Pwr wnd motor lf down ctrl
• Pwr wnd motor lf up ctrl
• Pwr wnd motor lr down ctrl
• Pwr wnd motor lr up ctrl
• 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 lr down signal
• Pwr wnd switch lr up signal
• Pwr wnd switch rr down signal
• Pwr wnd switch rr up signal
• Right rear window switch
• Rr window
• Rt doors circuit breaker cb1 25a
• Splice pack jx221 (in the i/p harness, behind left side of dash)
• Switch power
• W/ individual front seat
• Window down
• Window driver
• Window lockout indicator down
• Window lockout switch
• Window motor (left rear) (in left rear door)
• Window motor (passenger) (inside passenger's door)
• Window motor (right rear) (in right rear door)
• Window switch (left rear)
• Window switch (right rear)
• Window switch passenger
• Window up
• Window up express down window down
• X11

Power Windows Wiring Diagram, without AN3/DL3 for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Power Windows Wiring Diagram, without AN3/DL3 for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in right end of dash) junction block (right i/p)
• 3b4
• Accessory voltage
• B+ volt
• Body control module (lower left side of dash)
• Exprs down
• Fuse block (i/p) (left side of dash)
• 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)
• Ground
• Hot at all times
• Illumination
• Interior lights system
• J231
• J502
• J603
• Junction block (left i/p) (lower left side of dash)
• Left rear window switch
• Logic
• Lr window
• Lt dr circuit breaker 25a
• Passenger window
• Pwr wnd lockout lr signal
• Pwr wnd lockout rr control
• Pwr wnd lockout rr ctrl
• Pwr wnd lockout sig
• Pwr wnd motor lf down ctrl
• Pwr wnd motor lf up ctrl
• Pwr wnd motor lr down ctrl
• Pwr wnd motor lr up ctrl
• 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 lr down sig
• Pwr wnd sw lr up sig
• Pwr wnd sw pass down sig
• Pwr wnd sw pass up sig
• Pwr wnd sw rr down sig
• Pwr wnd sw rr up sig
• Pwr wnd switch lr down signal
• Pwr wnd switch lr up signal
• Pwr wnd switch rr down signal
• Pwr wnd switch rr up signal
• Right rear window switch
• Rr window
• Rt doors circuit breaker cb1 25a
• Tan
• Window down
• Window driver
• Window motor (driver) (inside driver's door)
• Window motor (left rear) (in left rear door)
• Window motor (passenger) (inside passenger's door)
• Window motor (right rear) (in right rear door)
• Window switch
• Window switch (driver)
• Window switch (left rear)
• Window switch (passenger)
• Window switch (right rear)
• Window up
• X11

Sliding Rear Window Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Sliding Rear Window Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (on right front corner of hvac module)
• Acces- sory voltage
• Body control module (bcm) (lower left side of dash)
• Close
• G200
• G304 (except crew cab) (on lower right "b" pillar)
• G307 (crew cab) (at right rear corner of passenger compartment)
• Hot at all times
• Illumi- nation
• Interior lights system
• J323
• J335
• J336
• Junction block (left i/p) (lower left side of dash)
• Open
• Power tops system
• Pwr rear wndw circuit breaker cb4 25a
• Sliding rear window close relay
• Sliding rear window motor (right rear of passenger compartment)
• Sliding rear window open relay
• Tan
• Window switch (sliding rear window)
• X12

RADIO

Radio Wiring Diagram, with Y91 & with UQA (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Radio Wiring Diagram, with Y91 & with UQA (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in overhead console) cellular telephone microphone
• (left front of roof) cellular/ navigation & digital radio antenna
• (lower left side of dash) left i/p junction block
• (pins: 6-16 not used)
• 6.6l
• Amp fuse 41 fuse 38 30a
• Antenna
• Aud sig
• Audio w/ dvd navigation
• Bare
• Cellular/navigation & digital radio antenna (left front of roof)
• Coax
• Computer data lines system
• Digital radio receiver (behind right end of dash)
• Drain wire
• Except 6.6l
• G301 (below left side of passenger's seat)
• Gmlan
• Gmlan+
• Gmlan-
• Grd
• Green led
• Hot at all times
• Info fuse 27 10a
• Interior lights system
• J204
• Keypad sig
• L aud+
• L aud-
• Led cntrl
• 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-
• Rr aud+
• Rr aud-
• Tan
• Underhood fuse block (left side of engine compt)
• Vehicle communication interface module (vcim) (behind center of dash)
• Voice sig
• Voice sig/ tele sig
• W/ gps
• W/o gps
• X12

Radio Wiring Diagram, with Y91 & with UQA (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Radio Wiring Diagram, with Y91 & with UQA (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (left side of center console) noise compensation microphone
• (under rear of center console) audio amplifier
• Amplf+
• Amplf-
• Bare
• Computer data lines system
• Drain wire
• F aud-
• F centr spk+
• F centr spk-
• G301 (below left side of passenger's seat)
• Gmlan
• Grd
• Infrared ref
• Infrared v
• Inside rearview mirror (isrvm)
• J330
• L infrared
• L subwfr-
• Lf aud+
• Lf aud-
• Lf spk+
• Lf spk-
• Lr aud+
• Lr aud-
• Microph volt
• Nca
• Pnk
• R infrared
• R subwfr+
• R subwfr-
• Rear seat audio (rsa) controller
• Rf aud+
• Rf spk+
• Rf spk-
• Rr aud+
• Rr aud-
• Subwfr+
• Subwoofer speaker
• Tan

Radio Wiring Diagram, with Y91 & with UQA (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Radio Wiring Diagram, with Y91 & with UQA (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 3a1
• 3a2
• Ampl+
• Ampl-
• Anti-lock brakes system
• Aud low ref
• Audio/video adapter
• Aux vid h
• Aux video h
• Bare
• Center i/p speaker
• Drain wire
• Dvd aud com
• Dvd aud sh
• Dvd comm
• Dvd+
• Dvd-
• Grd
• I/p fuse block (left side of dash)
• Infrared module (in headliner)
• Infrared+
• Infrared-
• L aud sig
• L aux aud
• L aux vid
• L dvd+
• Left front speaker
• Left front tweeter speaker
• Left rear speaker
• Nca
• Nca b+
• Nca dvd+
• Nca dvd-
• Nca enable sig
• Nca grd
• Nca video cntrl
• Nca video sig
• Pnk
• R aud sig
• R aux aud
• R aux vid
• R dvd+
• Radio
• Right front speaker
• Right front tweeter speaker
• Right i/p junction block (in right end of dash)
• Right rear speaker
• Signal+
• Signal-
• Tan
• Video cntrl
• Video display
• Video sig
• Volt
• Vss

Radio Wiring Diagram, with Y91 & without UQA (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Radio Wiring Diagram, with Y91 & without UQA (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in overhead console) cellular telephone microphone
• (left front of roof) cellular/ navigation & digital radio antenna
• (lower left side of dash) left i/p junction block
• (pins: 6-16 not used)
• 6.6l
• Antenna
• Aud sig
• Audio w/ dvd navigation
• Bare
• Cellular/ navigation & digital radio antenna (left front of roof)
• Coax
• Computer data lines system
• Digital radio receiver
• Drain wire
• Except 6.6l
• G301 (below left side of passenger's seat)
• Gmlan
• Gmlan+
• Gmlan-
• Gnd
• Grd
• Green led
• Hot at all times
• I/p fuse block (left side of dash)
• Info fuse 27 10a
• Interior lights system
• J204
• Keypad sig
• L aud+
• L aud-
• Led cntrl
• 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
• Underhood fuse block (left side of engine compt)
• Vehicle communication interface module (vcim) (behind center of dash)
• Voice sig
• Voice sig/ tele sig
• W/ gps
• W/o gps
• X12

Radio Wiring Diagram, with Y91 & without UQA (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Radio Wiring Diagram, with Y91 & without UQA (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 2a1
• Bare
• 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
• Left i/p junction block x12 (lower left side of dash)
• Nca
• Pnk
• R infrared
• Rear seat audio (rsa) control
• Rear seat ent fuse 16 5a
• Right i/p j/b (in right end of dash)
• Tan
• W/ performance enhanced audio
• W/o performance enhanced audio

Radio Wiring Diagram, with Y91 & without UQA (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Radio Wiring Diagram, with Y91 & without UQA (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (w/ performance enhanced audio) left front tweeter speaker
• (w/ performance enhanced audio) right front tweeter speaker
• 3a1
• Anti-lock brakes system
• Aud low ref
• Audio/video adapter
• Aux vid h
• Aux video h
• Bare
• Drain wire
• Dvd aud com
• Dvd aud sh
• Dvd comm
• Dvd+
• Dvd-
• Gnd
• I/p fuse block (left side of dash)
• Infrared module (in headliner)
• Infrared+
• Infrared-
• L aud sig
• L aux aud
• L aux vid
• L dvd+
• Left front speaker
• Left rear speaker
• Nca
• Nca b+
• Nca dvd+
• Nca dvd-
• Nca enable sig
• Nca gnd
• Nca video cntrl
• Nca video sig
• Pnk
• R aud sig
• R aux aud
• R aux vid
• R dvd+
• Radio
• Right front speaker
• Right rear speaker
• Signal+
• Signal-
• Tan
• Video cntrl
• Video display
• Video sig
• Volt
• Vss

Radio Wiring Diagram, without Y91 & with UQA (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Radio Wiring Diagram, without Y91 & with UQA (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in overhead console) cellular telephone microphone
• (left front of roof) cellular/ navigation & digital radio antenna
• (lower left side of dash) left i/p junction block
• 6.6l
• Amp fuse 41 fuse 38 30a
• Ampl cntrl
• Antenna
• Aud sig
• Audio w/ dvd navigation
• Bare
• Cellular/navigation & digital radio antenna (left front of roof)
• Coax
• Computer data lines system
• Digital radio receiver (behind right end of dash)
• Drain wire
• Except 6.6l
• G301 (below left side of passenger's seat)
• Gmlan
• Gmlan+
• Gmlan-
• Grd
• Green led
• Hot at all times
• Info fuse 27 10a
• Interior lights system
• 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
• Not used
• 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)
• Vehicle communication interface module (vcim) (behind center of dash)
• Voice sig
• W/ gps
• W/o gps
• X12

Radio Wiring Diagram, without Y91 & with UQA (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Radio Wiring Diagram, without Y91 & with UQA (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (under rear of center console) audio amplifier
• 2a1
• Ampl cntrl
• Bare
• Computer data lines system
• Drain wire
• F aud-
• G301 (below left side of passenger's seat)
• Gmlan
• Grd
• 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-
• Lf aud+
• Lf aud-
• Lf spk+
• Lf spk-
• Lr aud+
• Lr aud-
• Nca
• Pnk
• R infrared
• R subwfr+
• R subwfr-
• Rear seat audio (rsa) controller
• Rear seat ent fuse 5a
• Rem enable
• Rf aud+
• Rf spk+
• Rf spk-
• Right i/p j/b (in right end of dash)
• Rr aud
• Rr aud+
• Rr aud-
• Subwoofer speaker
• Tan

Radio Wiring Diagram, without Y91 & with UQA (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Radio Wiring Diagram, without Y91 & with UQA (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 3a1
• 3a2
• Anti-lock brakes system
• Aud low ref
• Audio/video adapter
• Aux vid h
• Aux video h
• Bare
• Drain wire
• Dvd aud com
• Dvd aud sh
• Dvd comm
• Dvd+
• Dvd-
• Grd
• I/p fuse block (left side of dash)
• Infrared module (in headliner)
• Infrared+
• Infrared-
• L aud sig
• L aux aud
• L aux vid
• L dvd+
• Left front speaker
• Left front tweeter speaker
• Left rear speaker
• Nca
• Nca b+
• Nca dvd+
• Nca dvd-
• Nca enable sig
• Nca grd
• Nca video cntrl
• Nca video sig
• Pnk
• R aud sig
• R aux aud
• R aux vid
• R dvd+
• Radio
• Right front speaker
• Right front tweeter speaker
• Right i/p junction block (in right end of dash)
• Right rear speaker
• Signal+
• Signal-
• Tan
• Video cntrl
• Video display
• Video sig
• Volt
• Vss

Radio Wiring Diagram, without Y91 & without UQA (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Radio Wiring Diagram, without Y91 & without UQA (1 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in overhead console) cellular telephone microphone
• (left front of roof) cellular, navigation & digital radio antenna
• (lower left side of dash) left i/p junction block
• (pins: 6-16 not used)
• 6.6l
• Antenna
• Aud sig
• Audio w/ dvd navigation
• Bare
• Cellular/ navigation & digital radio antenna (left front of roof)
• Coax
• Computer data lines system
• Digital radio receiver
• Drain wire
• Except 6.6l
• G301 (below left side of passenger's seat)
• Gmlan
• Gmlan+
• Gmlan-
• Gnd
• Grd
• Green led
• Hot at all times
• I/p fuse block (left side of dash)
• Info fuse 27 10a
• Interior lights system
• 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)
• Vehicle communication interface module (vcim) (behind center of dash)
• Voice sig
• Voice sig/ tele sig
• W/ gps
• W/o gps
• X12

Radio Wiring Diagram, without Y91 & without UQA (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Radio Wiring Diagram, without Y91 & without UQA (2 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 2a1
• Bare
• 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
• Left i/p junction block x12 (lower left side of dash)
• Pnk
• R infrared
• Rear seat audio (rsa) control
• Rear seat ent fuse 16 5a
• Right i/p j/b (in right end of dash)
• Tan
• W/ performance enhanced audio
• W/o performance enhanced audio

Radio Wiring Diagram, without Y91 & without UQA (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Radio Wiring Diagram, without Y91 & without UQA (3 of 3) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (w/ performance enhanced audio) left front tweeter speaker
• (w/ performance enhanced audio) right front tweeter speaker
• Anti-lock brakes system
• Aud low ref
• Audio/video adapter
• Aux vid h
• Aux video h
• Bare
• Drain wire
• Dvd aud com
• Dvd aud sh
• Dvd comm
• Dvd+
• Dvd-
• Gnd
• I/p fuse block (left side of dash)
• Infrared module (in headliner)
• Infrared+
• Infrared-
• L aud sig
• L aux aud
• L aux vid
• L dvd+
• Left front speaker
• Left rear speaker
• Nca
• Nca b+
• Nca dvd+
• Nca dvd-
• Nca enable sig
• Nca gnd
• Nca video cntrl
• Pnk
• R aud sig
• R aux aud
• R aux vid
• R dvd+
• Radio
• Right front speaker
• Right rear speaker
• Signal+
• Signal-
• Tan
• Video cntrl
• Video display
• Video sig
• Volt
• Vss

SHIFT INTERLOCK

Shift Interlock Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Shift Interlock Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (4.3l)
• (except 4.3l)
• (lower left side of dash) left i/p junction block
• (or 2500)
• (or 2501)
• 4-speed a/t
• 4.3l
• 6.6l
• Automatic transmission
• Automatic transmission internal mode switch
• 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 4.3l
• Exterior lights system
• G102 (on lower left front of engine)
• G103 (on front of right cylinder head)
• G106 (right rear of engine)
• G200 (on right front corner of hvac module)
• Gasoline w/ 6-speed a/t
• Gmlan hi-spd (+)
• Gmlan hi-spd (-)
• Gnd
• Hot at all times
• Internal mode switch (ims)
• 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
• Start switch
• Stop lamp switch (top of brake pedal assembly)
• Tan
• Transmission control module (left front of engine compt, near fan shroud)
• Transmissions system
• Underhood fuse block (left side of engine compt)

STARTING/CHARGING

6.0L VIN K

6.0L VIN K, Charging Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.0L VIN K, Charging Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 10 series
• 175a
• 4.3l
• Battery current sensor (right rear of engine compt)
• Body control module (bcm) (lower left side of dash)
• Charge ind sig
• Charge indicator
• Computer data lines system
• Current sply
• Data bus +
• Data bus -
• Driver information center (dic)
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G103 (on front of right cylinder head)
• Generator
• Generator sig
• Hot at all times
• Ign
• Instrument panel cluster
• Ipc fuse 46 10a
• Logic
• Low ref
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Pnk
• Power distribution system
• Red
• Right battery
• Sens sig
• Serial data
• Tan
• Underhood fuse block (left side of engine compt)
• Volt

6.0L VIN K, Starting Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.0L VIN K, Starting Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (on front of right cylinder head) (6.6l) g103
• 175a
• 4 speed a/t
• 4.3l
• 6 speed a/t
• 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)
• Battery
• 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, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G102 (except 4.3l) (on lower left front of engine)
• G103 (except 4.3l) (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)
• Ign
• Ignition switch
• Internal mode switch
• J105
• J106
• J144
• Lock
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Park/ neutral position (pnp) switch (on left rear side of transmission)
• Pnk
• Power distribution system
• Red
• Run
• Start
• Starter motor
• Strt rly ctrl
• Strtr fuse 62 (except 6.6l) fuse 57 (6.6l) 40a
• Strtr relay
• Tan
• Transmission control module (tcm) (left front of engine compt, near fan shroud)
• Underhood fuse block (left side of engine compt)

6.6L VIN 6

6.6L VIN 6, Charging Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.6L VIN 6, Charging Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (in engine chassis harness) (w/ dual generator) j132
• Auxiliary generator (w/ dual generator)
• Charge ind sig
• Charge indicator
• Computer data lines system
• Data bus +
• Data bus -
• Driver information center (dic)
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G103 (on front of right cylinder head)
• Generator
• Generator sig
• Hot at all times
• Ign
• Instrument panel cluster
• Ipc fuse 43 10a
• J4 x4
• Logic
• Mega fuse 175a
• Power distribution system
• Red
• Right battery
• Tan
• Underhood fuse block (left side of engine compt)
• Volt
• W/ dual generator

6.6L VIN 6, Starting Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.6L VIN 6, Starting Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (on front of right cylinder head) (6.6l) g103
• 175a
• 4 speed a/t
• 4.3l
• 6 speed a/t
• 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)
• Battery
• 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, near fan shroud)
• Except 4.3l
• Fuse holder (right side of firewall)
• G101 (on lower right radiator support)
• G102 (except 4.3l) (on lower left front of engine)
• G103 (except 4.3l) (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)
• Ign
• Ignition switch
• Internal mode switch
• J105
• J106
• J144
• Lock
• Mega fuse (right rear of engine compt)
• Mega fuse 175a
• Park/ neutral position (pnp) switch (on left rear side of transmission)
• Pnk
• Power distribution system
• Red
• Run
• Start
• Starter motor
• Strt rly ctrl
• Strtr fuse 62 (except 6.6l) fuse 57 (6.6l) 40a
• Strtr relay
• Tan
• Transmission control module (tcm) (left front of engine compt, near fan shroud)
• Underhood fuse block (left side of engine compt)

SUPPLEMENTAL RESTRAINTS

Supplemental Restraints Wiring Diagram (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Supplemental Restraints Wiring Diagram (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (if equipped)
• (right front corner of driver's seat track) (w/ 10 series) driver inflatable restraint seat position sensor (sps)
• (top right side of dash) inflatable restraint i/p module
• (w/ 10 series) passenger seat belt buckle
• A x1
• A2 x275
• Driver seat belt buckle
• Driver seat belt preten- sioner (on left "b" pillar)
• Driver seat belt sw sig
• Driver seat belt switch
• Driver seat pos sw sig
• Extended cab/ crew cab
• G302 (below right side of passenger's seat)
• I/p mod disable sw sig
• I/p mod stage 1 hi ctrl
• I/p mod stage 1 lo ctrl
• I/p mod stage 2 hi ctrl
• I/p mod stage 2 lo ctrl
• I/p mod suppression ind ctrl
• Ignition 1 voltage
• Inflatable restraint sensing & diagnostic module (under driver's seat)
• Inflatable restraint steering wheel module (in steering x1 wheel)
• Inflatable restraint steering wheel module coil (behind steering wheel)
• Inflatable restraint vehicle rollover sensor (w/ head curtain air bag) (below center console)
• J303 (w/ child presence detector)
• J305 (w/o driver power seat: in driver seat harness, 12.5 cm from driver seat belt buckle) (w/ front individual seat: in driver seat harness, 4 cm in x303 breakout)
• L seat belt pretensnr hi ctrl
• L seat belt pretensnr lo ctrl
• Left front inflatable restraint side impact sensor (in driver's door)
• Left inflatable restraint front end sensor (on lower left radiator support)
• Left rear inflatable restraint side impact sensor (in left rear door)
• Lf discriminating sensor signal
• Lf roof rail mod hi ctrl
• Lf roof rail mod lo ctrl
• Lf side impact sensing mod sig
• Low reference
• Low spd gmlan serial data
• Lr side impact sensing mod sig
• Nca
• Passenger seat belt preten- sioner (on right "b" pillar)
• Passenger seat belt sw sig
• Passenger seat belt switch
• Pin shorting bars engaged when module connector is disconnected from harness (shorting bars are connected between pins: 4-5, 6-7, 8-9, 10-11, 12-13, 14-15, 16-17 & 18-19)
• Pnk
• R seat belt pretensnr hi ctrl
• R seat belt pretensnr lo ctrl
• Rf discriminating sensor signal
• Rf roof rail mod hi ctrl
• Rf roof rail mod lo ctrl
• Rf side impact sensing mod sig
• Right front inflatable restraint side impact sensor (in passenger's door)
• Right inflatable restraint front end sensor (on lower right radiator support)
• Right rear inflatable restraint side impact sensor (in right rear door)
• Rollover sensor high sig
• Rr side impact sensing mod sig
• Shorting bar
• Stage 1
• Stage 2
• Str wheel mod stage 1 hi ctrl
• Str wheel mod stage 1 lo ctrl
• Str wheel mod stage 2 hi ctrl
• Str wheel mod stage 2 lo ctrl
• Tan
• W/ 10 series
• W/o 10 series

Supplemental Restraints Wiring Diagram (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Supplemental Restraints Wiring Diagram (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (under front passenger seat) (w/ child presence detector)
• (w/ inflatable restraint i/p module man suppression & child presence detector) inflatable restraint passenger air bag on/off indicator
• 6.6l (vin 6)
• Air bag batt fuse 45 fuse 42 15a
• Air bag ign fuse 40 fuse 37 10a
• Air bag ind
• Back light ind
• Driver inflatable restraint roof rail module (behind left side of headliner trim)
• Except 6.6l (vin 6)
• Extended cab/ crew cab
• G200 (on right front corner of hvac module)
• G302 (below right side of passenger's seat)
• Hot at all times
• Hot w/ run/crnk relay energized
• Ign
• Inflatable restraint i/p module disable switch (if equipped)
• Inflatable restraint passenger presence system (pps) module
• Inflatable restraint passenger presence system (pps) sensor (in front passenger's seat bottom)
• Instrument panel cluster (ipc)
• J323
• Left i/p junction block (lower left side of dash)
• Lo spd gmlan serial data
• Logic
• Low reference
• Low spd gmlan serial data
• Nca
• Off ind
• On ind
• Pass air bag off ind ctrl
• Pass air bag on ind ctrl
• Pass seat belt ind
• Passenger inflatable restraint roof rail module (behind right side of headliner trim)
• Passenger inflatable restraint seat belt tension sensor
• Passenger seat belt buckle
• Passenger seat belt ind
• Pnk
• Regular cab
• Seat belt ind
• Sensor signal
• Serial data
• Shorting bar
• Splice pack jx221 (in the i/p harness, behind left side of dash)
• Splice pack jx339 (in body harness, below passenger seat)
• Tan
• Underhood fuse block (left side of engine compt)
• Voltage reference
• W/ head curtain air bag
• X1 a1
• X11
• X2 p1
• X4 d4
• X5 g2

TRANSMISSION

Transfer Case Wiring Diagram, 2-Speed Manual for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Transfer Case Wiring Diagram, 2-Speed Manual for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (4.3l)
• (4.8l, 5.3l, 6.ol & 6.2l)
• (diesel)
• (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 & 6.2l
• 4wd ind
• 4wd low sig
• Aux hvac-ign fuse 48 fuse 45 10a
• Axle sw sig
• Computer data lines system
• Diesel
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• 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 -
• Hot w/ run/crnk relay energized
• Ign
• Instrument panel cluster (ipc)
• J105
• J130 (4 speed a/t)
• J220 (w/ steering pnk
• Logic
• Pnk
• 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)
• X2 n4 pnk
• X5 g4

Transfer Case Wiring Diagram, Selectable for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Transfer Case Wiring Diagram, Selectable for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (diesel)
• (gas)
• (in instrument panel harness, in transfer case shift control module connector breakout) j207
• (lower left side of dash) left i/p junction block
• 2 hi ind ctrl
• 2-hi ind
• 2a4
• 4 hi ind ctrl
• 4 lo ind ctrl
• 4-hi ind
• 4-lo ind
• 4.3l
• 4wd ind
• 5 volt
• 6.0l (vin y), 4.3l, 4.8l & 5.3l
• 6.2l & 6.0l (vin k)
• 6.6l
• 8v sply
• Acc wakeup serial data
• Accy wakeup srl data
• Aux hvac-ign fuse 48 fuse 45 10a
• Axle actr ctrl
• Axle sw sig
• Batt +
• Body control module (bcm) (lower left side of dash)
• Computer data lines system
• Diesel
• Dirtn sig
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Except 4.3l & 6.6l
• 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 -
• Gmlan bus-
• Gnd
• Hot at all times
• Hot in acc or run
• Hot w/ run/crnk relay energized
• Ign
• Ign volt
• Incrmt encoder sig
• Instrument panel cluster (ipc)
• Interior lights system
• J104 (in engine harness, 5 cm from engine control module connector breakout)
• 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
• Outside moisture sensor (near inside rearview mirror mount)
• Pnk
• Power distribution system
• Pulse sig
• Right i/p junction block (in right end of dash)
• 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)
• Transmission control module (tcm) (left front of engine compt, near fan shroud)
• Trec fuse 67 fuse 62 30a
• Underhood fuse block (left side of engine compt)
• W/ outside moisture sensor
• W/o outside moisture sensor
• X1 a3 pnk

6.0L VIN K

6.0L VIN K, A/T Wiring Diagram (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.0L VIN K, A/T Wiring Diagram (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 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
• Automatic transmission
• Aux hvac- ign fuse 45 10a
• Batt +
• Brake pedal sig
• Computer data lines system
• Control solenoid valve assembly
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• Exterior lights system
• G4 x5
• Gmlan data bus (+)
• Gmlan data bus (-)
• Gnd
• Hot at all times
• Hot w/ run/crnk relay energized
• Ign
• Ign voltage
• Instrument cluster panel (ipc)
• J104 (in engine harness, 5 cm from engine control module connector breakout)
• J106
• J220 (w/ steering wheel heater)
• Left i/p junction block
• Logic
• Low reference
• Mil ctrl
• Mil ind
• 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
• Pc solenoid high control
• Pnk
• Pnk a3 pnk
• Pnk a4 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 sig
• Replicated tos signal
• Run/crank volt
• 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
• Tow/ haul ind
• Trans ign1 fuse 19 15a
• Transmission control module (tcm)
• Transmission fluid temperature (tft) sensor
• Transmission fluid temperature (tft) sensor signal
• Underhood fuse block (left side of engine compt)

6.0L VIN K, A/T Wiring Diagram (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.0L VIN K, A/T Wiring Diagram (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 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
• A/t manual shift switch
• Acc volt
• Automatic transmission
• Automatic transmission fluid pressure (tfp) manual valve position switch
• Automatic transmission internal mode switch (ims)
• Automatic transmission shift lever
• Body control module (lower left side of dash)
• Computer data lines system
• Control solenoid valve assembly
• 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 -
• Input speed sensor (iss)
• Input speed sensor (iss) signal
• J127
• J216
• J230
• Nca
• Output speed sensor (oss)
• 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/ electronic & auto 4x4
• W/ electronic steering control
• W/o electronic & auto 4x4
• X1 pnk
• X3 tan

6.6L VIN 6

6.6L VIN 6, A/T Wiring Diagram (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.6L VIN 6, A/T Wiring Diagram (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 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 the steering column harness)
• (lower left side of dash) transfer case shift control module
• (on front of right cylinder head) g103
• (top left rear of engine) glow plug control module (gpcm)
• 12v
• A/t iss sig high
• A/t iss sig low
• A/t manual shift switch
• Acc volt
• Acc wakeup srl data
• Automatic transmission
• Automatic transmission shift lever
• B red
• Body control module (bcm) (lower left side of dash)
• Computer data lines system
• Data bus (-)
• Data bus h
• Fld press sw sig 1
• Fld press sw sig 3
• G201 (upper left corner of dash)
• Gmlan data bus (-)
• Gmlan serial data bus +
• Gmlan serial data bus -
• Gnd
• J104
• J106
• J125
• J143
• J216
• J230
• Low ref
• Main
• Nca
• Pc sol vlv hi ctrl
• Pc sol vlv low ctrl
• Pcs1
• Pcs1 low
• Pcs2
• Pnk
• Power take off (pto) module (outside of right front chassis frame)
• Red
• Replicated tos sig
• Ss1
• Ss1 low
• Ss2
• Ss2 low
• Ss3
• Ss3 low
• 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)
• Vss sig high
• Vss sig low
• W/ electronic & auto 4x4
• W/ electronic steering control
• W/o electronic & auto 4x4
• X1 pnk
• X3 tan

6.6L VIN 6, A/T Wiring Diagram (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for 6.6L VIN 6, A/T Wiring Diagram (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (left front of engine compt, near fan shroud) engine control module (ecm)
• (left side of transmission) automatic transmission input shaft speed (at iss) sensor
• (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
• A4 pnk
• Accy wakeup srl data
• Actuator sply volt
• Automatic transmission
• Aux hvac- ign fuse 45 10a
• Batt +
• Computer data lines system
• Data bus (+)
• Data bus (-)
• Exterior lights system
• Fld press sw sig 2
• Fld press sw sig 4
• G103 (on front of right cylinder head)
• G4 x5
• Gmlan data bus (-)
• Gnd
• Hot at all times
• Hot w/ run/crnk relay energized
• Ign
• Ign 1
• Instrument panel cluster (ipc)
• Internal mode switch (ims)
• J106
• J144
• J220 (w/ steering wheel heater)
• Logic
• Main press solenoid
• Mil ctrl
• Mil ind
• Misc ign fuse 40 10a
• P/n
• Park/neutral sig
• Pnk
• Pnk a3
• Power distribution
• Pressure switch manifold (psm)
• Range sw sig a
• Stop lamp switch (top of brake pedal assembly)
• System
• Tan
• Tan e
• Tcc brake sig
• Tcc pcs low
• Tcm-batt fuse 7 15a
• Tft sensor
• Tow/ haul ind
• Trans/ign1 fuse 13 15a
• Transmission control module (left front of engine compt, near fan shroud)
• Turb speed sw sig
• Underhood fuse block (left side of engine compt)
• Vss hi sig

WARNING SYSTEMS

Warning Systems Wiring Diagram, with AN3/DL3 (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Warning Systems Wiring Diagram, with AN3/DL3 (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 3b1
• Auto
• Battery (+)
• Bcm fuse 10a
• Body control module (bcm) (lower left side of dash)
• Computer data lines system
• Crew cab
• Ctsy fuse 15a
• Dim fuse 15a
• Driver door latch assembly (rear of driver's door)
• Driver door lock/ window switch
• G103 (on front of right cylinder head)
• 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 of dash)
• Ign iii
• Is lps fuse 10a
• J201
• Left i/p junction block (lower left side of dash)
• 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 15a
• Off
• Park
• Park brake sw signal
• Passenger door latch assembly (rear of passenger's door)
• Passenger door lock/ window switch
• Pnk
• 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 15a
• Stop lamps fuse 15a
• Tan

Warning Systems Wiring Diagram, with AN3/DL3 (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Warning Systems Wiring Diagram, with AN3/DL3 (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (on master cylinder) brake fluid level switch
• (w/ luxury edition) j204
• Brake ind
• Chime module (center of dash, behind radio)
• Diesel
• Dlis fuse 35 fuse 32 2a
• Driver seat belt buckle
• Driver seat belt sw sig
• Driver seat belt switch
• G201 (upper left corner of dash)
• G301 (below left side of passenger's seat)
• Gas
• 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/o driver adjuster front seat: in driver seat harness, 12.5 cm from driver seat belt buckle) (w/ driver adjuster front seat: in driver seat harness, 4 cm in x303 breakout)
• Key in ignition switch
• Left i/p junction block
• Left i/p junction block (lower left side of dash)
• Lo spd data
• Lo spd gmlan serial data
• Logic
• Low ref
• Low tire pressure ind
• Nca
• Park brake switch (on park brake pedal assembly)
• Pnk
• Radio
• Rdo fuse 42 fuse 39 15a
• Seat belt ind
• Serial data
• Sound systems
• Splice pack jx221 (in the i/p harness, behind left side of dash)
• Splice pack jx339 (in body harness, below passenger seat)
• Underhood fuse block (left side of engine compt)
• W/ radio provisions
• W/o radio provisions
• X12

Warning Systems Wiring Diagram, without AN3/DL3 (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Warning Systems Wiring Diagram, without AN3/DL3 (1 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (upper left corner of dash) g201
• 3a5
• A6 tan
• Auto
• Battery (+)
• Bcm fuse 10a
• Body control module (bcm) (lower left side of dash)
• Computer data lines system
• Crew cab
• Ctsy fuse 15a
• Dim fuse 15a
• Driver door latch assembly (rear of driver's door)
• G103 (on front of right cylinder head)
• 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 of dash)
• Ign iii
• Is lps fuse 20a
• J201
• J502 (w/ power windows)
• J602 (w/ power door lock control)
• Left front door ajar sw
• Left front door open sw
• Left i/p junction block (lower left side of dash)
• Left rear door ajar sw
• Left rear door latch assembly (rear of left rear door)
• Lo spd gmlan serial data
• Lt stop trn fuse 15a
• Off
• Park
• Park brake sw signal
• Passenger door latch assembly (rear of passenger's door)
• Pnk
• 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 15a
• Stop lamps fuse 15a
• Tan
• W/ electric door lock control
• W/o electric door lock control
• X3 b5 tan

Warning Systems Wiring Diagram, without AN3/DL3 (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Warning Systems Wiring Diagram, without AN3/DL3 (2 of 2) for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (on master cylinder) brake fluid level switch
• (w/ luxury edition) j204
• Brake ind
• Chime module (center of dash, behind radio)
• Diesel
• Dlis fuse 35 fuse 32 2a
• Driver seat belt buckle
• Driver seat belt sw sig
• Driver seat belt switch
• G201 (upper left corner of dash)
• G301 (below left side of passenger seat)
• Gas
• 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/o driver adjuster front seat: in driver seat harness, 12.5 cm from driver seat belt buckle) (w/ driver adjuster front seat: in driver seat harness, 4 cm in x303 breakout)
• Key in ignition switch
• Left i/p junction block
• Left i/p junction block (lower left side of dash)
• Lo spd data
• Lo spd gmlan serial data
• Logic
• Low ref
• Low tire pressure ind
• Nca
• Park brake switch (on park brake pedal assembly)
• Pnk
• Radio
• Rdo fuse 42 fuse 39 15a
• Seat belt ind
• Serial data
• Sound systems
• Splice pack jx221 (in the i/p harness, behind left side of dash)
• Splice pack jx339 (in body harness, below passenger seat)
• Underhood fuse block (left side of engine compt)
• W/ radio provisions
• W/o radio provisions
• X12

WIPER/WASHER

Moisture Sensor Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Moisture Sensor Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• 12-volt reference
• 2a2
• 2a3
• 2a4
• 2b6
• Bat pos volt
• Body control module (bcm) (lower left side of dash)
• Front corner of hvac module)
• G103 (on front of right cylinder head)
• G200 (on right
• Ground
• Hot at all times
• I/p fuse block (left side of dash)
• Ign
• Ign volt
• J203
• Outside moisture sensor signal
• Outside moisture sig 1
• Outside moisture sig 2
• Right i/p junction block (in right end of dash)
• Rt stop trn fuse 15a
• Tan
• Transfer case shift control switch (on top left of transfer case)
• W/ 10 series
• W/ 10 series, auto 4x4 & electronic 4x4
• Windshield ouside moisture sensor (near inside rearview mirror mount)

Windshield Washer Solvent Heater Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Windshield Washer Solvent Heater Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• Bat pos volt
• Body control module (bcm) (lower left side of dash)
• G110 (left side of firewall)
• G201 (upper left corner of dash)
• Gnd
• Hot at all times
• I/p multi-function switch
• Ign iii
• Ignition 3 volt
• Interior lights system
• J201
• Left i/p junction block (lower left side of dash)
• Nca
• Pnk
• Underhood fuse block (left side of engine compt)
• Washer fld htd ctrl sw
• Washer fluid heater control switch led
• Windshield washer solvent heater (left rear corner of engine compt)
• Windshield washer solvent heater switch
• Windshield washer sw sig
• Wiper/ washer circuit
• Wndshld washer sw sig
• Wsw/htr fuse 66 (except 6.6l) fuse 61 (6.6l) 60a
• X1 e1

Wiper/Washer Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500

List of elements for Wiper/Washer Wiring Diagram for Chevrolet Cab & Chassis Silverado HD 2008 3500:

• (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)
• Driver information center (dic)
• Front washer diode
• Frt wash fuse 8 (except 6.6l) fuse 7 (6.6l) 15a
• Frt wash pcb relay
• Frt wpr fuse 36 (except 6.6l) wpr fuse 33 (6.6l) 25a
• G100 (on lower left radiator support)
• G101 (on lower right radiator support)
• G102 (4.8l, 5.3l, 6.0l & 6.2l) (on lower left front of engine)
• G201 (upper
• Hot at all times
• I/p fuse block (left side of dash)
• Instrument panel cluster (ipc)
• Int
• J100
• J101
• J105
• Left corner of dash)
• Left i/p junction block (lower left side of dash)
• Lo d4
• Logic
• Low ref
• Low washer fluid ind ctrl
• Mist
• Mtr park sw sig
• Nca
• Off
• Pnk
• Rt stop trn fuse 15a
• Tan
• Turn signal/ multi-function switch
• Underhood fuse block (left side of engine compt)
• W/ denso
• W/o denso
• 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 washer solvent heater (left rear corner of engine compt)
• Windshield wiper motor (under windshield cowl, between wiper arms)
• 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