AIR CONDITIONING
Automatic A/C Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2004 3500
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Automotive Electricians Portal FZCO
Automotive Electricians Portal FZCO List of elements for Automatic A/C Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- (6.6l vin 1)
- (6.6l vin 2)
- (gasoline)
- 5v ref
- A/c comp cl rly ctrl
- A/c comp fuse 10a
- A/c compressor clutch
- A/c compressor clutch relay
- A/c low pressure switch (right side of accumulator)
- A/c on
- A/c recirc
- A/c ref pre sens sig
- A/c refrigerant pressure sensor (in high side pressure line)
- A10
- A11
- A12
- A5 c1
- Amb air temp sig
- Ambient air temperature sensor (in right front bumper filler assembly
- Auto
- B c5
- B(+)
- B10
- B11
- B12
- Blower fuse 40a
- Blower motor (right side of dash)
- Blower motor control processor (behind right side of dash)
- Blower speed ctrl
- C4 e
- C5 c1
- Class 2 ser data
- Class 2 serial data
- Fan dn
- Fan up
- Frt def
- G104 (on left rear of engine block)
- G200 (near right "a" pillar)
- G200 (near right side of dash, "a" pillar)
- G203 (near left "a" pillar)
- Ground
- Hot at all times
- Hot in run
- Hot in run or start
- Hvac 1 fuse 10a
- Hvac control module (behind center of dash)
- Hvac/ ecas fuse 10a
- I/p relay block (left side of dash)
- Ign 3
- Ign e fuse 10a
- Inside air temp sig
- Inside air temperature sensor assembly (in headliner above driver)
- Inst lamp dim ctrl
- Interior lights system
- Left i/p fuse block (lower left side of dash)
- Left temp control
- Lo lt air temp sig
- Lo press sens sig
- Lo rt air temp sig
- Logic
- Low ref
- Lower left air temperature sensor (left end of hvac module)
- Lower right air temperature sensor (bottom of hvac module)
- Lt temp door ctrl
- Mode
- Mode door ctrl
- Off
- Powertrain control module or engine control module (left front of engine compt)
- Recir
- Recir door ctrl
- Recirc door po sig
- Red
- Right i/p fuse block (lower right side of dash)
- Right temp control
- Rt temp door ctrl
- S102 (in engine harness)
- S218 (in i/p harn)
- S345
- Sp205 (in i/p harn)
- Speed ctrl
- Tan
- Temp sen ass ctrl
- Underhood fuse block (left side of engine compt, near battery)
- Up lt air temp sig
- Up rt air temp sig
- Upper left air temperature sensor (below dash trim panel)
- Upper right air temperature sensor (below dash trim panel)
Automatic A/C Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Automatic A/C Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- Ambient light sens lo ref
- Ambient light sens sig
- Ambient light sensor
- B12
- Body control module (lower left side of dash, below steering column)
- Class 2 serial data
- Left air temperature actuator (bottom of hvac module)
- Left solar sensor
- Left sunload sensor sig
- Logic
- Mode actuator (left side of hvac module)
- Recirculation actuator (upper right of hvac module)
- Right air temperature actuator (top of hvac module)
- Right i/p fuse block (lower right side of dash)
- Right solar sensor
- Right sunload sensor sig
- Sunload sensor assembly (top center of dash)
- Tan
Compressor Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Compressor Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- (6.6l vin 1)
- (6.6l vin 2)
- (gasoline)
- 5v ref
- A/c comp cl rly ctrl
- A/c comp fuse 10a
- A/c compressor clutch
- A/c compressor clutch relay
- A/c low pressure switch (right side of accumulator)
- A/c on switch
- A/c ref pre sens sig
- A/c refrigerant pressure sensor (in high side pressure line)
- A12
- B11
- Class 2 ser data
- Class 2 serial data
- G104 (on left rear of engine compt)
- Hot at all times
- Hot in run or start
- Hvac control module (behind center of dash)
- Ign e fuse 10a
- Lo press sens sig
- Logic
- Low ref
- Powertrain control module or engine control module (left front of engine compt)
- Sp205 (in i/p harn)
- Underhood fuse block (left side of engine compt, near battery)
Heater Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Heater Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- 87a
- B c5
- Blower fuse 40a
- Blower motor (under right side of dash)
- Blower motor control switch
- Blower motor relay
- Blower motor resistor assembly (on hvac module, near blower motor)
- G200 (near right "a" pillar)
- Hot at all times
- Hot in run
- Htr a/c fuse 30a
- Hvac control module (behind center of dash)
- Left i/p fuse block (lower left side of dash)
- Off
- Red
- Right i/p fuse block (lower right side of dash)
- Tan
- Underhood fuse block (left side of engine compt, near battery)
Manual A/C Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Manual A/C Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- (6.6l vin 1)
- (6.6l vin 2)
- (gasoline)
- 5v ref
- 87a
- A/c comp cl rly ctrl
- A/c comp fuse 10a
- A/c compressor clutch
- A/c compressor clutch relay
- A/c low pressure switch (right side of accumulator)
- A/c on switch
- A/c recirc
- A/c ref pre sens sig
- A/c refrigerant pressure sensor (in high side pressure line)
- A10
- A11
- A12
- A5 c1
- B c5
- B(+)
- B10
- B11
- B12
- Blower fuse 40a
- Blower motor (under right side of dash)
- Blower motor control switch
- Blower motor relay
- Blower motor resistor assembly (on hvac module, near blower motor)
- Class 2 ser data
- Class 2 serial data
- Frt def
- G104 (on left rear of engine block)
- G200 (near right "a" pillar)
- G203 (near left "a" pillar)
- Ground
- Hot at all times
- Hot in run
- Hot in run or start
- Htr a/c fuse 30a
- Hvac 1 fuse 10a
- Hvac control module (behind center of dash)
- Hvac/ ecas fuse 10a
- I/p relay block (left side of dash)
- Ign 3
- Ign e fuse 10a
- Inst lamp dim ctrl
- Interior lights system
- Left i/p fuse block (lower left side of dash)
- Left temp control
- Lo press sens sig
- Logic
- Low ref
- Lt temp door ctrl
- Mode control
- Mode door ctrl
- Off
- Off blow mt ctrl
- Powertrain control module or engine control module (left front of engine compt)
- Recir door ctrl
- Recirc switch
- Red
- Right i/p fuse block (lower right side of dash)
- Right temp control
- Rt temp door ctrl
- S102 (in engine harness)
- Sp205 (in i/p harn)
- Tan
- Underhood fuse block (left side of engine compt, near battery)
Manual A/C Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Manual A/C Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- (not used)
- B12
- Body control module (lower left side of dash, below steering column)
- Class 2 serial data
- G200 (near right "a" pillar)
- Left air temperature actuator (bottom of hvac module)
- Logic
- Mode actuator (left side of hvac module)
- Recirculation actuator (upper right of hvac module)
- Right air temperature actuator (top of hvac module)
- Right i/p fuse block (lower right side of dash)
- Tan
ANTI-LOCK BRAKES
Anti-lock Brakes Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Anti-lock Brakes Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- (6.6l vin 1)
- (6.6l vin 2)
- (gas)
- (not used)
- A10
- Abs fuse 60a
- Anti-lock ind
- B1 c3
- B10
- Brake fluid level sw in
- Brake fluid level switch (on left side of brake fluid reservoir)
- Brake fuse 10a
- Brake ind
- Brake input
- C12
- C2 b7
- C9 a
- Clutch start switch (m/t) (top of clutch clutch assy)
- Cpp sw sig
- Data link connector (dlc) (below steering column)
- E6 c1
- Electronic brake control module (ebcm) (on left side of inner frame)
- Except seo
- Front axle act/sw input
- G104 (gas) g106 (diesel) (gas: left rear of eng block, diesel: right front of eng block)
- G110 (left front body mount)
- Hot at all times
- Hot in run
- Hot in run or start
- Ign e fuse 10a
- Ignition
- Instrument cluster
- Left front sensor (+)
- Left front sensor (-)
- Left front wheel speed sensor
- Left i/p fuse block (on lower left side of dash)
- Logic
- Nca
- Pnk
- Powertrain or engine control module (pcm or ecm) (on left front of eng compt)
- Red
- Right front sensor (+)
- Right front sensor (-)
- Right front wheel speed sensor
- S102
- Seo
- Seo ign fuse 10a
- Serial data
- Sp205 (in i/p harness)
- Stoplamp switch (on top of brake pedal bracket)
- Tan
- Tcc brake sw
- Transfer case shift control module
- Transmissions system
- Transmissions system (transfer case circuit)
- Underhood fuse block (at left side of engine compt)
- Vehicle speed sensor (vss) (4wd: on left side of transfer case, 2wd: right rear of transmission)
- Vss high
- Vss input
- Vss low
- Vss output
ANTI-THEFT
Forced Entry Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Forced Entry Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- (inside driver door)
- (inside right front passenger door)
- (lower left side of dash, near steering column)
- A12
- Ajar sw
- All times
- B12
- Base
- Battery
- Body control module
- D12
- Door ajar sw sig
- Door sw lo ref
- Driver door module
- Driver mini-wedge door jamb switch (rear of driver's door)
- Exterior lights system
- Front passenger door module
- Front passenger mini-wedge door jamb switch (rear of right front door)
- G200 (behind right side of dash)
- G203 (near left "a" pillar)
- G305 (bottom of left "b" pillar)
- G306 (bottom of right "b" pillar)
- Ground
- Headlights ctrl
- Headlights system
- Horn rly ctrl
- Horns system
- Hot at
- I/p relay block (near left kick panel)
- Key sw
- Key sw lo ref
- Key sw sig
- Left i/p fuse block (lower left side of dash)
- Left rear mini-wedge door jamb switch (crew cab) (rear or left rear door)
- Lf door ajar sw
- Lr door ajar sw
- Pk lamp rel
- Rf door ajar sw
- Right i/p fuse block (lower right side of dash)
- Right rear mini-wedge door jamb switch (crew cab) (rear or right rear door)
- Rr door ajar sw
- Serial data
- Splice pack sp205 (in i/p harness)
- Tan
- Tbc batt fuse 10a
- Underhood fuse block (left side of eng compt)
- Uplevel
Passlock Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Passlock Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- 12v reference
- A11
- A12
- B12
- Battery
- Body control module (lower left side of dash, near steering column)
- Class 2 serial data
- D12
- Data
- Data link connector (under left side of dash)
- Except 6.6l vin 2 6.6l vin 2
- G203 (near left "a" pillar)
- Ground
- Hot at all times
- Hot in run & start
- I/p relay block (near left kick panel)
- Ign
- Ign 1 voltage
- Ign sw sig
- Ignition key alarm switch (on ignition key cylinder)
- Instrument panel cluster
- Key
- Lock cylinder
- Low reference
- Magnet
- Passlock sensor (internal to steering column)
- Pnk
- Powertrain control module (pcm) or engine conrtrol module (ecm) (on left front of engine compt)
- S217 (in steering column harness)
- Sec sens sig
- Security indicator
- Security sensor
- Serial data
- Splice pack sp205 (in i/p harn)
- Tamper sensor
- Tbc batt fuse 10a
- Tbc ign 1 fuse 10a
- Underhood fuse block (left side of eng compt)
BODY CONTROL MODULES
Body Control Modules Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Body Control Modules Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- (base) (upper level)
- (bsae)
- (upper level)
- 12 volt ref
- A10
- A11
- A12
- Ambient light sens sig
- Ambient light sensor
- Ambient light sensor (top center of dash)
- Anti-lock brakes system
- Anti-theft system
- B10
- B11
- B12
- Battery +
- Body control module (on lower left side of dash, below steering column)
- Class 2 serial data
- Computer data lines system
- D12
- Defogger system
- Dimming input/courtesy lmp pwm
- Dimming potentiometer 5volt ref
- Door locks system
- Driver door unlock rly ctrl
- Driver sunload sens sig
- Drl off ind
- Drl relay ctrl
- Drl sw sig
- E11
- E12
- Exterior lights system
- Fog light relay ctrl
- Front fog lamp sw sig
- G203 (behind left side of dash, near "a" pillar)
- Ground
- Ground distribution system
- Headlamp high beam relay ctrl
- Headlamp low beam relay ctrl
- Headlights system
- Horn rly ctrl
- Horns system
- Hot at all times
- I/p lamp dinning ctrl
- I/p relay block
- Interior lamp defeat sw sig
- Interior lights system
- L solar sensor
- Led dimming sig
- Left i/p fuse block
- Low ref
- Park lamp relay ctrl
- Park lamp sw on sig
- Pass door lock sw lock ctrl
- Pass door lock sw unlock ctrl
- Passenger sunload sens sig
- Pnk
- Power distribution system
- Power tops system
- R solar sensor
- Rear defog rly ctrl
- Red
- Remote radio ctrl sig
- Security system sens sig
- Sound system
- Steering wheel position sen sig
- Sunload sensor
- Tbc 2a fuse 15a
- Tbc 2c fuse 15a
- Tbc batt fuse 10a
- Tow/haul sw sig
- Tow/haul switch
- Underhood fuse block
- W/ automatic a/c
- W/ manual a/c
Body Control Modules Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Body Control Modules Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- (base)
- (crew cab)
- (up level)
- A10
- A11
- Accessory volt
- B11
- B12
- Backup lamp sig
- Battery +
- Body control module (on lower left side of dash, below steering column)
- Cargo lamp low ctrl
- Courtesy lamps on sig
- Door lock ctrl
- Door locks system
- Door unlock ctrl
- Exterior lights system
- Headlamp sw flash to pass sig
- Headlamp sw headlamp on sig
- Headlights system
- Hot at all times
- Hot in run & acc
- Hot in run & start
- Hot in run, start & acc
- I/p lamps dimmer sw low ref
- Ignition 0 volt
- Ignition 1 volt
- Interior lights system
- Key in ignition sw sig
- Left front door ajar sw sig
- Left i/p fuse block
- Left rear door ajar sw sig
- Low ref
- Park brake sw sig
- Park brake switch (part of park brake assembly)
- Pnk
- Power window lockout lr sig
- Power window lockout rr sig
- Power window sw lr down sig
- Power window sw lr up sig
- Power window sw rr down sig
- Power window sw rr up sig
- Power windows system
- Right front door ajar sw sig
- Right rear door ajar sw sig
- Tbc 2b fuse 15a
- Tbc accy fuse 10a
- Tbc ign 0 fuse 10a
- Tbc ign 1 fuse 10a
- Underhood fuse block
- Warnings system
COMPUTER DATA LINES
Computer Data Lines Wiring Diagram, Base & Up-Level for GMC Cab & Chassis Sierra 2004 3500
List of elements for Computer Data Lines Wiring Diagram, Base & Up-Level for GMC Cab & Chassis Sierra 2004 3500:
- (10/20 series)
- (30 series)
- (not used)
- B11
- B12
- Body control module (on lower left side of dash, below steering column)
- Cig ltr fuse 15a
- Data link connector (dlc) (under left side of dash, below steering column)
- Digital radio receiver (behind center of dash)
- Driver door module (ddm) (in left front door)
- Electronic brake control module (ebcm) (on left side of inner frame)
- Except 6.6l vin 2 6.6l vin 2
- Front passenger door module (fpdm) (in right front door)
- G200 (near right "a" pillar)
- G203 (near left "a" pillar)
- Ground distribution system
- Hot at all times
- Hvac control module (behind center of dash)
- I/p relay block (under left side of dash, near kick panel)
- Inflatable restraint sensing/diagnostic module (under left front seat)
- Instrument panel cluster (ipc)
- Left i/p fuse block (under left side of dash)
- Memory seat module (underside of driver seat)
- Pnk
- Power distribution system
- Powertrain control module (pcm)/engine control module (ecm) (on left front of engine compt)
- Radio (at center of dash)
- Rear seat audio (rsa) controller (under rear of center console)
- Rear seat entertainment (rse) assembly (at center of headliner)
- Rear wheel steering control module (at left rear of vehicle, near spare tire bracket)
- Remote playback device-cd player (center of dash, below radio)
- Right i/p fuse block (under right side of dash)
- S202
- Sp205 (in i/p harness)
- Sp207 (left side of dash)
- Tan
- Transfer case shift control module (behind headlamp switch)
- Transmission control module (at left front of eng compt)
- Underhood fuse block (at left side of engine compt, near battery)
- Vehicle communication interface module (vcim) (behind passenger air bag module)
Computer Data Lines Wiring Diagram, Luxury for GMC Cab & Chassis Sierra 2004 3500
List of elements for Computer Data Lines Wiring Diagram, Luxury for GMC Cab & Chassis Sierra 2004 3500:
- (10/20 series)
- (30 series)
- (not used)
- Audio amplifier (under rear of center console)
- B10
- B11
- B12
- Body control module (on lower left side of dash, below steering column)
- Cig ltr fuse 15a
- Data link connector (dlc) (under left side of dash, below steering column)
- Digital radio receiver (behind center of dash)
- Driver door module (ddm) (in left front door)
- Electronic brake control module (ebcm) (on left side of inner frame)
- Except 6.6l vin 2 6.6l vin 2
- Front passenger door module (fpdm) (in right front door)
- G200 (near right "a" pillar)
- G203 (near left "a" pillar)
- Ground distribution system
- Hot at all times
- Hvac control module (behind center of dash)
- I/p relay block (under left side of dash, near kick panel)
- Inflatable restraint sensing/diagnostic module (under left front seat)
- Instrument panel cluster (ipc)
- Left i/p fuse block (under left side of dash)
- Memory seat module (underside of driver seat)
- Pnk
- Power distribution system
- Powertrain control module (pcm)/engine control module (ecm) (on left front of engine compt)
- Radio (at center of dash)
- Rear seat audio (rsa) controller (under rear of center console)
- Rear seat entertainment (rse) assembly (at center of headliner)
- Rear wheel steering control module (at left rear of vehicle, near spare tire bracket)
- Remote playback device-cd player (at center of dash, below radio)
- Right i/p fuse block (under right side of dash)
- S202
- Sp205 (in i/p harness)
- Sp207 (left side of dash)
- Tan
- Transfer case shift control module (behind headlamp switch)
- Transmission control module (at left front of eng compt)
- Underhood fuse block (at left side of engine compt, near battery)
- Vehicle communication interface module (vcim) (behind passenger air bag module)
CRUISE CONTROL
6.6L VIN 2
6.6L VIN 2, Cruise Control Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for 6.6L VIN 2, Cruise Control Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- A10
- Brake fuse 10a
- C12
- Class 2 data
- Clutch pedal position switch (m/t) (top of clutch pedal)
- Computer data lines system
- Cpp sw
- Cruise control on/off switch
- Cruise fuse 10a
- Cruise ind
- Cruise on input
- Cruise release sw
- Engine control module (left front of engine compt)
- Hot in run
- I/p relay block (left of steering column)
- Ign
- Instrument panel cluster
- Left i/p fuse block (on lower left side of dash)
- Nca
- Off
- Radio
- Rear wheel steering control module (if equipped) (at left rear of vehicle)
- Resume/ accel
- Resume/accel
- Resume/accel sw
- S162 (w/ pto) (i/p harn)
- S240
- Serial data
- Set/ coast
- Set/coast sw
- Stoplamp switch (top of brake pedal)
- Turn signal multifunction switch
- Underhood fuse block
- Veh stop fuse 15a
- Vehicle speed sensor (vss) (m/t) (2wd: left side of transmission) (4wd: left side of transfer case)
- Vss high
- Vss low
- Vss sig
DEFOGGERS
Heated Mirrors Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Heated Mirrors Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- A7 c1
- B11
- Battery
- Computer data lines system
- Ddm fuse 15a
- Driver door module (ddm) (in driver's door)
- Driver outside rearview mirror
- F c3
- Front passenger door module (fpdm) (in right front door)
- G200 (near right "a" pillar)
- Ground
- Hot at all times
- Hvac control module (in center of dash)
- Left i/p fuse block (lower left side of dash)
- Low ref
- Passenger outside rearview mirror
- Pdm fuse 10a
- R def
- Rear defog switch
- Right i/p fuse block (lower right side of dash)
- S202
- Serial data
- Tan
Rear Defogger Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Rear Defogger Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- (except crewcab: right "b" pillar) (crewcab: near left "c" pillar)
- A c1
- A c2
- A6 c1
- B11
- B12
- Body control module (on lower left side of dash)
- Computer data lines system
- G306 (except crewcab) g390 (crewcab)
- Hot at all times
- Hot in run & start
- Htr
- Hvac control module (in center of dash)
- I/p relay block (near left kick panel)
- Ign
- L c10
- Logic
- Rear defog switch
- Rear defogger relay
- Rear window defogger grid
- Relay cntrl
- Serial data
ELECTRONIC POWER STEERING
Electronic Power Steering Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Electronic Power Steering Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- 12v ref
- 2ws ind ctrl
- 4ws fuse 15a
- 4ws ind ctrl
- 5 volt ref
- 5v ref
- B+ volt
- B11
- Base
- Body control module (on lower left side of dash, below steering column)
- C1 b5
- C1 c5
- Case gnd
- Case ground
- Combination yaw rate sensor/lateral accelerometer sensor (under front passenger seat)
- Computer data lines system
- Cruise fuse 10a
- D12
- G101
- G203 (near left "a" pillar)
- Gnd
- Hall a sig
- Hall b sig
- Hall c sig
- Hot at all times
- Hot in run
- I/p relay block (lower left side of dash)
- Ign 3 fuse 10a
- Ign 3 volt
- Instrument cluster system
- Interior lights system
- Lat accel sig
- Left i/p fuse block
- Low ref
- Mega fuse 125a
- Mode ind ctrl
- Mode sw sig
- Phase a ctrl
- Phase b ctrl
- Phase c ctrl
- Pnk
- Pos 1 sig
- Pos 2 sig
- Pos a sig
- Pos b sig
- Power distribution system
- Pulse sig
- Rear wheel position sensor (left rear of vehicle)
- Rear wheel steering control module (near spare tire bracket)
- Rear wheel steering mode select switch
- Red
- Rly gnd
- Rly volt
- S212 (in i/p harness)
- S240 (in steering pnk column harness)
- S241 (in steering column harness)
- Sens gnd
- Sens ref
- Sens sig
- Serial data
- Steering gear motor assembly (near spare tire bracket)
- Steering wheel speed/ position sensor (on steering column)
- Tan
- Tan c
- Underhood fuse block
- Underhood fuse holder
- Vss
- Yaw sens sig
ELECTRONIC SUSPENSION
Electronic Suspension Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Electronic Suspension Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- (on spare tire hoist bracket) g401
- (w/ heavy duty: left side of fuel tank) (w/o heavy duty: left front body mount) g302
- G200 (near right "a" pillar)
- Hot in run and start
- I/p relay block
- I/p relay block (near left kick panel)
- Left front shock absorber solenoid (part of left front shock)
- Left rear shock absorber solenoid (part of left rear shock)
- Normal/ firm
- Pnk
- Right front shock absorber solenoid (part of right front shock)
- Right rear shock absorber solenoid (part of right rear shock)
- S140
- S202
- Selectable ride switch
- Seo ign fuse 10a
- Underhood fuse block (left side of engine compt)
ENGINE PERFORMANCE
6.6L VIN 2
6.6L VIN 2, Engine Performance Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra 2004 3500
List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (1 of 6) for GMC Cab & Chassis Sierra 2004 3500:
- (in eng harness) s148
- (on left rear side of engine block) engine oil pressure (eop) sensor
- 12v ref
- 4wd low sig
- 5v ref
- A/c system
- Apps 1 sig
- Apps 3 sig
- Baro sen
- Charge ind
- Chmsl sply
- Cool lev sw
- Coolant level switch (in coolant reservoir)
- Cruise control system
- D pnk
- Ect sen
- Egr mtr hi
- Egr mtr lo
- Egr mtr low
- Eng spd sig
- Engine control module (left front of engine compt)
- Engine coolant temperature sensor (top front of engine)
- Engine oil level switch (left rear of oil pan)
- Exhaust gas recirculation (egr) valve
- Frp sen sig
- Fuel tmp sig
- G102 (on right side of engine block)
- G103 (right rear of engine block)
- G104 (lower left side of engine)
- G108 (lower left side of engine)
- Gen 2 trn on
- Gnd
- Inj 1
- Inj 2
- Inj 3
- Inj 4
- Inj 5
- Inj 6
- Inj 7
- Inj 8
- Instrument cluster system
- Low ref
- Oil press sen
- Oil press sw
- S102
- S103
- S147
- Starting/ charging system
- Tan
- Tbs sig
- Tcc brk sw
- Tran mil ind
- Transmissions system
- Turbocharger vane position control solenoid valve
- Tvp sen
- Tvp sol vlv
- Water in fuel sensor (on fuel filter element)
- Wif ind
6.6L VIN 2, Engine Performance Wiring Diagram (2 of 6) for GMC Cab & Chassis Sierra 2004 3500
List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (2 of 6) for GMC Cab & Chassis Sierra 2004 3500:
- Accelerator pedal position sensor (behind accelerator pedal)
- Battery 175a
- Closed below 8 deg c (46 deg f)
- Computer data lines system
- Ecmprv fuse 15a
- Edu/ ign1 relay
- F/ pump relay
- Fuel heater (top of fuel filter element)
- Fuel ht fuse 15a
- Fuel pump (left side frame rail)
- Fuse holder
- G104 (lower left side of engine)
- G108 (lower left side of engine)
- G109 (left side of engine block)
- G110 (left front body mount)
- Glow plug 1
- Glow plug 2
- Glow plug 3
- Glow plug 4
- Glow plug 5
- Glow plug 6
- Glow plug 7
- Glow plug 8
- Glow plug controller
- Glow plugs
- Ground
- Hb03
- Hb11
- Hb12
- Hb13
- Hb14
- Hb15
- Hb16
- Hb17
- Hb18
- Hot at all times
- Hot in run & start
- Ign 1 vltg
- Nca
- Pcm b fuse 20a
- Pnk
- Red
- S102
- S127
- Ser data +
- Ser data -
- Tan
- Under- hood fuse block
6.6L VIN 2, Engine Performance Wiring Diagram (3 of 6) for GMC Cab & Chassis Sierra 2004 3500
List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (3 of 6) for GMC Cab & Chassis Sierra 2004 3500:
- (on right side of engine block) g102
- 12v ref
- 5v ref
- A/c
- Abs system
- Apps 2 sig
- Body relay block
- Brake fuse 10a
- C12
- Class 2 data
- Clutch pedal position switch (top of pedal bracket)
- Computer data lines system
- Crank fuse 10a
- E11
- Ecm 1 fuse 15a
- Egr vlv pos
- Engine control module (left front of engine compt)
- Ficm rly ctrl
- Fp reg sol
- Fuel lev sen
- Fuel pmp rly
- Fuel pressure regulator
- G103 (on right rear of engine block)
- Gen fdc dig
- Gnd
- Hot in off, run & start
- Hot in run
- Hot in run & start
- Hot in start
- I/p fuse block
- Ign vlt
- Ign 0 fuse 10a c1
- Ign 0 vlt
- Ign 1 vlt
- Instrument cluster system
- Low ref
- Maf sens
- Nca
- Pnk
- Red
- S103
- S141
- S142
- S143
- S144
- S174
- Ser data +
- Ser data -
- Starting/charging system
- Stoplamp switch (top of brake pedal bracket)
- System
- Tan
- Under- hood fuse block
- Vss
- Wts ind
6.6L VIN 2, Engine Performance Wiring Diagram (4 of 6) for GMC Cab & Chassis Sierra 2004 3500
List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (4 of 6) for GMC Cab & Chassis Sierra 2004 3500:
- (in engine harn,
- (in engine harn, approx 13 cm (5.12 in) from left fuel injector bank breakout)
- (in forward lamp harn, approx 5 cm (1.97 in) from c104 breakout)
- (left side of engine block)
- (pins 49-58 not used)
- (pins 6-43 not used)
- (pins 68-81 not used)
- (pins 82-89 not used)
- (pins 95-113 not used)
- (right rear of engine block)
- Approx 10.16 cm (4 in) from fuel injector control module c1 breakout)
- Approx 12.7 cm (5 in) from fuel injector control module c1 breakout)
- Can hi
- Can low
- Computer data lines system
- Engine spd
- Fuel injector control module (under air intake duct)
- Fuel injectors
- Fuel rail pressure sensor (under intake manifold shield, on fuel rail)
- G103
- G109
- Ground
- Hot w/ edu relay energized
- Ic13
- Ic15
- Ic16
- Ic17
- Ic18
- Ic19
- Ic20
- Ic21
- Ic22
- Ic520
- Ic521
- Ic60
- Ign
- Ign 1 vltg
- Ign 2,3,5,8
- Inj 1 ctrl
- Inj 2 ctrl
- Inj 3 ctrl
- Inj 4 ctrl
- Inj 5 ctrl
- Inj 6 ctrl
- Inj 7 ctrl
- Inj 8 ctrl
- Inj1 command
- Inj2 command
- Inj3 command
- Inj4 command
- Inj5 command'
- Inj6 command
- Inj7 command
- Inj8 command
- Injb fuse 25a
- Iz17
- Iz18
- Nca
- Pnk
- Red
- S166
- S167
- S168
- S169
- S171
- S175
- S176
- Tan
- Underhood fuse block
6.6L VIN 2, Engine Performance Wiring Diagram (5 of 6) for GMC Cab & Chassis Sierra 2004 3500
List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (5 of 6) for GMC Cab & Chassis Sierra 2004 3500:
- (in engine harness)
- (near right "a" pillar) g200
- Baro sensor (left side of engine)
- Boost pressure sensor (right side of engine)
- Crankshaft position sensor (right side of engine)
- Cruise control system
- Cruise fuse 10a
- Fog lp fuse 15a
- G109 (on left side of engine block)
- Hot in run
- Hot in run & start
- I/p fuse block
- Ind logic
- Intake air temperature (iat)/ mass airflow (maf) sensor (in air induction tube)
- Interior lights system
- Nca
- Off
- Pnk
- Power take off relay (near underhood fuse block)
- Power take off switch
- Red
- S163
- S177
- S205
- S224
- Set
- Tan
- Turbochanger vane position sensor
- Underhood fuse block
6.6L VIN 2, Engine Performance Wiring Diagram (6 of 6) for GMC Cab & Chassis Sierra 2004 3500
List of elements for 6.6L VIN 2, Engine Performance Wiring Diagram (6 of 6) for GMC Cab & Chassis Sierra 2004 3500:
- (m/t)
- (on right side of engine block) g102
- 5-speed a/t
- 6-speed m/t
- A/c comp rly
- A/c system
- B/u lamp sply
- B11
- Camshaft position sensor (front of engine)
- Ckp sen sig
- Computer data lines system
- Cpp sw sig
- Crank vltg
- Cruise control system
- Cruise on sig
- Eng spd sig
- Engine control module (left front of engine compt)
- Exc seo
- Exterior lights system
- Frnt axle sw sig
- Fuel temperature sensor
- G103 (on right rear of engine block)
- Hot at all times
- Iat sens sig
- Ign 1 vltg
- Instrument panel cluster
- Ipc/dic fuse 10a
- Low ref
- Malfunction indicator lamp
- Mil cntrl
- Nca
- P/n sig
- Park/neutral position switch
- Pnk
- Pto cntrl
- Pto eng kill sig
- Pto engage sig
- Pto on sw sig
- Red
- Refrig prss sen
- Res/accel sig
- Rpm out
- S103
- S170
- Seo
- Seo b1 fuse 15a
- Set/coast sig
- Start enable rly
- Starting/charging system
- Tan
- Transmission control module (left front of engine compt)
- Transmissions system
- Underhood fuse block
- Vehicle speed sensor (left rear side of trans)
- Vss hi sig
- Vss low
- Wait to start ind
EXTERIOR LIGHTS
Back-up Lamps Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Back-up Lamps Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- (2500 hd, 3500 w/o crew cab) (1500, 2500) (3500 w/ crew cab)
- (2500 hd, 3500 w/o crew cab: left side of fuel tank) (1500, 2500: on spare tire hoist bracket) (3500 w/ crew cab: on left rear body mount)
- (left side of transmission) back-up lamp switch
- (near left kick panel) i/p relay block
- A/t
- A11
- B/u lmp vlt
- B/u lmps sig
- B/u lp fuse 20a
- Back-up alarm
- Body control module (bcm) (on lower left side of dash, below steering column)
- F10
- G302 g401 g403
- G403 (on left rear body mount)
- Hot in run or start
- Left back-up lamp
- M/t
- Park/neutral position (pnp) switch (left side of transmission)
- Pnk
- Rear lamps junction block
- Right back-up lamp
- Trailer connector
- Trlr b/u fuse 10a
- Underhood fuse block (left side of eng compt)
Exterior Lamps Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Exterior Lamps Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra 2004 3500:
- (2500 hd, 3500 w/o crew cab) (1500, 2500) (3500 w/ crew cab)
- (2500 hd, 3500 w/o crew cab: left side of fuel tank) (1500, 2500: on spare tire hoist bracket) (3500 w/ crew cab: on left rear body mount)
- Anl/
- Auto
- Back-up lamps circuit
- Body control module (bcm) (on lower left side of dash, below steering column)
- C2 b2
- Computer data lines system
- D10
- Drl
- Emergency vehicle roof lamp relay
- F11
- Frt park fuse 10a
- G100 (lower left radiator support)
- G200 (behind right side of dash, near right "a" pillar)
- G203 (behind left side of dash, near left "a" pillar)
- G302 g401 g403
- G403 (on left rear body mount)
- Hazard switch
- Head
- Headlamp switch
- Hot at all times
- Hot in run and start
- I/p relay block
- Ign e fuse 10a
- Left
- Left front marker lamp
- Left front park/ turn signal lamp
- Park
- Park lamp relay
- Pnk
- Prk lmp on
- Prk lmp rly
- Red
- Right
- Right front marker lamp
- Right front park/ turn signal lamp
- S100
- S101
- S215
- S217
- Serial data
- Stud 1 fuse 40a
- Stud 2 fuse 30a
- To trl park fuse (diagram 2 0f 3)
- Trailer connector
- Turn signal/ multi- function switch
- Under- hood fuse block (on left side of engine compt)
Exterior Lamps Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Exterior Lamps Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra 2004 3500:
- (2500 hd, 3500 w/o crew cab) (1500, 2500) (3500 w/ crew cab)
- (2500 hd, 3500 w/o crew cab: left side of fuel tank) (1500, 2500: on spare tire hoist bracket) (3500 w/ crew cab: on left rear body mount)
- (except w/ 4-wheel steering)
- (in brake clutch harn)
- (w/ roof marker lamps)
- (w/ 4-wheel steering)
- (w/ pto)
- A12
- Beacon lighting
- C1 b
- C1 d
- C1 g
- C1 h
- C2 d
- C3 b6
- C3 d
- C3 h
- C4 f
- D12
- E11
- F12
- From a frt park fuse (diagram 1 0f 3)
- G302 g401 g403
- G304 (except crewcab) (under right front seat)
- G305 (crewcab) (on left "b" pillar)
- Hot at all times
- I/p relay block
- Int park fuse 10a
- Interior lights system
- Left front clear- ance lamp
- Left license lamp
- Left rear clear- ance lamp
- Left rear turn signal
- Left tail/ stop- lamp
- Lr park fuse 10a
- Rear lamps junction block
- Red
- Right front clear- ance lamp
- Right i/p fuse block
- Right license lamp
- Right rear clear- ance lamp
- Right rear turn signal
- Right tail/ stop- lamp
- Roof beacon relay (at lower left "b" pillar
- Roof beacon switch
- Rr park fuse 10a
- S206 (in i/p harn)
- S215
- S219
- S420
- S421
- S422
- S423
- S424
- Seo b1 fuse 15a
- Seo b2 fuse 30a
- Stop lp fuse 25a
- Stop- lamp switch
- Tailgate marker lamp
- Trl park fuse 15a
- Under- hood fuse block (on left side of engine compt)
- Vehicle roof lamp lighting
- W/ emergency
- W/ roof
Exterior Lamps Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Exterior Lamps Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra 2004 3500:
- (behind right side of dash, near right "a" pillar)
- (behind right side of dash, near right "a" pillar) g200
- (w/ level 3 convenience package)
- A11
- Battery
- C10
- C3 e1
- C6 right i/p fuse block
- Center high mounted stop lamp (chmsl)
- Clearance lamps
- Computer data lines system
- D10
- Driver door module (ddm) (in driver's door)
- Driver outside rearview mirror
- E10
- Ext- erior illum lamp
- F10
- Flash fuse 25a
- Front passenger door module (fpdm) (in right front door)
- G200
- G200 (behind right side of dash, near right "a" pillar)
- G203 (behind left side of dash, near left "a" pillar)
- Ground
- Hazard sw
- Hot at all times
- I/p relay block
- I/p relay block (near left kick panel)
- Instrument panel cluster (ipc)
- Left i/p fuse block (on lower left side of dash)
- Left roof l marker lamp
- Left turn ind
- Logic
- Lr lamp volt
- Lt door lmp gnd
- Lt door lmp pwr
- Lt trlr st/trn fuse 10a
- Lt turn fuse 10a
- Lt turn sig
- Lt turn sig volt
- Nca
- Passenger outside rearview mirror
- Red
- Right i/p fuse block
- Right roof r marker lamp
- Right turn ind
- Rr lamp volt
- Rt door lmp gnd
- Rt door lmp pwr
- Rt trlr st/trn fuse 10a
- Rt turn fuse 10a
- Rt turn sig
- Rt turn sig volt
- S200 (at roof marker harness)
- S201 (at roof marker harness)
- S202
- S205
- S207
- Serial data
- Stoplamp sw
- Tan
- Turn ind
- Turn signal/flasher module
- Under- hood fuse block
- Veh chmsl fuse 10a
- Veh stop fuse 15a
GROUND DISTRIBUTION
Ground Distribution Wiring Diagram (1 of 4) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Ground Distribution Wiring Diagram (1 of 4) for GMC Cab & Chassis Sierra 2004 3500:
- (6.6l vin 1)
- (6.6l vin 2)
- (in forward lamp harness)
- (w/ allison) transmission control module
- 4.3l engine
- 5.3l flex fuel
- A/c compressor clutch
- A/c low pressure switch
- Auxiliary battery relay
- Battery (left)
- Battery (right)
- Brake fluid level switch
- Brake pressure differential switch
- Coolant level switch
- Daytime running lamp (drl) (left)
- Daytime running lamp (drl) (right)
- Diesel
- Engine control module
- Except 4.3l base
- Except 4.3l engine
- F/pmp relay
- Fog lamp (left)
- Fog lamp (right)
- Fuel composition sensor
- G100 (lower left radiator support)
- G102 (diesel) (right side of engine block)
- G102 (gas) (4.3l: lower right front of engine block) (except 4.3l: left side of engine block)
- G104 (left rear of engine block)
- G106 (right front of engine block)
- G107
- Gas
- Gas exc 4.3l
- Gas w/aux battery
- High beam headlamp (left)
- High beam headlamp (right)
- Horn (left)
- Horn (right)
- Ign 1 relay (gas)
- Ignition coil 1
- Ignition coil 2
- Ignition coil 3
- Ignition coil 4
- Ignition coil 5
- Ignition coil 6
- Ignition coil 7
- Ignition coil 8
- Ignition control module
- Low beam headlamp (left)
- Low beam headlamp (right)
- Mobile radio fuse block
- Park/ neutral position switch
- Park/turn signal lamp (left front)
- Park/turn signal lamp (right front)
- S102 (in engine harness)
- S104 (in engine harness)
- S107
- S156 (in engine harness)
- S157 (in engine harness)
- S223 (in seo harness)
- Throttle actuator control module
- Underhood fuse block (left side of engine compt)
- Upfitter option
- W/ dual horns
- W/aux battery
- W/pto
- Washer fluid level sensor
- Windshield washer fluid pump
Ground Distribution Wiring Diagram (2 of 4) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Ground Distribution Wiring Diagram (2 of 4) for GMC Cab & Chassis Sierra 2004 3500:
- (exc flex fuel) c
- (flex fuel)
- (upfitter option) roof beacon relay
- (upfitter option) roof mounted beacon
- (w/ allison) transmission control module
- Active & elect shift transfer case
- Active & manual shift transfer case
- C1 a
- C2 a
- C2 d
- C3 a
- Crew cab
- Diesel
- Dual tanks
- Electronic brake control module
- Engine oil level switch
- Exc 8.1l w/o calif lev
- Except crew cab
- Front axle actuator
- Fuel heater sensor
- Fuel injector control module
- Fuel pump
- Fuel pump & sender assembly (secondary)
- G101
- G103 (diesel) (right rear of engine block)
- G103 (gas) (right rear of engine block)
- G108 (diesel) (lower left side of engine)
- G109 (diesel) (left side of engine block)
- G110 (left front body mount)
- G304 (except crew cab) (under right front seat)
- G305 (crew cab) (left "b" pillar)
- G306 (on right "b" pillar)
- G390 (near "c" pillar)
- Gas
- Glow plug relay
- Inflatable restraint passenger presense module
- Inflatable restraint sensing & diagnostic module
- Intake air temperature (iat)/mass airflow (maf) sensor
- Manual shift transfer case
- Memory seat module (driver)
- Mini wedge (door jamb switch) (left rear)
- Mini wedge (door jamb switch) (right rear)
- Nca
- Park/ neutral position switch
- Powertrain control module
- Rear wheel steering control module
- Rear window defogger grid
- S103 (in engine harness)
- S110 (in engine harness)
- S329 (in passenger seat harness)
- Seat adjuster switch (passenger)
- Seat bolster/ lumbar switch (passenger)
- Transfer case shift control motor
- Transfer case shift control switch
- Water in fuel sensor
- Window switch (right rear)
- Window switch) (left rear)
Ground Distribution Wiring Diagram (3 of 4) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Ground Distribution Wiring Diagram (3 of 4) for GMC Cab & Chassis Sierra 2004 3500:
- (2500 hd, 3500 w/o crew cab) (1500, 2500) (3500 w/ crew cab)
- (2500 hd, 3500 w/o crew cab: left side of fuel tank) (1500, 2500: on spare tire hoist bracket) (3500 w/ crew cab: on left rear body mount)
- (base) window/ door lock switch (driver)
- (base) window/ door lock switch (passenger)
- (crew cab) backup alarm
- (except luxury)
- (if equipped) left front shock absorber solenoid
- (if equipped) right front shock absorber solenoid
- (left front)
- (left rear)
- (luxury) rear seat entertainment assembly
- (luxury) vehicle communication interface module
- (right front)
- (right rear)
- (tail gate)
- A12
- Audio amplifier
- B12
- Backup lamp (left)
- Backup lamp (right)
- Body control module
- C (gmc)
- C1 2c
- C1 a8
- C1 c5
- C1 d10
- C1 e
- C2 a
- C2 b6
- C3 b6
- Chevy
- Clearance lamps
- Column shift
- Cruise control module
- Data link connector
- Digital radio receiver
- E (chevy)
- Four wheel steering
- From i/p relay block a (diagram 3 of 4)
- G203 (near left "a" pillar)
- G302 g401 g403
- Gmc
- Hazard lamps switch
- Headlamp switch
- Hvac control module
- I/p relay block (near left kick panel)
- Ignition key alarm switch
- Inflatable restraint steering wheel module coil
- Instrument panel cluster
- Left i/p fuse block (lower left side of dash)
- License lamp (left)
- License lamp (right)
- Luxury
- Multi- function accessory switch
- Nca
- Radio
- Rear lamps junction block (inside of left rear frame rail)
- Rear seat audio controller
- Rear seat entertainment assembly
- Remote playback device (cd player)
- Right i/p fuse block (lower right side of dash)
- S213 (in i/p harness)
- S216 (in steering column harness)
- S217 (in steering column harn)
- S423
- S424
- Steering wheel dic controls
- Steering wheel speed/ position sensor
- Stop/turn signal lamp (right)
- Stop/turn signal lamp) (left)
- Tail/stop lamp (left)
- Tail/stop lamp (right)
- To i/p relay block (diagram 3 of 4)
- Tow/haul switch
- Traction control switch
- Trailer connector
- Transfer case shift control module
- Transmission shift select switch
- Turn signal hazard flasher module
- Turn signal/ multifunction switch
- Vehicle communication interface module
- Windshield wiper/washer switch
Ground Distribution Wiring Diagram (4 of 4) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Ground Distribution Wiring Diagram (4 of 4) for GMC Cab & Chassis Sierra 2004 3500:
- (auto a/c) air temp sensor assembly (inside front)
- (auto a/c) air temp sensor assembly (inside rear)
- (base) driver unlock relay
- (except bose or luxury) auxiliary power outlet (front)
- (except bose or luxury) cigar lighter
- (if equipped) inflatable restraint disable switch
- (if equipped) power takeoff switch
- (if equipped) selectable ride switch
- (luxury) garage door opener
- (not used)
- (upfitter option) emergency vehicle roof lamp relay
- (upfitter option) roof beacon switch
- (upfitter option) wrecker relay
- (w conv package) driver door module
- (w conv package) passenger door module
- (w/o conv package) mini wedge door jamb switch (driver)
- (w/o conv package) mini wedge door jamb switch (passenger)
- (w/o conv package) window/ door lock switch (driver)
- (w/o conv package) window/ door lock switch (passenger)
- A/t shift lock solenoid
- A12
- Auto a/c
- Auxiliary power outlet (bin)
- Auxiliary power outlet (console)
- Auxiliary power outlet (front)
- Blower motor
- Blower motor resistor assembly
- Bose exc luxury
- C1 6c
- C1 a
- C1 b9
- C1 d9
- C1 f6
- C3 c
- C4 a
- C5 e
- C7 f
- C8 f
- C9 a
- Center high mounted stop lamp
- Cigar lighter
- Clearance lamps
- Data link connector
- Dome lamp (front)
- Dome/ reading lamp (rear)
- G200 (behind right side of dash, near right "a" pillar)
- Headlamp switch
- Hvac control module
- I/p relay block (below left side of dash, left of steering column)
- Inside rearview mirror
- Instrument panel cluster
- Left i/p fuse block (lower left side of dash)
- Lock relay
- Luxury
- Man a/c
- Rear wheel steering switch
- Recirculation actuator
- Right i/p fuse block (lower right side of dash)
- Roof marker lamp (left)
- Roof marker lamp (right)
- S205
- S215 (in brake clutch harness)
- S345
- Transfer case shift control switch
- Unlock relay
- Vanity mirror lamp (left)
- Vanity mirror lamp (right)
- Windshield wiper motor module
HEADLIGHTS
Headlights Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Headlights Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- (w/ cj2)
- (w/ t89)
- (w/o cj2)
- (w/o t89)
- A12
- Ambient light sensor (on top center of dash)
- Ambient lt sens
- Anl/drl defeat
- Auto
- Body control module (bcm) (on lower left side of dash, below steering column)
- Drl fuse 10a
- Drl relay
- Drl rly ctrl
- Drl sw sig
- Flash to pass
- Fog lamp switch
- Fog lp fuse 15a
- Fog lp relay
- Fog lp rly ctrl
- Fog lp sw sig
- G100 (on lower left radiator support)
- G104 (left rear of engine block)
- G203 (near left "a" pillar)
- Hdlp dim sw sig
- Hdlp hi bm relay
- Hdlp lo bm relay
- Head
- Headlamp switch
- Hi bm rly ctrl
- Hi hdlp lt fuse 10a
- Hi hdlp rt fuse 10a
- Hi/lo beam select
- Hlps on sig
- Hot at all times
- I/p relay block (near left kick panel)
- Interior lights system
- Left daytime running lamp
- Left front fog lamp
- Left high beam head- lamp
- Left low beam head- lamp
- Lo bm rly ctrl
- Lo hdlp lt fuse 10a
- Lo hdlp rt fuse 10a
- Low ref
- Multifunction accessory switch
- Park
- Park brake switch (part of park brake assembly)
- Pk brake sig
- Right daytime running lamp
- Right front fog lamp
- Right high beam head- lamp
- Right low beam head- lamp
- S100
- S101
- S107
- S213
- Turn signal multifunction switch
- Underhood fuse block (left side of engine compt)
HORN
Horn Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Horn Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- (left side of engine compartment)
- C2 body control module (in center console)
- G100 (left radiator support bracket)
- Horn fuse 15a
- Horn relay
- Horn switch
- Hot at all times
- Left horn (left side of radiator support)
- Right horn (right side of radiator support)
- S101
- S10o
- Underhood fuse block
INSTRUMENT CLUSTER
Instrument Cluster Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Instrument Cluster Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- (diesel only)
- A10
- A11
- A12
- Abs ind
- Air bag ind
- B10
- B11
- B12
- Battery
- Battery ind
- Body control module (bcm) (on lower left side of dash, below steering column)
- Brake
- Brake ind
- C1 lamp
- Cargo lamp ind
- Class 2 data
- Computer data lines
- Coolant temp gauge
- Cruise ind
- Dic fuel sig
- Dic mode sw
- Dic sw sig
- Dic toggle sw
- Eng speed sig
- Except seo
- Exterior lights system
- Fuel gauge
- G100 (on lower left of radiator support)
- G200 (behind right side of dash, near right "a" pillar)
- G203 (behind left side of dash, near left "a" pillar)
- Ground
- High beam ind
- Hot at all times
- Hot in run or start
- Hour meter
- I/p dim
- I/p relay block (near left kick panel)
- Ign e fuse 10a
- Ignition
- Illumination
- Instrument panel cluster
- Ipc serial data
- Ipc/dic fuse 10a
- Left turn
- Left turn ind
- Lo wash fluid
- Low fuel ind
- Message display
- Mil cntrl
- Odometer
- Oil gauge
- Orn
- Overdrive off ind
- Pnk
- Prnd321
- Red
- Right turn
- Right turn ind
- S100
- S202
- Seat belt ind
- Security ind
- Seo
- Seo b1 fuse 15a
- Seo ign fuse 10a
- Service 4wd ind
- Soon ind (mil) service engine
- Speedometer
- Tachometer
- Tire pressure ind
- Tow/haul ind
- Traction control ind
- Transmission temp gauge
- Trip
- Trip reset
- Underhood fuse block (left side of engine compt)
- Upshift ind
- Variable dimming
- Volts gauge
- Vss
- Wait to start
- Wait to start ind (diesel only)
- Washer fluid level sensor (in washer fluid reservoir)
Instrument Cluster Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Instrument Cluster Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- (at left rear of vehicle, near spare tire bracket) (w/ 4 wheel steering) rear wheel steering control module
- (diesel only)
- (left rear of engine compt) (gas only, w/ auto cruise control) cruise control module (ccm)
- (near left kick panel) i/p relay block
- (on left front of engine compt) (diesel) engine control module (ecm)
- (w/ luxury package) radio
- 5 volt ref
- 5.3l flex fuel
- A10
- Class 2 data
- Computer data lines
- Coolant level switch (in coolant reservoir)
- Coolnt lev sig
- Diesel
- Diesel (6.6 vin 1)
- Diesel (6.6 vin 2)
- Eng speed sig
- Engine controls system
- Engine oil level switch (on oil pan)
- Engine oil pressure sensor (on top rear of engine)
- Except 5.3l flex fuel
- Fuel
- Fuel lev sens
- Fuel level sensor (primary) (inside fuel tank)
- Fuel level sensor (secondary) (inside fuel tank)
- G103 (on right rear of engine block)
- G104 (gas) (on left rear of engine block)
- G106 (diesel) (on right front of engine block)
- G108
- G203 (behind left side of dash, near left "a" pillar)
- Gas
- I/p relay block
- Inflatable restraint steering wheel module coil
- Low ref
- Mil ctrl
- Nca
- Oil lev sw
- Oil pres sig
- Person- alization
- Powertrain control module (pcm) (gas) (on left front of engine compt)
- S102
- S103
- S216
- S312
- Select
- Steering wheel dic controls
- Trip
- Vss
- W/ dual tank
- W/o dual tank
- Wait to start
INTERIOR LIGHTS
Courtesy Lamps Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Courtesy Lamps Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra 2004 3500:
- A11
- B12
- Body control module (lower left side of dash, below steering column)
- C3 a6
- Cargo lamp low ctrl
- Class 2 data
- Class 2 serial data
- Convenience package comfort and decor level #3
- Crew cab only
- Crew cab w/ ye9
- Ctsy lamp ctrl
- Ctsy lamp on sig
- Ctsy lamp power
- Dome lamp switch
- Door ajar sig
- Driver door latch assembly
- Driver door module (ddm) (in left front door)
- F tan
- G305 (left "b" pillar)
- G306 (on right "b" pillar)
- Headlamp switch
- Int lamp defeat sig
- Int lamp defeat sw
- Left front door courtesy lamp
- Left rear door courtesy lamp (2003)
- Left rear door latch assembly
- Lf door ajar sig
- Low ref
- Lr door ajar sig
- Merchandised package luxury edition
- Rear dome lamp
- Rf door ajar sig
- Right rear door courtesy lamp (2003)
- Right rear door latch assembly
- Rr door ajar sig
- Sp205 (left side of dash)
- Tan
- W/ ye9 or w/ y91
- W/o ye9
- Y91 =
- Ye9 =
Courtesy Lamps Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Courtesy Lamps Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra 2004 3500:
- (in headliner harness between overhead console reading lamps and i/p
- Cargo lamp
- Convenience package comfort and decor level 3
- Crew cab w/ ye9
- Dome
- Except crew cab w/ ye9
- Left vanity mirror lamp
- Map lamps
- Merchandised package luxury edition
- Overhead console
- Reading
- Rear courtesy reading lamps (crew cab w/ ye9)
- Relay block)
- Right vanity mirror lamp
- S321
- S345
- Tan
- W/ y91 and crew cab w/ ye9
- W/ ye9 and crew cab w/o ye9
- W/ ye9 except crew cab
- Y91 =
- Ye9 =
Courtesy Lamps Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Courtesy Lamps Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra 2004 3500:
- (2003)
- A12
- B10
- Bin lamp
- C10
- C11
- Cargo lamp switch
- Class 2 data
- Convenience package comfort and decor level #3
- Ctsy lamp control
- Ctsy lamp power
- Door ajar sig
- Front passenger door courtesy light
- Front passenger door latch assembly
- Front passenger door module (fpdm) (in right front door)
- G200 (behind right side of dash, near right "a" pillar)
- G203 (near left "a" pillar)
- I/p compartment lamp
- I/p relay block (below left side of dash, left of steering column)
- Left i/p courtesy lamp
- Left i/p fuse block (under left side of dash)
- Low ref
- Merchandised package luxury edition
- Right i/p courtesy lamp (2003)
- Right i/p fuse block (lower right side of dash)
- S202
- S205
- S213
- Tan
- W/ ye9 or w/ y91
- W/o ye9
- Y91 =
- Ye9 =
Instrument Illumination Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Instrument Illumination Wiring Diagram (1 of 3) for GMC Cab & Chassis Sierra 2004 3500:
- 2 hi ind
- 2 hi ind control
- 4 hi ind
- 4 hi ind control
- 4 lo ind
- 4 lo ind control
- 5 volt ref
- A11
- A12
- Auto 4wd ind
- B pnk
- B11
- Body control module (lower left side of dash, below steering column)
- Crew cab only
- Diff lock ind control
- Dimming input
- Dimming return
- Drl off
- Drl off ind ctrl
- Fog lamp rly ctrl
- G305 (left "b" pillar)
- G306 (right "b" pillar)
- Headlamp on
- Headlamp on ind ctrl
- Headlamp switch
- Instrument panel cluster
- Instrument panel dimming
- Left rear window switch
- Np1 = transfer case, electric shift control, 2 speed np8 = transfer case active, 2 speed pushbutton control
- Pnk
- Red
- Right rear window switch
- S212
- Transfer case shift control module (behind headlamp switch)
- Transfer case shift control switch
- W/ np1
- W/ np8
Instrument Illumination Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Instrument Illumination Wiring Diagram (2 of 3) for GMC Cab & Chassis Sierra 2004 3500:
- (left rear of vehicle, near spare tire bracket)
- (near left "a" pillar)
- 2ws ind
- 2ws ind control
- 4ws ind
- 4ws ind control
- Control
- Fog lamp circuit
- G203
- Hvac control module
- Inflatable restraint i/p module disable switch
- Inflatable restraint steering wheel module coil
- Lower left
- Lower right
- Multifunction accessory switch
- Nca
- Overhead console
- Power take off (pto) switch
- Rear wheel steering control module
- Rear wheel steering mode select switch
- Remote playback device-cd player
- S205
- Steering wheel
- Tan
- Tow ind
- Tow mode ind
- Traction control switch
- Transfer case shift control switch
- Underhood fuse block (left side of engine compt, near battery)
- Upper left
- Upper right
Instrument Illumination Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Instrument Illumination Wiring Diagram (3 of 3) for GMC Cab & Chassis Sierra 2004 3500:
- (lower left side of dash)
- A11
- C10
- Driver window/door lock switch
- Electronic suspension system
- Exterior lamps
- Firm indicator
- Fog lamp
- Front passenger window/door lock switch
- G100 (lower left side of radiator core support)
- G200 (behind right side of dash, near right "a" pillar)
- G203 (near left "a" pillar)
- Headlamp leveling switch
- I/p relay block (below left side of dash, left of steering column)
- Left i/p fuse block
- Multifunction accessory switch
- Right i/p fuse block (lower left side of dash)
- Roof beacon switch
- S101
- S202
- S345
- Selectable ride switch
- W/ t89
- W/ t96
MEMORY SYSTEMS
Memory Mirrors Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Memory Mirrors Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- 5 volt ref
- Batt (+)
- Battery
- Class 2 serial data
- Computer data lines system
- Ddm fuse 15a
- Driver door module (in driver's door)
- Driver outside rearview mirror
- Electro- chromic
- Exit
- Folding/ telescoping motor
- Front passenger door module (in passenger's door)
- Front passenger outside rearview mirror
- G200 (near right "a" pillar)
- Ground
- Heating element
- Horizontal
- Hot at all times
- I/p relay block (below left side of dash, left of steering column)
- Left
- Left i/p fuse block (lower left side of dash)
- Low ref
- Lt doors circuit breaker 25a
- Mem 1 sw sig
- Mem 2 sw sig
- Memory/ heated seat switch
- Mir htr low ref
- Mir htr sply voltage
- Mir mtr dwn ctrl
- Mir mtr extend ctrl
- Mir mtr retract ctrl
- Mir mtr rt ctrl
- Mir position sens sig
- Mir sens low ref
- Mir signal
- Mtr position sens sig
- Pdm fuse 15a
- Pnk
- Red
- Right i/p fuse block (lower right side of dash)
- Rt door circuit breaker 25a
- Rt/dwn mtr common
- S202 (in i/p harness)
- Set
- Tan
- Vert posit sens sig
- Vertical
Memory Seat Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Memory Seat Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- (in driver seat harn)
- (not used)
- 5 volt ref
- Batt (+)
- C (not used)
- C10 h
- Class 2 serial data
- Computer data lines system
- Driver seat adjuster switch
- Frt dwn
- Frt up
- Frt vert dn sw sig
- Frt vert mtr dn ctrl
- Frt vert mtr pos sen
- Frt vert mtr up ctrl
- Frt vert up sw sig
- Fwd
- G305 (on left "b" pillar)
- Gnd
- Heated seat cus pwr
- Heated seat temp sig
- Horiz fwd sw sig
- Horiz mtr fwd ctrl
- Horiz mtr pos sen sig
- Horiz mtr rwd ctrl
- Horiz rwd sw sig
- Hot at all times
- Htd seat back ctrl
- Htd seat back pwr
- Htd seat cus ctrl
- Htd seat cus pwr
- I/p relay block (near left kick panel)
- Low ref
- Lum horiz pos sen sig
- Lum mtr fwd ctrl
- Lum mtr rwd ctrl
- Lum mtr rwd ctrl lum mtr rwd ctrl
- Memory seat module (under left front seat)
- Pnk
- Pnk pnk
- Rear vert dn sw sig
- Rear vert mtr pos sens
- Rear vert up sw sig
- Rec fwd
- Rec rwd
- Recline fwd sw sig
- Recline mtr fwd ctrl
- Recline mtr pos sen sig
- Recline mtr rwd ctrl
- Recline rwd sw sig
- Rr dwn
- Rr up
- Rr vert mtr dn ctrl
- Rr vert mtr up ctrl
- Rwd
- S311
- S314
- S315 (in driver seat harn)
- Seat circuit breaker 30a
- Seats system (heated seats circuit)
- Tan
- Torso blstr in sw sig
- Torso blstr out sw sig
- Torso bolster in ctrl
- Torso bolster out ctrl
- Trso blstr pos sens sig
Memory Seat Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Memory Seat Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- (in driver seat harn) s309
- (in driver seat harn) s310
- A red
- Batt (+)
- C (not used)
- Class 2 serial data
- Computer data lines system
- Driver door module (in driver's door)
- Driver seat bolster motor
- Driver seat bolster motor position sensor
- Driver seat bolster/ lumbar switch
- Driver seat front vertical motor
- Driver seat front vertical position sensor
- Driver seat horiz- ontal position sensor
- Driver seat lumbar motor
- Driver seat lumbar motor position sensor
- Driver seat rear vertical motor
- Driver seat rear vertical position sensor
- Driver seat recliner motor
- Driver seat recliner motor position sensor
- Exit
- Mem 1 sw sig
- Mem 2 sw sig
- Memory/ heated seat switch
- Out
- Pnk
- Red
- Set
- Tan
POWER DISTRIBUTION
6.6L VIN 2
6.6L VIN 2, Power Distribution Wiring Diagram (1 of 5) for GMC Cab & Chassis Sierra 2004 3500
List of elements for 6.6L VIN 2, Power Distribution Wiring Diagram (1 of 5) for GMC Cab & Chassis Sierra 2004 3500:
- (base) (exc base)
- (in seo harness)
- (not used)
- 4ws fuse 15a
- A c7
- A12
- Abs fuse 60a
- Audio amplifier
- B c9
- B11 c1
- B12 c1
- B2 c3
- Battery (left)
- Battery (right)
- Battery fuse 175a
- Body control module
- C3 b
- C7 b
- C9 d
- Cig ltr fuse 15a
- Cigar lighter
- D12 c1
- Data link connector
- Digital radio receiver
- Dual generator
- E10
- Eap fuse 15a
- Electronic brake control module
- Emergency vehicle roof lamp relay
- Evaporative emissions canister vent solenoid
- Except luxury
- F2 c1
- Fuse holder
- Fusible link
- G200 (behind right side of dash, near "a" pillar)
- Generator (left)
- Generator (right)
- Glow plug controller
- Harness)
- I/p relay block (left of steering column)
- I/p relay block (near left kick panel)
- Ign a fuse 40a
- Ign b fuse 40a
- Luxury
- Mini fuse 30a
- Mobile radio
- Mobile radio fuse 125a
- Mobile radio fuse block
- Mobile radio relay
- Nca
- Radio
- Radio amp fuse 30a
- Radio fuse 15a
- Rear seat audio (rsa) controller
- Rear seat audio (rsa) controller (crew cab)
- Rear wheel steering
- Rear wheel steering control module
- Rear wheel steering fuse 125a
- Red
- Rr wiper fuse 25a
- Rtd fuse 30a
- S127 (in engine harness)
- S205 s303
- S220 (in seo red
- S221
- S222
- Starter
- Starter relay
- Stud 1 fuse 40a
- Stud 2 fuse 30a
- Sunroof fuse 25a
- Tbc batt fuse 10a
- To ignition switch (diagram 4 of 5)
- To ignition switch (diagram 5 of 5)
- To ipc/dic fuse (diagram 2 of 5)
- Trailer connector
- Underhood fuse block (left side of engine compt)
- Underhood junction block
- Upfitter option
- Vses/ ecas fuse 60a
- W/ california emissions
- W/o california emissions
- Wrecker relay
6.6L VIN 2, Power Distribution Wiring Diagram (2 of 5) for GMC Cab & Chassis Sierra 2004 3500
List of elements for 6.6L VIN 2, Power Distribution Wiring Diagram (2 of 5) for GMC Cab & Chassis Sierra 2004 3500:
- (auto a/c) (man a/c)
- (in i/p harness) s335
- (not used)
- 8s8
- A c10
- A g
- A10
- Aux pwr fuse 20a
- Auxiliary power outlet (bin)
- Auxiliary power outlet (console)
- Auxiliary power outlet (front)
- B c5
- B11
- B11 c1
- Blower fuse 40a
- Blower motor resistor assembly
- C1 c2
- C1 f12
- C10
- C3 b
- C4 d
- C4 e6
- C6 a
- C8 a
- D12
- Defog relay
- E c8
- E11 c1
- Edu/ign1 relay
- Engine control module
- Except luxury
- F/pmp relay
- From radio fuse (diagram 1 of 5)
- G200 (behind right side of dash, near "a" pillar)
- Garage door opener
- Hvac control module
- Hvac/ecas fuse 10a
- I/p relay block (near left kick panel)
- Info fuse 15a
- Instrument panel cluster
- Ipc/dic fuse 10a
- Lh hid fuse 20a
- Luxury
- Nca
- Overhead console
- Pcm b fuse 20a
- Rear seat entertainment assembly
- Red
- Remote playback device (cd player)
- Rh hid fuse 20a
- Right i/p fuse block (lower right side of dash)
- Roof beacon relay
- Roof beacon switch
- Rr defog fuse 30a
- Rr hvac fuse 30a
- Seo b1 fuse 15a
- Seo b2 fuse 30a
- Stop lp fuse 25a
- Stoplamp switch
- To lbec 1 fuse (diagram 3 of 5)
- Transfer case encoder motor
- Transfer case shift control module
- Transmission control module
- Trec fuse 30a
- Underhood fuse block (left side of engine compt)
- Vehicle communication interface module
- W/o 8s8
6.6L VIN 2, Power Distribution Wiring Diagram (3 of 5) for GMC Cab & Chassis Sierra 2004 3500
List of elements for 6.6L VIN 2, Power Distribution Wiring Diagram (3 of 5) for GMC Cab & Chassis Sierra 2004 3500:
- (left side of engine compt) underhood fuse block
- (lower left side of dash)
- (not used)
- (passenger seat harness)
- A c5
- A c6
- A/c comp fuse 10a
- A/c comp relay
- A10 c1
- A12
- A7 c1
- Aux pwr 2 fuse 20a
- B c7
- B12
- Body control module
- C c3
- C9 c1
- Ddm fuse 15a
- Driver door module
- Driver door unlock relay
- Drl fuse 10a
- Drl relay
- E c10
- E c7
- E10
- E11 c1
- E12
- Ecc fuse 10a
- Ecm 1 fuse 15a
- Egr vacuum control valve solenoid
- Egr vacuum vent solenoid
- Egr valve throttle valve solenoid
- Engine control module
- Exc base
- F c3
- Flash fuse 25a
- Fog lp fuse 15a
- Fog lp relay
- From mbec 1 fuse (diagram 3 of 5)
- From pcm b fuse (diagram 2 of 5)
- Front passenger door module
- Fuel heater
- Fuel ht fuse 15a
- G c4
- Hdlp-hi relay
- Hdlp-low relay
- Horn relay
- I/p relay block (near left kick panel)
- Intake air temperature (iat)/mass air flow (maf) sensor
- Lbec 1 fuse 50a
- Lbec 2 fuse 50a
- Left i/p fuse block
- Lock relay
- Locks fuse 20a
- Lt doors circuit breaker 25a
- Lumbar bolster switch (front passenger)
- M c4
- Mbec 1 fuse 50a
- Memory seat module
- Park lp relay
- Pdm fuse 10a
- Pnk
- Red
- Right i/p fuse block (lower right side of dash)
- Rt door circuit breaker 25a
- S178
- S179
- S328
- Seat adjuster switch (driver)
- Seat adjuster switch (front passenger)
- Seat circuit breaker 30a
- Tbc 2a fuse 15a
- Tbc 2b fuse 15a
- Tbc 2c fuse 15a
- To fuel ht fuse (diagram 3 of 5)
- Turn signal/ hazard flasher module
- Underhood fuse block (left side of engine compt)
- Unlock relay
- W/s wash fuse 15a
- W/s wash relay
- Window switch (left rear) (crew cab)
- Window switch (right rear)
6.6L VIN 2, Power Distribution Wiring Diagram (4 of 5) for GMC Cab & Chassis Sierra 2004 3500
List of elements for 6.6L VIN 2, Power Distribution Wiring Diagram (4 of 5) for GMC Cab & Chassis Sierra 2004 3500:
- (auto a/c)
- (man a/c)
- (not used)
- (over 8600 gvw) (8600 gvw or less)
- (steering column harness) s240
- 4wd fuse 15a
- Acc
- Air temperature actuator (left)
- Air temperature actuator (right)
- Automatic transmission
- B10 a1
- Body control module
- Brake fuse 10a
- C1 c9
- C1 d12
- C1 e8
- C175
- C2 c2
- C4 b
- C4 c
- Clutch start switch
- Crank fuse 10a
- Cruise
- Cruise control module
- Cruise control on/off switch
- Cruise fuse 10a
- E11
- Electronic brake control module
- Engine control module
- Exc m74 transmission
- F10
- From ign a fuse (diagram 1 of 5)
- Front axle actuator
- Htr/ac fuse 30a
- Hvac 1 fuse 10a
- Hvac control module
- Ign 0 fuse 10a
- Ign 3 fuse 10a
- Ignition switch
- Left i/p fuse block (lower left side of dash)
- Lock
- Mode actuator
- Off
- Pnk
- Power takeoff (pto) switch
- Pto
- Rear wheel steering control module
- Recirculation actuator
- Red
- Right i/p fuse block (lower right side of dash)
- Run
- Start
- Steering wheel speed/ position sensor
- Stoplamp switch
- Tbc ign 0 fuse 10a
- Transfer case shift control switch
- Transmission control module
- Turn signal multifunction switch
- Underhood fuse block (left side of engine compt)
6.6L VIN 2, Power Distribution Wiring Diagram (5 of 5) for GMC Cab & Chassis Sierra 2004 3500
List of elements for 6.6L VIN 2, Power Distribution Wiring Diagram (5 of 5) for GMC Cab & Chassis Sierra 2004 3500:
- (not used)
- 8s8
- A/c comp relay
- Acc
- B/u lp fuse 20a
- Backup lamp switch
- Body control module
- C c8
- C1 b2
- C10
- C8 d8
- Clutch start switch (m/t)
- D c5
- D10 c1
- Defog relay
- E c3
- F11
- From ign b fuse (diagram 1 of 5)
- Fuse block mobile radio (upfitter option)
- I/p relay block (left of steering column)
- I/p relay block (near left kick panel)
- Ign e fuse 10a
- Ignition switch
- Inflatable restraint i/p module disable switch
- Inflatable restraint passenger presence module
- Inflatable restraint sensing & diagnostic module
- Inside rearview mirror
- Instrument panel cluster
- Left i/p fuse block (lower left side of dash)
- Lock
- M/t
- Off
- Park/neutral position switch (a/t)
- Pnk
- Rr wpr fuse 15a
- Run
- Selectable ride switch
- Seo accy fuse 10a
- Seo ign fuse 10a
- Sir fuse 15a
- Start
- Tbc accy fuse 10a
- Tbc ign 1 fuse 10a
- Turn signal/ multifunction switch
- Underhood fuse block (left side of engine compt)
- W/o 8s8
- Windshield wiper motor module
- Ws wpr fuse 25a
POWER DOOR LOCKS
Power Door Locks Wiring Diagram, Base for GMC Cab & Chassis Sierra 2004 3500
List of elements for Power Door Locks Wiring Diagram, Base for GMC Cab & Chassis Sierra 2004 3500:
- (gasoline) (diesel)
- A12
- B10
- B11
- B12
- Battery
- Body control module (on lower left side of dash, near steering column)
- C1 2c
- C1 c9
- C1 d10
- C1 d11
- C1 d12
- C1 f6
- C3 b
- C3 f
- C7 f
- Driver door lock actuator
- Driver door lock switch
- Driver unlock relay
- Front passenger door lock actuator
- Front passenger door lock switch
- G200 (below right side of dash)
- G203 (near left "a" pillar)
- Hot at all times
- I/p relay block (near left kick panel)
- Ign key sw
- Ignition key alarm switch (on ignition key cylinder)
- Instrument panel cluster
- Left i/p fuse block (lower left side of dash)
- Left rear door lock actuator
- Lock
- Lock ctrl
- Lock relay
- Locks fuse 20a
- Pcm ecm (left front of engine compartment)
- Relay ctrl
- Right i/p fuse block (lower right side of dash)
- Right rear door lock actuator
- S202 (in i/p harn)
- S217
- Serial data
- Splice pack sp205 (in i/p harn)
- Tan
- Tbc batt fuse 10a
- Underhood fuse block (on left side of engine compt)
- Unlock
- Unlock ctrl
- Unlock relay
- W/ crew cab
Power Door Locks Wiring Diagram, Up Level (1 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Power Door Locks Wiring Diagram, Up Level (1 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- (gasoline) (diesel)
- (lower left side of dash) left i/p fuse block
- A12
- B12
- Battery
- Body control module (on lower left side of dash, near steering column)
- C1 a2
- C1 a7
- C1 f6
- C4 l (not used)
- Door lock switch
- Driver door module (inside driver door)
- F (not used)
- Front passenger door module (inside right front passenger door)
- G200 (behind right side of dash)
- G200 (below right side of dash)
- G203 (near left kick panel)
- Ground
- Hot at all times
- I/p relay block (behind left side of dash)
- Ign key sw
- Ignition key alarm switch (on ignition key cylinder)
- Key sw
- Key sw sig
- Left i/p fuse block (lower left side of dash)
- Left rear door lock actuator
- Lock
- Lock ctrl
- Lock relay
- Locks fuse 20a
- Pcm ecm (left front of engine compartment)
- Pdm fuse 10a
- Right i/p fuse block (behind right side of dash)
- Right i/p fuse block (lower right side of dash)
- Right rear door lock actuator
- S202 (in i/p harn)
- S217
- Serial data
- Tan
- Unlock
- Unlock ctrl
- Unlock relay
Power Door Locks Wiring Diagram, Up Level (2 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Power Door Locks Wiring Diagram, Up Level (2 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- (lower right side of dash) right i/p fuse block
- C1 d12
- Driver mini wedge door jamb switch (rear of driver's door)
- Front passenger mini wedge door jamb switch (rear of left front passenger's door)
- Hot at all times
- Instrument panel cluster
- Key sw
- Lock act
- Splice pack sp205 (in i/p harn)
- Tan
- Tbc batt fuse 10a
- Underhood fuse block (on left side of engine compt)
POWER MIRRORS
Electrochromic Mirror Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Electrochromic Mirror Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- A12
- A7 c1
- Air temp sensor
- Ambient photo sensor
- B11
- B12
- Back up lamp voltage output c5
- Back up voltage
- Body control module (bcm) (on lower left side of dash, below steering column)
- Body relay block
- Compass
- Computer data lines system
- Driver door module (ddm) (in driver's door)
- Driver outside rearview mirror
- Electrochromic mirror
- G200 (near right "a" pillar)
- Ground
- Hot in run & start
- Ign 1
- Inside rearview mirror
- Left i/p fuse block (lower left side of dash)
- Low ref
- Mir signal
- Nca
- On/off
- Outside air temperature sensor
- Pnk
- Rr light photo sensor
- S345
- Selector switch
- Serial data
- Sir fuse 15a
- Temp
- Underhood fuse block (left side of engine compt)
Power Mirrors Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Power Mirrors Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- 5 volt ref
- B11
- Battery
- Class 2 serial data
- Computer data lines system
- Ddm fuse 15a
- Down
- Driver door module (in driver's door)
- Driver mirror
- Driver outside rearview mirror
- Electro- chromic
- Folding/ telescoping motor
- Front passenger door module (in right front door)
- Front passenger outside rearview mirror
- G200 (near right "a" pillar)
- Ground
- Heating element
- Horizontal
- Hot at all times
- Hvac control module (in center of dash)
- I/p relay block (near left kick panel)
- Left
- Left i/p fuse block (lower left side of dash)
- Low ref
- Lt doors circuit breaker 25a
- Mir htr low ref
- Mir htr sply voltage
- Mir mtr dwn ctrl
- Mir mtr extend ctrl
- Mir mtr retract ctrl
- Mir mtr rt ctrl
- Mir position sens sig
- Mir sens low ref
- Mir signal
- Mtr position sens sig
- Pass- enger mirror
- Pdm fuse 10a
- Pnk
- Red
- Right
- Right i/p fuse block (lower right side of dash)
- Rt door circuit breaker 25a
- Rt/dwn mtr common
- S202
- Switch power
- Tan
- Vert posit sens sig
- Vertical
POWER SEATS
Driver Seat Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Driver Seat Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- Back
- C10
- Crew cab
- Driver seat adjuster switch
- Driver seat front vertical motor
- Driver seat horizontal motor
- Driver seat rear vertical motor
- Except crew cab
- Front dn
- Front up
- Fwd
- G305 (on left "b" pillar)
- G306 (on right "b" pillar)
- Hot at all times
- I/p relay block
- Rear dn
- Rear up
- Red
- Seats circuit breaker 30a
- Tan
Heated Seats Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Heated Seats Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- (in driver seat jumper harness)
- (in driver's seat harness) s311
- (not used)
- Back & cushion select
- Back only ind
- Back only indicator
- Back only select
- Batt
- Batt (+)
- Bck & csh select
- C1 4a
- C1 7e
- C1 a7
- C1 c9
- C1 f6
- C10 h
- C2 f
- C3 c
- C3 d
- C3 f
- C4 a
- C7 c
- C7 e
- Computer data lines system
- Ddm fuse 15a
- Driver back heated seat element
- Driver cushion heated seat element
- Driver door module
- Element control
- Front passenger back heated seat element
- Front passenger cushion heated seat element
- Front passenger door module
- G200 (behind right side of dash, near right "a" pillar)
- G305 (on left "b" pillar)
- Gnd
- Ground
- Hi heat ind
- Hi heat indicator
- Hot at all times
- I/p relay block
- Left i/p fuse block
- Low heat ind
- Low heat indicator
- Low ref
- Lt doors circuit breaker 25a
- Med heat ind
- Med heat indicator
- Memory seat module (underside of left front seat)
- Memory/heated seat switch
- Nca
- Pdm fuse 10a
- Pnk
- Right i/p fuse block
- Rt doors circuit breaker 30a
- S202
- S314
- Seats circuit breaker 30a
- Serial data
- Switch power
- Tan
- Temp signal
Passenger Full Feature Seat Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Passenger Full Feature Seat Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- Back
- C10
- Fr dn
- Fr up
- Front passenger seat adjuster switch
- Front passenger seat front vertical motor
- Front passenger seat horizontal motor
- Front passenger seat rear recliner motor
- Front passenger seat rear vertical motor
- Fwd
- G306 (on right "b" pillar)
- Hot at all times
- I/p relay block
- Red
- Rr dn
- Rr up
- S328
- S329
- Seats circuit breaker 30a
- Tan
Passenger"s Lumbar Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Passenger"s Lumbar Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- C10 e
- Front passenger lumbar/ bolster switch
- Front passenger seat bolster m0tor
- Front passenger seat lumbar m0tor
- G306 (on right "b" pillar)
- Hot at all times
- I/p relay block
- Out
- Pnk
- S328
- S329
- Seats circuit breaker 30a
POWER WINDOWS
Power Windows Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Power Windows Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- (crew cab)
- B+ volt
- B12
- Bcm class 2 serial data
- Body control module (left side of dash)
- Body relay block
- C1 7b
- C10
- C7 e
- Ddm class 2 serial data
- Driver door module
- Driver window motor
- Front passenger door module
- Front passenger window motor
- G305 (on left "b" pillar)
- G306 (on right "b" pillar)
- Ground
- Hot at all times
- Illumination
- Interior lights system
- Left front window
- Left i/p fuse block (left side of dash)
- Left rear window
- Left rear window motor
- Left window switch
- Logic
- Lt doors circuit breaker 25a
- Pwr wnd lockout lr sig
- Pwr wnd lockout lr signal
- Pwr wnd lockout rr sig
- Pwr wnd lockout rr signal
- Pwr wnd motor lf down cntrl
- Pwr wnd motor lf up cntrl
- Pwr wnd motor lr rear down cntrl
- Pwr wnd motor lr rear up cntrl
- Pwr wnd motor rf down cntrl
- Pwr wnd motor rf up cntrl
- Pwr wnd motor rr rear down cntrl
- Pwr wnd motor rr rear up cntrl
- 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 i/p fuse block (right side of dash)
- Right rear window
- Right rear window motor
- Right window switch
- Rr window (crew cab)
- Rt doors circuit breaker 25a
- Splice pack sp205
- Switch power
- Tan
- Window down
- Window right front
- Window up
RADIO
Base Radio Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Base Radio Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- A10
- A11
- A12
- Antenna
- Aud out -
- B10
- B11
- B12
- Bare
- Cell voice sig
- Coax
- Common aud sig
- Computer data lines system
- Digital radio antenna
- Digital radio receiver (if equipped)
- Drain wire
- G203 (near left "a" pillar)
- Ground
- Hot at all times
- I/p relay block (near left kick panel)
- Left aud sig
- Left front door speaker
- Left front tweeter speaker
- Left i/p fuse block (on lower left side of dash)
- Left rear door speaker (except standard cab) left rear speaker (standard cab)
- Lf aud +
- Lf spk out+
- Lf spk out-
- Lr spk out +
- Lr spk out -
- Radio
- Radio fuse 15a
- Rf spk out +
- Rf spk out -
- Right aud sig
- Right front door speaker
- Right front tweeter speaker
- Right i/p fuse block (on lower right side of dash)
- Right rear door speaker (except standard cab) right rear speaker (standard cab)
- Rr spk out+
- Rr spk out-
- Rt aud +
- Serial data
- Tan
- Underhood fuse block (at left side of engine compartment)
- Vehicle communication interface module (behind passenger air bag module)
- Voice low ref
- Voice signal
Mid-Line Radio Wiring Diagram, with Rear Seat Audio (1 of 3) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Mid-Line Radio Wiring Diagram, with Rear Seat Audio (1 of 3) for GMC Cab & Chassis Sierra 2004 3500:
- (i/p harness) sp205
- (in console harness) s330
- A10
- A11
- A12
- Antenna
- B10
- B11
- B12
- B31
- Bare
- Bcm class 2 serial data
- Body control module (below steering column)
- C201
- C277
- Cell voice sig
- Coax
- Common aud sig
- Computer data lines system
- Drain wire
- Enable sig
- Engine controls system
- G203 (near left "a" pillar)
- Ground
- Hot at all times
- I/p relay block (near left kick panel)
- Inflatable restraint steering wheel module coil
- Left aud sig
- Left steering wheel audio control switch
- Lf spk out+
- Lf spk out-
- Lr aud sig+
- Lr aud sig-
- Lr spk out +
- Lr spk out -
- Nca
- Pnk
- Prog
- Radio
- Radio fuse 15a
- Radio mute
- Radio on sig
- Rear seat audio controller (on rear of center console)
- Remote radio control signal
- Rf spk out +
- Rf spk out -
- Right aud sig
- Right steering wheel audio control switch
- Rr aud sig+
- Rr aud sig-
- Seek dn
- Seek up
- Serial data
- Source dn
- Source up
- Steering wheel
- Tan
- Underhood fuse block (at left side of engine compartment)
- Vehicle communication interface module
- Voice
- Voice low ref
- Voice signal
- Vol dn
- Vol up
- Vss signal
Mid-Line Radio Wiring Diagram, with Rear Seat Audio (2 of 3) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Mid-Line Radio Wiring Diagram, with Rear Seat Audio (2 of 3) for GMC Cab & Chassis Sierra 2004 3500:
- A10
- A11
- A12
- Audio amplifier
- B10
- B11
- B12
- Bare
- Drain wire
- Ground
- Hot at all times
- I/p relay block (below lower left side of dash)
- L spk out+
- L spk out-
- Left front door speaker
- Left front tweeter speaker
- Left i/p fuse block (on lower left side of dash)
- Left rear door speaker (crew cab) left rear speaker (except crew cab)
- Left subwoofer
- Lf aud sig+
- Lf aud sig-
- Lf spkr out+
- Lf spkr out-
- Lr aud sig+
- Lr aud sig-
- Lr spkr out+
- Lr spkr out-
- Pnk
- R spk out+
- R spk out-
- Radio fuse 15a
- Radio mute
- Radio on sig
- Rf aud sig+
- Rf aud sig-
- Rf spkr out+
- Rf spkr out-
- Right front door speaker
- Right front tweeter speaker
- Right i/p fuse block (on lower right side a of dash)
- Right rear door speaker (crew cab) right rear speaker (except crew cab)
- Right subwoofer
- Rr aud sig+
- Rr aud sig-
- Rr spkr out+
- Rr spkr out-
- Rsa enable
- Subwoofer speaker
- Tan
- Underhood fuse block (at left side of engine compartment)
Mid-Line Radio Wiring Diagram, with Rear Seat Audio (3 of 3) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Mid-Line Radio Wiring Diagram, with Rear Seat Audio (3 of 3) for GMC Cab & Chassis Sierra 2004 3500:
- Antenna
- Aud out -
- B11
- Bare
- Coax
- Com aud sig
- Computer data lines system
- Data lines
- Digital radio antenna
- Digital radio receiver (if equipped)
- Drain wire
- G203 (near left "a" pillar)
- Ground
- Hot at all times
- I/p relay block (near left kick panel)
- Info fuse 15a
- Lf aud +
- Lt aud sig
- Rear seat entertainment assembly (if equipped)
- Rt aud +
- Rt aud sig
- Serial data
- Splice pack sp250 (near hvac control module)
- Underhood fuse block (at left side of engine compartment)
Mid-Line Radio Wiring Diagram, without Rear Seat Audio (1 of 3) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Mid-Line Radio Wiring Diagram, without Rear Seat Audio (1 of 3) for GMC Cab & Chassis Sierra 2004 3500:
- (i/p harness) sp205
- (in console harness)
- A10
- A11
- A12
- Antenna
- B10
- B11
- B12
- B31
- Bare
- Bcm class 2 serial data
- Body control module (below steering column)
- C201
- C277
- Cell voice sig
- Coax
- Common aud sig
- Computer data lines system
- Drain wire
- Enable sig
- Engine controls system
- G203 (near left "a" pillar)
- Ground
- Hot at all times
- I/p relay block (near left kick panel)
- Inflatable restraint steering wheel module coil
- Left aud sig
- Left steering wheel audio control switch
- Lf spk out +
- Lf spk out -
- Lr aud sig +
- Lr aud sig -
- Nca
- Pnk
- Prog
- Radio
- Radio fuse 15a
- Radio mute
- Radio on sig
- Remote radio control signal
- Rf spk out +
- Rf spk out -
- Right aud sig
- Right steering wheel audio control switch
- Rr aud sig +
- Rr aud sig -
- S330
- Seek dn
- Seek up
- Serial data
- Source dn
- Source up
- Steering wheel
- Tan
- Underhood fuse block (at left side of engine compartment)
- Vehicle communication interface module
- Voice
- Voice low ref
- Voice signal
- Vol dn
- Vol up
- Vss signal
Mid-Line Radio Wiring Diagram, without Rear Seat Audio (2 of 3) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Mid-Line Radio Wiring Diagram, without Rear Seat Audio (2 of 3) for GMC Cab & Chassis Sierra 2004 3500:
- A10
- A11
- A12
- Audio amplifier
- B10
- B11
- B12
- Bare
- C1 b2
- Drain wire
- Ground
- Hot at all times
- I/p relay block (below lower left side of dash)
- L spk out+
- L spk out-
- Left front door speaker
- Left front tweeter speaker
- Left i/p fuse block (on lower left side of dash)
- Left rear speaker (crew cab) left rear door speaker (except crew cab)
- Left subwoofer
- Lf aud sig+
- Lf aud sig-
- Lf spkr out+
- Lf spkr out-
- Lr aud sig+
- Lr aud sig-
- Lr spkr out+
- Lr spkr out-
- Pnk
- R spk out+
- R spk out-
- Radio amp fuse 30a
- Radio fuse 15a
- Radio mute
- Radio on sig
- Rf aud sig+
- Rf aud sig-
- Rf spkr out+
- Rf spkr out-
- Right front door speaker
- Right front tweeter speaker
- Right i/p fuse block (on lower right side a of dash)
- Right rear speaker (crew cab) right rear door speaker (except crew cab)
- Right subwoofer
- Rr aud sig+
- Rr aud sig-
- Rr spkr out+
- Rr spkr out-
- Rsa enable
- Subwoofer speaker
- Tan
- Underhood fuse block (at left side of engine compartment)
Mid-Line Radio Wiring Diagram, without Rear Seat Audio (3 of 3) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Mid-Line Radio Wiring Diagram, without Rear Seat Audio (3 of 3) for GMC Cab & Chassis Sierra 2004 3500:
- Antenna
- Aud out -
- B11
- Bare
- Coax
- Com aud sig
- Computer data lines system
- Data lines
- Digital radio antenna
- Digital radio receiver (if equipped)
- Drain wire
- G203 (near left "a" pillar)
- Ground
- Hot at all times
- I/p relay block (near left kick panel)
- Info fuse 15a
- Lf aud +
- Lt aud sig
- Nca
- Rear seat entertainment assembly (if equipped)
- Rt aud +
- Rt aud sig
- Serial data
- Splice pack sp250 (near hvac control module)
- Underhood fuse block (at left side of engine compartment)
Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (1 of 3) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (1 of 3) for GMC Cab & Chassis Sierra 2004 3500:
- (i/p harness) sp205
- (in console harness)
- A10
- A11
- A12
- Antenna
- B10
- B11
- B12
- B31
- Bare
- Bcm class 2 serial data
- Body control module (below steering column)
- C201
- C277
- Cell voice sig
- Coax
- Common aud sig
- Computer data lines system
- Drain wire
- G203 (near left "a" pillar)
- Ground
- Hot at all times
- I/p relay block (near left kick panel)
- Inflatable restraint steering wheel module coil
- Left aud sig
- Left steering wheel audio control switch
- Lf aud sig+
- Lf aud sig-
- Lr aud sig +
- Lr aud sig -
- Lr aud sig+
- Lr aud sig-
- Nca
- Pnk
- Prog
- Radio
- Radio fuse 15a
- Rear seat audio controller (on rear of center console)
- Remote radio control signal
- Rf aud sig +
- Rf aud sig -
- Right aud sig
- Right steering wheel audio control switch
- Rr aud sig+
- Rr aud sig-
- S210
- S333
- Seek dn
- Seek up
- Serial data
- Source dn
- Source up
- Steering wheel
- Tan
- Underhood fuse block (at left side of engine compartment)
- Vehicle communication interface module (behind right side of dash)
- Voice
- Voice low ref
- Voice signal
- Vol dn
- Vol up
Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (2 of 3) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (2 of 3) for GMC Cab & Chassis Sierra 2004 3500:
- A10
- A11
- A12
- Audio amplifier
- B10
- B11
- B12
- Bare
- Computer data lines system
- Drain wire
- Ground
- Hot at all times
- L spk out+
- L spk out-
- Left front door speaker
- Left front tweeter speaker
- Left i/p fuse block (on lower left side l of dash)
- Left rear speaker
- Left subwoofer
- Lf aud sig+
- Lf aud sig-
- Lf spkr out+
- Lf spkr out-
- Lr spkr out+
- Lr spkr out-
- Mic sup volt
- Noise compensation microphone
- R spk out+
- R spk out-
- Radio fuse 30a
- Rf aud sig+
- Rf aud sig-
- Rf spkr out+
- Rf spkr out-
- Right front door speaker
- Right front tweeter speaker
- Right i/p fuse block (on lower right side b of dash)
- Right rear speaker
- Right subwoofer
- Rr spkr out+
- Rr spkr out-
- Serial data
- Subwoofer speaker
- Tan
- Underhood fuse block (at left side of engine compartment)
Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (3 of 3) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Premium Sound Radio Wiring Diagram, with CD, with Rear Entertainment, with Digital Receiver (3 of 3) for GMC Cab & Chassis Sierra 2004 3500:
- (near left "a" pillar) g203
- Antenna
- Aud out -
- Bare
- Cd player remote playback device (if equipped)
- Coax
- Computer data lines system
- Digital radio antenna
- Digital radio receiver (if equipped)
- Dimming
- Drain wire
- Ground
- Hot at all times
- I/p relay block (near left kick panel)
- Info fuse 15a
- Interior lights system
- Lf aud +
- Nca
- Rt aud +
- S335
- Serial data
- Splice pack sp250 (near hvac control module)
- Tan
- Underhood fuse block (at left side of engine compartment)
Premium Sound Radio Wiring Diagram, with CD (1 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Premium Sound Radio Wiring Diagram, with CD (1 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- (i/p harness) sp205
- (in console harness)
- A10
- A11
- A12
- Antenna
- B10
- B11
- B12
- B31
- Bare
- Bcm class 2 serial data
- Body control module (below steering column)
- C201
- C277
- Cell voice sig
- Coax
- Common aud sig
- Computer data lines
- Computer data lines system
- Drain wire
- G203 (near left "a" pillar)
- Ground
- Hot at all times
- I/p relay block (near left kick panel)
- Inflatable restraint steering wheel module coil
- Left aud sig
- Left steering wheel audio control switch
- Lf aud sig+
- Lf aud sig-
- Lr aud sig +
- Lr aud sig -
- Lr aud sig+
- Lr aud sig-
- Nca
- Pnk
- Prog
- Radio
- Radio fuse 15a
- Rear seat audio controller (on rear of center console)
- Remote radio control signal
- Rf aud sig +
- Rf aud sig -
- Right aud sig
- Right steering wheel audio control switch
- Rr aud sig+
- Rr aud sig-
- S210
- S333
- Seek dn
- Seek up
- Serial data
- Source dn
- Source up
- Steering wheel
- System
- Tan
- Underhood fuse block (at left side of engine compartment)
- Vehicle communication interface module (behind right side of dash)
- Voice
- Voice low ref
- Voice signal
- Vol dn
- Vol up
Premium Sound Radio Wiring Diagram, with CD (2 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Premium Sound Radio Wiring Diagram, with CD (2 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- A10
- A11
- A12
- Aud out -
- Audio amplifier
- B10
- B11
- B12
- Bare
- Cd player remote playback device
- Computer data lines system
- Dimming
- Drain wire
- Ground
- Hot at all times
- Info fuse 15a
- Interior lights system
- L spk out+
- L spk out-
- Left front door speaker
- Left front tweeter speaker
- Left i/p fuse block (on lower left side l
- Left rear speaker
- Left subwoofer
- Lf aud +
- Lf aud sig+
- Lf aud sig-
- Lf spkr out+
- Lf spkr out-
- Lr spkr out+
- Lr spkr out-
- Mic sup volt
- Noise compensation microphone
- Of dash)
- R spk out+
- R spk out-
- Radio fuse 30a
- Rf aud sig+
- Rf aud sig-
- Rf spkr out+
- Rf spkr out-
- Right front door speaker
- Right front tweeter speaker
- Right i/p fuse block (on lower right side b of dash)
- Right rear speaker
- Right subwoofer
- Rr spkr out+
- Rr spkr out-
- Rt aud +
- S335
- Serial data
- Subwoofer speaker
- Tan
- Underhood fuse block (at left side of engine compartment)
Premium Sound Radio Wiring Diagram, with Digital Radio Receiver (1 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Premium Sound Radio Wiring Diagram, with Digital Radio Receiver (1 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- (i/p harness) sp205
- (in console harness)
- A10
- A11
- A12
- Antenna
- B10
- B11
- B12
- B31
- Bare
- Bcm class 2 serial data
- Body control module (below steering column)
- C201
- C277
- Cell voice sig
- Coax
- Common aud sig
- Computer data lines system
- Drain wire
- G203 (near left "a" pillar)
- Ground
- Hot at all times
- I/p fuse block (below lower left side of dash)
- Inflatable restraint steering wheel module coil
- Left aud sig
- Left steering wheel audio control switch
- Lf aud sig+
- Lf aud sig-
- Lr aud sig +
- Lr aud sig -
- Lr aud sig+
- Lr aud sig-
- Nca
- Pnk
- Prog
- Radio
- Radio fuse 15a
- Rear seat audio controller (on rear of center console)
- Remote radio control signal
- Rf aud sig +
- Rf aud sig -
- Right aud sig
- Right steering wheel audio control switch
- Rr aud sig+
- Rr aud sig-
- S210
- S333
- Seek dn
- Seek up
- Serial data
- Source dn
- Source up
- Steering wheel
- Tan
- Underhood fuse block (at left side of engine compartment)
- Vehicle communication interface module (behind right side of dash)
- Voice
- Voice low ref
- Voice signal
- Vol dn
- Vol up
Premium Sound Radio Wiring Diagram, with Digital Radio Receiver (2 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Premium Sound Radio Wiring Diagram, with Digital Radio Receiver (2 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- A10
- A11
- A12
- Antenna
- Aud out -
- Audio amplifier
- B10
- B11
- B12
- Bare
- Coax
- Computer data lines system
- Digital radio antenna
- Digital radio receiver
- Drain wire
- Ground
- Hot at all times
- L spk out+
- L spk out-
- Left front door speaker
- Left front tweeter speaker
- Left i/p fuse block (on lower left side l of dash)
- Left rear speaker
- Left subwoofer
- Lf aud +
- Lf aud sig+
- Lf aud sig-
- Lf spkr out+
- Lf spkr out-
- Lr spkr out+
- Lr spkr out-
- Mic sup volt
- Noise compensation microphone
- R spk out+
- R spk out-
- Radio amp fuse 30a
- Rf aud sig+
- Rf aud sig-
- Rf spkr out+
- Rf spkr out-
- Right front door speaker
- Right front tweeter speaker
- Right i/p fuse block (on lower right side b of dash)
- Right rear speaker
- Right subwoofer
- Rr spkr out+
- Rr spkr out-
- Rt aud +
- Serial data
- Subwoofer speaker
- Tan
- Underhood fuse block (at left side of engine compartment)
SHIFT INTERLOCK
Shift Interlock Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Shift Interlock Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- A (w/ jf4)
- A/t shift lock control solenoid (on steering column)
- B (w/ jf4)
- B/u lp fuse 20a
- Btsi fuse 10a
- E (w/o jf4)
- F (w/o jf4)
- G200 (near right "a" pillar)
- Hot in run or start
- Park/ neutral position switch (left side of transmission)
- Pnk
- S202
- Stoplamp switch (top of brake pedal bracket)
- Underhood fuse block (left side of engine compt, near battery)
STARTING/CHARGING
6.6L VIN 2
6.6L VIN 2, Charging Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for 6.6L VIN 2, Charging Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- (at left side of eng compt, near battery) underhood junction block
- (not used)
- (on left front of engine compartment)
- Auxiliary battery relay (right rear of eng compt)
- Auxiliary generator
- B12
- Battery
- Charge indicator control
- Computer data lines
- Engine control module (ecm)
- Fuse holder
- Fusible link
- G100 (lower left radiator support)
- G102 (right side of engine block)
- G106 (on right front of eng block)
- G106 (right front of eng block)
- G203 (near left "a" pillar)
- Generator 2 turn 0n sig
- Generator field duty cycle signal
- Ground
- Hot in run & start
- I/p relay block (near left kick panel)
- Ign 1 volt
- Ign e fuse 10a
- Instrument panel cluster
- Ipc class 2 serial data
- Left battery
- Logig
- Pnk
- Power distribution system
- Primary generator
- Red
- Right battery
- Right battery (w/aux battery)
- Seo ign fuse 10a
- Serial data class 2
- Sp205 (in i/p harn)
- Starter
- Underhood fuse block (at left side of eng compt)
- Upfitter option
- Volts
- W/ seo
- W/aux battery
- W/dual batteries
- W/o seo
6.6L VIN 2, Starting Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for 6.6L VIN 2, Starting Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- Acc
- C1 a11
- C1 a3
- C1 a9
- C1 b12
- C2 a7
- C2 d11
- C2 f3
- C2 f9
- Clutch start switch (m/t) (on top of clutch pedal bracket)
- Crank fuse 10a
- Crank voltage
- D12
- Engine control module (ecm) (on left front of engine compartment)
- F11
- G100 (on lower left of radiator core support)
- G102 (right side of engine block)
- G106 (right front of engine block)
- Ign a fuse 40a
- Ign b fuse 40a
- Ign e fuse 10a
- Ignition switch
- Left battery
- Lock
- Nca
- Off
- Park/neutral position switch (a/t) (on left side of transmission)
- Pnk
- Power distribution system
- Red
- Right battery
- Run
- Run off
- Start
- Starter enable relay ctrl
- Starter motor
- Starter relay
- Starter solenoid
- Underhood fuse block (at left side of eng compt)
- Underhood fuse block (left side of eng compt)
- Underhood junction block (at left side of eng compt)
SUPPLEMENTAL RESTRAINTS
Supplemental Restraints Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Supplemental Restraints Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- 1362 (or 353)
- 2306 (or 371)
- Alo: w/ front passenger/ child presence detector
- B tan
- C10
- Class 2 serial data
- Control
- G200 (behind right side of dash, near right "a" pillar)
- G304 (under right front seat)
- Ground
- High control
- Hot in run or start
- I/p junction block (right side of dash behind access panel)
- I/p module disable switch signal
- I/p module suppression indicator control
- I/p relay block (below left side of dash, left of steering column)
- Ignition 1
- Ignition 1 voltage
- Inflatable restraint i/p module (behind right side of dash)
- Inflatable restraint i/p module disable switch
- Inflatable restraint sensing/diagnostic module (under left front seat)
- Inflatable restraint steering wheel module
- Inflatable restraint steering wheel module coil
- Key switch
- Left inflatable restraint front end sensor (on left front of vehicle, by core support)
- Left signal
- Logic
- Low control
- Low reference
- Nca
- Off
- On-w/o alo auto-w/ alo
- Others
- Pnk
- Red
- Red (or pnk)
- Right inflatable restraint front end sensor (on right front of vehicle, by core support)
- Right inflatable restraint side impact sensor
- Right signal
- Right voltage
- S205 (in i/p harness)
- Shorting bar
- Signal
- Sir fuse 15a
- Stage 1
- Stage 2
- Tan
- Twisted pair wires
- Underhood fuse block (at left side of eng compt, near battery)
- W/ c99 only
- W/ front passenger/ child presence detector
Supplemental Restraints Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Supplemental Restraints Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- Air bag
- C10
- Class 2 serial data
- Data link connector (lower left side of dash)
- Driver seat belt switch
- Front passenger seat belt switch
- G304 (under right front seat)
- Ground
- I/p mod disable sw sig
- I/p mod supp ind ctrl
- I/p relay block (below left side of dash, left of steering column)
- Ign
- Ignition 1 voltage
- Inflatable restraint passenger air bag on/off indicator
- Inflatable restraint passenger presence system (pps) module (under front passenger seat)
- Inflatable restraint passenger presence system sensor
- Inflatable restraint passenger seat belt tension retractor sensor
- Inside rearview mirror instrument
- Instrument panel cluster
- Ipc class 2 serial data
- Left inflatable restraint seat position switch
- Memory systems
- Off
- Pass air bag off ind ctrl
- Pass air bag on ind ctrl
- Pass seat belt tens 5v ref
- Pass seat belt tens lo ref
- Pass seat belt tens sig
- Pnk
- Pps sens 5v ref
- Pps sens lo ref
- Pps sens sig
- Red
- Right inflatable restraint seat position switch
- Splice pack sp205 (in i/p harness near fuse block)
- Tan
TRANSMISSION
Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Cab & Chassis Sierra 2004 3500
List of elements for Transfer Case Wiring Diagram, 2-Speed Automatic for GMC Cab & Chassis Sierra 2004 3500:
- (behind right side of dash, near right "a" pillar)
- (left front of engine compt) powertrain control module
- (on left front body mount) g110
- +5v ref
- 2-hi ind
- 2wd
- 4 hi
- 4 lo
- 4-hi ind
- 4-lo ind
- 4wd fuse 15a
- 4wd indicator lamp
- 4wd lo sig
- 4wd sw sig
- Awd
- Awd ind
- Axle ctrl
- Axle sw sig
- Battery
- Brake control
- Class ii data
- Ctrl
- Data link connector (under left side of dash, below steering column)
- Encoder
- Encoder low
- Encoder sig
- Except seo
- Front axle actuator
- Front propshaft speed sensor
- Ft shaft hi
- Ft shaft lo
- G200
- G203 (behind left side of dash, near left "a" pillar)
- Gnd
- Ground
- Hot at all times
- Hot in run
- Hot in run or start
- I/p relay block (near c1
- Ign e fuse 10a
- Illumination
- Instrument panel cluster
- Interior lights system
- Left i/p fuse block (lower left side of dash)
- Left kick panel)
- Lock sol ctrl
- Logic
- Motor ctrl a
- Motor ctrl b
- Nca
- Neutral ind
- Pnk
- Rear propshaft speed sensor
- Red
- Rr shaft hi
- Rr shaft lo
- Seo
- Seo ign fuse 10a
- Shift motor
- Splice pack sp205 (in i/p harn)
- Tan
- Transfer case encoder motor
- Transfer case shift control module (left side of i/p area, behind knee bolster, above parking brake assy)
- Transfer case shift control switch
- Trec fuse 30a
- Underhood fuse block (left side of engine compt)
Transfer Case Wiring Diagram, 2-Speed Manual for GMC Cab & Chassis Sierra 2004 3500
List of elements for Transfer Case Wiring Diagram, 2-Speed Manual for GMC Cab & Chassis Sierra 2004 3500:
- (in engine harness) s165
- (w/ allison transmission)
- 4wd fuse 15a
- 4wd indicator lamp
- Data link connector (under left side of dash below steering column)
- Dsl(ecm) gas (pcm)
- E2 c1
- Electronic brake control module (on left side of inner frame)
- Except seo
- Front axle actuator
- G110 (on left front body mount)
- Hot in run
- Hot in run or start
- I/p fuse block (lower left side of dash)
- Ign e fuse 10a
- Instrument panel cluster
- Logic
- Pnk
- Powertrain control module (gas engines) or engine control module (diesel) (left front of engine compt)
- Seo
- Seo ign fuse 10a
- Splice pack sp205 (in i/p harn)
- Transfer case shift control switch (on top of transfer case)
- Transmission control module (w/ allison trans) (left front of engine compt)
- Underhood fuse block (left side of engine compt)
Transfer Case Wiring Diagram, Selectable for GMC Cab & Chassis Sierra 2004 3500
List of elements for Transfer Case Wiring Diagram, Selectable for GMC Cab & Chassis Sierra 2004 3500:
- (left front of engine compt) powertrain control module
- (on left front body mount) g110
- +5v ref
- 4 lo
- 4-hi ind
- 4-lo ind
- 4wd fuse 15a
- 4wd indicator lamp
- 4wd lo sig
- 4wd sw sig
- Awd
- Battery
- Channel a
- Channel b
- Channel c
- Channel p
- Class ii data
- Data link connector (below left side of dash)
- Encoder low
- Except seo
- G200 (near right "a" pillar)
- Ground
- Hot at all times
- Hot in run
- Hot in run or start
- Ign e fuse 10a
- Illumination
- Instrument panel cluster
- Interior lights system
- Left i/p fuse block (behind lower left side of dash)
- Logic
- Motor ctrl a
- Motor ctrl b
- Nca
- Neutral ind
- Pnk
- Red
- Right i/p fuse block (lower c4
- Right side of dash)
- Seo
- Seo ign fuse 10a
- Shift motor
- Splice pack sp205 (behind left i/p fuse block)
- Tcs
- Transfer case encoder motor
- Transfer case shift control module (behind headlamp switch)
- Transfer case shift control switch
- Trec fuse 30a
- Underhood fuse block (left side of engine compt, near battery)
6.6L VIN 2
6.6L VIN 2, A/T Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for 6.6L VIN 2, A/T Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- (in engine harness)
- (left front of engine compt) engine control module
- (right side of engine block) g102
- 12 volt ref
- 4wd circuit (transfer case controls)
- 4wd low sig
- Allison transmission
- B11
- B12
- Battery
- Body control module (below steering column)
- Brake fuse 10a
- C1 vss adapter (4wd) (left side of trans)
- C12 c1
- C12 c2
- Can data hi
- Can data lo
- Class 2 data
- Class 2 serial data
- Computer data lines system
- D5 c1
- Data link connector (below steering column)
- E11
- E4 c1
- Engine controls system
- Except seo
- F10
- F7 c1
- G203 (behind left side of dash)
- Ground
- Hot at all times
- Hot in run
- Hot in run acc & start
- I/p fuse block (lower left side of dash)
- I/p relay block (near left kick panel)
- Ign 0 fuse 10a
- Ignition
- Input speed sensor (in transmission)
- Instrument panel cluster (ipc)
- Ipc/dic fuse 10a
- Iss high
- Iss low
- Low ref
- Main line pres
- Malfunction indicator lamp
- Mil control
- Mil signal
- On/off sol a
- On/off sol b
- On/off sol c
- On/off solenoids
- P/n
- Park/neutral position switch (left side of transmission)
- Park/neutral sig
- Pcm b fuse 20a
- Pcs a high
- Pcs a low
- Pcs b high
- Pcs b low
- Pnk
- Pnk s125
- Pressure switch manifold
- Pto status
- Red
- Red c
- Rev
- Reverse sig
- S103
- S164
- S217
- Seo
- Seo b1 fuse 15a
- Sig hi-front
- Signal high - front
- Solenoid g
- Splice pack sp205 (in i/p harness)
- Stoplamp switch (on brake pedal bracket)
- Tan d
- Tcc brake sw
- Tcc pwm
- Tcc pwm solenoid
- Tcc sol
- Tfp signal c
- Tfp signal d
- Tfp signal e
- Tft sensor
- Tft signal
- Tow/haul switch (if equipped)
- Tr signal a
- Tr signal b
- Tr signal c
- Tr signal p
- Trans id
- Trans mil request
- Transmission control module (left front of engine compt)
- Trim solenoids
- Tss return
- Tss signal
- Turbine speed sensor (in transmission)
- Underhood fuse block (left side of engine compt)
- Vehicle speed sensor (2wd: left rear of transmission) (4wd: left side of transfer case)
- Vss high
- Vss low
WARNING SYSTEMS
Warning Systems Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Warning Systems Wiring Diagram (1 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- (behind left side of dash, near left "a" pillar) g203
- (on left "b" pillar) g305
- (on right "b" pillar) g306
- 5v reference
- A12
- Accessory voltage
- Anl/drl defeat
- Auto
- B11
- B12
- Battery
- Body control module (bcm) (on lower left side of dash, below steering column)
- Crew cab only
- D12
- Dimming input
- Dimming return
- E11
- E12
- G203 (behind left side of dash, near left "a" pillar)
- Ground
- Ground distribution system
- Head
- Headlamp switch
- Headlamps on signal
- Hot at all times
- Hot in acc & run
- Hot in acc, run & start
- Hot in run & start
- I/p relay block (near left kick panel)
- Ignition 0 voltage
- Ignition 1 voltage
- Ignition key alarm switch
- Key in ignition switch
- Left front door ajar sw
- Left i/p fuse block (on lower left side of dash)
- Left rear door ajar sw
- Left rear door latch assembly
- Park
- Park brake sw signal
- Park brake switch (part of park brake assembly)
- Park lamp on signal
- Pnk
- Power distribution system
- Right front door ajar sw
- Right rear door ajar sw
- Right rear door latch assembly
- S212 (in i/p harness)
- S217
- Serial data
- Tbc 2a fuse 15a
- Tbc 2b fuse 15a
- Tbc 2c fuse 15a
- Tbc accy fuse 10a
- Tbc batt fuse 10a
- Tbc ign 0 fuse 10a
- Tbc ign 1 fuse 10a
- Underhood fuse block (at left side of engine compartment)
Warning Systems Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2004 3500
List of elements for Warning Systems Wiring Diagram (2 of 2) for GMC Cab & Chassis Sierra 2004 3500:
- (behind right side of dash, near right "a" pillar) g200
- Base
- Computer data lines system
- Data link connector (dlc) (partial) (under left side of dash, below steering column)
- Door ajar switch
- Driver door latch assembly
- Driver door module (ddm) (in driver's door)
- Driver seat belt switch
- Except 6.6l vin 2 6.6l vin 2
- Exterior lights system
- Front passenger door latch assembly
- Front passenger door module (fpdm) (in right front door)
- Ground distribution system
- Ign
- Inflatable restraint sensing & diagnostic module (sdm) (under left front seat)
- Instrument panel cluster (ipc)
- Left door ajar sw
- Left i/p fuse block (on lower left side of dash)
- Left seat belt
- Left turn
- Logic
- Low reference
- Pnk
- Powertrain control module (pcm) or engine control module (ecm) (on left front of engine compartment)
- Radio
- Right i/p fuse block (on lower right side of dash)
- Right turn
- Seat belt
- Serial data
- Sp205 (in i/p harness)
- Tan
- W/convenience package comfort & decor level 3
- W/memory seats
WIPER/WASHER
Wiper/Washer Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500
List of elements for Wiper/Washer Wiring Diagram for GMC Cab & Chassis Sierra 2004 3500:
- Accessory voltage
- G100 (on left front body mount)
- G200 (near right "a" pillar)
- G203 (near left "a" pillar)
- Ground
- Hot at all times
- Hot in run and acc
- Left i/p fuse block (behind lower left side of dash)
- Lsd
- Mist
- Off
- Pnk
- Pulse
- Red
- S100
- S202
- S217
- Tan
- Turn signal multi- function switch
- Underhood fuse block (on left side of engine compt)
- W/s wash fuse 15a
- W/s wash relay
- W/s wiper fuse 25a
- Wash
- Windshield washer fluid pump (on washer fluid reservoir)
- Windshield washer relay cntrl
- Windshield wiper high signal
- Windshield wiper motor module (left side of cowl)
- Windshield wiper switch signal
- Windshield wiper/ washer switch