POWER DISTRIBUTION – GMC Cab & Chassis C2500 1994 – SYSTEM WIRING DIAGRAMS

POWER DISTRIBUTION

Power Distribution Wiring Diagram, Diesel (1 of 4) for GMC Cab & Chassis C2500 1994

List of elements for Power Distribution Wiring Diagram, Diesel (1 of 4) for GMC Cab & Chassis C2500 1994:

• (pcm)
• 4wal module
• Accy
• Audio alarm module convenience center
• Auxillary cooling fan relay
• Brake switch
• Bulb test
• C10
• C100
• C103a
• C231
• C255
• C256
• Cigarette lighter
• Clutch pedal switch
• Conven- ience center
• Convenience center
• Crank fuse 5a
• Ctsy fuse 20a
• Daytime running lamps relay
• Dome lamp
• Drl fuse 15a
• Ecm-ign, turn b/u & gauges fuses
• Exc. suburban & utility
• Fuel pump relay
• Fuel pump relay
• Fuel pump/oil pressure
• Fuse block
• Fusible
• Fusible link
• G206 (at data link connector)
• Generator
• Glow plug controller
• Glow plugs
• Hazard flasher
• Headlight switch assembly
• High blower relay
• Horn relay convenience center
• Htr-a/c, rr hvac, 4wd & brake fuses
• Ignition switch
• Left battery
• Link
• Lock
• Low blower relay
• Medium blower relay
• Off
• Park lps fuse 20a
• Pnk
• Powertrain control module
• Pwr acc circuit breaker
• Radio
• Rear wheel antilock brake module
• Rear window release relay
• Rear window release switch
• Red
• Right battery
• Rr wpr, frt wpr, rdo fuses and and pwr wdo circuit breaker
• Rst 12ga
• Rst 18ga
• Run
• Start
• Starter motor solenoid
• Stop fuse 15a
• Suburban & utility
• Suburban & utility only
• Switch
• T/g rel fuse 25a
• Trans
• Trans fuse
• W/ auto
• W/ automatic transmission

Power Distribution Wiring Diagram, Diesel (2 of 4) for GMC Cab & Chassis C2500 1994

List of elements for Power Distribution Wiring Diagram, Diesel (2 of 4) for GMC Cab & Chassis C2500 1994:

• (suburban & crew cab only)
• C241
• C247
• C259
• C276a
• Convenience center
• Frt wpr fuse 25a
• Fuse block
• Fusible link
• Ignition switch
• In-line fuse 3a
• Left front power window switch
• Left power door lock switch
• Left power seat
• Left rear power window switch
• O r g
• Pnk
• Power acc circuit breaker 30a
• Power door lock relay
• Power outside mirror switch
• Pwr wdo circuit breaker 30a
• Radio
• Rdo fuse 10a
• Rear window defogger switch
• Rear wiper/ washer switch
• Red
• Right front power window switch
• Right power door lock switch
• Right rear power window switch
• Rr wpr fuse 25a
• Suburban & utilty only
• W h t
• Wiper motor module
• Wiper washer switch

Power Distribution Wiring Diagram, Diesel (3 of 4) for GMC Cab & Chassis C2500 1994

List of elements for Power Distribution Wiring Diagram, Diesel (3 of 4) for GMC Cab & Chassis C2500 1994:

• (four wheel antilock)
• (rear wheel antlock)
• 4wd fuse 25a
• A/c clutch relay
• A/c control module
• Antilock brake module
• Auxilliary heater-a/c front control
• Auxilliary heater-a/c logic module
• Auxilliary heater-a/c rear control
• B r n
• Brake fuse 15a
• C1
• C10
• C2
• C5
• Convenience center
• Electronic transmission 4-speed automatic w/overdrive
• Fuse block
• Fusible
• Glow plug control module
• Glow plug fuse 5a
• Heater blower switch
• Heavy duty electronic transmission 4-speed automatic w/overdrive
• High blower relay
• Htr-a/c fuse 25a
• Ignition switch
• Instrument cluster printed ciurcuit
• Interior lights system
• Left glow plugs
• Low blower relay
• Med blower relay
• Mode door motor
• Panel dimmer switch assembly (interior lights system)
• Pnk
• Pnl lps fuse 5a
• Powertrain control module
• R e d
• Right glow plugs
• Rr hvac fuse 25a
• Temp door motor
• Trans fuse 10a
• Transfer case switch
• Vehicle speed sensor buffer module
• W/ air conditioning

Power Distribution Wiring Diagram, Diesel (4 of 4) for GMC Cab & Chassis C2500 1994

List of elements for Power Distribution Wiring Diagram, Diesel (4 of 4) for GMC Cab & Chassis C2500 1994:

• (l49 & l56 engines only)
• (l56 & l65 only)
• Audio alarm module convenience center
• Auxiliary cooling fan relay
• B l u
• Backup lamp switch
• C278
• C290
• Convenience center
• Cruise control activator switch
• Cruise control module
• Daytime running lamps module (pickup only)
• Daytime running lamps relay
• Ecm-ign fuse 10a
• Egr vent solenoid
• Egr width modulated solenoid
• F/sol fuse 20a
• Fuel heater
• Fuel injection pump
• Fuse block
• Gauges fuse 20a
• Glow plug control module
• Ignition switch
• Instrument cluster printed circuit
• O r g
• Pnk
• Powertrain control module
• Pulse width modulated boost solenoid
• Rear defogger switch
• Sol fuse 5a
• Tcc/ stoplamp switch
• Turn signal flasher
• Turn b/u fuse 15a
• Water-in-fuel sensor

Power Distribution Wiring Diagram, Gasoline (1 of 4) for GMC Cab & Chassis C2500 1994

List of elements for Power Distribution Wiring Diagram, Gasoline (1 of 4) for GMC Cab & Chassis C2500 1994:

• (pcm)
• 4wal module
• Accy
• Audio alarm module convenience center
• Auxillary cooling fan relay
• Battery
• Brake switch
• Bulb test
• C10
• C103a
• C231
• C255
• C256
• Cigarette lighter
• Clutch pedal switch
• Conven- ience center
• Convenience center
• Crank fuse 5a
• Ctsy fuse 20a
• Daytime running lamps relay
• Dome lamp
• Drl fuse 15a
• Ecm-ign, turn b/u & gauges fuses
• Exc. suburban & utility
• Fuel pump relay
• Fuel pump/oil pressure
• Fuse block
• Fusible
• Fusible link
• G206 (at data link connector)
• Generator
• Hazard flasher
• Headlight switch assembly
• High blower relay
• Horn relay convenience center
• Htr-a/c, rr hvac, 4wd & brake fuses
• Ignition coil
• Ignition switch
• L03 & l05 engines w/ manual transmissions only
• Link
• Lock
• Low blower relay
• Medium blower relay
• Off
• Park lps fuse 20a
• Pnk
• Powertrain control module
• Powertrain control module (pcm)
• Pwr acc circuit breaker
• Radio
• Rear wheel antilock brake module
• Rear window release relay
• Rear window release switch
• Red
• Rr wpr, frt wpr, rdo fuses and and pwr wdo circuit breaker
• Rst 12ga
• Rst 18ga
• Run
• Start
• Starter motor solenoid
• Stop fuse 15a
• Suburban & utility
• Suburban & utility only
• Switch
• T/g rel fuse 25a
• Trans
• Trans & inj fuses
• Vin h&k manual trans only
• W/ auto
• W/ automatic transmission

Power Distribution Wiring Diagram, Gasoline (2 of 4) for GMC Cab & Chassis C2500 1994

List of elements for Power Distribution Wiring Diagram, Gasoline (2 of 4) for GMC Cab & Chassis C2500 1994:

• (suburban & crew cab only)
• C241
• C247
• C259
• C276a
• Convenience center
• Frt wpr fuse 25a
• Fuse block
• Fusible link
• Ignition switch
• In-line fuse 3a
• Left front power window switch
• Left power door lock switch
• Left power seat
• Left rear power window switch
• O r g
• Pnk
• Power acc circuit breaker 30a
• Power door lock relay
• Power outside mirror switch
• Pwr wdo circuit breaker 30a
• Radio
• Rdo fuse 10a
• Rear window defogger switch
• Rear wiper/ washer switch
• Red
• Right front power window switch
• Right power door lock switch
• Right rear power window switch
• Rr wpr fuse 25a
• Suburban & utilty only
• W h t
• Wiper motor module
• Wiper washer switch

Power Distribution Wiring Diagram, Gasoline (3 of 4) for GMC Cab & Chassis C2500 1994

List of elements for Power Distribution Wiring Diagram, Gasoline (3 of 4) for GMC Cab & Chassis C2500 1994:

• (four wheel antilock)
• (rear wheel antlock)
• 4wd fuse 25a
• A/c clutch relay
• A/c control module
• Antilock brake module
• Auxilliary battery relay
• Auxilliary heater-a/c front control
• Auxilliary heater-a/c logic module
• Auxilliary heater-a/c rear control
• B r n
• Brake fuse 15a
• C1
• C10
• C2
• C5
• Convenience center
• Electronic transmission 4-speed automatic w/overdrive
• Except vin z
• Fuse block
• Heated oxygen sensor
• Heater blower switch
• Heavy duty electronic transmission 4-speed automatic w/overdrive
• High blower relay
• Htr-a/c fuse 25a
• Ignition switch
• Inj fuse 10a
• Interior lights system
• Low blower relay
• Med blower relay
• Mode door motor
• Panel dimmer switch assembly (interior lights system)
• Pnk
• Pnl lps fuse 5a
• R e d
• Red
• Rr hvac fuse 25a
• Temp door motor
• Throttle body fuel injector a
• Throttle body fuel injector b
• Trans fuse 10a
• Transfer case switch
• Vehicle speed sensor buffer module
• Vin z only
• W/ air conditioning

Power Distribution Wiring Diagram, Gasoline (4 of 4) for GMC Cab & Chassis C2500 1994

List of elements for Power Distribution Wiring Diagram, Gasoline (4 of 4) for GMC Cab & Chassis C2500 1994:

• (lo3 & lo5 engines, light duty & yukon w/ lo5 engine)
• (suburban & utility only)
• (vin h &k light duty only)
• Air divert solenoid
• Air switching valve solenoid (vin n only)
• Audio alarm module convenience center
• Auxilliary cooling fan relay
• B l u
• Backup lamp switch
• C278
• C290
• Convenience center
• Cruise control activator switch
• Cruise control module
• Daytime running lamps module (pickup only)
• Daytime running lamps relay
• E15
• Ecm-ign fuse 10a
• Esc module
• Evaporative emission canister purge solenoid (w/ nrq)
• Exhaust gas recirculation solenoid valve
• F15
• Fuse block
• Gauges fuse 20a
• Heated oxygen sensor (vins h & k)
• Hot fuel handling module
• Ignition switch
• Instrument cluster printed circuit
• Linear egr regulator valve solenoid (w/ nrq)
• O r g
• Overspeed alarm module
• Pnk
• Powertrain control module
• Rear defogger switch
• Tcc/ stoplamp switch
• Trottle actuator solenoid (vin n only)
• Turn signal flasher convenience center
• Turn b/u fuse 15a
• Vin n only
• Vins h & k only
• Vins h & k w/ automatic transmissions & vins n & z
• Vins h & k w/ manual transmissions