All Wiring Diagrams for GMC Pickup K1991 3500

COOLING FAN

Auxiliary Cooling Fan Wiring Diagram for GMC Pickup K1991 3500

List of elements for Auxiliary Cooling Fan Wiring Diagram for GMC Pickup K1991 3500:

• Auxiliary coolant fan
• Auxiliary cooling fan relay (on left side of engine)
• Auxiliary cooling fan switch (on right side of engine)
• Fuse block (left side of i/p)
• G106 (behind right headlamp, on radiator support)
• Gauge fuse 20a
• Hot at all times
• Hot in run or start
• Red

DEFOGGERS

Defogger Wiring Diagram for GMC Pickup K1991 3500

List of elements for Defogger Wiring Diagram for GMC Pickup K1991 3500:

• (below right side of rear window)
• Convenience center (left side of steering column)
• Defogger
• Defogger control
• Fuse block (left side of i/p)
• G202 (left side of i/p)
• G307
• Gages fuse 20a
• Hot at all times
• Hot in run or start
• Interior lights system
• On indicator
• On/off
• Panel light
• Pwr acc (or acc/batt) circuit breaker 30a
• Timer

HORN

Horn Wiring Diagram for GMC Pickup K1991 3500

List of elements for Horn Wiring Diagram for GMC Pickup K1991 3500:

• (front of right front fender) g101
• (left radiator support) g108
• Base
• Convenience center (left side of i/p)
• Fuse block (left side of i/p)
• Horn relay
• Horn switch
• Hot at all times
• Left horn (below left headlamp)
• Park lp fuse 20a
• Right horn (front of center radiator support)
• V22 only

POWER DOOR LOCKS

Power Door Lock Wiring Diagram, 2 Door for GMC Pickup K1991 3500

List of elements for Power Door Lock Wiring Diagram, 2 Door for GMC Pickup K1991 3500:

• (under left side of i/p)
• Acc-batt circuit breaker 30a
• Convenience center
• Fuse block
• G202 (at dlc connector)
• Hot at all times
• Left front door lock motor
• Left front door lock switch
• Lock
• Right front door lock motor
• Right front door lock switch
• Tan
• Unlock

POWER WINDOWS

Power Window Wiring Diagram, 2 Door for GMC Pickup K1991 3500

List of elements for Power Window Wiring Diagram, 2 Door for GMC Pickup K1991 3500:

• (under left side of dash)
• Acc-ign circuit breaker (exc 1994) 30a
• C247
• C503
• C507
• Convenience center
• Fuse block
• G206 (at dlc connector)
• Hot in acc or run
• Left front power window motor
• Left front switch
• Left power window master switch
• Pnk
• Pwr-wdo circuit breaker (1994) 30a
• Right front power window motor
• Right front switch
• Right front window switch
• Tan

RADIO

2-Speaker System Wiring Diagram for GMC Pickup K1991 3500

List of elements for 2-Speaker System Wiring Diagram for GMC Pickup K1991 3500:

• (ex 1994) (1994)
• (ex. 1991)
• Antenna
• Antenna input
• Coaxial cable
• Ctsy fuse 20a
• Dimmer
• Fuse block (under left side of dash)
• G206 (center of dash)
• Ground
• Hot at all times
• Hot in accy or run
• Ign
• Interior lights system
• Left front speaker
• Lt frt spkr
• Memory(bat)
• Park lamp
• Radio
• Radio fuse 10a 15a
• Right front speaker
• Rt frt spkr
• Tan

AM/FM Stereo for GMC Pickup K1991 3500

List of elements for AM/FM Stereo for GMC Pickup K1991 3500:

• (ex 1994) (1994)
• Antenna
• Antenna out
• Battery
• C243
• C244
• C247
• C248
• C251
• Cassette deck
• Ctsy fuse 20a
• Data
• Dimmer
• Fuse block (under left side of dash)
• G206 (center of dash)
• Graphic equalizer
• Ground
• Hi ground
• Hot at all times
• Hot in accy or run
• Ignition
• Interior lights system
• Left audio
• Left front speaker
• Left rear speaker
• Lf (+)
• Lf (-)
• Lo ground
• Lr (+)
• Lr (-)
• Mem (data)
• Memory
• Mute
• Park lamp
• Pnk
• Power antenna system
• Radio control head
• Radio fuse 10a 15a
• Radio receiver
• Red
• Rf (+)
• Rf (-)
• Right audio
• Right front speaker
• Right rear speaker
• Rr (+)
• Rr (-)
• Tan
• Tape on
• Volt

STARTING/CHARGING

Charging Wiring Diagram for GMC Pickup K1991 3500

List of elements for Charging Wiring Diagram for GMC Pickup K1991 3500:

• (right inner fender near battery) g101
• Battery
• Fuse block (left side of dash)
• G110 (left front of engine)
• G119 (right front of engine)
• Gages fuse 20a
• Gen indicator
• Generator
• Hot in start or run
• Instrument cluster
• Junction block (rear of engine compt)
• Left battery (w/ dual batteries or diesel)
• Red
• Starting system

Starting Wiring Diagram for GMC Pickup K1991 3500

List of elements for Starting Wiring Diagram for GMC Pickup K1991 3500:

• A/t
• Acc
• Battery
• Clutch pedal position switch (top of clutch pedal)
• Crank fuse (1993)
• G101 (right inner fender near battery)
• G110 (left front of engine)
• G119 (right front of engine)
• Hot at all times
• Ignition switch
• Left battery (w/ dual batteries or diesel)
• Lock
• M/t
• Off
• Power distribution system
• Run
• Start
• Starter motor

WIPER/WASHER

2-Speed Wiper/Washer Wiring Diagram for GMC Pickup K1991 3500

List of elements for 2-Speed Wiper/Washer Wiring Diagram for GMC Pickup K1991 3500:

• Fuse block
• G104 (on left radiator support)
• G123 (right rear of engine compt)
• High speed
• Hot in accy or run
• Low speed
• Mechanical arm
• Off
• Park switch
• Pnk
• Washer pump motor
• Washer switch
• Windshield wiper motor module
• Wiper fuse 25a
• Wiper/ washer switch

Interval Wiper/Washer Wiring Diagram for GMC Pickup K1991 3500

List of elements for Interval Wiper/Washer Wiring Diagram for GMC Pickup K1991 3500:

• Control area
• Delay
• Delay/ speed/ wash control
• Fuse block
• G104 (on left radiator support)
• G123 (right rear of eng compt)
• Hot in accy or run
• Ign
• Low
• Max
• Min
• Mist
• Off
• Park switch
• Pnk b
• Pulse switch
• Washer motor
• Washer switch
• Windshield wiper motor module (center rear of engine compt)
• Wiper fuse 25a
• Wiper/ washer switch