Diagram sections — 8 (13 total)
COOLING FAN DEFOGGERS HORN POWER DOOR LOCKS POWER WINDOWS RADIO STARTING/CHARGING WIPER/WASHER
COOLING FAN Auxiliary Cooling Fan Wiring Diagram for Chevrolet CHD 1991 3500 List of elements for Auxiliary Cooling Fan Wiring Diagram for Chevrolet CHD 1991 3500: 9 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 Chevrolet CHD 1991 3500 List of elements for Defogger Wiring Diagram for Chevrolet CHD 1991 3500: 16 (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 Chevrolet CHD 1991 3500 List of elements for Horn Wiring Diagram for Chevrolet CHD 1991 3500: 12 (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 Chevrolet CHD 1991 3500 List of elements for Power Door Lock Wiring Diagram, 2 Door for Chevrolet CHD 1991 3500: 13 (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 Door Lock Wiring Diagram, 4 Door for Chevrolet CHD 1991 3500 List of elements for Power Door Lock Wiring Diagram, 4 Door for Chevrolet CHD 1991 3500: 19 Acc/batt circuit beaker 30a Convenience center (behind left side of i/p) Door lock relay (under i/p, right side of brake pedal bracket) Fuse block (behind left side of i/p) G202 (left side of i/p) Hot at all times Left front door lock motor Left front door lock switch Left rear door lock motor Lock Rear door lock motor (suburban only) Relay Right front door lock motor Right front door lock switch Right rear door contactor Right rear door lock motor Tan Unlock Unlock relay
POWER WINDOWS Power Window Wiring Diagram, 2 Door for Chevrolet CHD 1991 3500 List of elements for Power Window Wiring Diagram, 2 Door for Chevrolet CHD 1991 3500: 18 (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 Power Window Wiring Diagram, 4 Door for Chevrolet CHD 1991 3500 List of elements for Power Window Wiring Diagram, 4 Door for Chevrolet CHD 1991 3500: 27 (at dlc connector) (under left side of dash) Acc-ign circuit breaker (exc 1994) 30a C506 C507 Convenience center Fuse block G206 Gauges fuse 20a Hot in acc or run Hot in run or start Left front power window motor Left front window Left rear power window motor Left rear window Left rear window switch Master window switch Pnk Pwr-wdo circuit breaker (1994) 30a Right front power window motor Right front window Right front window switch Right rear power window motor Right rear window Right rear window switch Switch illumination lamp Tan
RADIO 2-Speaker System Wiring Diagram for Chevrolet CHD 1991 3500 List of elements for 2-Speaker System Wiring Diagram for Chevrolet CHD 1991 3500: 23 (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 Chevrolet CHD 1991 3500 List of elements for AM/FM Stereo for Chevrolet CHD 1991 3500: 50 (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 Chevrolet CHD 1991 3500 List of elements for Charging Wiring Diagram for Chevrolet CHD 1991 3500: 14 (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 Chevrolet CHD 1991 3500 List of elements for Starting Wiring Diagram for Chevrolet CHD 1991 3500: 18 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 Chevrolet CHD 1991 3500 List of elements for 2-Speed Wiper/Washer Wiring Diagram for Chevrolet CHD 1991 3500: 15 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 Chevrolet CHD 1991 3500 List of elements for Interval Wiper/Washer Wiring Diagram for Chevrolet CHD 1991 3500: 21 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
