GMC C-Series (Second Generation; 1990 – 1999) – fuse box diagram
Year of production: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999
Instrument Panel Circuit Breaker Block
This fuse block is in the lower portion of the instrument panel, to the left of the steering column.
Name | Circuits protected |
HYD BRK | Brake Pump Motor Relay |
HYD BRK | Brake Alarm Module |
B/U IGN3 | Fuel Filter Relay, Blower Motor Relays, ABS Power Relay, Back-Up Lamps, Auxiliary Wiring Relay, IGN 3 Relay, Power Window Relay, Vehicle Interface Module, Transmission Temperature Gage |
STOP | Stoplamps |
WASH/WIPE | Windshield Wipers/Washer, Accessory Relay |
DOME/PNL | Dome Lamp, Radio Receiver, Instrument Panel Lights, A/C Controller, Headlamp/Seatbelt Module |
BLOWER | Blower Motor |
A/C | A/C Clutch Compressor, A/C Controller |
TRN/HAZ | Turn Signals, Hazard Flashers |
CHAS | Exhaust Brake, Air Suspension Dump Valve, Air Dryer, HYD ABS ECHU |
PARK LP | Auxiliary Wiring, Air Conditioner Controls, Parking Lamps, Turn Signals, Taillamps, Stoplamps, Marker Lamps, Trailer Running Lamps, Lighted Mirrors, Radio Receiver, Mirror Clearance Lamps |
HORN | Horn/Diagnostic Connector |
PRK BRK | Parking Brake Module |
FUEL | Heated Fuel Filter (Diesel Engines) or Fuel Pump (Gasoline Engines) |
AXLE | Heated Mirrors, Radiator Shutters, Two-Speed Axle Motor, Two-Speed Axle Switch |
MRKR LP | Roof Marker Lamps, Trailer Marker Lamps, Marker Lamp Relay |
CIG/AUX | Cigarette Lighter, Auxiliary Power Jacks |
AUX | Auxiliary Wiring Relay |
IGN RLY/VIN | Vehicle Interface Module (Diesel Engines) or Generator, Coil, Injectors (Gasoline Engines) |
WDO | Power Windows |
CRNK | Starter Relay |
IGN SW | Instrument Panel Cluster Telltales |
AUX | Auxiliary Wiring |
RDO | Radio, Auxiliary Wiring |
DR LK | Power Door Locks |
Maxi-Fuse Block
Name | Circuits/Circuit Breakers Protected |
STP/HAZ TURN | Stop Lamp, Turn Signal/Hazard Lights, Fuel, Ignition Relay (Gasoline Engines) |
IGN SW3 | Air Conditioner, Ignition Switch, Axle, Chassis |
INT/EXT LIGHTS | Parking Lamps, Dome/Panel Lights |
HEAD LAMP | Headlamps, Daytime Running Lamps |
AUX WRG | Auxiliary, Park Brake |
IGN SW1 | Ignition Switch, Wash/Wipe, Crank, Radio |
HYD PUMP | Hydraulic Brake, Brake Pump Motor |
HYD ABS | EHCU |
PWR WDO/LCKS | Window, Door Locks |
PARK BRK | Parking Brake Motor |
BLOWER HORN | Blower, Horn, Cigarette Lighter/Auxiliary |
FUEL/ENGINE | Empty |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.