Jonathan Yarden Oct 06, 2021 · 5 min. read
In this article you will find a description of fuses and relays GMC,
with photos of block diagrams and their locations.
Highlighted the cigarette lighter fuse (as the most popular thing people look for).
Get tips on blown fuses, replacing a fuse, and more.
Year of production: 2000
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 |
| ENG1 | Engine Control Module (Diesel Engines), Canister Purge, Oxygen Sensors (Gasoline Engines) |
| 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, Stoplamp Relay |
| WASH/WIPE | Windshield Wipers/Washer, Accessory Relay |
| DOME/PNL | Dome Lamp, Radio Lighting Relay, Instrument Panel Lights, A/C Controller, Headlamp/Seatbelt Module, Engine Control Module (Gasoline Engines) |
| BLOWER | Blower Motor |
| A/C | A/C Clutch Compressor, A/C Controller, A/C Clutch Relay |
| TRN/HAZ | Turn Signals, Hazard Flashers |
| CHAS | Exhaust Brake, Air Suspension Dump Valve, Air Dryer, HYD ABS ECU, Dual Fuel Tank Module, Auxiliary Fuel Pump |
| ENG2 | Ignition Coils, Fuel Injectors Even Bank (Gasoline Engines) |
| PARK LP | Auxiliary Wiring, Parking Lamps, Taillamps, Marker Lamps, Trailer Running Lamps, Lighted Mirrors |
| HORN | Horn/Diagnostic Connector |
| PRK BRK | Parking Brake Module, Parking Brake Solenoid |
| 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-1 | Auxiliary Wiring (Ignition) |
| IGN RLY/VIN | Vehicle Interface Module (Diesel Engines), Mass Air Flow, Engine Control Module, Electronic Throttle Control (Gasoline Engines) |
| WDO | Power Windows |
| CRNK | Starter Relay, Ether Start (Diesel Engines) |
| AUX-B | Auxiliary Wiring (Battery) |
| RDO | Radio, Auxiliary Wiring |
| DR LK | Power Door Locks |
| IGN SW | Instrument Panel Cluster Telltales, Daytime Running Lamp Module, Daytime Running Lamp Relay, Alarm Module, Ignition 1 Relay |
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 | Hydraulic ABS |
| PWR WDO/LCKS | Window, Door Locks |
| PARK BRK | Parking Brake Motor |
| BLOWER HORN | Blower, Horn, Cigarette Lighter/Auxiliary |
| FUEL/ENGINE | Ignition Coils, Fuel Injectors (Gasoline Engines) |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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