Jonathan Yarden Mar 25, 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: 1998
Instrument Panel Fuse Block
The fuse block is at the driverâs end of the instrument panel.
| Fuse/Circuit breaker | Circuit protected |
| A | â |
| B | â |
| 1 | Headlamp Switch, Body Control Module, Headlamp Relay |
| 2 | Cigarette Lighter, Data Link Connector |
| 3 | Cruise Control Module and Switch, Body Control Module, Heated Seats |
| 4 | Gages, Body Control Module, Instrument Panel Cluster |
| 5 | Interior Lights |
| 6 | â |
| 7 | Power Outside Mirror, Power Lock Relay |
| 8 | Courtesy Lamps, Battery Run-Down Protection |
| 9 | HVAC Control Head (Manual) |
| 10 | Turn Signal |
| 11 | Cluster, Engine Control Module |
| 12 | Parking Lamps, Power Window Switch, Body Control Module, Ashtray Lamp |
| 13 | Auxiliary Power |
| 14 | Power Locks Motor |
| 15 | 4WD Switch, Engine Controls (VCM, PCM, Transmission) |
| 16 | Supplemental Inflatable Restraint, SDM Module |
| 17 | Front Wiper |
| 18 | â |
| 19 | Radio Battery |
| 20 | â |
| 21 | HVAC (Manual), HVAC IÂ (Automatic), WAC Sensors (Automatic) |
| 22 | Anti-Lock Brakes |
| 23 | Rear Wiper |
| 24 | Radio, Ignition |
Engine Cormpartment Fuse Block
| Name | Circuit protected |
| TRL TRN | Trailer Left Turn |
| TRR TRN | Trailer Right Turn |
| TRL B/U | Trailer Back-up Lamps |
| VEH B/U | Vehicle Back-up Lamps |
| RT TURN | Right Turn Signal Fron |
| LT TURN | Left Turn Signal Front |
| LT TRN | Left Turn Signal Rear |
| RT TRN | Right Turn Signal Rear |
| RR PRK | Right Rear Parking Lamps |
| TRL PRK | Trailer Parking Lamps |
| LT HDLP | Left Headlamp |
| RT HDLP | Right Headlamp |
| FR PRK | Front Parking Lamps |
| INT BAT | I/P Fuse Block Feed |
| ENG 1 | Engine Sensors/Solenoids, MAP, CAM, PURGE, VENT |
| ECM B | Engine Control Module, Fuel Pump, Module, Oil Pressure |
| ABS | Anti-Lock Brake System |
| ECM 1 | Engine Control Module Injectors |
| HORN | Horn |
| BTSI | Brake-Transmission Shift Interlock |
| B/U LP | Back-up Lamps |
| A/C | Air Conditioning |
| RAP | Retained Accessory Power |
| 02 | Oxygen Sensor |
| IGN B | Column Feed, IGN 2, 3,4 |
| DRL | Daytime Running Lamps |
| FOG LP | Fog Lamps |
| IGN A | Starting and Charging IGN 1 |
| STUD #2 | Accessory Feeds, Electric Brake |
| PARKLP | Parking Lamps |
| LR PRK | Left Rear Parking Lamps |
| IGN C | Starter Solenoid, Fuel Pump, PRNDL |
| HTDSEAT | Heated Seat |
| ATC | Electronic Transfer Case |
| RRDFOG | Rear Defogger |
| HVAC | HVAC System |
| TRCHMSL | Trailer Center High-Mount Stop Lamp |
| RR W/W | Rear Window Wiper |
| CRANK | Clutch Switch, NSBU Switch |
| HAZLP | Hazard Lamps |
| VECHMSL | Vehicle Center High-Mount Stop Lamp |
| HTDMIR | Heated Mirror |
| STOPLP | Stoplamps |
| TBC | Truck Body Computer |
WARNING:Â Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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