Jonathan Yarden Mar 25, 2021 · 5 min. read
In this article you will find a description of fuses and relays Chevrolet,
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: 2002
Instrument panel fuse block
| Name | Circuit protected |
| HVAC 1 | Climate Control System |
| IGN 3 | Ignition, Power Seats |
| BRAKE | Anti-Lock Brake System |
| HTR A/C | Climate Control System |
| IGN 0 | PRND321 Display, Odometer, PCM |
| CRUISE | Cruise Control, Instrument Cluster |
| 4WD | Four-Wheel Drive System, Auxiliary Battery |
| TURN | Exterior Lamps, Turn Signals, Hazard Lamps |
| RR WIPER | Rear Window Wiper |
| WS WPR | Windshield Wipers |
| SEO IGN | Special Equipment Option, Ignition, OnStar |
| ILLUM | Interior Lamps |
| IGN 1 | Ignition, Instrument Panel |
| SEO ACCY | Special Equipment Option Accessory, Cellular Telephone |
| L BODY | Retained Accessory Power Relay |
| CRANK | Starting System |
| AIR BAG | Air Bag |
| MIR/LOCK | Power Mirrors, Power Door Locks |
| SEAT | Power Seat Circuit Breaker |
| DR LOCK | Power Door Locks |
| RAP #1 | Retained Accessory Power Relay |
| LOCK | Power Door Locks |
| INT PRK | Interior Lamps |
| UNLOCK | Power Door Locks |
| DRV UNLOCK | Power Door Lock Relay |
| L DOOR | Power Door Lock Relay |
| PRW WDO | Power Window Circuit Breaker |
| RDO 1 | Audio System, OnStar |
| RAP #2 | Rear Power Windows, Sunroof, Radio, OnStar |
| LOCK | Power Door Lock Relay |
| UNLOCK | Power Door Lock Relay |
Center Instrument Panel Utility Block
The center instrument panel utility block is located underneath the instrument panel, to the left of the steering column.
| Relay Name | Circuit protected |
| SEO | Special Equipment Option |
| HTD ST | Heated Seats |
| SPARE | Not Used |
| VANITY | Headliner Wiring |
| TRAILER | Trailer Brake Wiring |
| PWR ST | Power Seats |
| SPARE | Not Used |
| UPF | Upfitter |
| PARK LAMP | Parking Lamps (Relay) |
| FRT PRK EXPT* | Not Used |
| SPARE 2 | Not Used |
| PUDDLE LP | Puddle Lamps |
| SL RIDE | Not Used |
| SPARE 3 | Not Used |
| INADAV PWR | Interior Lights Feed (Relay) |
| CTSY LP | Courtesy Lamps (Relay) |
| CEL PHONE | Cellular Telephone Wiring |
Underhood Electrical Center
The underhood electrical center is located on the driver’s side of the engine compartment near the battery.
| Name | Circuit protected |
| STUD #1 | Accessory Power/Trailer Wiring Feed/Load Leveling |
| ABS | Anti-Lock Brakes |
| IGN A | Ignition Switch |
| AIR | A.I.R. System |
| RAP #1 | Retained Accessory Power, Power Mirrors, Power Door Locks, Power Seat(s) |
| IGN B | Ignition Switch |
| RAP #2 | Retained Accessory Power/Rear Power Windows, Sunroof, Radio |
| STUD #2 | Accessory Power/Trailer Wiring Brake Feed |
| TRL R TRN | Right Turn Signal Trailer Wiring |
| TRL L TRN | Left Turn Signal Trailer Wiring |
| IGN 1 | Ignition, Fuel Controls |
| INJ B | Ignition, Fuel Controls (Relay) |
| STARTER | Starter (Relay) |
| PARK LP | Parking Lamps |
| FRT HVAC | Climate Control System |
| STOP LP | Exterior Lamps, Stoplamps |
| ECM 1 | PCM |
| CHMSL | Center High Mounted Stoplamp |
| VEH STOP | Stoplamps, Cruise Control |
| TRL B/U | Backup Lamps Trailer Wiring |
| INJ A | Fuel Controls, Ignition |
| RR HVAC | Rear HVAC |
| VEH B/U | Vehicle Backup Lamps |
| ENG 1 | Engine Controls, Canister Purge, Fuel System |
| ETC | Electronic Throttle Control |
| IGN E | A/C Compressor Relay, Rear Window Defogger, Daytime Running Lamps, A.I.R. System |
| B/U LP | Backup Lamps, Automatic Transmission Shift Lock Control System |
| ATC | Automatic Transfer Case |
| RR DEFOG | Rear Window Defogger, Heated Mirrors (Relay) |
| RTD | Autoride (Real Time Damping) |
| RR PRK | Right Rear Parking Lamps |
| ECM B | PCM |
| F/PMP | Fuel Pump (Relay) |
| O2 A | Oxygen Sensors |
| O2 B | Oxygen Sensors |
| LR PRK | Left Rear Parking Lamps |
| RR DEFOG | Rear Window Defogger, Heated Mirrors |
| HDLP | Headlamps (Relay) |
| TRL PRK | Parking Lamps Trailer Wiring |
| PRIME | Not Used |
| RT HDLP | Right Headlamps |
| DRL | Daytime Running Lamps (Relay) |
| HTD MIR | Heated Mirrors |
| LT HDLP | Left Headlamps |
| A/C | Air Conditioning |
| AUX PWR | Cigarette Lighter, Auxiliary Power Outlets |
| SEO 2 | Special Equipment Option Power, Power Seats, Aux Roof Mnt Lamp |
| SEO 1 | Special Equipment Option Power, Aux Roof Mnt Lamp, Cell Phone, Onstar |
| DRL | Daytime Running Lamps |
| A/C | A/C (Relay) |
| FOG LP | Fog Lamps |
| FOG LP | Fog Lamps (Relay) |
| RADIO | Audio System, Instrument Cluster, Climate Control System |
| CIGAR | Cigarette Lighter, Auxiliary Power Outlets |
| RT TURN | Right Turn Signals |
| BTSI | Automatic Transmission Shift Lock Control System |
| LT TURN | Left Turn Signals |
| FR PRK | Front Parking Lamps, Sidemarker Lamps |
| W/W PMP | Windshield Washer Pump |
| HORN | Horn (Relay) |
| IGN C | Ignition Switch, Fuel Pump, PRND321 Display, Crank |
| RDO AMP | Radio Amplifier |
| HAZ LP | Exterior Lamps, Hazard Lamps |
| EXP LPS | Not Used |
| HORN | Horn |
| CTSY LP | Interior Lamps |
| RR WPR | Rear Wipers |
| TBC | Body Control Module, Remote Keyless Entry, Headlamps |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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