Jonathan Yarden May 06, 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: 2000, 2001, 2002, 2003, 2004, 2005, 2006
Engine compartment fuse box
| No. | A | Fuse Name | Usage |
| Ef1 | 30 | HVAC BLWR | Blower Relay |
| Ef2 | 60 | BCM BATT | BCM |
| Ef3 | 60 | ABS | EBCM |
| Ef4 | 30 | IGN1 | Ignition Switch |
| Ef5 | 20 | PWR WIDW | Driver’s Power Window/Door Lock Switch |
| Ef6 | 20 | COOL FAN HI | Cooling Fan High Relay |
| Ef7 | 20 | COOL FAN LOW | Cooling Fan Low Relay |
| Ef8 | 30 | ST/IG2 | Ignition Switch, Starter Relay |
| Ef9 | 15 | SPARE | Spare |
| Ef10 | 10 | SPARE | Spare |
| Ef11 | 20 | SPARE | Spare |
| Ef12 | 25 | SPARE | Spare |
| Ef13 | 30 | SPARE | Spare |
| Ef14 | 10 | ABS WARNING | Not Used |
| Ef15 | 20 | S/ROOF | Sun Roof Assembly |
| Ef16 | 15 | ABS | EBCM, ABS Oil Feeding Connector |
| Ef17 | 15 | HVAC BLWR | Head Lamp-LH/RH |
| Ef18 | 20 | DRIVER’S PWR WIDW | Safety Power Window Assembly |
| Ef19 | 10 | PWR MIRROR | Multi-Function Switch |
| Ef20 | 10 | ILLUM RT | Head Lamp-RH, Parking Lamp-RH, Tail Lamp-RH |
| Ef21 | 15 | BCM | BCM |
| Ef22 | 25 | IP FUSE | I/P Fuse Block |
| Ef23 | 20 | STOP LAMPS | Brake Switch |
| Ef24 | 10 | ILLUM LT | Head Lamp-LH, Parking Lamp-LH, Tail Lamp-LH, License Lamp |
| Ef25 | 30 | PWR SEAT | Driver’s Power Seat Switch |
| Ef26 | 20 | FUEL | Fuel Pump Module |
| Ef27 | 15 | ECM | ECM, Engine Main Relay, Automatic Transaxle |
| Ef28 | 20 | IGN COIL | 1~6 Ignition Coil |
| Ef29 | 15 | HORN | Horn Relay |
| Ef30 | 15 | ENG2 | 1~6 Injector, VSS, Canister Purge Solenoid valve |
| Ef31 | 20 | ENG3 | Not Used |
| Ef32 | – | – | – |
| Ef33 | 15 | ENG1 | Petrol: EGR Solenoid Valve, Alternator, ECM, VIM Solenoid Valve, Oxygen Sensor, CMP Sensor, MAF Sensor, Canister Vent Solenoid Valve Diesel: Booster Pressure Actuator, CMP Sensor, Throttle Plate Actuator, EGR Solenoid, Fuel Heater Relay, WIF Sensor, Glow Plug Control Unit |
| Ef34 | 15 | FRT FOG | Front Fog Lamp Relay |
| Ef35 | 10 | LOW BEAM LT | Head Lamp-LH |
| Ef36 | 20 | PWR AMP | Power Amplifier |
| Ef37 | 10 | LOW BEAM RT | Head Lamp-RH, Multi-Function Switch |
| Ef38 | – | – | – |
| Ef39 | 10 | A/C CMPRSR | A/C Compressor Relay |
Instrument Panel Fuse Block
| No. | A | Fuse Name | Usage |
| F1 | 10 | CLUSTER2 | I/P Cluster, Information Display Unit, BCM, RKE Module |
| F2 | 25 | WIPER | Wiper/Washer Switch, Wiper Motor, Rain-Sensing Unit |
| F3 | 15 | ECU | Not Used |
| F4 | 10 | HVAC | BCM, Blower Relay, MTC/FATC Switch, Mode Actuator, Recirculation Actuator |
| F5 | 10 | CLOCK | Front Room Lamp/Sun Roof Switch, BCM, Digital Clock |
| F6 | 10 | RADIO | Audio, Navigation Module |
| F7 | 20 | HEATING MAT | Heating Mat Switch-Driver/Passenger |
| F8 | 20 | AUDIO | Audio |
| F9 | 10 | CLUSTER1 | I/P Cluster, MTC/FATC Switch, Digital Clock, Information Display Unit, BCM, Key In Switch, RKE Module |
| F10 | 10 | SDM | SDM |
| F11 | 10 | AIR BAG | Passenger Air Bag/Seat Belt Warning Lamp, PPD Sensor |
| F12 | 10 | WASHER | Washer/Wiper Switch |
| F13 | 10 | BCM | BCM |
| F14 | 20 | CIGAR | Extra Power Jack, Cigar Lighter |
| F15 | 20 | SUB WOOFER | Woofer Speaker |
| F16 | 15 | B/UP LP | Shift Selector Lever, PNP Switch, Back Up Switch, ECM Room Mirror, Brake Switch, I/P Cluster |
| F17 | 15 | U/H J/B | ECM, Fuel Pump Module, Automatic Transaxle |
| F18 | 10 | BCM | BCM |
| F19 | 10 | OSRVM | Power Mirror-Driver/Passenger, MTC/FATC Switch |
| F20 | 15 | A/D CONVERTER | Not Used |
| F21 | 15 | SSPS | SSPS Module |
| F22 | 15 | ALDL | DLC, Trunk Open Switch |
| F23 | 30 | ESC | EBCM |
BCM fuse block
| No. | A | Usage |
| A | 15 | Flasher |
| B | 5 | BCM Power |
| C | 15 | Door Lock |
| D | 25 | Front Wiper |
| E | 20 | Power Window |
| F | 30 | Defroster |
Engine compartment fuse box (diesel)
| No. | A |
Usage |
| F1 | 40 | PTC-3 relay |
| F2 | 40 | PTC-2 relay |
| F3 | 40 | PTC-1 relay |
| F4 | 30 | Fuel filter heater relay |
| F5 | 50 | Glow plug control unit |
| Relays | ||
| R1 | PTC-3 relay | |
| R2 | PTC-2 relay | |
| R3 | PTC-1 relay | |
| R4 | Fuel filter heater relay | |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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