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.
Instrument Panel Fuse Block
The instrument panel fuse block is located at on the lower front side of the console, on the passenger side of the vehicle.
| Fuses | Usage |
| POWER MIRRORS | Power Mirrors |
| EPS | Electric Power Steering |
| RUN/CRANK | Cruise Control Switch, Passenger Airbag Status Indicator |
| HVAC BLOWER HIGH | Heating Ventilation Air Conditioning Control Diagnostic Link Connector (Battery) |
| PEDAL | Not Used |
| WIPER SW | Windshield Wiper/Washer Switch |
| IGN SENSOR | Ignition Switch |
| STRG WHLÂ ILLUM | Steering Wheel Illumination |
| NOTÂ INSTALLED | Not Used |
| RADIO | Audio System |
| INTERIORÂ LIGHTS | Interior Lamps |
| NOTÂ INSTALLED | Not Used |
| POWERÂ WINDOWS | Power Windows |
| HVAC CTRL (IGN) | Heating Ventilation Air Conditioning Control (Ignition) |
| HVAC BLOWER | Heating Ventilation Air Conditioning Blower Switch |
| DOOR LOCK | Door Locks |
| ROOF/HEATÂ SEAT | Sunroof, Heated Seat |
| NOTÂ INSTALLED | Not Used |
| NOTÂ INSTALLED | Not Used |
| AIRBAGÂ (BATT) | Airbag (Battery) |
| SPARE FUSEÂ HOLDER | Spare Fuse Holder |
| SPARE FUSEÂ HOLDER | Spare Fuse Holder |
| SPARE FUSEÂ HOLDER | Spare Fuse Holder |
| SPARE FUSEÂ HOLDER | Spare Fuse Holder |
| FUSE PULLER | Fuse Puller |
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Engine Compartment Fuse Block
The engine compartment fuse block is located on the driverâs side of the vehicle, near the battery.
| Fuses | Usage |
| 1 | Air Conditioning Clutch |
| 2 | Electronic Throttle Control |
| 3 | Not Used |
| 4 | Transmission Control Module Ignition 1 |
| 5 | Mass Airflow Sensor (LY7) |
| 6 | Emission |
| 7 | Left Headlamp Low-Beam |
| 8 | Horn |
| 9 | Right Headlamp Low-Beam |
| 10 | Front Fog Lamps |
| 11 | Left Headlamp High-Beam |
| 12 | Right Headlamp High-Beam |
| 13 | Engine Control Module BATT |
| 14 | Windshield Wiper |
| 15 | Antilock Brake System (IGN 1) |
| 16 | Engine Control Module IGN 1 |
| 17 | Cooling Fan 1 |
| 18 | Cooling Fan 2 |
| 19 | Run Relay, Heating, Ventilation, Air Conditioning Blowe |
| 20 | Body Control Module 1 |
| 21 | Body Control Module Run/Crank |
| 22 | Rear Electrical Center 1 |
| 23 | Rear Electrical Center 2 |
| 24 | Anti-lock Brake System |
| 25 | Body Control Module 2 |
| 26 | Starter |
| 41 | Electric Power Steering |
| 42 | Transmission Control Module Battery |
| 43 | Ignition Module (LZ4, LZE, LE9 & LE5); Injectors, Ignition Coils Odd (LY7) |
| 44 | Injectors (LZ4, LZE, LE9 & LE5);Â Injectors, Ignition Coils Even (LY7) |
| 45 | Post Cat 02 Sensor Heaters (LY7, LZ4 & LZE) |
| 46 | Daytime Running Lamps |
| 47 | Center High-Mounted Stoplamp |
| 50 | Driver Power Window |
| 51 | Not Used |
| 52 | AIR Solenoid |
| 54 | Regulated Voltage Control |
| 55 | DC/AC Inverter |
| 56 | Antilock Brake System BATT |
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| Relays | Usage |
| 28 | Cooling Fan 1 |
| 29 | Cooling Fan Mode Series/Parallel |
| 30 | Cooling Fan 2 |
| 31 | Starter |
| 32 | Run/Crank, Ignition |
| 33 | Powertrain |
| 34 | Air Conditioning Clutch |
| 35 | High Beam |
| 36 | Front Fog Lamps |
| 37 | Horn |
| 38 | Low-Beam Headlamps |
| 39 | Windshield Wiper 1 |
| 40 | Windshield Wiper 2 |
| 48 | Daytime Running Lamps |
| 49 | Stoplamps |
| 53 | AIR Solenoid |
Rear Compartment Fuse Block
The rear compartment fuse block is located in the trunk of the vehicle. Access the fuse block through the trunk panel on the driverâs side of the rear cargo area.
| Fuses | Usage |
| 1 | Passenger Seat Controls |
| 2 | Driver Seat Controls |
| 3 | Not Used |
| 4 | Not Used |
| 5 | Emission 2, Canister Vent Solenoid |
| 6 | Park Lamps, Instrument Panel Dimming |
| 7 | Not Used |
| 8 | Not Used |
| 9 | Not Used |
| 10 | Sunroof Controls |
| 11 | Not Used |
| 12 | Not Used |
| 13 | Audio Amplifier |
| 14 | Heated Seat Controls |
| 15 | Not Used |
| 16 | Remote Keyless Entry (RKE) System, XM⢠Satellite Radio, UGDO |
| 17 | Back-up Lamps |
| 18 | Not Used |
| 19 | Not Used |
| 20 | Auxiliary Power Outlets |
| 21 | Not Used |
| 22 | Trunk Release |
| 23 | Rear Defog |
| 24 | Heated Mirror |
| 25 | Fuel Pump |
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| Relays | Usage |
| 26 | Rear Window Defogger |
| 27 | Park Lamps |
| 28 | Not Used |
| 29 | Not Used |
| 30 | Not Used |
| 31 | Not Used |
| 32 | Not Used |
| 33 | Back-up Lamps |
| 34 | Not Used |
| 35 | Not Used |
| 36 | Trunk Release |
| 37 | Fuel Pump |
| 38 (Diode) | Cargo Lamp |
WARNING:Â Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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