In this article, we will take a detailed look at the fuse diagrams for the first-generation Buick LaCrosse: model years 2005, 2006, 2007, 2008, and 2009.
Fuse #10 in the engine compartment fuse block protects the 12V auxiliary power outlet and cigarette lighter.
Engine Compartment
Located on the passenger side of the engine compartment.
5.3L V8 Engine
This type of fuse block is installed on models equipped with the GM LS2 engine.
| Diagram | |
|---|---|
|
|
| Name | Description |
| FUEL/PUMP | Fuel Pump Relay |
| A/C CMPRSR | Air Conditioning (A/C) Compressor Relay |
| PWR/TRN | Powertrain Relay |
| STRTR | Starter Relay |
| FAN 1 | Cooling Fan 1 Relay |
| FAN 2 | Cooling Fan 2 Relay |
| FAN 3 | Cooling Fan 3 Relay |
| HDM | Headlamp Driver Module Relay |
| FOG LAMPS | Fog Lamps |
| LT HI BEAM | Left High-Beam Headlamp (Driver Side) |
| HORN | Horn |
| RT HI BEAM | Right High-Beam Headlamp (Passenger Side) |
| BATT 4 | Battery 4 |
| BATT 1 | Battery 1 |
| STRTR | Starter Motor |
| ABS MTR | Anti-lock Brake System (ABS) Motor |
| BATT 3 | Battery 3 |
| BATT 2 | Battery 2 |
| FAN 2 | Cooling Fan 2 |
| FAN 1 | Cooling Fan 1 |
| HVAC | Heating, Ventilation, and Air Conditioning (HVAC) Unit |
| FUEL/PUMP | Buick LaCrosse Fuel Pump Fuse |
| AIRBAG/ DISPLAY | Airbag Module, Display |
| COMPASS | Compass Module |
| ABS | Anti-lock Brake System (ABS) |
| ETC/ECM | Electronic Throttle Control (ETC), Engine Control Module (ECM) |
| A/C CMPRSR | Air Conditioning (A/C) Compressor |
| INJ 1 | Fuel Injectors 1 |
| ECM/TCM | Engine Control Module (ECM), Transmission Control Module (TCM) |
| TRANS | Transmission |
| EMISSIONS1 | Emissions 1 |
| ABS SOL | Anti-lock Brake System (ABS) Solenoids |
| ECM IGN | Engine Control Module (ECM) Ignition |
| INJ 2 | Fuel Injectors 2 |
| EMISSIONS2 | Emissions 2 |
| WPR | Windshield Wipers |
| AUX PWR | Auxiliary Power Outlet |
| WSW/RVC | Windshield Washer, Regulated Voltage Control (RVC) |
| LT LO BEAM | Left Low-Beam Headlamp (Driver Side) |
| RT LO BEAM | Right Low-Beam Headlamp (Passenger Side) |
3.6L and 3.8L V6 Engines
General view of the engine compartment fuse block.
| Diagram | |
|---|---|
|
|
| No. | Description |
| “Micro” Relays | |
| micR34 | High-Beam Headlamps |
| micR35 | Headlamp Driver Module |
| micR36 | Fog Lamps |
| micR37 | Ignition 1 |
| micR38 | Air Conditioning (A/C) Compressor |
| micR39 | Horn |
| micR40 | Powertrain |
| micR41 | Buick LaCrosse Fuel Pump Relay |
| “Mini” Relays | |
| minR42 | Cooling Fan 1 |
| minR43 | Cooling Fan 3 |
| minR44 | Windshield Wiper High |
| minR45 | Windshield Wiper Relay |
| minR46 | Cooling Fan 2 |
| minR48 | Starter Crank Relay |
| 49-54 | Spare |
| 55 | Fuse Puller |
| diode | Air Conditioning (A/C) Compressor Clutch Diode |
| Fuses | |
| 1 | Left High-Beam (Driver Side) |
| 2 | Right High-Beam (Passenger Side) |
| 3 | Left Low-Beam (Driver Side) |
| 4 | Right Low-Beam (Passenger Side) |
| 5 | Windshield Wipers |
| 6 | Windshield Washer / Regulated Voltage Control (RVC) |
| 7 | Fog Lamps |
| 8 | Transmission Control Module (TCM) |
| 9 | Supplemental Inflatable Restraint (SIR) / Airbags |
| 10 |
|
| 11 | Horn |
| 12 | Emissions |
| 13 | Air Conditioning (A/C) Compressor Clutch |
| 14 | Oxygen Sensors |
| 15 | Powertrain Control Module (PCM) |
| 16 | Powertrain Control Module (PCM), Electronic Throttle Control (ETC) |
| 17 | Electronic Throttle Control (ETC) |
| 18 | Display Module |
| 19 | Anti-lock Brake System (ABS) Solenoids |
| 20 | Fuel Injectors |
| 21 | Transmission Solenoids |
| 22 | Buick LaCrosse Fuel Pump Fuse |
| 23 | Anti-lock Brake System (ABS) |
| 24 | Ignition |
| J-Case Fuses | |
| J25 | Secondary Air Injection Pump |
| J26 | Battery Main 1 |
| J27 | Battery Main 2 |
| J28 | Battery Main 3 |
| J29 | Cooling Fan 1 |
| J30 | Battery Main 4 |
| J31 | Anti-lock Brake System (ABS) Motor |
| J32 | Cooling Fan 2 |
| J33 | Starter Motor |
Passenger Compartment
The fuse block is located on the passenger side of the instrument panel, behind the plastic side cover.
View of access panel.
General view (front side).
General view (rear side).
| Diagram | |
|---|---|
|
|
| Name | Description |
| RAP | Retained Accessory Power (RAP) Relay |
| PRK/LAMP | Parking Lamp Relay |
| R/DEFOG | Rear Window Defogger Relay |
| PWR/SEAT | Power Seats |
| S/ROOF | Sunroof / Moonroof |
| CNSTR | EVAP Canister Vent Solenoid |
| HVAC | Heating, Ventilation, and Air Conditioning (HVAC) System |
| HAZRD | Turn Signals, Hazard Flashers |
| PRK/LAMP | Parking Lamps |
| CHMSL/BKUP | Center High-Mounted Stoplamp (CHMSL) / Back-up Lamps |
| PWR/MIR | Power Mirrors |
| CRUISE | Cruise Control System |
| RDO/AMP | Radio, Audio Amplifier |
| HTD/SEAT | Heated Seat Module |
| HTD/MIR | Heated Mirror Module |
| PWR/WNDW | Power Window Module |
| DR/LCK TRUNK | Door Locks, Trunk Release |
| RFA/MOD | Remote Function Actuation (RFA) / Keyless Entry System |
| PRK/SWTCH | Park Switch / Ignition Key Lock |
| CLSTR | Instrument Cluster |
| STR/WHL/ ILLUM | Steering Wheel Controls Illumination |
| ONSTAR/ALDL | OnStar® System, Assembly Line Diagnostic Link (ALDL) |
| INT/ILLUM | Interior Illumination |