Table of Contents
This material discusses in detail the fuse diagrams of the Buick LaCrosse (first generation): 2005, 2006, 2007, 2008, 2009 release.
Fuse #10 in the engine bay fuse box is responsible for the 12V auxilary power socket and cigarette lighter.
In the engine compartment
Located on the passenger side of the engine bay.
5.3L V8 Engine
This type of fuse box is installed on the GM LS2 modifications.
| Diagram | |
|---|---|
 |
|
| Name | Description |
| FUEL/PUMP | Fuel Pump Relay |
| A/C CMPRSR | Air Conditioning Compressor |
| 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 | High-Beam Headlamp (Driver Side) |
| HORN | Horn |
| RT HI BEAM | High-Beam Headlamp (Passenger Side) |
| BATT 4 | Battery 4 |
| BATT 1 | Battery 1 |
| STRTR | Starter |
| ABS MTR | Antilock Brake System Motor |
| BATT 3 | Battery 3 |
| BATT 2 | Battery 2 |
| FAN 2 | Cooling Fan 2 |
| FAN 1 | Cooling Fan 1 |
| HVAC | Climate Control Unit |
| FUEL/PUMP | Buick LaCrosse Fuel Pump Fuse |
| AIRBAG/ DISPLAY | Airbag module, Display |
| COMPASS | Compass module |
| ABS | Antilock Brake System (ABS) |
| ETC/ECM | Electronic Throttle Control Unit, Engine Control Module (ECM) |
| A/C CMPRSR | Air Conditioning |
| INJ 1 | Injectors 1 |
| ECM/TCM | Engine Control Module, Transmission Control Module |
| TRANS | Transmission |
| EMISSIONS1 | Emissions 1 |
| ABS SOL | Antilock Brake Solenoid |
| ECM IGN | Engine Control Module, Ignition |
| INJ 2 | Injectors 2 |
| EMISSIONS2 | Emissions 2 |
| WPR | Windshield Wipers |
| AUX PWR | Auxiliary Power |
| WSW/RVC | Windshield Washer, Regulated Voltage Control |
| LT LO BEAM | Low-Beam Headlamp (Driver Side) |
| RT LO BEAM | Low-Beam Headlamp (Passenger Side) |
3.6L and 3.8L V6 engines
General view of the fuse box.
| Diagram | |
|---|---|
 |
|
| No. | Description |
| Relays type "Micro" | |
| micR34 | High-Beam Headlamp |
| micR35 | Driver Module Headlamp |
| micR36 | Fog Lamp |
| micR37 | Ignition 1 |
| micR38 | Air Conditioning Compressor |
| micR39 | Horn |
| micR40 | Powertrain |
| micR41 | Buick LaCrosse Fuel Pump Relay |
| Relays type "Mini" | |
| minR42 | Fan 1 |
| minR43 | Fan 3 |
| minR44 | Windshield Wiper High |
| minR45 | Windshield Wiper Relay |
| minR46 | Fan 2 |
| minR48 | Crank Relay |
| 49-54 | Reserve |
| 55 | Puller |
| diode | Air Conditioner Compressor Clutch Diode |
| Fuses | |
| 1 | High-Beam (Driver Side) |
| 2 | High-Beam (Passenger Side) |
| 3 | Low-Beam (Driver Side) |
| 4 | Low-Beam (Passenger Side) |
| 5 | Windshield Wiper |
| 6 | Washer/Regulated Voltage Control |
| 7 | Fog Lamps |
| 8 | Transmission Control Module (TCM) |
| 9 | Supplemental Inflatable Restraint |
| 10 |
|
| 11 | Horn |
| 12 | Emission |
| 13 | Air Conditioner Clutch |
| 14 | Oxygen Sensor |
| 15 | Powertrain Control Module (PCM) |
| 16 | Powertrain Control Module, Electronic Throttle Control |
| 17 | Electronic Throttle Control |
| 18 | Display |
| 19 | Antilock Brake Solenoid (ABS) |
| 20 | Fuel Injector |
| 21 | Transmission Solenoid |
| 22 | Buick LaCrosse Fuel Pump Fuse |
| 23 | Antilock Brake System |
| 24 | Ignition |
| Fuse type J-Style | |
| J25 | Air Pump |
| J26 | Battery Main 1 |
| J27 | Battery Main 2 |
| J28 | Battery Main 3 |
| J29 | Radiator Fan 1 |
| J30 | Battery Main 4 |
| J31 | Antilock Brake System Motor |
| J32 | Fan 2 |
| J33 | Starter |
In the passenger compartment
Fuse box located on the passenger's side of the instrument panel, behind the plastic cover.
Access example.
General view (front side).
General view (back side).
| Diagram | |
|---|---|
 |
|
| Name | Decription |
| RAP | Retained Accessory Power Relay |
| PRK/LAMP | Park Lamp Relay |
| R/DEFOG | Rear Defogger Relay |
| PWR/SEAT | Power Seat |
| S/ROOF | Moonroof |
| CNSTR | Canister Vent |
| HVAC | Climate Control System |
| HAZRD | Turn Signal, Hazard |
| PRK/LAMP | Park Lamps |
| CHMSL/BKUP | Center-High-Mounted Stoplamp/Back-up Lamps |
| PWR/MIR | Power Mirrors |
| CRUISE | Cruise Control System |
| RDO/AMP | Radio, Audio Amplifier |
| HTD/SEAT | Heated Seats Module |
| HTD/MIR | Heated Mirrors Module |
| PWR/WNDW | Power Window Module |
| DR/LCK TRUNK | Door Locks, Trunk |
| RFA/MOD | Remote Keyless Entry System |
| PRK/SWTCH | Ignition Key Lock |
| CLSTR | Cluster |
| STR/WHL/ ILLUM | Steering Wheel Controls Illumination |
| ONSTAR/ALDL | OnStar® System, Data Link |
| INT/ILLUM | Interior Lamps |
