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In this article, you will find information about the fuses of the Buick LaCrosse (models 2008 and 2009), including diagrams of the fuse boxes, a list of fuses and relays, their designation, and the location of the fuse blocks within the vehicle.
Checking and Replacing Fuses in Buick LaCrosse
The wiring circuits in the vehicle are protected from short circuits by a combination of fuses, circuit breakers and in the fuse block wiring itself. This greatly reduces the chance of fires caused by electrical problems.
Look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Make sure a bad fuse is replaced with a new one of the identical size and rating.
Caution!
- Data on the replacement fuse must match the data on the defective fuse.
- Before replacing a fuse, turn every vehicle electrical switch off.
Location of Fuse Boxes
Instrument Panel Fuse Block:
The instrument panel fuse block is located on the passenger’s side of the instrument panel. Pull off the cover labeled FUSES to expose the fuse block.
Underhood Fuse Block:
Some fuses and relays are located in the underhood fuse block on the passenger’s side of the vehicle in the engine compartment.
Fuse Box Diagrams
2008-2009
Instrument Panel Fuse Block
| Name | Usage |
|---|---|
| DR/LCK TRUNK | Door Locks, Trunk |
| RFA/MOD | Remote Keyless Entry |
| PRK/SWTCH | Ignition Key Lock |
| CLSTR | Cluster |
| STR/WHL/ILLUM | Steering Wheel Controls Illumination |
| ONSTAR/ALDL | OnStar, Data Link |
| INT/ILLUM | Interior Lamps |
| PWR/SEAT | Power Seat |
| S/ROOF | Sunroof |
| 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 |
| RDO/AMP | Radio, Amplifier |
| HTD/SEAT | Heated Seats |
| HTD/MIR | Heated Mirrors |
| PWR/WNDW | Power Window |
| RAP | Retained Accessory Power |
| PRK/LAMP | Park Lamp Relay |
| R/DEFOG | Rear Defogger Relay |
Underhood Fuse Block
3.6L & 3.8L V6 Engines
| № | Usage |
|---|---|
| 1 | Driver Side High-Beam |
| 2 | Passenger Side High-Beam |
| 3 | Driver Side Low-Beam |
| 4 | Passenger Side Low-Beam |
| 5 | Windshield Wiper |
| 6 | Washer / Regulated Voltage Control |
| 7 | Fog Lamps |
| 8 | Transmission Control Module |
| 9 | Supplemental Inflatable Restraint |
| 10 | Auxiliary Power |
| 11 | Horn |
| 12 | Emission |
| 13 | Air Conditioner Clutch |
| 14 | Oxygen Sensor |
| 15 | Powertrain Control Module |
| 16 | Powertrain Control Module, Electronic Throttle Control |
| 17 | Electronic Throttle Control |
| 18 | Display |
| 19 | Antilock Brake Solenoid |
| 20 | Fuel Injector |
| 21 | Transmission Solenoid |
| 22 | Fuel Pump |
| 23 | Antilock Brake System |
| 24 | Ignition |
| 55 | Fuse Puller |
| 25 | Air Pump |
| 26 | Battery Main 1 |
| 27 | Battery Main 2 |
| 28 | Battery Main 3 |
| 29 | Fan 1 |
| 30 | Battery Main 4 |
| 31 | Antilock Brake System Motor |
| 32 | Fan 2 |
| 33 | Starter |
| 34 | Headlamp High-Beam |
| 35 | Headlamp Driver Module |
| 36 | Fog Lamp |
| 37 | Ignition 1 |
| 38 | Air Conditioning Compressor |
| 39 | Horn |
| 40 | Powertrain |
| 41 | Fuel Pump |
| 42 | Fan 1 |
| 43 | Fan 3 |
| 44 | Windshield Wiper High |
| 45 | Windshield Wiper |
| 46 | Fan 2 |
| 48 | Crank |
5.3L V8 Engine
| Name | Usage |
|---|---|
| HVAC | Climate Control System |
| FUEL/PUMP | Fuel Pump |
| AIRBAG/DISPLAY | Airbag, Display |
| COMPASS | Compass |
| ABS | Antilock Brake System |
| ETC/ECM | Electronic Throttle Control, Engine Control Module (ECM) |
| A/C CMPRSR | Air Conditioning Compressor |
| INJ 1 | Injectors 1 |
| ECM/TCM | Engine Control Module (ECM), Transmission Control Module (TCM) |
| TRANS | Transmission |
| EMISSIONS 1 | Emissions 1 |
| ABS SOL | Antilock Brake Solenoid |
| ECM IGN | Engine Control Module (ECM), Ignition |
| INJ 2 | Injectors 2 |
| EMISSIONS 2 | Emissions 2 |
| WPR | Windshield Wipers |
| AUX PWR | Auxiliary Power |
| WSW/RVC | Windshield Washer, Regulated Voltage Control |
| LT LO BEAM | Driver Side Low-Beam Headlamp |
| RT LO BEAM | Passenger Side Low-Beam Headlamp |
| FOG LAMPS | Fog Lamps |
| LT HI BEAM | Driver Side High-Beam Headlamp |
| HORN | Horn |
| RT HI BEAM | Passenger Side High-Beam Headlamp |
| BATT4 | 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 |
| FUEL/PUMP | Fuel Pump |
| A/C CMPRSR | Air Conditioning Compressor |
| PWR/TRN | Powertrain |
| STRTR | Starter |
| FAN 3 | Cooling Fan 3 |
| FAN 2 | Cooling Fan 2 |
| FAN 1 | Cooling Fan 1 |
| HDM | Headlamp Driver Module |