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In this article, you will find information about the fuses of the Buick Lucerne (models 2008, 2009, 2010, and 2011), 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 Lucerne
The wiring circuits in your vehicle are protected from short circuits by a combination of fuses and circuit breakers. 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. Be sure you replace a bad fuse with a new one of the identical size and rating.
You will find a fuse puller clipped in both of the fuse blocks. Snap the wide end of the fuse puller at the side indentations and pull the fuse out.
Caution!
- Data on the replacement fuse must match the data on the defective fuse.
- Before replacing a fuse, turn every vehicle electrical switch off.
- Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.
Location of Fuse Boxes
Underhood Fuse Block:
The underhood fuse block is located on the passenger’s side of the engine compartment. Remove the fuse cover and secondary service cover to access the fuse block.
Rear Underseat Fuse Block:
The rear fuse block is located under the rear seat on the driver’s side. The rear seat cushion must be removed to access the rear fuse block. To access the fuse block, pull out and lift up on the cover latch, located at the end of the fuse block, near the battery cable.
Removing the Rear Seat Cushion:
- Pull up on the front of the cushion to release the front hooks.
- Pull the cushion up and out toward the front of the vehicle.
Fuse Box Diagrams
2008
Underhood Fuse Block
| № | Usage |
|---|---|
| 1 | Engine Control Module (ECM), Crank |
| 2 | Fuel Injectors Odd |
| 3 | Fuel Injectors Even |
| 4 | Air Conditioning Clutch |
| 5 | Air Injection Reactor (AIR) Solenoid |
| 6 | Oxygen Sensor |
| 7 | Emission Device |
| 8 | Transmission, Ignition 1 |
| 9 | Engine Control Module (ECM), Powertrain Control Module (PCM) |
| 10 | Climate Control System, Instrument Panel Cluster Ignition 1 |
| 11 | Airbag System |
| 12 | Horn |
| 13 | Windshield Wiper |
| 14 | Fog Lamps |
| 15 | Right High-Beam Headlamp |
| 16 | Left High-Beam Headlamp |
| 17 | Left Low-Beam Headlamp |
| 18 | Right Low-Beam Headlamp |
| 19 | Windshield Washer Pump Motor |
| 20 | Left Front Cornering Lamp |
| 21 | Right Front Cornering Lamp |
| 22 | Air Pump (J-Case) |
| 23 | Antilock Brake System (ABS) (J-Case) |
| 24 | Starter (J-Case) |
| 25 | Antilock Brake System (ABS) Motor (J-Case) |
| 26 | Cooling Fan 2 (J-Case) |
| 27 | Cooling Fan 1 (J-Case) |
| 28 | Windshield Washer Heater (J-Case) |
| 29 | Powertrain |
| 30 | Starter |
| 31 | Cooling Fan 2 |
| 32 | Cooling Fan 3 |
| 33 | Cooling Fan 1 |
| 34 | Air Conditioning Clutch |
| 35 | Air Injection Reactor (AIR) Solenoid |
| 36 | Ignition |
| 37 | Air Pump |
Rear Underseat Fuse Block
| № | Usage |
|---|---|
| 1 | Fuel Pump |
| 2 | Left Park Lamp |
| 3 | Run 3 - Rear Blower |
| 4 | Right Park Lamp |
| 5 | Engine Control Module (ECM) / Transmission Control Module (TCM) |
| 6 | Memory Module |
| 7 | Right Park Lamp (optional) |
| 8 | Steering Wheel Illumination |
| 9 | Front Heated/Cooled Seat Module |
| 10 | Run 2 - Heated/Cooled Seats, Heated Washer Fluid |
| 11 | Rear Heated Seat Module (optional) |
| 12 | RPA Module |
| 13 | PASS-Key III System |
| 14 | Unlock/Lock Module |
| 15 | Magnetic Ride Control |
| 16 | Not Used |
| 17 | Sunroof |
| 18 | Body Control Module (BCM) Dim |
| 19 | Body Control Module (BCM) |
| 20 | Run 1- Heated Steering Wheel |
| 21 | Ignition Switch |
| 22 | Driver Door Module |
| 23 | Rear Lumbar (optional) |
| 24 | Electronic Leveling Control Module |
| 25 | Body Control Module (Left Turn Signal) |
| 26 | Cigarette Lighter, Auxiliary Power Outlet |
| 27 | Navigation (optional) |
| 28 | Retained Accessory Power 1 (RAP) |
| 29 | Passenger Door Module |
| 30 | Sensing and Diagnostic Module |
| 31 | Accessory Power Outlets |
| 32 | Body Control Module (BCM) (Inadvertent) |
| 33 | Retained Accessory Power 2 (RAP) |
| 34 | CanisterVent Solenoid |
| 35 | Body Control Module (Courtesy) |
| 36 | Body Control Module (Right Turn Signal) |
| 37 | Trunk Release |
| 38 | Amplifier, Radio |
| 39 | Body Control Module (CHMSL) |
| 40 | Body Control Module |
| 41 | Stoplamp (optional) |
| 42 | OnStar Module |
| 43 | Body Modules |
| 44 | Radio |
| 45 | Door Unlatch (optional) |
| 46 | Rear Defogger (J-Case) |
| 47 | Electronic Leveling Control Compressor (J-Case) |
| 48 | Blower (J-Case) |
| 49 | Blower (J-Case) (optional) |
| 50 | Terminating Resistor |
| 51 | Blower (optional) |
| 52 | Rear Defogger |
| 53 | Electronic Leveling Control Compressor |
| 58 | Park Lamps |
| 59 | Fuel Pump |
| 60 | License Plate Lamp (optional) |
| 61 | Right Park Lamp (optional) |
| 62 | Unlock |
| 63 | Lock |
| 64 | Run |
| 65 | Not Used |
| 66 | Door Unlatch (optional) |
| 67 | Trunk Release |
| 68 | Stoplamp (optional) |
| 69 | Overhead Lamps (optional) |
| 70 | Retained Accessory Power (RAP) |
| 54 | Right Front Seat |
| 55 | Left Front Power Seat |
| 56 | Power Windows |
| 57 | Power Tilt Steering Wheel |
2009
Underhood Fuse Block
| № | Usage |
|---|---|
| 1 | Engine Control Module (ECM), Crank |
| 2 | Fuel Injectors Odd |
| 3 | Fuel Injectors Even |
| 4 | Air Conditioning Clutch |
| 5 | Air Injection Reactor (AIR) Solenoid |
| 6 | Oxygen Sensor |
| 7 | Emission Device |
| 8 | Transmission, Ignition 1 |
| 9 | Engine Control Module (ECM), Powertrain Control Module (PCM) |
| 10 | Climate Control System, Instrument Panel Cluster Ignition 1 |
| 11 | Airbag System |
| 12 | Horn |
| 13 | Windshield Wiper |
| 14 | Fog Lamps |
| 15 | Right High-Beam Headlamp |
| 16 | Left High-Beam Headlamp |
| 17 | Left Low-Beam Headlamp |
| 18 | Right Low-Beam Headlamp |
| 19 | Windshield Washer Pump Motor |
| 20 | Left Front Cornering Lamp |
| 21 | Right Front Cornering Lamp |
| 22 | Air Pump (J-Case) |
| 23 | Antilock Brake System (ABS) (J-Case) |
| 24 | Starter (J-Case) |
| 25 | Antilock Brake System (ABS) Motor (J-Case) |
| 26 | Cooling Fan 2 (J-Case) |
| 27 | Cooling Fan 1 (J-Case) |
| 28 | Windshield Washer Heater (J-Case) |
| 29 | Powertrain |
| 30 | Starter |
| 31 | Cooling Fan 2 |
| 32 | Cooling Fan 3 |
| 33 | Cooling Fan 1 |
| 34 | Air Conditioning Clutch |
| 35 | Air Injection Reactor (AIR) Solenoid |
| 36 | Ignition |
| 37 | Air Pump |
Rear Underseat Fuse Block
| № | Usage |
|---|---|
| 1 | Fuel Pump |
| 2 | Left Park Lamp |
| 3 | Not Used |
| 4 | Right Park Lamp |
| 5 | Engine Control Module (ECM) / Transmission Control Module (TCM) |
| 6 | Memory Module |
| 7 | Not Used |
| 8 | Steering Wheel Illumination |
| 9 | Front Heated/Cooled Seat Module |
| 10 | Run 2 - Heated/Cooled Seats, Heated Washer Fluid |
| 11 | Not Used |
| 12 | RPA Module |
| 13 | PASS-Key III System |
| 14 | Unlock/Lock Module |
| 15 | Magnetic Ride Control |
| 16 | Daytime Running Lamps (DRL) |
| 17 | Sunroof |
| 18 | Body Control Module (BCM) Dim |
| 19 | Body Control Module (BCM) |
| 20 | Run 1- Heated Steering Wheel |
| 21 | Ignition Switch |
| 22 | Driver Door Module |
| 23 | Not Used |
| 24 | Electronic Leveling Control Module |
| 25 | Body Control Module (Left Turn Signal) |
| 26 | Cigarette Lighter, Auxiliary Power Outlet |
| 27 | Not Used |
| 28 | Retained Accessory Power 1 (RAP) |
| 29 | Passenger Door Module |
| 30 | Sensing and Diagnostic Module |
| 31 | Accessory Power Outlets |
| 32 | Body Control Module (BCM) (Inadvertent) |
| 33 | Retained Accessory Power 2 (RAP) |
| 34 | CanisterVent Solenoid |
| 35 | Body Control Module (Courtesy) |
| 36 | Body Control Module (Right Turn Signal) |
| 37 | Trunk Release |
| 38 | Amplifier, Radio |
| 39 | Body Control Module (CHMSL) |
| 40 | Body Control Module |
| 41 | Not Used |
| 42 | OnStar Module |
| 43 | Body Modules |
| 44 | Radio |
| 45 | Not Used |
| 46 | Rear Defogger (J-Case) |
| 47 | Electronic Leveling Control Compressor (J-Case) |
| 48 | Blower (J-Case) |
| 49 | Not Used |
| 50 | Terminating Resistor |
| 51 | Not Used |
| 52 | Rear Defogger |
| 53 | Electronic Leveling Control Compressor |
| 58 | Park Lamps |
| 59 | Fuel Pump |
| 60 | Not Used |
| 61 | Not Used |
| 62 | Unlock |
| 63 | Lock |
| 64 | Run |
| 65 | Daytime Running Lamps |
| 66 | Not Used |
| 67 | Trunk Release |
| 68 | Not Used |
| 69 | Not Used |
| 70 | Retained Accessory Power (RAP) |
| 54 | Right Front Seat |
| 55 | Left Front Power Seat |
| 56 | Power Windows |
| 57 | Power Tilt Steering Wheel |
2010-2011
Underhood Fuse Block
| № | Usage |
|---|---|
| 1 | Engine Control Module (ECM), Crank |
| 2 | Fuel Injectors Odd |
| 3 | Fuel Injectors Even |
| 4 | Air Conditioning Clutch |
| 5 | Air Injection Reactor (AIR) Solenoid |
| 6 | Oxygen Sensor |
| 7 | Emission Device |
| 8 | Transmission, Ignition 1 |
| 9 | Engine Control Module (ECM), Powertrain Control Module (PCM) |
| 10 | Climate Control System, Instrument Panel Cluster Ignition 1 |
| 11 | Airbag System |
| 12 | Horn |
| 13 | Windshield Wiper |
| 14 | Fog Lamps |
| 15 | Right High-Beam Headlamp |
| 16 | Left High-Beam Headlamp |
| 17 | Left Low-Beam Headlamp |
| 18 | Right Low-Beam Headlamp |
| 19 | Windshield Washer Pump Motor |
| 20 | Left Front Cornering Lamp |
| 21 | Right Front Cornering Lamp |
| 22 | Air Pump (J-Case) |
| 23 | Antilock Brake System (ABS) (J-Case) |
| 24 | Starter (J-Case) |
| 25 | Antilock Brake System (ABS) Motor (J-Case) |
| 26 | Cooling Fan 2 (J-Case) |
| 27 | Cooling Fan 1 (J-Case) |
| 29 | Powertrain |
| 30 | Starter |
| 31 | Cooling Fan 2 |
| 32 | Cooling Fan 3 |
| 33 | Cooling Fan 1 |
| 34 | Air Conditioning Clutch |
| 35 | Air Injection Reactor (AIR) Solenoid |
| 36 | Ignition |
| 37 | Air Pump |
Rear Underseat Fuse Block
| № | Usage |
|---|---|
| 1 | Fuel Pump |
| 2 | Left Park Lamp |
| 3 | Not Used |
| 4 | Right Park Lamp |
| 5 | Engine Control Module (ECM) / Transmission Control Module (TCM) |
| 6 | Memory Module |
| 7 | Not Used |
| 8 | Steering Wheel Illumination |
| 9 | Front Heated/Cooled Seat Module |
| 10 | Run 2 - Heated/Cooled Seats |
| 11 | Not Used |
| 12 | RPA Module |
| 13 | PASS-Key III System |
| 14 | Unlock/Lock Module |
| 15 | Magnetic Ride Control |
| 16 | Daytime Running Lamps (DRL) |
| 17 | Sunroof |
| 18 | Body Control Module (BCM) Dim |
| 19 | Body Control Module (BCM) |
| 20 | Run 1- Heated Steering Wheel |
| 21 | Ignition Switch |
| 22 | Driver Door Module |
| 23 | Not Used |
| 24 | Electronic Leveling Control Module |
| 25 | Body Control Module (Left Turn Signal) |
| 26 | Cigarette Lighter, Auxiliary Power Outlet |
| 27 | Not Used |
| 28 | Retained Accessory Power 1 (RAP) |
| 29 | Passenger Door Module |
| 30 | Sensing and Diagnostic Module |
| 31 | Accessory Power Outlets |
| 32 | Body Control Module (BCM) (Inadvertent) |
| 33 | Retained Accessory Power 2 (RAP) |
| 34 | Canister Vent Solenoid |
| 35 | Body Control Module (Courtesy) |
| 36 | Body Control Module (Right Turn Signal) |
| 37 | Trunk Release |
| 38 | Amplifier, Radio |
| 39 | Body Control Module (CHMSL) |
| 40 | Body Control Module |
| 41 | Not Used |
| 42 | OnStar Module |
| 43 | Body Modules |
| 44 | Radio |
| 45 | Not Used |
| 46 | Rear Defogger (J-Case) |
| 47 | Electronic Leveling Control Compressor (J-Case) |
| 48 | Blower (J-Case) |
| 49 | Not Used |
| 50 | Terminating Resistor |
| 51 | Not Used |
| 52 | Rear Defogger |
| 53 | Electronic Leveling Control Compressor |
| 58 | Park Lamps |
| 59 | Fuel Pump |
| 60 | Not Used |
| 61 | Not Used |
| 62 | Unlock |
| 63 | Lock |
| 64 | Run |
| 65 | Daytime Running Lamps |
| 66 | Not Used |
| 67 | Trunk Release |
| 68 | Not Used |
| 69 | Not Used |
| 70 | Retained Accessory Power (RAP) |
| 54 | Right Front Seat |
| 55 | Left Front Power Seat |
| 56 | Power Windows |
| 57 | Power Tilt Steering Wheel |