Table of Contents
This article provides a detailed overview of the fuse block diagrams for the second-generation Buick LaCrosse, covering the 2009, 2010, 2011, 2012, 2013, 2014, 2015, and 2016 model years.
Fuses #6 and #7 in the passenger compartment fuse block protect the circuits for the cigarette lighter and 12V auxiliary power outlets.
Engine Compartment Fuse Block
The fuse block is located adjacent to the vehicle battery.
To access the fuses, compress the three retaining clips on the fuse block cover and lift it straight up.
General overview of the fuse block.
| Diagram | ||
|---|---|---|
|
||
| No. | Circuit Description | Amperage |
| R1 | A/C Compressor Clutch | - |
| R2 | Starter Relay | - |
| R3 | Not Used | - |
| R4 | Windshield Wiper (Speed Control) | - |
| R5 | Windshield Wiper (On/Off) | - |
| R6 | 2.4L (LUK - Hybrid): Heater Core Coolant Pump | - |
| R7 | Engine Control Module (ECM) | - |
| R8 | Not Used | - |
| R9 | Right Radiator Cooling Fan (High Speed) | - |
| R10 | Radiator Cooling Fan (Low Speed) | - |
| R11 | 2.4L (LUK - Hybrid): Auxiliary Transmission Fluid Pump | - |
| R12 | Not Used | - |
| R13 | Left Radiator Cooling Fan (High Speed) | - |
| R14 | Low Beam Headlamps | - |
| R15 | Ignition System | - |
| R16 | Secondary Air Injection Pump | - |
| R17 | Rear Window Defogger Relay | - |
| R18 | Horn (Non-Serviceable) | - |
| R19 | Windshield Washer Pump (Non-Serviceable) | - |
| R20 | Front Fog Lamps (Non-Serviceable) | - |
| R21 | High Beam Headlamps (Non-Serviceable) | - |
| R22 | Power Door Locks (Non-Serviceable) | - |
| R23 | 2.4L (LUK - Hybrid): Starter/Generator Control Module (Non-Serviceable) | - |
| 1 | Transmission Control Solenoid Valve Assembly | 15 A |
| 2 | Engine Control Module (ECM) | 5 A |
| 3 | 2014: A/C Compressor Clutch | 10 A |
| 4 | Empty | - |
| 5 | Engine Control Module (ECM) | 5 A |
| 6 | Windshield Wiper Motor | 30 A |
| 7 | Empty | - |
| 8 | 3.0L (LF1), 3.6L (LLT, LFX): Ignition Coils, Engine Control Module (ECM) | 15 A |
| 9 | 3.0L (LF1), 3.6L (LLT, LFX), 2.4L (LUK): Ignition Coils, Engine Control Module (ECM) | 15 A |
| 10 | Engine Control Module (ECM) | 20 A |
| 11 | 3.0L (LF1), 3.6L (LLT, LFX): Heated Oxygen Sensors (HO2S) | 10 A |
| 3.6L (LFX): Heated Oxygen Sensors (HO2S), Mass Air Flow (MAF) Sensor / Intake Air Temperature (IAT) Sensor, Flex Fuel Sensor | 10 A | |
| 12 | Starter Motor | 30 A |
| 13 | Fuel System Control Module (FSCM), Transmission Control Solenoid Valve Assembly | 7.5 A |
| 14 | 2.4L (LUK - Hybrid): Heater Core Coolant Pump | 5 A |
| 15 | 2.4L (LUK - Hybrid): Starter/Generator Control Module | 10 A |
| 16 | 3.6L (LLT): Mass Air Flow (MAF) Sensor / Intake Air Temperature (IAT) Sensor | 7.5 A |
| 17 | Supplemental Inflatable Restraint (SIR) Sensing and Diagnostic Module (SDM) | 5 A |
| 18 | Empty | - |
| 19 | Empty | - |
| 20 | Empty | - |
| 21 | Left and Right Rear Power Window Switches | 30 A |
| 22 | Sunroof Sunshade Motor and Control Module | 30 A |
| 23 | Electronic Power Steering (EPS) Control Module | 10 A |
| 2.4L (LUK - Hybrid): High-Voltage Battery Pack | 7.5 A | |
| 24 | 2014: Left and Right Front Power Window Switches | 30 A |
| 25 | Empty | - |
| 26 | Anti-lock Brake System (ABS) Pump Motor | 60 A |
| 27 | Electronic Parking Brake (EPB) Control Module | 30 A |
| 28 | Rear Window Defogger | 40 A |
| 29 | Driver Power Seat Lumbar Switch | 15 A |
| 30 | 2.4L (LUK - Hybrid): High-Voltage Battery Pack Cooling Fan | 15 A |
| 31 | Empty | - |
| 32 | Body Control Module (BCM) | 15 A |
| 33 | Heated Seat Control Module | 25 A |
| Memory Seat Control Module | 25 A | |
| 34 | Anti-lock Brake System (ABS) Valves | 25 A |
| 35 | Audio Amplifier | 30 A |
| 36 | Adaptive Forward Lighting (AFL) | 10 A |
| 37 | Right High Beam Headlamp, Right High Beam Actuator | 10 A |
| 38 | Left High Beam Headlamp, Left High Beam Actuator | 10 A |
| 39 | Empty | - |
| 40 | Empty | - |
| 41 | Vacuum Brake Booster Pump Motor | 20 A |
| 42 | Right Radiator Cooling Fan Motor | 30 A |
| 43 | Empty | - |
| 44 | 2.4L (LUK - Hybrid): Auxiliary Transmission Fluid Pump | 30 A |
| 45 | Left Radiator Cooling Fan Motor | 30 A |
| 46 | Radiator Cooling Fan (Low Speed) Relay, Left Radiator Cooling Fan (High Speed) Relay | 10 A |
| 47 | 2.4L (LAF), 3.0L (LF1), 2.4L (LUK): Heated Oxygen Sensors (HO2S), Mass Air Flow (MAF) Sensor / Intake Air Temperature (IAT) Sensor | 10 A |
| 3.6L (LLT): Camshaft Position (CMP) Actuators | 10 A | |
| 3.6L (LFX): Heated Oxygen Sensors (HO2S), Multifunction Intake Air Sensor, Evaporative Emission (EVAP) Purge Solenoid Valves | 10 A | |
| 48 | Front Fog Lamps | 15 A |
| 49 | Right Low Beam Headlamp | 15 A |
| 50 | Left Low Beam Headlamp | 15 A |
| 51 | Horn | 15 A |
| 52 | Instrument Panel Cluster (IPC) | 5 A |
| 53 | Air Quality Sensor, Vacuum Brake Booster Switch, Automatic Dimming Inside Rearview Mirror, Rear Vision Camera, Active Grille Air Shutter Actuator | 10 A |
| 54 | HVAC Control Module | 5 A |
| 55 | Power Outside Rearview Mirror Switch, Power Window Switches (Front), Universal Home Remote | 7.5 A |
| 56 | Windshield Washer Fluid Pump | 15 A |
| 57 | Empty | - |
| 58 | Empty | - |
| 59 | Secondary Air Injection Pump | 50 A |
| 60 | Heated Outside Rearview Mirrors | 7.5 A |
| 61 | Empty | - |
| 62 | Evaporative Emission (EVAP) Canister Vent Solenoid Valve | 10 A |
| 63 | Empty | - |
| 64 | Headlamp Control Module | 5 A |
| 65 | Empty | - |
| 66 | Secondary Air Injection Pressure Sensor | 15 A |
| 67 | Fuel System Control Module (FSCM) | 20 A |
| 68 | Empty | - |
| 69 | Body Control Module (BCM) | 5 A |
| 70 | Side Blind Zone Alert Sensors (Left/Right), Rear Parking Assist Control Module | 5 A |
| 71 | Empty | - |
Passenger Compartment Fuse Block
The fuse block is located on the driver's side, concealed behind a storage compartment in the instrument panel.
To access the fuses, open the storage compartment by pulling down on the top edge. Press inward on both sides of the compartment door to unlatch it from the instrument panel, then pull the door toward you to release it from the lower hinges.
General overview of the fuse block.
| Diagram | ||
|---|---|---|
|
||
| No. | Circuit Description | Amperage |
| R1 | Accessory Power | - |
| R2 | Empty | - |
| R3 | Rear Compartment Lid Release | - |
| 1 | Steering Wheel Controls | 2 A |
| 2 | Body Control Module (BCM) | 15 A |
| 3 | 15 A | |
| 4 | Audio System | 15 A |
| 5 | Vehicle Communication Interface Module (VCIM) | 7.5 A |
| 6 |
|
20 A |
| 7 | 20 A | |
| 8 | Body Control Module (BCM) | 15 A |
| 9 | 15 A | |
| 10 | 30 A | |
| 11 | HVAC Control Module | 40 A |
| 12 | Circuit Breaker: Passenger Power Seat | 25 A |
| 13 | Circuit Breaker: Driver Power Seat, Memory Seat Control Module | 25 A |
| 14 | Data Link Connector (DLC) | 7.5 A |
| 15 | Supplemental Inflatable Restraint (SIR) Sensing and Diagnostic Module (SDM) | 10 A |
| 16 | Rear Compartment Lid Release Latch | 10 A |
| 17 | HVAC Control Module | 10 A |
| 18 | Audio System / Radio | 25 A |
| 19 | Head-Up Display (HUD), Information Display Module, Multimedia Player Interface Module, Radio/HVAC Control Panel | 10 A |
| 20 | Supplemental Inflatable Restraint (SIR) Passenger Presence System (PPS) Module | 5 A |
| 21 | Instrument Panel Cluster (IPC) | 5 A |
| 22 | Ignition Switch | 2 A |
| 23 | Body Control Module (BCM) | 15 A |
| 24 | 15 A | |
| 25 | Empty | - |
| 26 | AC/DC Power Inverter Module | 30 A |