Fuses and relays Buick LaCrosse (2009-2016)

In this article, we will take a detailed look at the fuse diagrams for the Buick LaCrosse (second generation): 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 release.

Fuses #6 and #7 in the interior fuse box are responsible for the cigarette lighter and 12V power sockets.

In the engine compartment

Located near the battery.

To access, squeeze the three retaining clips on the fuse box cover and lift it straight up.

General view.

Diagram
No.	Description	Amps
R1	Air Conditioning Compressor Clutch	-
R2	Starter Relay	-
R3	Not Used	-
R4	Front Wiper (Speed Control)	-
R5	Front Wiper (On/Off)	-
R6	2.4L (LUK -Hybrid): Heater Coolant Pump	-
R7	Engine Control Module (ECM)	-
R8	Not Used	-
R9	Cooling Fan Right (High Speed)	-
R10	Cooling Fan (Low Speed)	-
R11	2.4L (LUK -Hybrid): Transmission Fluid Pump	-
R12	Not Used	-
R13	Cooling Fan Left (High Speed)	-
R14	Low Beam	-
R15	Ignition	-
R16	Secondary Air Injection Pump	-
R17	Rear Window Defogger Relay	-
R18	Horn (Non-Serviceable)	-
R19	Windshield Washer Pump (Non-Serviceable)	-
R20	Front Fog Lamp (Non-Serviceable)	-
R21	High Beam (Non-Serviceable)	-
R22	Door Locks (Non-Serviceable)	-
R23	2.4L (LUK - Hybrid): Starter/Generator Control Unit (Non-Serviceable)	-
1	Transmission Control Solenoid Valve Assembly	15 A
2	Engine Control Module	5 A
3	2014: A/C Compressor Clutch	10 A
4	Empty	-
5	Engine Control Module	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	10 A
	3.6L (LFX): Heated Oxygen Sensors, Mass Air Flow (MAF) Sensor/Intake Air Temperature (IAT) Sensor, Fuel Composition Sensor	10 A
12	Starter Motor	30 A
13	Fuel Pump Flow Control Module, Transmission Control Solenoid Valve Assembly	7,5 A
14	2.4L (LUK - Hybrid): Heater 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	Inflatable Restraint Sensing and Diagnostic Module (SDM)	5 A
18	Empty	-
19	Empty	-
20	Empty	-
21	Left Rear/Right Rear Window Switch	30 A
22	Moonroof Sunshade Motor Module and Control Module	30 A
23	Power Steering Control Unit	10 A
	2.4L (LUK - Hybrid): Hybrid/EV Battery Pack	7,5 A
24	2014: Window Switch (Left Front/Right Front)	30 A
25	Empty	-
26	ABS system	60 A
27	Parking Brake Control Unitr	30 A
28	Rear Window Defogger	40 A
29	Driver's Seat Lumbar Adjuster Switch	15 A
30	2.4L (LUK -Hybrid): Hybrid/EV Battery Pack Cooling Fan	15 A
31	Empty	-
32	Body Control Module (BCM)	15 A
33	Heated Seat Control Unit	25 A
	Memory Seat Unit	25 A
34	ABS	25 A
35	Audio Amplifier	30 A
36	Adaptive Forward Lighting (AFL)	10 A
37	High Beam Right Headlamp, Right High Beam Solenoid Actuator	10 A
38	High Beam Left Headlamp, Left High Beam Solenoid Actuator	10 A
39	Empty	-
40	Empty	-
41	Brake Booster Pump Motor	20 A
42	Right Cooling Fan Motor	30 A
43	Empty	-
44	2.4L (LUK -Hybrid): Transmission Fluid Pump	30 A
45	Left Cooling Fan Motor	30 A
46	Cooling Fan Low Speed Relay, Left Cooling Fan High Speed Relay	10 A
47	2.4L (LAF), 3.0L (LF1), 2.4L (LUK): Heated Oxygen Sensors, 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 Sensor, Multifunction Intake Air Sensor, Evaporative Emission Purge Solenoid Valves	10 A
48	Front Fog Lamps	15 A
49	Right Headlamp (Low Beam)	15 A
50	Left Headlamp (Low Beam)	15 A
51	Horn	15 A
52	Instrument Panel Cluster (IPC)	5 A
53	Air Quality Sensor, Brake Booster Vacuum Switch, Inside Rearview Mirror, Rearview Camera, Active Grille Air Shutter Actuator	10 A
54	HVAC Control Unit	5 A
55	Outside Rearview Mirror Switch, Window Switch (Driver/Passenger Side), Garage Door Opener	7,5 A
56	Windshield Washer Fluid Pump	15 A
57	Empty	-
58	Empty	-
59	Secondary Air Injection Pump	50 A
60	Heated Mirror	7,5 A
61	Empty	-
62	Evaporative Emission (EVAP) Canister Vent Solenoid Valve	10 A
63	Empty	-
64	Headlamp Control Unit	5 A
65	Empty	-
66	Secondary Air Injection Pressure Sensor	15 A
67	Fuel Pump Flow Control Module	20 A
68	Empty	-
69	Body Control Module (BCM)	5 A
70	Side Object Sensor (Left/Right), Rear Parking Assist Control Module	5 A
71	Empty	-

In the passenger compartment

Located on the driver side, behind the instrument panel.

To access, open the storage door by pulling down at the top. Press in on the sides of the door to release it from the panel. Pull the door toward you to release it from the hinge.

General view.

Diagram
No.	Description	Amps
R1	Accessory	-
R2	Empty	-
R3	Rear Compartment Lid Unlatch	-
1	Steering Wheel Control Switch	2 A
2	Body Control Module (BCM)	15 A
3		15 A
4	Audio System	15 A
5	Vehicle Communications Interface Module (VCIM)	7,5 A
6	Accessory Power Outlet (Center Console #1 and #2)  Buick LaCrosse Cigarette Lighter Fuse	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 Seat	25 A
13	Circuit Breaker: Driver Seat, Seat Memory Control Module	25 A
14	Data Link Connector (DLC)	7,5 A
15	Inflatable Restraint Sensing and Diagnostic Module (SDM)	10 A
16	Rear Compartment Lid Latch	10 A
17	HVAC Control Unit	10 A
18	Audio System / Radio	25 A
19	Head Up Display (HUD), Info Display Module, Multimedia Player Interface Module, Radio/HVAC Control	10 A
20	Inflatable Restraint 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	Accessory AC/DC Power Control Unit	30 A