2011 BUICK LACROSSE relay

Black plate (24,1)Buick LaCrosse Owner Manual - 2011
1-24 In Brief
.Replace the vehicle's tires with
the same TPC Spec number
molded into the tire's sidewall
near the size.
.Follow recommended scheduled
maintenance.
Roadside Assistance
Program
U.S.:1-800-252-1112
TTY Users (U.S.): 1-888-889-2438
Canada: 1-800-268-6800
Mexico: 01-800-466-0818
As the owner of a new Buick, you
are automatically enrolled in the
Roadside Assistance program.
See Roadside Assistance Program
(U.S. and Canada) on page 13‑8
or Roadside Assistance Program
(Mexico) on page 13‑10 for more
information. Roadside Service and OnStar
(U.S. and Canada)
If you have an active OnStar
subscription, press the
Qbutton
and the current GPS location will
be sent to an OnStar Advisor who
will assess your problem, contact
Roadside Assistance, and relay
your exact location to get the help
you need.
Online Owner Center
(U.S. and Canada)
The Online Owner Center is a
complimentary service that includes
online service reminders, vehicle
maintenance tips, online owner
manual, special privileges,
and more.
Sign up today at:
www.buickownercenter.com
(U.S.) or www.gm.ca (Canada).
OnStar®
For vehicles with an active OnStar
subscription, OnStar uses several
innovative technologies and live
Advisors to provide a wide range
of safety, security, navigation,
diagnostics, and calling services.
Automatic Crash Response
In a crash, built‐in sensors can
automatically alert an OnStar
Advisor who is immediately
connected to the vehicle to
see if you need help.

Black plate (39,1)Buick LaCrosse Owner Manual - 2011
Vehicle Care 10-39
Although the circuit is protected
from electrical overload, overload
due to heavy snow or ice may
cause wiper linkage damage.
Always clear ice and heavy snow
from the windshield before using
the windshield wipers.
If the overload is caused by an
electrical problem and not snow
or ice, be sure to get it fixed.
Fuses and Circuit
Breakers
The wiring circuits in the vehicle are
protected from short circuits by a
combination of fuses and circuit
breakers. This greatly reduces
the chance of damage caused
by electrical problems.To check a fuse, look at the
silver-colored band inside the fuse.
If the band is broken or melted,
replace the fuse. Be sure to replace
a bad fuse with a new one of the
identical size and rating.
Fuses of the same amperage
can be temporarily borrowed from
another fuse location, if a fuse goes
out. Replace the fuse as soon as
possible.
To identify and check fuses,
circuit breakers, and relays,
see
Engine Compartment Fuse
Block on page 10‑39, Instrument
Panel Fuse Block on page 10‑42,
and Rear Compartment Fuse Block
on page 10‑44.
Engine Compartment
Fuse Block
To remove the fuse block cover,
squeeze the three retaining clips
on the cover and lift it straight up.
Notice: Spilling liquid on any
electrical component on the
vehicle may damage it. Always
keep the covers on any electrical
component.

Black plate (40,1)Buick LaCrosse Owner Manual - 2011
10-40 Vehicle Care
Engine Compartment Fuse Block
The vehicle may not be equipped
with all of the fuses, relays, and
features shown. J-CaseFuses Usage
6 Wiper
12 Starter J-Case
Fuses Usage
21 Rear Power
Windows
22 Sunroof
24 Front Power
Windows J-Case
Fuses Usage
26 Antilock Brake
System Pump
27 Electric Park Brake
28 Rear Window
Defogger
41 Brake
Vacuum Pump
42 Cooling Fan K2
45 Cooling Fan K1
Mini Fuses Usage 1 Transmission
Control Module
2 Engine Control
Module Battery
5 Engine Control
Module Ignition
8 Ignition Coils ‐Even
9 Ignition Coils ‐Odd

Black plate (41,1)Buick LaCrosse Owner Manual - 2011
Vehicle Care 10-41
Mini Fuses Usage10 Engine Control
Module
11 Post Catalytic
Converter Oxygen
Sensor Heater
13 Trans Ignition/Fuel
System Control
Module
16 MAF
17 Airbag Module
18 SBZ Ignition
23 Variable Effort
Steering
29 Power Lumbar, Left
32 Body Control
Module
33 Heated Seat
34 Antilock Brake
System Valves
35 Amplifier Mini Fuses Usage
36 AFL Ignition
37 Right High Beam
38 Left High Beam
46 Cooling Fan Relay
47 Pre Catalytic
Converter Oxygen
Sensor Heater
48 Fog Lamps
49 Right High Intensity
Discharge
Headlamp
50 Left High Intensity
Discharge
Headlamp
51 Horn
52 Cluster Ignition
53 Inside Rearview
Mirror, Rear
Vision Camera,
Vacuum Pump Mini Fuses Usage
54 Heating, Ventilation
and Air Conditioning
55 Outside Rearview
Mirror, Universal
Garage Door
Opener, Window
Switch
56 Windshield Washer
60 Heated Mirror
62 Canister Vent
64 AFL Battery
65 Theft‐Deterrent Horn
67 Fuel System Control
Module
69 Regulated Voltage
Control Sensor
70 Ultrasonic Parking
Assist/Side
Blind Zone

Black plate (42,1)Buick LaCrosse Owner Manual - 2011
10-42 Vehicle Care
Mini Relays Usage7 Engine Control
Module
9 Cooling Fan
13 Cooling Fan
15 Run/Crank
17 Rear Window
Defogger
Micro
Relays Usage
2 Starter
4 Wiper Speed
5 Wiper Control
10 Cooling Fan
14 Headlamp
Low BeamInstrument Panel Fuse
Block
The instrument panel fuse block
is located in the instrument panel,
on the driver side of the vehicle.
To access the fuses, open the
fuse panel door by pulling down
at the top.
Press in on the sides of the door to
release it from the instrument panel.
Pull the door toward you to release
it from the hinge.

Black plate (43,1)Buick LaCrosse Owner Manual - 2011
Vehicle Care 10-43
Instrument Panel Fuse BlockThe vehicle may not be equipped
with all of the fuses, relays, and
features shown.
Fuses Usage
1 Steering Wheel
Controls Backlight
2 Body Control
Module 7
3 Body Control
Module 5
4 Radio
5 OnStar Universal
Hands‐Free Phone
6 Power Outlet 1
7 Power Outlet 2
8 Body Control
Module 1
9 Body Control
Module 4 Fuses Usage
10 Body Control
Module 8
11 Front Heater
Ventilation Air
Conditioning/Blower
12 Passenger Seat
13 Driver Seat
14 Diagnostic Link
Connector
15 Airbag
16 Trunk
17 Heater Ventilation
Air Conditioning
Controller

Black plate (44,1)Buick LaCrosse Owner Manual - 2011
10-44 Vehicle Care
FusesUsage
18 Radio, OnStar,
Universal
Hands‐Free Phone
19 Display
20 Automatic Occupant
Sensing
21 Instrument Panel
Cluster
22 Discrete Logic
Ignition Switch
23 Body Control
Module 3 Fuses
Usage
24 Body Control
Module 2
25 Rear Heater
Ventilation Air
Conditioning/Blower
26 AC/DC Inverter
Relays Usage
R1 Trunk Relay
R2 Not Used
R3 Power Outlet RelayRear Compartment Fuse
Block
The rear compartment fuse block is
located on the left side of the trunk
behind a cover.

Black plate (45,1)Buick LaCrosse Owner Manual - 2011
Vehicle Care 10-45
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Mini Fuses Usage 5 Not Used
6 Heated Steering
Wheel Mini Fuses Usage
7 Not Used
8 Not Used
12 Not Used
15 Not Used
16 Not Used Mini Fuses Usage
17 Not Used
18 PEPS
19 Not Used
20 Rear Sunshade,
Ventilated Seats
21 Not Used
22 Not Used
23 Not Used
24 Not Used
25 Not Used
26 Not Used
27 Not Used
28 Not Used
29 Not Used
30 Not Used