2010 BUICK LACROSSE Owner's Manual

Vehicle Care 9-39
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 components on the
vehicle may damage it. Always
keep the covers on any electrical
component.
Engine Compartment Fuse Block
J-Case Fuses Usage
6 Wiper
12 Starter
21 Rear Power
Windows
22 Sunroof J-Case
Fuses Usage
24 Front Power
Windows
26 Antilock Brake
System Pump
27 Electric Park Brake

9-40 Vehicle Care
J-CaseFuses Usage
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
10 Engine Control
Module Mini Fuses Usage
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
36 AFL Ignition
37 Right High Beam Mini Fuses Usage
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
54 Heating, Ventilation
and Air Conditioning

Vehicle Care 9-41
Mini Fuses Usage55 Outside Rear View
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 Mini Relays Usage
7 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.

9-42 Vehicle Care
Pull the door toward you to release
it from the hinge.
Instrument Panel Fuse BlockFuses 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
10 Body Control
Module 8
11 Front Heater
Ventilation Air
Conditioning/Blower
12 Passenger Seat

Vehicle Care 9-43
FusesUsage
13 Driver Seat
14 Diagnostic Link
Connector
15 Airbag
16 Trunk
17 Heater Ventilation
Air Conditioning
Controller
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 Relay
Rear Compartment Fuse
Block
The rear compartment fuse block is
located on the left side of the trunk
behind a cover.

9-44 Vehicle Care
Mini Fuses Usage5 Not Used
6 Heated Steering
Wheel
7 Not Used Mini Fuses Usage
8 Not Used
12 Not Used
15 Not Used Mini Fuses Usage
16 Side Blind Zone,
Ultrasonic Rear Park
Assist
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

Vehicle Care 9-45
Mini Fuses Usage28 Not Used
29 Not Used
30 Not Used
31 Electronic
Suspension Control
32 Rear Seat
Infotainment
33 All-Wheel Drive J-Case
Fuses Usage
1 Not Used
2 Not Used
3 Not Used
4 Not Used
9 Not Used
10 Not Used 11 Not Used
13 Not Used
14 Not Used
34 Not Used
35 PEPS
36 Not Used
37 Not Used Relays Usage
K1 Not Used
K2 Seat Ventilation,
Sunshade
K3 Heated Steering
Wheel
K4 Not Used

9-46 Vehicle Care
Wheels and Tires
Tires
Your new vehicle comes with
high-quality tires made by a
leading tire manufacturer. If you
ever have questions about your
tire warranty and where to
obtain service, see your vehicle
Warranty booklet for details. For
additional information refer to
the tire manufacturer.
{WARNING
Poorly maintained and improperly
used tires are dangerous.
.Overloading your tires can
cause overheating as a result
of too much flexing. You
could have an air-out and a
serious accident. SeeVehicle
Load Limits on page 8‑12.
(Continued)
WARNING (Continued)
.Underinflated tires pose the
same danger as overloaded
tires. The resulting accident
could cause serious injury.
Check all tires frequently to
maintain the recommended
pressure. Tire pressure
should be checked when your
tires are cold. See Tire
Pressure on page 9‑53.
.Overinflated tires are more
likely to be cut, punctured or
broken by a sudden
impact —such as when you
hit a pothole. Keep tires at
the recommended pressure.
.Worn, old tires can cause
accidents. If your tread is
badly worn, or if your tires
have been damaged,
replace them.
Winter Tires
If you expect to drive on snow or ice
covered roads often, you may want
to get winter tires for your vehicle.
All season tires provide good overall
performance on most surfaces but
they may not offer the traction you
would like or the same level of
performance as winter tires on snow
or ice covered roads.
Winter tires, in general, are
designed for increased traction on
snow and ice covered roads. With
winter tires, there may be decreased
dry road traction, increased road
noise, and shorter tread life. After
switching to winter tires, be alert for
changes in vehicle handling and
braking.
See your dealer/retailer for details
regarding winter tire availability and
proper tire selection. Also, see
Buying New Tires on page 9‑61.