2010 BUICK LACROSSE fuses

Introduction v
A circle with a slash through it is a
safety symbol which means“Do
Not,” “Do not do this” or“Do not let
this happen.”
Symbols
The vehicle has components and
labels that use symbols instead of
text. Symbols are shown along with
the text describing the operation or
information relating to a specific
component, control, message, gage,
or indicator.
M: This symbol is shown when
you need to see your owner manual
for additional instructions or
information.
*: This symbol is shown when
you need to see a service manual
for additional instructions or
information. Vehicle Symbol Chart
Here are some additional symbols
that may be found on the vehicle
and what they mean. For more
information on the symbol, refer to
the index.
9:
Airbag Readiness Light
#:Air Conditioning
!:Antilock Brake System (ABS)
g:Audio Steering Wheel Controls
or OnStar®
$: Brake System Warning Light
":Charging System
I:Cruise Control
B: Engine Coolant Temperature
O:Exterior Lamps
#:Fog Lamps
.: Fuel Gage
+:Fuses
i: Headlamp High/Low-Beam
Changer
j: LATCH System Child
Restraints
*: Malfunction Indicator Lamp
::Oil Pressure
}:Power
/:Remote Vehicle Start
>:Safety Belt Reminders
7:Tire Pressure Monitor
d:Traction Control
M:Windshield Washer Fluid

4-10 Instruments and Controls
Setting the Month & Day
Format
1. Press the CONFIG button andselect Time and Date Settings,
or press the
Hbutton.
2. Highlight Set Date Format.
3. Press the SELECT button to select MM/DD/YY (month/day/
year) or DD/MM/YY (day/
month/year).
Setting the Auto Time Adjust
1. Press the CONFIG button andselect Time and Date Settings,
or press the
Hbutton.
2. Highlight Auto Time Adjust.
3. Press the SELECT button to turn Auto Time Adjust on or off.
4. Press the SELECT button to select Time Zone, and then
select the Time Zone.
5. Press the SELECT button to turn Daylight Savings on or off.
Power Outlets
The accessory power outlets can be
used to connect electrical
equipment, such as a cellular
phone.
There are two accessory power
outlets, one is located inside the
center console storage and other on
the rear of the center floor console.
Open the protective cover to use the
accessory power outlet.
Certain electrical accessories may
not be compatible with the
accessory power outlets and could
result in blown vehicle or adapter
fuses. If you experience a problem,
see your dealer/retailer for
additional information on the
accessory power outlet.
Notice: Adding any electrical
equipment to the vehicle can
damage it or keep other
components from working as
they should. The repairs would not be covered by the vehicle
warranty. Do not use equipment
exceeding maximum amperage
rating of 20 amperes. Check with
your dealer/retailer before adding
electrical equipment.
When adding electrical equipment,
be sure to follow the installation
instructions included with the
equipment.
Notice:
Improper use of the
power outlet can cause damage
not covered by the vehicle
warranty. Do not hang any type of
accessory or accessory bracket
from the plug because the power
outlets are designed for
accessory power plugs only.
Power Outlet 120 Volt Alternating
Current
The vehicle may have a power
outlet that can be used to plug in
electrical equipment that uses a
maximum limit of 150 watts.

5-4 Lighting
Hazard Warning Flashers
|
Hazard Warning Flasher:
Press this button located on the
instrument panel below the climate
control system, to make the front
and rear turn signal lamps flash on
and off. Press again to turn the
flashers off.
The hazard warning flashers turn on
automatically if the airbags deploy.
Turn and Lane-Change
Signals
Move the lever all the way up or
down to signal a turn.
An arrow on the instrument panel
cluster flashes in the direction of the
turn or lane change. Raise or lower the lever until the
arrow starts to flash to signal a lane
change. Hold it there until the lane
change is completed. If the lever is
briefly pressed and released, the
turn signal flashes three times.
The turn and lane-change signal
can be turned off manually by
moving the lever back to its original
position.
If after signaling a turn or lane
change the arrow flashes rapidly or
does not come on, a signal bulb
might be burned out.
Have the bulbs replaced. If the bulb
is not burned out, check the fuse.
See
Fuses and Circuit Breakers
on
page 9‑38.

Vehicle Care 9-1
Vehicle Care
General Information
General Information . . . . . . . . . . . 9-2
California Proposition65 Warning . . . . . . . . . . . . . . . . . . 9-2
California Perchlorate Materials Requirements . . . . . . . . . . . . . . . 9-3
Accessories and Modifications . . . . . . . . . . . . . . . . 9-3
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . . 9-4
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 9-6
Engine Oil . . . . . . . . . . . . . . . . . . . 9-11
Engine Oil Life System . . . . . . 9-13
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . 9-15
Engine Air Cleaner/Filter . . . . . 9-15
Cooling System . . . . . . . . . . . . . . 9-17
Engine Coolant . . . . . . . . . . . . . . 9-18
Engine Overheating . . . . . . . . . 9-20
Overheated Engine Protection Operating Mode . . . . . . . . . . . . 9-21
Power Steering Fluid . . . . . . . . 9-22 Washer Fluid . . . . . . . . . . . . . . . . 9-23
Brakes . . . . . . . . . . . . . . . . . . . . . . . 9-24
Brake Fluid . . . . . . . . . . . . . . . . . . 9-25
Battery . . . . . . . . . . . . . . . . . . . . . . . 9-26
Starter Switch Check . . . . . . . . 9-27
Automatic Transmission Shift
Lock Control System
Check . . . . . . . . . . . . . . . . . . . . . . 9-27
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . 9-28
Park Brake and P (Park) Mechanism Check . . . . . . . . . 9-28
Wiper Blade Replacement . . . 9-29Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 9-30
Bulb Replacement
Bulb Replacement . . . . . . . . . . . 9-33
Halogen Bulbs . . . . . . . . . . . . . . . 9-33
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . 9-33
Headlamps, Front Turn Signal and Parking Lamps . . . . . . . . . 9-33
Fog Lamps . . . . . . . . . . . . . . . . . . 9-35 Taillamps, Turn Signal,
Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . . . 9-35
License Plate Lamp . . . . . . . . . . 9-36
Replacement Bulbs . . . . . . . . . . 9-37
Electrical System
Electrical System Overload . . . . . . . . . . . . . . . . . . . 9-38
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . . 9-38
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . 9-39
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . 9-41
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . 9-43
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . 9-46
Winter Tires . . . . . . . . . . . . . . . . . . 9-46
Tire Sidewall Labeling . . . . . . . 9-47
Tire Designations . . . . . . . . . . . . 9-49
Tire Terminology and
Definitions . . . . . . . . . . . . . . . . . . 9-50
Tire Pressure . . . . . . . . . . . . . . . . 9-53
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . 9-54

9-38 Vehicle Care
Electrical System
Electrical System
Overload
The vehicle has fuses and circuit
breakers to protect against an
electrical system overload.
When the current electrical load is
too heavy, the circuit breaker opens
and closes, protecting the circuit
until the current load returns to
normal or the problem is fixed. This
greatly reduces the chance of circuit
overload and fire caused by
electrical problems.
Fuses and circuit breakers protect
the following in the vehicle:
.Headlamp Wiring
.Windshield Wiper Motor
.Power Windows and other
Power Accessories
Headlamp Wiring
An electrical overload may cause
the lamps to go on and off, or in
some cases to remain off. Have the
headlamp wiring checked right away
if the lamps go on and off or
remain off.
Windshield Wipers
If the wiper motor overheats due to
heavy snow or ice, the windshield
wipers will stop until the motor cools
and will then restart.
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, seeEngine
Compartment Fuse Block
on
page 9‑39, Instrument Panel Fuse
Blockon page 9‑41, and Rear
Compartment Fuse Blockon
page 9‑43.

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.