headlamp BUICK LACROSSE 2010 Owner's Guide

Vehicle Care 9-37
A. Bulb Socket
B. Lamp Assembly
C. Bulb
3. Turn the bulb socket (A) counterclockwise to remove from
lamp assembly (C).
4. Pull the bulb (B) straight out of the bulb socket. 5. Push the replacement bulb
straight into the bulb socket and
turn the bulb socket clockwise to
install into lamp assembly.
6. Move the lamp assembly into the trunk lid engaging the clip
side first.
7. Push on the lamp side opposite the clip until the lamp assembly
snaps into place.
Replacement Bulbs
Exterior Lamp Bulb
Number
Back-Up Lamp W16W
Daytime Running
Lamp (Up-Level) 3157K
Fog Lamp H11LL
Front Turn Signal/
Park Lamp 3757NAK
Headlamp High
Beam (Base) H9
Headlamp Low
Beam (Base) H11LL
License Plate Lamp W5WLL
Rear Turn Signal 3757AK
For replacement bulbs not listed
here, contact your dealer/retailer.

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.

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.

9-66 Vehicle Care
Wheel Replacement
Replace any wheel that is bent,
cracked, or badly rusted or
corroded. If wheel nuts keep coming
loose, the wheel, wheel bolts, and
wheel nuts should be replaced.
If the wheel leaks air, replace it
(except some aluminum wheels,
which can sometimes be repaired).
See your dealer/retailer if any of
these conditions exist.
Your dealer/retailer will know the
kind of wheel you need.
Each new wheel should have the
same load-carrying capacity,
diameter, width, offset, and be
mounted the same way as the one it
replaces.If you need to replace any of the
wheels, wheel bolts, wheel nuts,
or Tire Pressure Monitor System
(TPMS) sensors, replace them only
with new GM original equipment
parts. This way, you will be sure to
have the right wheel, wheel bolts,
wheel nuts, and TPMS sensors for
the vehicle.
{WARNING
Using the wrong replacement
wheels, wheel bolts, or wheel
nuts on your vehicle can be
dangerous. It could affect the
braking and handling of your
vehicle, make your tires lose air
and make you lose control. You
could have a collision in which
you or others could be injured.
Always use the correct wheel,
wheel bolts, and wheel nuts for
replacement.Notice:
The wrong wheel can
also cause problems with bearing
life, brake cooling, speedometer
or odometer calibration,
headlamp aim, bumper height,
vehicle ground clearance, and tire
or tire chain clearance to the
body and chassis.
See If a Tire Goes Flat
on
page 9‑67for more information.

INDEX i-1
A
Accessories andModifications . . . . . . . . . . . . . . . . . . 9-3
Accessory Power . . . . . . . . . . . . . . 8-20
Adaptive Forward Lighting (AFL) . . . . . . . . . . . . . . . . . 5-3
Add-On Electrical
Equipment . . . . . . . . . . . . . . . . . . . 8-60
Adding Equipment to the Airbag-Equipped Vehicle . . . . . 2-38
Adjustments
Lumbar, Front Seats . . . . . . . . . . . 2-5
Air Cleaner/Filter, Engine . . . . . . 9-15
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . . 7-8
Air Intake . . . . . . . . . . . . . . . . . . . . . . . 7-8
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 7-8
Airbag System
Check . . . . . . . . . . . . . . . . . . . . . . . . 2-39
How Does an AirbagRestrain? . . . . . . . . . . . . . . . . . . . 2-30
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . . 2-32 Airbag System (cont.)
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . 2-30
What Will You See After
an Airbag Inflates? . . . . . . . . . . 2-30
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . 2-28
Where Are the Airbags? . . . . . . 2-27
Airbags
Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . 2-38
Passenger Status Indicator . . . 4-16
Readiness Light . . . . . . . . . . . . . . 4-16
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . 2-37
System Check . . . . . . . . . . . . . . . . 2-24
Alarm System Anti-Theft . . . . . . . . . . . . . . . . . . . . . 1-13
All-Wheel Drive . . . . . . . . . . . . . . . . 8-30
AM-FM Radio . . . . . . . . . . . . . . . . . . 6-12
Antenna Satellite Radio . . . . . . . . . . . . . . . . 6-19
Anti-Theft
Alarm System . . . . . . . . . . . . . . . . 1-13
Alarm System Messages . . . . . 4-37 Antilock Brake
System (ABS) . . . . . . . . . . . . . . . . 8-31
Warning Light . . . . . . . . . . . . . . . . . 4-21
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 9-82
Interior . . . . . . . . . . . . . . . . . . . . . . . . 9-86
Assistance Program,
Roadside . . . . . . . . . . . . . . . . . . . . . 12-6
Audio Players . . . . . . . . . . . . . . . . . 6-20 CD . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20
Audio System
Backglass Antenna . . . . . . . . . . . 6-19
Radio Reception . . . . . . . . . . . . . . 6-18
Theft-Deterrent Feature . . . . . . . . 6-2
Automatic Headlamp System . . . . . . . . . . . . . 5-3
Automatic Climate Control System . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Automatic Transmission . . . . . . . 8-27 Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 9-15
Manual Mode . . . . . . . . . . . . . . . . . 8-29
Shiftlock Control SystemCheck . . . . . . . . . . . . . . . . . . . . . . . 9-27
Auxiliary Devices . . . . . . . . 6-28, 6-31

i-2 INDEX
B
Battery . . . . . . . . . . . . . . . . . . . . . . . . 9-26Jump Starting . . . . . . . . . . . . . . . . . 9-75
Load Management . . . . . . . . . . . . . 5-6
Power Protection . . . . . . . . . . . . . . 5-7
Voltage and ChargingMessages . . . . . . . . . . . . . . . . . . . 4-33
Blade Replacement, Wiper . . . . 9-29
Bluetooth . . . . 6-42, 6-43, 6-46, 6-57
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . 9-24 Antilock . . . . . . . . . . . . . . . . . . . . . . . 8-31
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 8-34
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 9-25
Parking . . . . . . . . . . . . . . . . . . . . . . . 8-32
System Messages . . . . . . . . . . . . 4-33
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Break-In, New Vehicle . . . . . . . . . 8-17
Bulb Replacement . . . . . . . . . . . . . 9-37
Fog Lamps . . . . . . . . . . . . . . 5-5, 9-35
Halogen Bulbs . . . . . . . . . . . . . . . . 9-33
Headlamp Aiming . . . . . . . . . . . . . 9-30
Headlamps . . . . . . . . . . . . . . . . . . . 9-33
Headlamps, Front TurnSignal and Parking
Lamps . . . . . . . . . . . . . . . . . . . . . . 9-33 Bulb Replacement (cont.)
High Intensity Discharge
(HID) Lighting . . . . . . . . . . . . . . . 9-33
License Plate Lamps . . . . . . . . . 9-36
Taillamps, Turn Signal,
Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . . . 9-35
Buying New Tires . . . . . . . . . . . . . . 9-61
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 4-8
California Fuel Requirements . . . . . . . . . . . 8-51
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . 9-3
Warning . . . . . . . . . . . . . . . . . . . . . . . 9-2
Camera, Rear Vision . . . . . . . . . . 8-46
Canadian Vehicle Owners . . . . . . . . iv
Capacities and Specifications . . . . . . . . . . . . . . . . 11-2
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 8-26
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Winter Driving . . . . . . . . . . . . . . . . . 8-9 Cautions, Danger, and
Warnings . . . . . . . . . . . . . . . . . . . . . . . . iv
CD DVD Player . . . . . . . . . . . . . . . . . . . 6-22
CD Player . . . . . . . . . . . . . . . . . . . . . 6-20
Center Console Storage . . . . . . . . 3-1
Chains, Tire . . . . . . . . . . . . . . . . . . . 9-67
Charging System Light . . . . . . . . 4-17
Check Engine Lamp . . . . . . . . . . . . . . . . . 4-17
Ignition Transmission Lock . . . 9-28
Child Restraints Infants and YoungChildren . . . . . . . . . . . . . . . . . . . . . 2-42
Lower Anchors and Tethers for Children . . . . . . . . . 2-48
Older Children . . . . . . . . . . . . . . . . 2-40
Securing . . . . . . . . . . . . . . . . 2-55, 2-57
Systems . . . . . . . . . . . . . . . . . . . . . . 2-45
Where to Put the Restraint . . . 2-46
Circuit Breakers . . . . . . . . . . . . . . . 9-38
Cleaning
Exterior Care . . . . . . . . . . . . . . . . . 9-82
Interior Care . . . . . . . . . . . . . . . . . . 9-86

INDEX i-5
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-49Additives . . . . . . . . . . . . . . . . . . . . . 8-51
Economy Driving . . . . . . . . . . . . . . 8-2
Filling a Portable Fuel
Container . . . . . . . . . . . . . . . . . . . 8-53
Filling the Tank . . . . . . . . . . . . . . . 8-52
Fuels in Foreign Countries . . . . 8-51
Gage . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Gasoline Specifications . . . . . . . 8-50
Low Fuel Warning Light . . . . . . . 4-24
Recommended . . . . . . . . . . . . . . . 8-50
Requirements, California . . . . . 8-51
System Messages . . . . . . . . . . . . 4-36
Fuses Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 9-39
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . . . 9-38
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 9-41
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 9-43G
GagesEngine CoolantTemperature . . . . . . . . . . . . . . . . 4-15
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Odometer . . . . . . . . . . . . . . . . . . . . . 4-14
Speedometer . . . . . . . . . . . . . . . . . 4-14
Tachometer . . . . . . . . . . . . . . . . . . . 4-14
Warning Lights and Indicators . . . . . . . . . . . . . . . . . . . 4-12
Garage Door Opener . . . . . . . . . . 4-45
Programming . . . . . . . . . . . . . . . . . 4-45
Gasoline Specifications . . . . . . . . . . . . . . . . . 8-50
General Information Service and Maintenance . . . . . 10-1
Towing . . . . . . . . . . . . . . . . . . . . . . . . 8-54
Vehicle Care . . . . . . . . . . . . . . . . . . . 9-2
Glove Box . . . . . . . . . . . . . . . . . . . . . . 3-1
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . 12-5
H
Halogen Bulbs . . . . . . . . . . . . . . . . . 9-33
Hazard Warning Flashers . . . . . . . 5-4
Head Restraints . . . . . . . . . . . . . . . . 2-2
Head-Up Display (HUD) . . . . . . . 4-28
HeadlampsAdaptive Forward
Lighting (AFL) . . . . . . . . . . . . . . . . 5-3
Aiming . . . . . . . . . . . . . . . . . . . . . . . . 9-30
Automatic . . . . . . . . . . . . . . . . . . . . . . 5-3
Bulb Replacement . . . . . . . . . . . . 9-33
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . 5-2
Flash-to-Pass . . . . . . . . . . . . . . . . . . 5-2
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . 9-33
High-Beam On Light . . . . . . . . . . 4-24
High/Low Beam Changer . . . . . . 5-2
Heated Steering Wheel . . . . . . . . . . . . . . . . 4-7

i-6 INDEX
Heated and Ventilated FrontSeats . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Heated Front Seats . . . . . . . . . . . . . 2-8
Heated Mirrors . . . . . . . . . . . . . . . . . 1-16
High-Beam On Light . . . . . . . . . . . 4-24
Highway Hypnosis . . . . . . . . . . . . . . 8-8
Hill and Mountain Roads . . . . . . . . 8-9
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
How to Wear Safety Belts Properly . . . . . . . . . . . . . . . . . . . . . . 2-13
I
Ignition Positions . . . . . . . . 8-18, 8-19
Ignition Transmission Lock
Check . . . . . . . . . . . . . . . . . . . . . . . . 9-28
Illumination Control . . . . . . . . . . . . . 5-5
Immobilizer . . . . . . . . . . . . . . . . . . . . 1-13
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . 2-42
Instrument Cluster . . . . . . . . . . . . . 4-13
Instrument Panel . . . . . . . . . . . . . . . 5-5
Introduction . . . . . . . . . . . . . . . . . . .iii, 6-2
J
Jump Starting . . . . . . . . . . . . . . . . . . 9-75
K
Key and Lock Messages . . . . . . . 4-36
Keyless Entry Remote (RKE) System . . . 1-3, 1-5
Keyless Entry System . . . . . . . . . . 1-3
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
L
Labeling, Tire Sidewall . . . . . . . . . 9-47
Lamp Messages . . . . . . . . . . . . . . . 4-36
Lamps Daytime Running (DRL) . . . . . . . 5-2
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Exterior Controls . . . . . . . . . . . . . . . 5-1
Exterior Lamps Off
Reminder . . . . . . . . . . . . . . . . . . . . 5-2
Headlamps, Front Turn
Signal and Parking
Lamps . . . . . . . . . . . . . . . . . . . . . . 9-33
License Plate . . . . . . . . . . . . . . . . . 9-36 Lamps (cont.)
Malfunction Indicator . . . . . . . . . 4-17
Reading . . . . . . . . . . . . . . . . . . . . . . . 5-5
Sun Visor . . . . . . . . . . . . . . . . . . . . . . 5-5
Lap-Shoulder Belt . . . . . . . . . . . . . 2-19
LATCH System Replacing Parts After aCrash . . . . . . . . . . . . . . . . . . . . . . . 2-55
Latch, Lower Anchors and
Tethers for Children . . . . . . . . . . 2-48
Light Electric Parking Brake . . . . . . . . 4-20
Lighting Adaptive Forward . . . . . . . . . . . . . . 5-3
Entry . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Lights Airbag Readiness . . . . . . . . . . . . . 4-16
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 4-21
Charging System . . . . . . . . . . . . . 4-17
Cruise Control . . . . . . . . . . . . . . . . 4-25
Engine Oil Pressure . . . . . . . . . . 4-23