headlamp BUICK LACROSSE 2006 Owner's Guide

The vertical headlamp aiming screws are located under
the hood near the headlamps.
The adjustment screw can be turned with a
6 mm male hex.To adjust the vertical aim on the headlamps, do the
following:
1. Open the hood. SeeHood Release on page 5-11
for more information.
2. Locate the aim dot on the lens of the low-beam
headlamp.
3. Measure the distance from the ground to the aim
dot on the low-beam headlamp. Record the
distance.
5-49

4. At the wall or other at surface, measure from the
ground upward (A) to the recorded distance from
Step 3 and mark it.
Notice:Do not cover a headlamp to improve beam
cut-off when aiming. Covering a headlamp may
cause excessive heat build-up which may cause
damage to the headlamp.
5. Draw or tape a horizontal line (B) on the wall or at
surface the width of the vehicle at the height of the
mark in Step 4.
6. Turn on the low-beam headlamps and place a
piece of cardboard or equivalent in front of the
headlamp not being adjusted. Do not place directly
on the headlamp. This allows only the beam of
light from the headlamp being adjusted to be seen
on the at surface.7. Locate the vertical headlamp aiming screws, which
are under the hood near each headlamp assembly.
The adjustment screw can be turned with a
6 mm male hex.
8. Turn the vertical aiming screw until the headlamp
beam is aimed to the horizontal tape line. Turn it
clockwise or counterclockwise to raise or lower the
angle of the beam.
9. Make sure that the light from the headlamp is
positioned at the bottom edge of the horizontal tape
line. The lamp on the left (A) shows the correct
headlamp aim. The lamp on the right (B) shows the
incorrect headlamp aim.
10. Repeat Steps 7 through 9 for the opposite
headlamp.
5-50

Bulb Replacement
For the proper type of replacement bulbs, see
Replacement Bulbs on page 5-56.
For any bulb changing procedure not listed in this
section, contact your dealer.
Halogen Bulbs
{CAUTION:
Halogen bulbs have pressurized gas inside and
can burst if you drop or scratch the bulb. You or
others could be injured. Be sure to read and
follow the instructions on the bulb package.
Headlamps and Sidemarker Lamps
A. Sidemarker Lamp
B. Low-Beam Headlamp
C. High-Beam Headlamp
5-51

Low-Beam Headlamp and
Sidemarker Bulbs
To replace a low-beam headlamp or sidemarker bulb,
do the following:
1. Open the hood. SeeHood Release on page 5-11
for more information.
2. Remove the fastener from the front fascia.
The fastener is located inboard of the headlamp
assembly, near the high-beam headlamp.
3. Pull up on the plastic retaining clip (C) while
pushing rearward on the headlamp. Align the square
cut-out on the retaining clip with the notch on the
headlamp.
4. Remove the screw (A) from the metal headlamp
retainer to pull up and release the headlamp
assembly.
5. Remove the push pin (B) retaining the front fascia.
5-52

6. Pull back on the front fascia and then pull the
headlamp assembly out from the vehicle. Moving
the headlamp up and down slightly may help with
its removal.
You may have someone assist you with this step.
7. Remove the access cover from behind the bulb
being replaced.
8. Turn the bulb socket one-quarter of a turn to
remove it from the headlamp assembly.
9. Holding the base of the socket, pull the old bulb
from the socket.
10. Replace with a new bulb.
11. Reverse all the steps to reassemble the headlamp
assembly.
When replacing the plastic retaining clip, push down
on it while pushing rearward on the headlamp,
making sure the headlamp assembly is secure.
High-Beam Headlamp Bulbs
To replace the high-beam headlamp bulb, do the
following:
1. Open the hood. SeeHood Release on page 5-11
for more information.
2. Locate the high-beam headlamp bulb socket.3. Remove the access cover from behind the bulb
being replaced.
4. Turn the bulb socket counterclockwise and pull it
from the headlamp assembly.
5. Holding the base of the socket, pull the old bulb
from the socket.
6. Replace with a new bulb.
7. Reverse Steps 2 through 4 to reinstall.
Front Turn Signal and
Parking Lamps
To replace a front turn signal/parking lamp bulb in the
front fascia, do the following:
1. Locate the front turn signal/parking bulb socket by
reaching behind the front bumper.
2. Turn the bulb socket counterclockwise and pull it
out of the assembly.
3. Holding the base of the socket, pull the old bulb
from the socket.
4. Push the new bulb into the socket.
5. Reverse Steps 1 through 3 to reinstall.
5-53

Replacement Bulbs
Exterior Lamps Bulb Number
Back-Up Lamps 921
Fog Lamp H11
Front Turn Signal and
Parking Lamps3157NAK
License Plate Lamp 194
Headlamps
High-Beam H9
Low-Beam H11
Front/Rear Sidemarker and
Taillamp194
Stoplamps and Taillamps 3057
For replacement bulbs not listed here, contact your
dealer.
Windshield Replacement
Your vehicle is equipped with an acoustic windshield.
If you ever have to have your windshield replaced
be sure to get an acoustic windshield so you will
continue to have the benets an acoustic windshield
can provide.
Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected for wear
or cracking. SeeScheduled Maintenance on page 6-4
for more information on wiper blade inspection.
Replacement blades come in different types and are
removed in different ways. For the proper type and
length, seeNormal Maintenance Replacement Parts
on page 6-13. Here’s how to remove the wiper blade:
1. Pull the windshield wiper arm connector away from
the windshield.
5-56

{CAUTION:
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.
SeeChanging a Flat Tire on page 5-73for more
information.
Used Replacement Wheels
{CAUTION:
Putting a used wheel on your vehicle is
dangerous. You cannot know how it has been
used or how far it has been driven. It could
fail suddenly and cause a crash. If you have
to replace a wheel, use a new GM original
equipment wheel.
5-71

Electrical System
Add-On Electrical Equipment
Notice:Don’t add anything electrical to your
vehicle unless you check with your dealer rst.
Some electrical equipment can damage your vehicle
and the damage wouldn’t be covered by your
warranty. Some add-on electrical equipment can
keep other components from working as they should.
Your vehicle has an airbag system. Before attempting
to add anything electrical to your vehicle, seeServicing
Your Airbag-Equipped Vehicle on page 1-69.
Headlamp Wiring
The headlamp wiring is protected by a circuit breaker
in the underhood fuse block. An electrical overload
will cause the headlamps to go on and off, or in some
cases to remain off. If this happens, have the headlamp
system checked right away.
Windshield Wiper Fuses
The windshield wiper motor is protected by a circuit
breaker and a fuse. If the motor overheats due to heavy
snow, etc., the wiper will stop until the motor cools.
If the overload is caused by some electrical problem,
have it xed.
Power Windows and Other
Power Options
Circuit breakers in the instrument panel fuse block
protect the power windows and other power accessories.
When the current load is too heavy, the circuit breaker
opens and closes, protecting the circuit until the
problem is xed.
Fuses and Circuit Breakers
The wiring circuits in the vehicle are protected from
short circuits by a combination of fuses, circuit breakers
and in the fuse block wiring itself. This greatly reduces
the chance of res caused by electrical problems.
Look at the silver-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Make sure
a bad fuse is replaced with a new one of the identical
size and rating.
5-93

Micro-Relays Usage
34 Headlamp High Beam
35 HDM Module
36 Fog Lamp
37 Ignition 1
38 Air Conditioning Compressor
39 Horn
40 Powertrain
41 Fuel Pump
Mini-Relays Usage
42 Fan 1
43 Fan 3
44 Windshield Wiper High
45 Windshield Wiper
46 Fan 2
48 Crank
Spare Fuses Usage
49 Spare
50 Spare
51 Spare
52 Spare
53 Spare
54 Spare
Fuse Puller Usage
55 Fuse Puller
Diodes Usage
§Air Conditioner Compressor
Clutch Diode
5-97

Audio System(s) (cont.)
Theft-Deterrent Feature...............................3-126
Understanding Radio Reception...................3-128
XM™ Satellite Radio Antenna System...........3-130
Automatic Door Lock.......................................2-12
Automatic Transaxle
Fluid..........................................................5-21
Operation...................................................2-26
B
Backglass Antenna........................................3-129
Battery..........................................................5-42
Exterior Lighting Battery Saver......................3-15
Run-Down Protection...................................3-18
Before Leaving on a Long Trip.........................4-22
Brake
Anti-Lock Brake System (ABS)........................ 4-7
Emergencies................................................ 4-9
Parking......................................................2-30
System Warning Light..................................3-38
Brakes..........................................................5-39
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-9
Break-In, New Vehicle.....................................2-22
Bulb Replacement...........................................5-51
Front Turn Signal and Parking Lamps.............5-53
Halogen Bulbs............................................5-51
Headlamp Aiming........................................5-48Bulb Replacement (cont.)
Replacement Bulbs......................................5-56
Taillamps, Turn Signal, Sidemarker, Stoplamps,
and Back-Up Lamps.................................5-54
Buying New Tires...........................................5-66
C
Calibration.....................................................3-57
California Fuel.................................................. 5-6
California Proposition 65 Warning....................... 5-4
Canadian Owners................................................ ii
Capacities and Specications............................5-98
Carbon Monoxide...................2-13, 2-34, 4-26, 4-38
Care of
Safety Belts................................................5-87
Your CD Player.........................................3-129
Your CDs .................................................3-128
Center Console Storage Area...........................2-46
Center Front Passenger Position, Safety Belts....1-24
Center Seat..................................................... 1-8
Chains, Tire...................................................5-72
Charging System Light....................................3-37
Check
Engine Light...............................................3-41
Check Gas Cap Light......................................3-49
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-90
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