lock BUICK LACROSSE 2008 Owners Manual

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.Bulb Replacement
For the proper type of replacement bulbs, see
Replacement Bulbs on page 5-61.
For any bulb changing procedure not listed in this
section, contact your dealer/retailer.
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.
5-58

5. Remove the two wing nuts holding the taillamp
assembly in place.
6. Pull out the taillamp assembly and disconnect the
wiring harness.A. Taillamp
B. Back-up
C. TaillampD. Stoplamp/Taillamp/Turn
Signal
E. Sidemarker
7. Turn the bulb socket counterclockwise to remove it.
8. Replace with a new bulb.
9. Turn the bulb socket clockwise to reinstall.
10. Reverse these steps to reinstall the taillamp
assembly.
5-60

License Plate Lamp
To replace one of these bulbs:
1. Remove the screws for either of the license plate
lamps.
2. Turn and pull the license plate lamp forward
through the fascia opening.3. Turn the bulb socket counterclockwise and pull the
bulb straight out of the socket.
4. Install the new bulb.
5. Reverse Steps 1 through 3 to reinstall the license
plate lamp.
Replacement Bulbs
Exterior Lamps Bulb Number
Back-Up Lamps 921
Rear Sidemarker, License Plate
Lamp, and Taillamp194
Stoplamps and Taillamps 3057
For replacement bulbs not listed here, contact your
dealer/retailer.
5-61

To decrease the tire’s air-pressure use the pointed end of
the valve cap, a pencil-style air pressure gage,or a key.
You have two minutes to match each tire and wheel
position. If it takes longer than two minutes to match any
tire and wheel position, the matching process stops and
you need to start over.
The TPMS sensor matching process is outlined below:
1. Set the parking brake.
2. Turn the ignition switch to ON/RUN with the
engine off.
3. Press the Remote Keyless Entry (RKE) transmitter’s
LOCK and UNLOCK buttons at the same time for
approximately ve seconds. The horn sounds twice
to signal the receiver is in relearn mode and the
TPMS sensor matching process can begin.
4. Start with the driver side front tire.
5. Remove the valve cap from the tire’s valve stem.
Activate the TPMS sensor by increasing or
decreasing the tire’s air pressure for 10 seconds, or
until a horn chirp sounds. The horn chirp, which
may take up to 30 seconds to sound, conrms that
the sensor identication code has been matched to
the tire/wheel position.6. Proceed to the passenger side front tire, and repeat
the procedure in Step 5.
7. Proceed to the passenger side rear tire, and repeat
the procedure in Step 5.
8. Proceed to the driver side rear tire, and repeat the
procedure in Step 5.
9. After hearing the conrming horn chirp for the driver
side rear tire, the horn chirps two more times to
signal the tire learning process has ended. Turn the
ignition switch to LOCK/OFF.
10. Set all four tires to the recommended air pressure
level as indicated on the tire and loading information
label.
11. Put the valve caps back on the valve stems.
Tire Inspection and Rotation
We recommend that you regularly inspect your
vehicle’s tires, including the spare tire, for signs of
wear or damage. SeeWhen It Is Time for New
Tires on page 5-77for more information.
Tires should be rotated every 5,000 to 8,000 miles
(8 000 to 13 000 km). SeeScheduled Maintenance
on page 6-4.
5-75

Different Size Tires and Wheels
If you add wheels or tires that are a different size than
your original equipment wheels and tires, this may
affect the way your vehicle performs, including its
braking, ride and handling characteristics, stability, and
resistance to rollover. Additionally, if your vehicle has
electronic systems such as, anti-lock brakes, traction
control, and electronic stability control, the performance
of these systems can be affected.
{CAUTION:
If you add different sized wheels, your vehicle
may not provide an acceptable level of
performance and safety if tires not
recommended for those wheels are selected.
You may increase the chance that you will
crash and suffer serious injury. Only use GM
specic wheel and tire systems developed for
your vehicle, and have them properly installed
by a GM certied technician.
SeeBuying New Tires on page 5-78andAccessories
and Modifications on page 5-3for additional information.
Uniform Tire Quality Grading
Quality grades can be found where applicable on
the tire sidewall between tread shoulder and
maximum section width. For example:
Treadwear 200 Traction AA Temperature A
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration (NHTSA), which
grades tires by treadwear, traction, and
temperature performance. This applies only to
vehicles sold in the United States. The grades are
molded on the sidewalls of most passenger car
tires. The Uniform Tire Quality Grading (UTQG)
system does not apply to deep tread, winter-type
snow tires, space-saver, or temporary use spare
tires, tires with nominal rim diameters of
10 to 12 inches (25 to 30 cm), or to some
limited-production tires.
While the tires available on General Motors
passenger cars and light trucks may vary with
respect to these grades, they must also conform
to federal safety requirements and additional
General Motors Tire Performance Criteria (TPC)
standards.
5-80

Changing a Flat Tire
If a tire goes at, avoid further tire and wheel damage
by driving slowly to a level place. Turn on your vehicle’s
hazard warning ashers. SeeHazard Warning Flashers
on page 3-6for more information.
{CAUTION:
Changing a tire can be dangerous. The vehicle
can slip off the jack and roll over or fall on you
or other people. You and they could be badly
injured or even killed. Find a level place to
change your tire. To help prevent the vehicle
from moving:
1. Set the parking brake rmly.
2. Put the shift lever in PARK (P).
3. Turn off the engine and do not restart
while the vehicle is raised.
4. Do not allow passengers to remain in the
vehicle.
CAUTION: (Continued)
CAUTION: (Continued)
To be even more certain the vehicle will not
move, you should put blocks at the front and
rear of the tire farthest away from the one
being changed. That would be the tire, on the
other side, at the opposite end of the vehicle.
When your vehicle has a at tire, use the following
example as a guide to assist you in the placement of
wheel blocks.
The following information tells you how to use the jack
and change a tire.
5-87

Removing the Spare Tire and Tools
The equipment you will need is located in the trunk.
1. Open the trunk. SeeTrunk on page 2-14for more
information.
2. Remove the convenience net if the vehicle has one.
3. Remove the spare tire cover.
4. Turn the wing nut counterclockwise and remove it.
5. Remove the compact spare tire.6. Turn the nut holding the jack counterclockwise and
remove it. Then remove the jack and wrench.
5-88

The tools you will need to change a tire include the
jack (A), extension and protection guide (B), and wheel
wrench (C).
Removing the Flat Tire and
Installing the Spare Tire
You vehicle may have wheels with exposed wheel nuts.
If so, go to the Removing the Wheel Nuts section. If the
vehicle has steel wheel covers with plastic nut caps, the
wheel nuts are hidden behind the cap. To remove the
wheel cover:
1. Do a safety check before proceeding. SeeChanging
a Flat Tire on page 5-87for more information.
2. Use the wheel wrench to loosen the plastic wheel
nut caps in a counterclockwise direction.
If needed, nish loosening them by hand. The nut
caps will not come off of the wheel cover.
The edge of the wheel cover could be sharp, so do
not try to remove the cover with your bare hands.
Do not drop the cap or lay it face down, as it could
become scratched or damaged.
Store the wheel cover in the trunk until you have
the at tire repaired or replaced.
Once you have removed the wheel cover or plastic nut
caps, use the following procedure to remove the at tire
and install the spare tire.
5-89

Removing the Wheel Nuts
1. Place the wheel wrench securely over the wheel
nut. Turn the wheel wrench counterclockwise to
loosen all the wheel nuts, but do no remove them yet.
2. Turn the jack handle clockwise to raise the jack
lift head.
3. Find the jacking location using the diagram above
and corresponding triangular-shaped hoisting
notches located on the underside of the vehicle’s
plastic molding.The front location is about 6.5 inches (16.5 cm)
from the rear edge of the front wheel well. The rear
location is about 9 inches (22.8 cm) from the front
edge of the rear wheel well.
{CAUTION:
Getting under a vehicle when it is jacked up is
dangerous. If the vehicle slips off the jack you
could be badly injured or killed. Never get
under a vehicle when it is supported only by
a jack.
{CAUTION:
Raising your vehicle with the jack improperly
positioned can damage the vehicle and even
make the vehicle fall. To help avoid personal
injury and vehicle damage, be sure to t the
jack lift head into the proper location before
raising the vehicle.
4. Put the compact spare tire near you.
5-90

5. Raise the vehicle by turning the jack handle
clockwise. Raise the vehicle far enough off the
ground for the compact spare tire to t under the
vehicle.6. Remove all wheel nuts and take off the at tire.
5-91