BUICK REGAL 2001 Owners Manual

6-40
Headlamp Aiming
Your vehicle has a headlamp system equipped with
horizontal and vertical aim indicators. The aim has
been pre
-set at the factory and should need no further
adjustment. This is true even though your vertical and
horizontal aim indicators may not fall exactly on the
ª0º (zero) marks on their scales.
If your vehicle is damaged in an accident, the headlamp
aim may be affected. Aim adjustment may be necessary
if it is difficult to see lane markers (for horizontal aim),
or if oncoming drivers flash their high beams at you (for
vertical aim). If you believe your headlamps need to be
re
-aimed, we recommend that you take it to your dealer
for service; however, it is possible for you to re
-aim your
headlamps as described in the following procedure.
NOTICE:
To make sure your headlamps are aimed
properly, read all the instructions before
beginning. Failure to follow these instructions
could cause damage to headlamp parts.
To check the aim, the vehicle should be properly
prepared as follows:

The headlamps must be off for one hour prior to
aiming and must remain off during this procedure.

The vehicle must have all four tires on a perfectly
level surface.

If necessary, pads may be used on an uneven surface.

The vehicle should not have any snow, ice or mud
attached to it.

The vehicle should be fully assembled and all other
work stopped while headlamp aiming is being done.

There should not be any cargo or loading of the
vehicle, except it should have a full tank of fuel and
one person or 160 lbs. (75 kg) on the driver's seat.

Close all doors.

Tires should be properly inflated.

Rock the vehicle to stabilize the suspension.
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6-41
Driver's Side Headlamp Shown
A. Vertical Aim Adjustment Screw
B. Horizontal Aim Adjustment Screw
Open the hood and locate the vertical and horizontal
aim indicators. The aiming screw for the vertical aim
indicator (A) is at the center of the headlamp cover and
the aiming screw for the horizontal aim indicator is on
the outboard side of the headlamp cover (B).Passenger's Side Headlamp Shown
A. Horizontal Aim Adjustment Screw
B. Horizontal Block Index Plate
C. Vertical Aiming Level
Start with the horizontal aim. The adjustment screws can
be turned with an E8 Torx

socket.
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6-42
Once the horizontal aim is adjusted, then adjust the
vertical aim.
1. Turn the horizontal aiming screw until the indicator
is lined up with zero.
2. Turn the vertical aiming screw until the level bubble
is lined up with zero.
Front Parking and Turn Signal Lamps
1. Remove the headlamp assembly. Refer to the
removal procedure earlier in this section.
2. Remove the rubber bulb access cover.
3. Twist the sidemarker lamp socket counterclockwise
and pull it from the headlamp assembly.
4. Holding the base of the bulb, pull the old bulb from
the socket.
5. Push the new bulb into the socket.
6. Reverse Steps 1 through 3 to reinstall the
lamp assembly.
Center High-Mounted Stoplamp
1. Open the trunk.
2. Reach through the access opening in the trunk.
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6-43
3. Remove the old bulb by turning it one-quarter
turn counterclockwise.
4. Place the new bulb into the bulb socket.
5. Turn the bulb one
-quarter turn clockwise to reinstall.
6. Close the trunk.
Tail/Stop/Turn Signal Lamps
1. Remove the three plastic wing nuts (A).
(Pliers may be required to remove the wing nuts.)
There is one wing nut located on the outside of the carpet.
The other two are located underneath the carpet.
2. Pull the taillamp housing (B) away from the body of
the vehicle.
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6-44
3. Squeeze the tab on the socket and turn the
socket counterclockwise.
4. Pull out the socket.
5. Pull the old bulb out of the socket. (There are
two bulbs on each taillamp.)
6. Push in a new bulb.
7. Reverse these steps to reinstall the lamp assembly.
Trunk Lid Applique
1. Open the trunk lid halfway.
2. Remove the wing nuts (A) from the studs on the
applique. (There are eight wing nuts. Pliers may be
required to remove them.)
3. Remove the applique from the trunk lid.
4. Turn the sockets (B) counterclockwise.
5. Pull the bulb out of the socket.
6. Push in the new bulb.
7. Reinstall the socket in the housing and
turn clockwise.
8. Connect the applique to the lid.
9. Reconnect the wing nuts to the studs on the
applique and hand
-tighten.
10. Close the trunk lid.
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6-45 Back-Up Lamps
The back-up lamps are located in the trunk lid applique.
(Refer to the trunk lid applique removal procedure
earlier in this section for further instructions.)
1. Remove the trunk lid applique.
2. Twist and pull the back
-up lamp socket from the
trunk lid applique.
3. Twist and pull the old bulb from the back
-up
lamp socket.
4. Twist and push the new bulb into the back
-up
lamp socket.
5. Twist and push the back
-up lamp socket into the
trunk lid applique.
6. Reinstall the trunk lid applique.
Dome Lamp (If Equipped)
1. Grasp the front center and rear center positions of
the dome lamp housing and squeeze them together
until the housing releases from the base plate.
A screwdriver may be necessary to pry the
assembly loose.
2. Lift the plastic locking tab on the electrical
connector and pull the connector from the dome
lamp assembly.
3. Grasp the bulb housing located in the center of
the assembly and pull straight up.
4. Pull the bulb out of the socket.
5. Push in a new bulb.
6. Reinstall the socket into the dome lamp assembly.
7. Reconnect the dome lamp assembly to the wiring
harness, making sure the connector tab snaps
into place.
8. Reposition the dome lamp assembly to the roof,
and gently push the assembly into the base plate.
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6-46
Windshield Wiper Blade Replacement
Windshield wiper blades should be inspected at least
twice a year for wear or cracking. See ªWiper Blade
Checkº in the Index for more information.
1. Turn on the wipers to LO.
2. Turn off the ignition while the wipers are at the
outer positions of the wiper pattern. The blades are
more accessible for removal/replacement while in
this position.
3. Pull the windshield wiper arm 3 to 4 inches
(7.5 to 10 cm) away from the windshield.
4. While holding the wiper arm away from the glass,
push the release clip from under the windshield
wiper arm connecting point and slide the blade
assembly down toward the glass to remove it from
the wiper arm.
5. Slide the new wiper blade securely on the wiper arm
until you hear the release clip ªclickº into place.
For proper length and type, see ªNormal Maintenance
Replacement Partsº in the Index.
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6-47
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 Buick Warranty booklet for details.
CAUTION:
Poorly maintained and improperly used tires
are dangerous.

Overloading your tires can cause
overheating as a result of too much friction.
You could have an air
-out and a serious
accident. See ªLoading Your Vehicleº in
the Index.
CAUTION: (Continued)
CAUTION: (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.

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.
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6-48 Inflation -- Tire Pressure
The Tire-Loading Information label, which is on the
inside of the trunk lid, shows the correct inflation
pressures for your tires when they're cold. ªColdº
means your vehicle has been sitting for at least
three hours or driven no more than 1 mile (1.6 km).
NOTICE:
Don't let anyone tell you that underinflation or
overinflation is all right. It's not. If your tires
don't have enough air (underinflation), you can
get the following:

Too much flexing

Too much heat

Tire overloading

Bad wear

Bad handling

Bad fuel economy.
NOTICE: (Continued)
NOTICE: (Continued)
If your tires have too much air (overinflation),
you can get the following:

Unusual wear

Bad handling

Rough ride

Needless damage from road hazards.
When to Check
Check your tires once a month or more.
Don't forget your compact spare tire. It should be at
60 psi (420 kPa).
How to Check
Use a good quality pocket
-type gage to check tire
pressure. You can't tell if your tires are properly inflated
simply by looking at them. Radial tires may look
properly inflated even when they're underinflated.
Be sure to put the valve caps back on the valve stems.
They help prevent leaks by keeping out dirt and moisture.
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6-49 Tire Inflation Monitor System
The tire inflation monitor system can alert you to a large
change in the pressure of one tire. The system ªlearnsº
the pressure at each tire throughout the operating speed
range of your vehicle. The system normally takes
between 45 and 90 minutes of driving to learn the
tire pressures. This time may be longer depending
on your individual driving habits. Learning need not
be accumulated during a single trip. Once learned, the
system will remember the tire pressures until the system
is recalibrated.
After the system has learned tire pressures with properly
inflated tires, the LOW TIRE light will come on if the
pressure in one tire becomes 12 psi (83 kPa) lower than
the other three tires. The tire inflation monitor system
won't alert you if the pressure in more than one tire is
low, if the system is not properly calibrated, or if the
vehicle is moving faster than 70 mph (110 km/h).
The tire inflation monitor system detects differences
in tire rotation speeds that are caused by changes in
tire pressure. The system can alert you about a low
tire
-- but it doesn't replace normal tire maintenance.
See ªTiresº in the Index.When the LOW TIRE light comes on, you should stop
as soon as you can and check all your tires for damage.
(If a tire is flat, see ªIf a Tire Goes Flatº in the Index.)
Also check the tire pressure in all four tires as soon as
you can. See ªInflation
- Tire Pressureº in the Index.
The LOW TIRE light will also be displayed (while the
ignition is on) until you reset (calibrate) the system.
Don't reset the tire inflation monitor system without first
correcting the cause of the problem and checking and
adjusting the pressure in all four tires. If you reset the
system when the tire pressures are incorrect, the system
will not work properly and may not alert you when a tire
is low.
Any time you adjust a tire's pressure, rotate your tires,
or have one or more tires repaired or replaced, you'll
need to reset (calibrate) the tire inflation monitor
system. You'll also need to reset the system whenever
you buy new tires and whenever the vehicle's battery
has been disconnected.
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