2001 BUICK PARK AVENUE Owner's Manual

6-34
Bulb Replacement
The following procedure tells you how to replace the
bulbs for some of the exterior lamps. For the type of
bulb to use, see ªReplacement Bulbsº in the Index. For
any bulbs not listed in this section, contact your dealer's
service department.
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
Each headlamp is attached by thumb screws.

6-35
1. Remove the thumb screws by turning
them counterclockwise.2. Pull the headlamp away from the vehicle.

6-36
3. Remove the bulb socket
by turning it one
-quarter
turn counterclockwise,
while pressing it firmly.
Then pull it out. You can
use pliers to remove the
bulb socket if you are
unable to do it by hand.
4. Remove the wire connector from the bulb by
lifting the lock tab and pulling it away from the
plastic base.
5. Replace the old bulb with a new bulb.
6. Reverse Steps 1 through 4 to reassemble the
lamp assembly.
When reassembling the lamp, make sure to align the
pin at the outboard edge of the headlamp assembly to
the plastic retainer at the outboard edge of the vehicle.

6-37
Headlamp Aiming
The headlamp aiming device is under the hood, directly
behind the headlamps.
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.

6-38
To check the aim, the vehicle should be properly
prepared as follows:

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.
Start with the horizontal aim. The adjustment screws can be
turned with an E8 Torx
 socket or T15 Torx screwdriver.Once the horizontal aim is adjusted, then adjust the
vertical aim.
1. Turn the horizontal
aiming screw (A)
until the
indicator (B) is
lined up with zero.

6-39
2. Turn the vertical aiming screw (C) until the level
bubble (D) is lined up with zero.Front Turn Signal
1. Remove the headlamp assembly as described in the
headlamp removal procedure previously in this section.
2. Once the headlamp
assembly has been
removed, reach down
from the top of the
vehicle and, while
pressing the lock tab on
the socket, turn the
socket one
-quarter turn
counterclockwise and
pull it out.
3. Remove the old bulb by pulling it straight out
of the socket.
4. Replace the bulb and turn the bulb assembly back
into place.

6-40 Rear Quarterpanel Turn Signal Lamps
and Stoplamps
There are turn lamps and stoplamps that are part of the
taillamp assembly located at the rear of the vehicle on
each rear quarterpanel. The following instructions
explain how to access these bulbs. (To access the lamps
located on the trunk lid see the information following.)
1. Open the trunk. On either side of the rear of the
trunk is a plastic retainer that holds the cargo net and
taillamp assembly in place.
2. Unhook the cargo net
from the cargo net
retainer and remove the
retainer by turning
it counterclockwise.
3. Remove the plastic retaining screws on the
trunk's interior.
4. Pull back the trunk trim panel.
5. Beneath the trim panel are three nuts that secure
the taillamp assembly. Remove these nuts with a
10 mm wrench. Remove the nuts only from the side
you want to access. The turn signal and a stoplamp
can now be accessed.

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6. Pull the taillamp assembly away from the vehicle.
7. Remove the bulb socket
assembly by turning the
socket one
-quarter turn
counterclockwise and
pulling it out.
8. Once the socket has
been removed, pull the
bulb straight out to
remove it from
the socket.
9. Replace it with a new bulb.
10. Reverse Steps 1 through 8 to reinstall the
taillamp assembly.