BUICK PARK AVENUE 1999 Owners Manual

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6-33 Replacing Brake System Parts
The braking system on a vehicle is complex. Its many
parts have to be of top quality and work well together if
the vehicle is to have really good braking. Your vehicle
was designed and tested with top
-quality GM brake
parts. When you replace parts of your braking
system
-- for example, when your brake linings wear
down and you have to have new ones put in
-- be sure
you get new approved GM replacement parts. If you
don't, your brakes may no longer work properly. For
example, if someone puts in brake linings that are wrong
for your vehicle, the balance between your front and
rear brakes can change
-- for the worse. The braking
performance you've come to expect can change in many
other ways if someone puts in the wrong replacement
brake parts.
Battery
Your new vehicle comes with an ACDelco Freedom

battery. When it's time for a new battery, we recommend
an ACDelco Freedom battery. Get one that has the
replacement number shown on the original
battery's label.
Vehicle Storage
If you're not going to drive your vehicle for 25 days
or more, remove the black, negative (
-) cable from the
battery. This will help keep your battery from
running down.
CAUTION:
Batteries have acid that can burn you and gas
that can explode. You can be badly hurt if you
aren't careful. See ªJump Startingº in the Index
for tips on working around a battery without
getting hurt.
Contact your dealer to learn how to prepare your vehicle
for longer storage periods.
Also, for your audio system, see ªTheft
-Deterrent
Featureº in the Index.
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6-34
Bulb Replacement
The following procedure tells you how to replace your
headlamp bulbs. For the type of bulb to use, see
ªReplacement Bulbsº in the Index. For any bulbs not
listed in this section, contact your 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.
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6-35
1. Remove the thumb screws by turning
them counterclockwise.2. Pull the headlamp away from the car.
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6-36
3. Remove the bulb socket
by turning it one
-quarter
of a 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. Reverse the above steps 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.
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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.
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6-38
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.
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6-39
2. Turn the vertical aiming screw (C) until the level
bubble (D) is lined up with zero.
Front Turn Signal
The front turn signal bulbs can be accessed by removing
the headlamp assembly as described in the previous bulb
replacement procedure.
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 of a turn and
pull it out.
Remove the old bulb by pulling it straight out of the
socket. Replace the bulb and turn the bulb assembly
back into place.
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6-40 Rear Turn Signal/Stoplamp
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 from only the side you
want to access. The turn signal and a stoplamp can
now be accessed.
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6-41
6. Pull the taillamp assembly away from the vehicle.
7. Remove the bulb socket
assembly by turning the
socket one
-quarter of a
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. Reverse the above steps to replace the
taillamp assembly.
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6-42 Rear Turn Signals/Stoplamps/Back-Up
Lamps
Turn lamps, stoplamps and back-up bulbs are located
behind the taillamp assembly along the trunk lid. The
following instructions explain how to access these bulbs.
1. There are four studs
located at the edge of the
trunk lid. Remove the
protective vinyl caps
from the studs.
2. Use a 10 mm wrench to remove the nuts from
the studs.
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