2000 CHEVROLET IMPALA Owners Manual

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6-32 Brake Wear
Your vehicle has four-wheel disc brakes.
Disc brake pads have built
-in wear indicators that make a
high
-pitched warning sound when the brake pads are worn
and new pads are needed. The sound may come and go or
be heard all the time your vehicle is moving (except when
you are pushing on the brake pedal firmly).
CAUTION:
The brake wear warning sound means that soon
your brakes won't work well. That could lead to
an accident. When you hear the brake wear
warning sound, have your vehicle serviced.
NOTICE:
Continuing to drive with worn-out brake pads
could result in costly brake repair.
Some driving conditions or climates may cause a brake
squeal when the brakes are first applied or lightly
applied. This does not mean something is wrong with
your brakes.
Properly torqued wheel nuts are necessary to help
prevent brake pulsation. When tires are rotated, inspect
brake pads for wear and evenly torque wheel nuts in the
proper sequence to GM specifications.
If you have rear drum brakes, they don't have wear
indicators, but if you ever hear a rear brake rubbing
noise, have the rear brake linings inspected immediately.
Also, the rear brake drums should be removed and
inspected each time the tires are removed for rotation or
changing. When you have the front brake pads replaced,
have the rear brakes inspected, too.
Brake linings should always be replaced as complete
axle sets.
See ªBrake System Inspectionº in Section 7 of this manual
under Part C ªPeriodic Maintenance Inspections.º
Brake Pedal Travel
See your dealer if the brake pedal does not return to
normal height, or if there is a rapid increase in pedal
travel. This could be a sign of brake trouble.

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6-33 Brake Adjustment
Every time you apply the brakes, with or without the
vehicle moving, your brakes adjust for wear.
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 a maintenance free
ACDelco
battery. When it's time for a new battery, get
one that has the replacement number shown on the original
battery's label. We recommend an ACDelco battery.
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
For the proper type of replacement bulb, see
ªReplacement Bulbsº in the Index. For any bulb
changing procedure not listed in this section, contact the
service department of 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
A. Park/Turn Signal Lamp
B. Low
-Beam Headlamp
C. High
-Beam Headlamp
To remove the headlamps:
1. Open the hood.
2. Remove the air baffle.

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6-35
3. Remove the two headlamp fasteners by pulling
up on them.4. Gently pull the headlamp assembly away from the
vehicle and remove the electrical connector.
5. Remove the round dust caps to gain access
to the bulbs.
6. Turn the bulb counterclockwise and remove it from
the retaining ring by gently pulling it away from
the headlamp.
7. Remove the electrical connector from the bulb by
raising the lock tab and pulling the connector away
from the bulb's base.
8. Install the electrical connector to the new bulb.

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6-36
9. Install the new bulb by inserting the smallest tab on
the bulb base into the matching notch in the
retaining ring. Turn the bulb a quarter
-turn
clockwise until it stops.
10. Reverse all steps to reinstall the headlamp
assembly. Then, check the lamps.
Headlamp Aiming
If your vehicle is damaged in an accident, the headlamp
aim may be affected. Aim adjustment to the low beam
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 your vehicle to the dealer for service. However, it is
possible for you to re
-aim your headlamps by following
the procedure in the service manual for your vehicle.
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.
Front Park and Turn Signal Lamp
A. Park/Turn Signal Lamp
B. Low Beam Headlamp
C. High Beam Headlamp
To remove the assembly:
1. Open the hood.
2. Remove the air baffle.

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6-37
3. Remove the two headlamp fasteners by pulling
up on them.4. Gently pull the headlamp assembly away from the
vehicle and remove the electrical connector.
5. Remove the round dust caps to gain access
to the bulbs.
6. Turn the bulb counterclockwise and remove it from
the retaining ring by gently pulling it away from the
headlamp.
7. Remove the electrical connector from the bulb by
raising the lock tab and pulling the connector away
from the bulb's base.
8. Install the electrical connector to the bulb.

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6-38
9. Install the new bulb by inserting the smallest tab on
the bulb base into the matching notch in the
retaining ring. Turn the bulb a quarter
-turn
clockwise until it stops.
10. Reinstall the dust caps and reconnect the
electrical connector.
11. Install the headlamp assembly back to the vehicle.
12. Attach the air baffle.
13. Close the hood.
Fog Lamps (If Equipped)
1. Remove the T15 TORX
screw.
2. Pull out the lamp assembly.
3. Remove the old bulb. Do not discard! The
replacement number is printed on the bulb.
See ªReplacement Bulbsº in the Index for
more information.
4. Insert new bulb into the assembly.
5. Reinstall the lamps and screw.
Tail/Stop/Turn Signal Lamp
A. Rear Sidemarker Lamp
B. Tail/Stop/Turn Signal Lamp
To remove the rear lamp assembly:
1. Open the trunk. Remove the convenience net, if you
have one. Unhook the net from the upper wing nut.

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6-39
2. Remove the upper
(convenience net) wing
nut, if equipped.
3. Pull the carpet away from the rear of the vehicle.
4. Unscrew the two remaining wing nuts.5. Pull the assembly from the body carefully.
6. To remove a socket, press the tab, turn the socket
counterclockwise and pull it out.
7. Pull the bulb out. Do not twist it.
8. Push the new bulb into the socket.
9. Reinstall the socket in the assembly. Tighten the
socket by turning it clockwise.
10. Install the assembly and the two lower wing nuts.
11. Reinstall the carpeting.
12. Reinstall the upper (convenience net) wing nut and
convenience net, if equipped.