2002 CADILLAC SEVILLE Owners Manual

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.
Your vehicle also has electronic wear sensors that let
you know when the brake pads are significantly worn
and new pads are needed. The CHANGE BRAKE
PADS message will be displayed on the Driver
Information Center when the brake pads are worn and
need to be replaced. See ªChange Brake Pads Messageº
in the Index.
CAUTION:
The CHANGE BRAKE PADS message or the
high
-pitched warning sound means that soon
your brakes won't work well. That could lead
to an accident. When the CHANGE BRAKE
PADS message comes on and stays on, 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.

6-33
Properly torqued wheel nuts are necessary to help
prevent brake pulsation. When tires are rotated, inspect
brake pads for wear and evenly tighten wheel nuts in the
proper sequence to GM torque specifications.
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.
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 need 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.

6-34
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.
WARNING: Battery posts, terminals and related
accessories contain lead and lead compounds, chemicals
known to the State of California to cause cancer and
reproductive harm. Wash hands after handling.
The battery is located under the rear seat cushion. To
access the battery, see ªRemoving the Rear Seat
Cushionº in the Index. You don't need to access the
battery to jump start your vehicle. See ªJump Startingº
in the Index.
CAUTION:
A battery that isn't properly vented can let
sulfuric acid fumes into the area under the rear
seat cushion. These fumes can damage your rear
seat safety belt systems. You may not be able to
see this damage, and the safety belts might not
provide the protection needed in a crash. If a
replacement battery is ever needed, it must be
vented in the same manner as the original
battery. Always make sure that the vent hose is
properly reattached before reinstalling the
seat cushion.

6-35
To be sure the vent hose (A) is properly attached, the
vent hose connectors (B) must be securely reattached to
the vent outlets (C) on each side of the battery, and the
vent assembly grommet (D) must be secured to the
floor pan (E).
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.
To r e
-program the power windows, see ªPower
Windowsº in the Index.

6-36
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 your dealer.
High Intensity Discharge (HID) Lighting
(If Equipped)
CAUTION:
The low beam high intensity discharge lighting
system operates at a very high voltage. If you try
to service any of the system components, you
could be seriously injured. Have your dealer or a
qualified technician service them.
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.

6-37 Headlamps
1. Open the hood.
2. Remove the upper filler panel by loosening all the
screws and then removing the grommets.
3. Remove the two bolts fastening the headlamp to the
headlamp mounting bracket.
4. Pull the headlamp straight forward to disengage the
locator pin at the outboard edge of the headlamp.
5. To replace the low-beam bulb, first remove the
rubber housing cover on the rear of the lamp.

6-38
6. Then, turn the bulb socket counterclockwise to
unlock the socket from the lamp housing.7. Remove the headlamp bulb socket.

6-39
8. After removing the wiring harness connector from
the headlamp bulb socket, replace the bulb
assembly. Reconnect it to the wiring harness and
reinstall the headlamp bulb assembly back into the
headlamp housing.
9. After reinstalling the bulb and socket, reinstall the
rubber cover. Make sure it fully covers the
headlamp socket.
10. To replace the high
-beam bulb, turn the bulb socket
counterclockwise to unlock the socket from the
lamp housing. Follow the instructions in Step 6
through 8 to install the new bulb.
11. Reinstall the upper filler panel by inserting the
grommets, along with the screws, back into
the holes.