2004 CHEVROLET CLASSIC Owners Manual

Front Turn Signal Lamps
1. Remove the headlamp assembly as described in
Bulb Replacement on page 5-45.
2. Once it has been removed, press the tab on the
white socket while twisting it less than one-quarter
turn counterclockwise and pull it out.3. Remove the old bulb and replace it with a new one.
4. Turn the socket back into place.
5. Return the lamp assembly to its original position.
Be sure to line up the holes in the lamp assembly
to the round ends of the mounting pins.
6. Press down on the two latches to hook in the lamp
assembly.
Center High-Mounted Stoplamp
(CHMSL)
1. Open the trunk and locate the CHMSL housing on
the underside of the rear window shelf.
2. Twist the socket one-quarter turn counterclockwise
to remove it.
3. Gently remove burned out bulb and replace with a
new one.
4. Turn the socket back into place.
5. Close the trunk.
5-47

Taillamps, Turn Signal, Stoplamps
and Back-up Lamps
A. Rear Turn Signal Lamp
B. Taillamp/Stoplamp
C. Back-Up Lamp
1. Open the trunk.2. Unscrew the fastener
located on the inside of
the trunk at the rear
of the vehicle.
3. Gently pull back the trunk trim.
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4. Remove the three plastic wing nuts. 5. Pull out the taillamp assembly to expose the
backplate.
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6. Carefully remove the backplate by gently pulling up
on the two upper and two lower tabs.
7. Gently wiggle the bulb to remove it from the socket.
Replace the bulb.
8. Reverse the steps to reassemble the backplate and
attach the taillamp assembly to the vehicle. Make
sure that all four tabs of the backplate are securely
fastened to the taillamp assembly before reinstalling
it on the vehicle.
9. When securing the lamp assembly back into place,
align the assembly so that the trunk lid doesn’t
contact it.
10. Close the trunk.
Replacement Bulbs
Exterior Lamp Bulb Number
Back-Up/Rear Turn 3156
Center High-Mounted Stoplamp
(Interior Mounted)912
Front Parking/Turn 3157A or 3157NA
Front Sidemarker 24
High-Beam Headlamp 9005
Low-Beam Headlamp 9006
Tail/Stoplamp 3057
For any bulb not listed here, contact your dealer.
5-50

Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected at least
twice a year for wear and cracking. SeeAt Least Twice
a Year on page 6-17for more information. For the
proper type and length, seeCapacities and
Specications on page 5-95.
To replace the wiper blade assembly, do the following:
1. Pull the windshield wiper arm away from the
windshield.
2. Press the tab that holds the wiper blade to the arm.
3. Pull the assembly down to release it from the
U-hooked end of the wiper arm and slide the
assembly away from the arm.
4. Slide in the new wiper blade assembly and snap it
into place.
5. Repeat Steps 1 through 4 for the other wiper, if
necessary.
5-51

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 GM Warranty booklet for details. For additional
information refer to the tire manufacturer’s booklet
included with your vehicle’s Owner’s Manual.
{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 “Loading Your
Vehicle” in the Index.
Underinated 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.
CAUTION: (Continued)
CAUTION: (Continued)

Overinated 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.
Tire Sidewall Labeling
Useful information about a tire is molded into its
sidewall. The examples below show a typical passenger
car tire and a compact spare tire sidewall.
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(A) Tire Size:The tire size code is a combination of
letters and numbers used to define a particular
tire’s width, height, aspect ratio, construction type and
service description. See the “Tire Size” illustration
later in this section for more detail.
(B) Tire Performance Criteria Specication (TPC
Spec):Original equipment tires designed to GM’s
specific tire performance criteria have a TPC
specification code molded onto the sidewall. GM’s TPC
specifications meet or exceed all federal safety
guidelines.
(C) Department of Transportation (DOT):The
Department of Transportation (DOT) code indicates that
the tire is in compliance with the U.S. Department of
Transportation Motor Vehicle Safety Standards.
(D) Tire Identication Number (TIN):The letters and
numbers following DOT code are the Tire Identification
Number (TIN). The TIN shows the manufacturer
and plant code, tire size, and date the tire was
manufactured. The TIN is molded onto both sides of the
tire, although only one side may have the date of
manufacture.
Passenger Car Tire Example
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(E) Tire Ply Material:The type of cord and number of
plies in the sidewall and under the tread.
(F) Uniform Tire Quality Grading (UTQG):Tire
manufacturers are required to grade tires based on three
performance factors: treadwear, traction and
temperature resistance. For more information see
Uniform Tire Quality Grading on page 5-63.
(G) Maximum Cold Ination Load Limit:Maximum
load that can be carried and the maximum pressure
needed to support that load. For more information on
recommended tire pressure seeInation - Tire Pressure
on page 5-59andLoading Your Vehicle on page 4-32.
Compact Spare Tire Example
5-54