2004 CHEVROLET CORVETTE headlamp

What to Use
Use a mixture of one-halfclean, drinkable waterand
one-half DEX-COOL®coolant which will not damage
aluminum parts. If you use this coolant mixture, you do
not need to add anything else.
{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle’s coolant warning system is set for the
proper coolant mixture. With plain water or the
wrong mixture, your engine could get too hot
but you would not get the overheat warning.
Your engine could catch re and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant.
Notice:If you use an improper coolant mixture,
your engine could overheat and be badly damaged.
The repair cost would not be covered by your
warranty. Too much water in the mixture can freeze
and crack the engine, radiator, heater core and
other parts.If you have to add coolant more than four times a year,
have your dealer check your cooling system.
Notice:If you use the proper coolant, you do not
have to add extra inhibitors or additives which claim
to improve the system. These can be harmful.
Checking Coolant
The coolant surge tank is located in the engine
compartment behind the passenger’s side headlamp.
SeeEngine Compartment Overview on page 5-12
for more information on location.
5-24

Bulb Replacement
For the proper type of replacement bulb, seeBulb
Replacement on page 5-48.
For any bulb changing procedure 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
1. The headlamp doors need to be halfway open.
Turn the headlamps on, then quickly back to the
parking lamps setting. You may have to do
this a few times to get the half-open position.
You can also open the headlamp doors manually
by turning the adjuster counterclockwise.
5-48

2. Remove the screws on each side of the headlamp
bezel.
3. Open the hood.
4. To remove the bezel, pull the sides slightly outward
and tilt the bezel forward. Pull the clip centered
above the lens outward. Be careful not to scratch
the paint on the vehicle.5. Reach behind the lamp and turn the bulb
counterclockwise to remove it. Don’t touch the
halogen bulbs. The inner bulb is the high beam and
the outer bulb is the low beam.
6. Disconnect the desired bulb from the wiring
harness.
7. Reverse the steps listed previously with a new bulb.
5-49

Back-Up Lamps
You can access the back-up lamps through the inboard
taillamp opening. SeeTaillamps and Turn Signal
Lamps on page 5-50.
1. Squeeze the tab on the socket while turning it
counterclockwise to remove it from the assembly.
2. Remove the bulb from the socket.
3. Reverse the steps listed previously with a new bulb.
Replacement Bulbs
Exterior Lamp Bulb Number
High-Beam Headlamp 9005
Low-Beam Headlamp 9006
Back-Up 2057
Rear Stop/Tail and Turn Signal 3057
For any bulb replacements or procedures not listed
here, please consult your dealer.
Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected each time
maintenance is performed. See “Wiper Blade Check”
underScheduled Maintenance on page 6-4for
more information.
Replacement blades come in different types and are
removed in different ways. For the proper type and
length, seeNormal Maintenance Replacement Parts on
page 6-13.
It is a good idea to clean or replace the wiper blade
assembly every six months.
Notice:Allowing the wiper blade arm to touch the
windshield when no wiper blade is installed
could damage the windshield. Any damage that
occurs would not be covered by your warranty. Do
not allow the wiper blade arm to touch the
windshield.
5-52

If you need to replace any of your wheels, wheel bolts
or wheel nuts, replace them only with new GM
original equipment parts. This way, you will be sure to
have the right wheel, wheel bolts and wheel nuts
for your vehicle.
{CAUTION:
Using the wrong replacement wheels, wheel
bolts or wheel nuts on your vehicle can be
dangerous. It could affect the braking and
handling of your vehicle, make your tires lose
air and make you lose control. You could have
a collision in which you or others could be
injured. Always use the correct wheel, wheel
bolts and wheel nuts for replacement.
Notice:The wrong wheel can also cause problems
with bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper height,
vehicle ground clearance and tire clearance to the
body and chassis.
{CAUTION:
Rust or dirt on a wheel, or on the parts to
which it is fastened, can make wheel nuts
become loose after a time. The wheel could
come off and cause a crash. When you change
a wheel, remove any rust or dirt from places
where the wheel attaches to the vehicle. In an
emergency, you can use a cloth or a paper
towel to do this; but be sure to use a scraper
or wire brush later, if you need to, to get all the
rust or dirt off.
{CAUTION:
Never use oil or grease on studs or the
threads of the wheel nuts. If you do, the wheel
nuts might come loose and the wheel could
fall off, causing a crash.
5-69

Service Parts Identication Label
You will find this label located inside the glovebox. It is
very helpful if you ever need to order parts. On this
label is:
•your VIN,
•the model designation,
•paint information and
•a list of all production options and special equipment
Be sure that this label is not removed from the
vehicle.
Electrical System
Add-On Electrical Equipment
Notice:Don’t add anything electrical to your vehicle
unless you check with your dealer rst. Some
electrical equipment can damage your vehicle and
the damage wouldn’t be covered by your warranty.
Some add-on electrical equipment can keep other
components from working as they should.
Your vehicle has an air bag system. Before attempting
to add anything electrical to your vehicle, see
Servicing Your Air Bag-Equipped Vehicle on page 1-49.
Headlamp Wiring
The headlamp wiring is protected by a circuit breaker.
An electrical overload will cause the lamps to go on and
off, or in some cases to remain off. If this happens,
have your headlamp wiring checked right away.
Windshield Wiper Fuses
The windshield wiper motor is protected by a fuse and
an internal circuit breaker. If the motor overheats
due to heavy snow, etc., the wiper will stop until the
motor cools. If the overload is caused by some electrical
problem and not snow, etc., be sure to get it fixed.
Power Windows and Other Power
Options
Circuit breakers protect the power seats and other
power accessories. When the current load is too heavy,
the circuit breaker opens and closes, protecting the
circuit until the problem is fixed or goes away.
5-92

Fuse Usage
22 Body Control Module – Ignition 3
23 Body Control Module – Ignition 2
24 Radio Antenna
25Body Control Module – Ignition 1
Instrument Panel Control
26 Hatch/Trunk Release
27 HVAC Controls
28 Bose Speakers
29 Diagnostic
30 Right Door Control Module
31 Power Feed Door Right
32 Fuel Tank Door
33 Door Control Module Left
34 Power Feed Door Left
47 Ignition 1
48 Rear Defogger
49 Blank
50 Ignition 2Fuse Usage
51 Blower Motor
52 Starter
53 Blank
Relay Usage
37Monitored (Inadvertent) Load
Control
38 Right Daytime Running Lamp
39 Hatch/Trunk Release
40 Left Daytime Running Lamp
41 Tonneau Release
42 Courtesy Lamps
43Automatic Lamp Control Parking
Lamps
44 Automatic Lamp Control Headlamps
45 Bose Speakers
46 Rear Defogger
Circuit Breaker Usage
35 Driver Power Seat
36 Passenger Power Seat
54 Headlamps
5-95

Engine Compartment Fuse Block
There is one fuse block in the engine compartment
located on the passenger’s side of the vehicle in front of
the battery.
To remove the fuse block cover, turn the knob
counterclockwise.
Fuse Usage
1 Rear Fog Lamp
2 Approach
3 Right Headlamp Motor
4 Left Headlamp Motor
5Anti-Lock Brakes, Selective Ride
Control
6 Fog Lamp
7 Blank
5-96