2004 CHEVROLET OPTRA hood open

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.
Bulb Replacement
For bulb types, seeReplacement Bulbs on page 5-49.
For any bulb changing procedures not listed in this
section, contact 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
1. Open the hood.
2. Remove the two bolts and the one nut that retain
the headlamp assembly.
3. Disconnect the wiring harness connector from the
rear of the bulb.
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4. Remove the headlamp cap by turning it
counterclockwise.
5. Release the spring that retains the bulb.
6. Remove the old bulb.
7. Install the new bulb.
8. Install the bulb retaining spring.
9. Install the wiring harness connector to the bulb and
replace the headlamp cap by turning it clockwise.
10. Reverse Steps 1 through 2 to install the headlamp
assembly. Then, check the lamps.
Front Turn Signal and Parking
Lamps
1. Open the hood.
2. Remove the two bolts and the one nut and remove
the headlamp assembly.
3. Turn the bulb socket counterclockwise.
4. Pull the bulb socket out of the lamp housing.
5. Press the bulb inward and turn it counterclockwise
to remove it from the bulb socket.
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Sidemarker Lamps (Front)
1. Open the hood.
2. Remove the headlamp assembly.
3. Turn the front sidemarker bulb socket
counterclockwise.
4. Pull the front sidemarker bulb socket out of the front
bumper.
5. Pull the old bulb straight out of the bulb socket
6. Push the new bulb straight into the socket.
7. Reverse Steps 1 through 4 to install the assembly.
Sidemarker Lamps (Rear)
1. Reach inside of the rear bumper and locate the
socket.
2. Turn the rear sidemarker bulb socket
counterclockwise.
3. Pull the rear sidemaker bulb socket out of the rear
bumper.
4. Pull the old bulb straight out from the bulb socket.
5. Push the new bulb straight into the socket.
6. Reverse Steps 1 through 3 to install the bulb socket.
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Center High-Mounted Stoplamp
(CHMSL)
1. Open the trunk or liftgate.
2. Remove the two screws which are recessed on the
underside of the hood.
3. Disconnect the wiring harness connector before you
remove the lamp housing.
4. Remove the lamp housing.
5. Remove the two screws and the reflector assembly.6. Remove the bulb by pulling it straight out of the
bulb socket.
7. Install the new bulb.
8. Reverse Steps 1 through 5 to install the lamp
housing. Then, check the lamp.
Taillamps, Turn Signal, Stoplamps
and Back-up Lamps
1. Open the trunk or liftgate.
2. Open the trim cover.
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