2004 CHEVROLET OPTRA headlamp

3. Remove the bulb socket by turning it
counterclockwise.
4. Remove the bulb from the socket by pressing the
bulb and turning it counterclockwise.
5. Install the appropriate bulb into the socket.
6. Replace the bulb socket into the lamp housing.
Turn the bulb socket clockwise to secure.
7. Replace the trim cover.
8. Close the trunk or liftgate.Replacement Bulbs
Lamps Bulb Number
Back-Up 94535571
Center High-Mounted
Stoplamp/Sidemarker - Front
and Rear94535587
Headlamps - High-Beam 94535541
Headlamps - Low-Beam 94535546
Tail/Stoplamp 94535574
Turn Signal - Front and Parking
Lamp94535578
Turn Signal - Rear 94535572
For any bulb not listed here, contact your dealer.
5-49

Wheel Alignment and Tire Balance
The wheels on your vehicle were aligned and balanced
carefully at the factory to give you the longest tire life
and best overall performance.
Scheduled wheel alignment and wheel balancing are
not needed. However, if you notice unusual tire wear or
your vehicle pulling one way or the other, the alignment
may need to be reset. If you notice your vehicle
vibrating when driving on a smooth road, your wheels
may need to be rebalanced.
Wheel Replacement
Replace any wheel that is bent, cracked or badly rusted
or corroded. If wheel nuts keep coming loose, the
wheel, wheel bolts and wheel nuts should be replaced.
If the wheel leaks air, replace it (except some
aluminum wheels, which can sometimes be repaired).
See your dealer if any of these conditions exist.
Your dealer will know the kind of wheel you need.
Each new wheel should have the same load-carrying
capacity, diameter, width, offset and be mounted
the same way as the one it replaces.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 or tire chain
clearance to the body and chassis.
SeeChanging a Flat Tire on page 5-64for more
information.
5-62

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 1-60.
Headlamp Wiring
The headlamp wiring is protected by fuses, one for each
headlamp, in the fuse block. An electrical overload
will cause the lamps to turn off. If this happens, have
your headlamp wiring checked right away.
Windshield Wiper Fuses
The windshield wiper motor is protected by an internal
circuit breaker and a fuse. 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 in the fuse block protect the power
windows 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.
5-82

Fuses Usage
HEAD LAMPS Headlamps
ECM Engine Control Module
IGN COIL Ignition Coil
I/P FUSE Instrument Panel Fuse
FUEL PUMP Fuel Pump
A/C Air Conditioning
HORN Horn
HI BEAM Headlamp High-Beam
DRIVER’S
PWR WNDWDriver’s Power Window
STOP LAMPS Stoplamps
DR/LCK Door Lock
MIR HTD Heated Mirror
FRT FOG Front Fog
ILLUM LTLicense Plate Lamp, Parking
Lamp Left
INJ Injector
ENG SNSREvaporative Emission (EVAP)
Canister Purge Solenoid, Heated
Oxygen Sensor (HO2S), Cooling Fan
Relay, CMP SensorFuses Usage
LOW BEAM LT Headlamp Low-Beam Left
ILLUM RTIllumination Circuit, Parking Lamp
Right
LOW BEAM RT Headlamp Low-Beam Right
SPARE Spare
SPARE Spare
SPARE Spare
BATT PWR Battery Power
ABS Anti-lock Brake System
HVAC BLWR HVAC Blower
IGN 2 Ignition 2
IGN 1 Ignition 1
FUSE PLR Fuse Puller
COOL FAN
LOWCooling Fan Low
DEFOG Defog
COOL FAN HI Cooling Fan High
PWR WNDW Power Window
5-88

Relays Usage
COOL FAN
LOWCooling Fan Low
FRT FOG Front Fog
ILLUM Illumination Relay
A/C CMPRSR Air Conditioning Compressor
HORN Horn
DEFOG DefogRelays Usage
FUEL PUMP Fuel Pump
MAIN Main Relay
COOL FAN HI Cooling Fan High
PWR WNDW Power Window
HEAD LAMPS Headlamp Relay
5-89

Brake
Parking......................................................2-28
System Inspection.......................................6-24
System Warning Light..................................3-30
Brake Fluid....................................................5-35
Brake Wear...................................................5-36
Brakes..........................................................5-35
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-18
Bulb Replacement...........................................5-44
Center High-Mounted Stoplamp (CHMSL)........5-48
Fog Lamps.................................................5-46
Front Turn Signal and Parking Lamps.............5-45
Halogen Bulbs............................................5-44
Headlamp Aiming........................................5-44
Headlamps.................................................5-44
Replacement Bulbs......................................5-49
Sidemarker Lamps.......................................5-47
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps........................................5-48
Turn Signal Lamps......................................5-46
Buying New Tires...........................................5-60
C
California Fuel.................................................. 5-6
Canada – Customer Assistance.......................... 7-4
Canadian Owners................................................ iiCanadian Roadside Assistance........................... 7-7
Canceling the Rear Door Security Lock..............2-10
Capacities and Specifications............................5-90
Carbon Monoxide...........4-25, 4-37, 2-11, 2-13, 2-33
Care of
Safety Belts................................................5-76
Your CD Player...........................................3-52
Your CDs ...................................................3-52
Cassette Tape Player Service...........................6-18
CD Messages........................................3-44, 3-50
Center High-Mounted Stoplamp (CHMSL)...........5-48
Center Rear Passenger Position, Safety Belts.....1-28
Chains, Tires..................................................5-63
Charging System Light....................................3-29
Check
Engine Light...............................................3-33
Check Engine Light.........................................3-33
Checking Coolant............................................5-23
Checking Engine Oil........................................5-14
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-79
Child Restraints
Child Restraint Systems...............................1-35
Infants and Young Children...........................1-31
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-42
Older Children.............................................1-29
Securing a Child Restraint Designed for the
LATCH System........................................1-45
2

D
Daytime Running Lamps (DRL).........................3-13
Daytime Running Lamps Indicator Light.............3-38
Defensive Driving............................................. 4-2
Defogging and Defrosting.................................3-21
Dinghy Towing................................................4-32
Disarming the System.....................................2-17
Doing Your Own Service Work........................... 5-4
Dolly Towing..................................................4-32
Dome Lamp...................................................3-15
Door
Ajar Light...................................................3-38
Central Door Unlocking System....................... 2-8
Door Ajar Reminder....................................... 2-9
Locks.......................................................... 2-7
Power Door Locks......................................... 2-9
Rear Door Security Locks............................... 2-9
Driver
Position, Safety Belt.....................................1-15
Seat Height Adjuster...................................... 1-4
Driving
At Night.....................................................4-14
City...........................................................4-19
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Freeway.....................................................4-20Driving (cont.)
Hill and Mountain Roads..............................4-23
In Rain and on Wet Roads...........................4-16
Winter........................................................4-25
Driving on Snow or Ice....................................4-26
Driving Through Deep Standing Water...............4-18
Driving Through Flowing Water.........................4-18
E
Electrical System
Add-On Equipment......................................5-82
Fuses and Circuit Breakers...........................5-83
Headlamp Wiring.........................................5-82
Power Windows and Other Power Options......5-82
Windshield Wiper Fuses...............................5-82
Emergency Trunk Release Handle.....................2-12
Emissions Inspection and Maintenance
Programs...................................................3-35
Engine
Air Cleaner/Filter.........................................5-18
Battery.......................................................5-38
Check and Service Engine Soon Light............3-33
Coolant......................................................5-21
Coolant Heater............................................2-21
Coolant Temperature Gage...........................3-32
Cooling System Inspection............................6-23
4

G
Gage
Engine Coolant Temperature.........................3-32
Fuel..........................................................3-39
Speedometer..............................................3-27
Tachometer.................................................3-27
Gasoline
Octane........................................................ 5-5
Specifications............................................... 5-5
Glove Box.....................................................2-37
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
H
Hazard Warning Flashers................................... 3-4
Head Restraints............................................... 1-7
Headlamp
Aiming.......................................................5-44
Headlamp High/Low-Beam Changer.................... 3-7
Headlamp Wiring............................................5-82
Headlamps....................................................5-44
Bulb Replacement.......................................5-44
Front Turn Signal and Parking Lamps.............5-45
Halogen Bulbs............................................5-44
Sidemarker Lamps.......................................5-47
Turn Signal Lamps......................................5-46
Height Adjuster, Driver Seat............................... 1-4Highbeam On Light.........................................3-38
Highway Hypnosis...........................................4-22
Hill and Mountain Roads..................................4-23
Hold Mode.....................................................2-26
Hold Mode Functions......................................2-26
Hold Mode Light.............................................3-32
Hood
Checking Things Under................................5-10
Release.....................................................5-10
Horn............................................................... 3-5
How the System Alarm is Activated...................2-17
How to Add Coolant to the Coolant
Surge Tank.................................................5-29
How to Check................................................5-58
How to Check and Add Fluid............................5-21
How to Check Power Steering Fluid..................5-33
How to Detect a Tamper Condition....................2-17
How to Inspect the Engine Air Cleaner/Filter.......5-19
How to Turn Off the System Alarm....................2-17
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-15
Hydraulic Clutch.............................................5-20
Hydroplaning..................................................4-18
I
If No Steam Is Coming From Your Engine..........5-26
If Steam Is Coming From Your Engine...............5-25
If the Light Is Flashing.....................................3-34
6