2004 PONTIAC GTO headlamp

Front Turn Signal and Parking
Lamps
1. Open the hood. To access the bulbs, see
Headlamps on page 5-47.
2. Disconnect the wiring harness connector from the
headlamp assembly.
3. Turn the bulb holder counterclockwise and remove.
4. Lightly press the bulb and twist counterclockwise
out of the holder.
5. Insert the new bulb and install the bulb holder.
The bulb should be colored orange.
6. Connect the wiring harness connector.
7. SeeHeadlamps on page 5-47to replace bulb
assembly.
8. Check light operation.
Rear Turn Signal, Stoplamps and
Back-Up Lamps
1. Open the trunk.
2. Remove the two screws that attach the taillamp
assembly to the vehicle.
3. Pull the assembly sideways out from the panel so
that the locating pegs on the side of the lamp
assembly snap free from the clips.
5-49

4. While holding the assembly, turn the appropriate
bulb holder counterclockwise to release it from the
housing.
5. Remove the bulb from the holder by pushing it in
and turning it counterclockwise. The turn signal
bulb must have amber colored glass.
6. Install the new bulb into the bulb holder by pushing
it into the holder and turning it clockwise.
7. Insert the new bulb into the bulb holder and install
the bulb holder into the lamp housing, ensuring that
the holder locks securely into place.
8. Ensure that the lamp assembly clips are seated
correctly. Fit the housing to the body, ensuring
that the locating pegs snap into the clips and install
and tighten the attaching nuts to the correct
torque.
9. Check the light operation.Replacement Bulbs
Exterior Lamp Bulb Number
Back-up Lamp 1156
Front Sidemarker Lamp 168
Front Turn Signal and
Parking Lamp1157NA
Headlamps
High-Beam
Low-BeamH9
H11
Rear Turn Signal 1156NA
Stop/Taillamp 1157
For any bulb not listed here contact your dealer.
Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected at least
twice a year for wear or cracking. SeeOwner Checks
and Services on page 6-9for more information.
To replace the wiper blade assembly:
1. Lift the wiper up from the windshield and set into
the vertically-locked position.
2. Press the tab that holds the wiper blade to the arm.
3. Slide the blade down and off the arm.
4. Slide in the new blade and snap into place.
5-50

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 5-71for more
information.
5-68

Instrument Panel Fuse Block
This fuse block is located under the driver’s side of the
instrument panel. The fuses here protect each
separate circuit including headlamps. There are spare
fuses inside the fuse box. If you have electrical
failure, check here first.
Fuses Usage
FLASHER
UNITHazard Warning Flashers
POWER
WINDOWSPower Window Switches
POWER
SEATSPower Seat Controls
SPARE Spare
INSTRUMENT
ILLUM. PARK
LAMPSInstrument Cluster Brightness
Controls, Parking Lamps
STOP LAMPS Stop Lamps
INTERIOR
ILLUM.Interior light Controls
HAZARD
WARNINGHazard Warning Flashers
SPARE Spare
HORN Horn
IGNITION Ignition Switch
INSTRUMENT
ILLUM.Instrument Panel Lighting
TURN SIGNAL Turn Signal Lamp
5-88

Engine Compartment Fuse Block
The engine compartment fuse block is located in the
engine compartment and protects all electrical
loads. SeeEngine Compartment Overview on page 5-12
for more information on location.
For access to the main fuses, pull off the cover.
Fuses Usage
INJ/IGN Fuel Injectors and Ignition Modules
INJ/IGN Fuel Injectors and Ignition Modules
ENG
SENSORSEngine Sensors
AUTO TRANS Automatic Transmission
LH HEADLAMP Left Headlamp
RH
HEADLAMPRight Headlamp
ENG. CONT.
BCMEngine and BCM
FUEL PUMP Fuel Pump
SPARE Spare
RAD FAN 1 F/L Engine Cooling Small Fan
BLOWER F/L Blower Fan
MAIN F/L Main
ENGINE F/L Engine
ABS F/L Anti Lock Brakes
LIGHTING F/L Lighting
RAD FAN 2 F/L Engine Cooling Large Fan
REAR
WINDOWHeated Rear Window
SPARE Spare
SPARE Spare
T-RELAX Throttle Relaxer Module
5-90

Relays Usage
FUEL PUMP
RELAYFuel Pump
FOG LAMP
CANCEL
RELAYFog Lamp Cancel
FOG LAMP
RELAYFog Lamp
CRUISE
CANCEL
RELAYCruise Control Cancel
HIGH BEAM
RELAYHigh-Beam Headlamp
DAYTIME
RUNNING
LAMP RELAYDaytime Running Lamps
LOW BEAM
RELAYLow-Beam HeadlampRelays Usage
A/C RELAY Air Conditioning
HORN RELAY Horn
RAD FAN LOW
SPEED RELAYEngine Cooling Fan 1
RAD FAN
HIGH SPEED
RELAYEngine Cooling Fan 2
ENGINE
CONT. RELAYEngine Controls
HEATED REAR
WINDOW
RELAYRear Window Defogger
BLOWER
RELAYBlower
START RELAY Start
5-91

AUTO LOCK IN DRIVE
(Automatic Transmission Only).......................2-37
Automatic Headlamp System............................3-13
Automatic Transmission...................................2-17
Fluid..........................................................5-19
Operation...................................................2-18
AVG FUEL.....................................................3-36
AVG SPEED..................................................3-36
B
Backglass Antenna..........................................3-55
Battery....................................................2-6, 5-41
Battery Run-Down Protection............................3-16
Before Leaving on a Long Trip.........................4-21
Brake
Parking......................................................2-23
System Warning Light..................................3-27
Brake Fluid....................................................5-38
Brake Wear...................................................5-40
Brakes..........................................................5-38
Braking........................................................... 4-5
Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-15Bulb Replacement...........................................5-47
Front Turn Signal and Parking Lamps.............5-49
Halogen Bulbs............................................5-47
Headlamps.................................................5-47
Rear Turn Signal, Stoplamps and Back-Up
Lamps....................................................5-49
Replacement Bulbs......................................5-50
Buying New Tires...........................................5-65
C
California Fuel.................................................. 5-6
Canada – Customer Assistance.......................... 7-4
Capacities and Specifications............................5-92
Carbon Monoxide.....................4-24, 4-35, 2-8, 2-27
Care of
Safety Belts................................................5-81
Your CD Player...........................................3-54
Your CDs ...................................................3-54
CD Messages................................................3-49
Center Console Storage Area...........................2-31
Chains, Tires..................................................5-69
Charging System Light....................................3-27
2

Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Filling a Portable Fuel Container..................... 5-9
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-35
Gasoline Octane........................................... 5-5
Gasoline Specifications.................................. 5-5
FUEL REMAINING..........................................3-37
FUEL USED..................................................3-37
Fuses
Fuses and Circuit Breakers...........................5-87
G
Gage
Engine Coolant Temperature.........................3-28
Fuel..........................................................3-35
Speedometer..............................................3-25
Tachometer.................................................3-25
Gasoline
Octane........................................................ 5-5
Specifications............................................... 5-5
Glove Box.....................................................2-30
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
H
Hazard Warning Flashers................................... 3-4
Head Restraints............................................... 1-4
Headlamp High/Low-Beam Changer.................... 3-6
Headlamps....................................................5-47
Bulb Replacement.......................................5-47
Front Turn Signal and Parking Lamps.............5-49
Halogen Bulbs............................................5-47
Headlamps and Dimming Instructions.................3-14
Headlamps On When Approaching the
Vehicle.......................................................3-14
HEADLIGHTS APPROACH TIME......................2-36
HEADLIGHTS OFF DELAY TIME......................2-36
High Speed Operation.....................................5-61
Highbeam On Light.........................................3-33
Highway Hypnosis...........................................4-22
Hill and Mountain Roads..................................4-22
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn............................................................... 3-4
How to Add Coolant to the Coolant
Surge Tank.................................................5-33
How to Add Fluid....................................5-22, 5-23
How to Check................................5-20, 5-23, 5-60
How to Check and Add Fluid............................5-24
6