2005 PONTIAC GRAND PRIX headlamp

4. Turn on the low-beam headlamps and place a
piece of cardboard or equivalent in front of the
headlamp not being aimed. This should allow only
the beam of light from the headlamp being
aimed to be seen on the at surface.
Notice:Do not cover a headlamp to improve beam
cut-off when aiming. Covering a headlamp may
cause excessive heat build-up which may cause
damage to the headlamp.
5. Turn the vertical aiming screw until the headlamp
beam is aimed to the horizontal tape line. The top
edge of the cut-off should be positioned at the
bottom edge of the horizontal tape line.
6. Repeat Steps 4 and 5 for the opposite headlamp.Bulb Replacement
For the proper type of replacement bulbs, see
Replacement Bulbs on page 5-56.
For any bulb changing procedure 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.
5-50

Headlamps and Sidemarker Lamps
1. Open the hood. SeeHood Release on page 5-10for
more information.
A. High-Beam Headlamp
B. Low-Beam Headlamp
C. Sidemarker Lamp2. Pull up half-way on the plastic retaining clip while
pushing rearward on the headlamp.
Align the square cut-out on the retaining clip with
the notch on the headlamp.
5-51

3. Pull the headlamp assembly straight out from the
vehicle. (Moving the headlamp up and down
slightly may help with its removal.)4. Turn the bulb socket ring one-quarter of a turn
counterclockwise to remove it from the headlamp
assembly.
5. Pull the old bulb from the socket.
6. Place the new bulb into the socket.
7. Turn the bulb socket ring one-quarter turn clockwise
to reinstall it back into the headlamp assembly.
8. Carefully reinstall the headlamp assembly.
9. Push down on the plastic retaining clip on the
electrical connector while pushing rearward on
the headlamp, making sure the headlamp assembly
is secure.
5-52

Front Turn Signal, Parking and
Fog Lamps
The front turn signal, parking, and fog lamps are
located below the high-beam, low-beam headlamps
and sidemarker lamps.
A. Front Turn Signal,
Parking Lamp
B. Fog Lamp
1. Follow Steps 1 through 3 of the headlamp
replacement procedure. SeeHeadlamps and
Sidemarker Lamps on page 5-51for more
information.2. Locate the front turn
signal, parking lamp,
and fog lamp bulbs,
which are located
below the headlamp
assembly.
The arrow indicates which
is the turn signal/parking
lamp bulb. The fog
lamp bulb is below it.
3. Turn the bulb socket one-quarter of a turn
counterclockwise to remove it from its assembly.
4. Pull the old bulb from the socket and replace it with
a new one.
5. Turn the bulb socket a quarter turn clockwise to
reinstall it.
6. Reinstall the headlamp assembly. Be careful to
avoid scratching or chipping the paint on the
vehicle.
7. Push down on the plastic retaining clip on the
electrical connector while pushing rearward on
the headlamp, making sure the headlamp assembly
is secure.
5-53

2. Turn the appropriate lamp socket a quarter turn
counterclockwise and remove it.
3. Remove the old bulb.
4. Put the new bulb into the lamp socket.
5. Turn the bulb a quarter turn clockwise to reinstall it.
Replacement Bulbs
Exterior Lamps Bulb Number
Back-Up Lamp 3157
Front Parking/Turn Signal Lamp 3757 KA
Front Sidemarker 194
Headlamps
High-Beam Halogen 9005
Low-Beam Halogen 9006
Stop/Taillamp/Turn Signal Lamps 3057
For replacement bulbs not listed here, contact
your dealer.
5-56

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 5-82for more
information.
5-71

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 airbag system. Before attempting
to add anything electrical to your vehicle, seeServicing
Your Airbag-Equipped Vehicle on page 1-56.
Headlamp Wiring
The headlamp circuit is protected by individual fuses in
the underhood fuse block. An electrical overload will
cause the fuse to blow. If this happens, have the
headlamp system checked right away.
Windshield Wiper Fuses
The windshield wiper motor is protected by a 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,
have it xed.
Power Windows and Other Power
Options
Circuit breakers in the fuse panel 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 xed.
Fuses and Circuit Breakers
The wiring circuits in the vehicle are protected from short
circuits by a combination of fuses, circuit breakers and
fusible thermal links in the wiring itself. This greatly
reduces the chance of res caused by electrical
problems.
Look at the silver-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure to
replace a bad fuse with a new one of the identical
size and rating. Spare fuses and a fuse puller are
located in the underhood fuse block. SeeUnderhood
Fuse Blocklater in this section.
5-103

Fuses Usage
1 Left Front High-Beam Headlamp
2 Right Front High-Beam Headlamp
3 Left Front Low-Beam Headlamp
4 Right Front Low-Beam Headlamp
5 Windshield Wipers/Washer
6 Washer/Remote Vehicle Current
Fuses Usage
7 Fog Lamps
9 SIR
10 Auxiliary Power
11 Horn
12 Emission
13 A/C Clutch
14 Oxygen Sensor
15 Power Control Module
16Power Control Module/Electronic
Throttle Control
17 Electronic Throttle Control
18 Display
19 Anti-Lock Brake Solenoid
20 Fuel Injection
21 Transmission Solenoid
22 Fuel Pump
23 Anti-Lock Brakes
5-106