2008 PONTIAC GRAND PRIX Owners Manual

Headlamp Aiming
The visual optical headlamp aiming system has been
preset at the factory and should need no further
adjustment.
However, If the vehicle is damaged in an accident, the
headlamp aim may be affected and adjustment may
be necessary.
If oncoming vehicles ash their high beams at you, this
may also mean the vertical aim needs to be adjusted.
It is recommended that the vehicle is taken to your
dealer/retailer for service if the headlamps need to be
re-aimed. It is possible however, to re-aim the
headlamps as described in the following procedure.The vehicle should be properly prepared as follows:The vehicle should be placed so the headlamps are
25 ft. (7.6 m) from a light colored wall.
The vehicle must have all four tires on a perfectly
level surface which is level all the way to the wall.
The vehicle should be placed so it is perpendicular
to the wall.
The vehicle should not have any snow, ice, or
mudonit.
The vehicle should be fully assembled and all other
work stopped while headlamp aiming is being done.
The vehicle should be normally loaded with a
full tank of fuel and one person or 160 lbs (75 kg)
sitting on the driver’s seat.
Tires should be properly inated.
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Headlamp aiming is done with the low-beam headlamps.
The high-beam headlamps will be correctly aimed if the
low-beam headlamps are aimed properly.
To adjust the vertical aim, do the following:
1. Open the hood. SeeHood Release on page 5-11
for more information.
Find the aim dot on the lens of the low-beam lamp.
2. Locate the aim dot on the lens of the low-beam
headlamp.
3. Measure the distance from the ground to the aim
dot on the lamp. Record the distance.4. At the wall measure from the ground upward (A) to
the recorded distance from Step 3 and mark it.
5. Draw or tape a horizontal line (B) on the wall the
width of the vehicle at the height of the mark
in Step 4.
6. 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.
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7. Locate the vertical headlamp aiming screws, which
are under the hood, near the headlamps. Turn the
vertical aiming screw until the headlamp beam is
aimed to the horizontal tape line.
The adjustment screws can be turned witha6mm
hex key bit socket ora6mmhexkey.8. Turn the vertical aiming screw until the headlamp
beam is aimed to the horizontal tape line. Turn it
clockwise or counterclockwise to raise or lower the
angle of the beam.
9. Make sure that the light from the headlamp is
positioned at the bottom edge of the horizontal tape
line. The lamp on the left (A) shows the correct
headlamp aim. The lamp on the right (B) shows the
incorrect headlamp aim.
10. Repeat Steps 7 through 9 for the opposite
headlamp. Driver’s Side shown
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Bulb Replacement
For the proper type of replacement bulbs, see
Replacement Bulbs on page 5-60.
For any bulb changing procedure not listed in this
section, contact your dealer/retailer.
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 and Sidemarker Lamps
To replace a headlamp or sidemarker bulb:
A. High-Beam Headlamp
B. Low-Beam Headlamp
C. Sidemarker Lamp
1. Open the hood. SeeHood Release on page 5-11
for more information.
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2. Locate the metal retaining clip. Remove the bolt.
3. Pull up half-way on the metal retaining clip
while pushing rearward on the headlamp.
Align the square cut-out on the retaining clip with
the notch on the headlamp.4. Pull the headlamp assembly straight out from the
vehicle. Moving the headlamp up and down slightly
may help with its removal.
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A. High-Beam Headlamp
B. Low-Beam Headlamp
C. Sidemarker Lamp
5. Turn the bulb socket ring one-quarter of a turn
counterclockwise to remove it from the headlamp
assembly.6. Pull the old bulb from the socket.
7. Place the new bulb into the socket.
8. Turn the bulb socket ring one-quarter turn clockwise
to reinstall it back into the headlamp assembly.
9. Carefully reinstall the headlamp assembly.
10. Push down on the metal retaining clip while pushing
rearward on the headlamp, making sure the
headlamp assembly is secure.
11. Reinstall the bolt and tighten to secure.
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Front Turn Signal, Parking and Fog
Lamps
The front turn signal, parking, and fog lamps, if the
vehicle has them, are located below the headlamp
assembly.
A. Front Turn Signal/Parking Lamp
B. Fog Lamp (If Equipped)
To replace one of these bulbs, do the following:
1. Follow Steps 1 through 4 of the headlamp
replacement procedure. SeeHeadlamps and
Sidemarker Lamps on page 5-54for more
information.2. Locate the front turn
signal/parking lamp (all
models) and fog lamp
bulbs (if equipped),
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, if your
vehicle has this bulb. If you need to have fog lamp
bulb replaced, see your dealer/retailer for service.
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.
7. Push down on the metal retaining clip while pushing
rearward on the headlamp, making sure the
headlamp assembly is secure.
8. Reinstall the bolt and tighten to secure.
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Taillamps, Turn Signal, and
Stoplamps
A. Taillamp
B. Taillamps, Turn Signal
and Stoplamps
1. Open the trunk. SeeTrunk on page 2-14for more
information.
2. Remove the convenience net, if equipped, by
removing the net hook attachments.
3. Remove the plastic cap from the trunk trim.
4. Pull the trunk trim and carpet away from the back of
the trunk.
5. Remove the bottom bolt and two nuts.6. Remove the taillamp
assembly by pulling it
out from the vehicle.
7. Turn the appropriate
lamp socket a quarter
turn counterclockwise
and remove it.
8. Remove the old bulb.
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