Pontiac 2005 Grand Prix - Manual (Page 338)

Headlamp Aiming
The vehicle has a visual optical headlamp aiming
system. The aim 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 flash 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 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 or other flat
surface.
• The vehicle must have all four tires on a perfectly
level surface which is level all the way to the wall
or other flat surface.
• The vehicle should be placed so it is perpendicular
to the wall or other flat surface.
• The vehicle should not have any snow, ice or
mud on it.
• 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)
on the driver’s seat.
• Tires should be properly inflated.
Headlamp aiming is done with the vehicle’s low-beam
lamps. The high-beam lamps will be correctly aimed
if the low-beam lamps are aimed properly.
The vertical headlamp aiming screws are under the
hood near the headlamps.
Adjustment screws can be turned with an E8 Torx ®
socket or T15 Torx ® screwdriver.
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