Cadillac 2006 CTS-V - Manual (Page 321)

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 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
performed.
• 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 inflated.
• The spare tire is in its original location in the vehicle.
Headlamp aiming is done with the vehicle’s 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. See Hood Release on page 5-11
for more information.
2. Find the aim dot on the lens of the low-beam
headlamp.
3. Measure the distance from the ground to the
aim dot on the low-beam headlamp. Record
the distance.
4. At the wall or other flat surface, measure from the
ground upward the recorded distance from Step 2
and mark it.
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