2006 Pontiac Grand Prix Owner's Manual - Page 357

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: 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: • 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. 1. Find the aim dot on the lens of the low-beam lamp. 2. Measure the distance from the ground to the aim dot on the lamp. Record the distance. 3. At the wall or other flat surface, measure from the ground upward the recorded distance from Step 2 and draw or tape a horizontal line the width of the vehicle. • 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 inflated. 5-51