How to Adjust Headlights on a Pontiac Grand Prix

by Carl Pruit

If you have ever been driving down the road at night and had trouble seeing the road because your headlights were pointed off to the side, you know how important it is to have them adjusted properly. It is a simple process, but it can also make a big difference in driving safety. Proper headlight adjustment enables you to see obstacles in the road and is important for driving in bad weather.

How to adjust headlights on a Pontiac Grand Prix

Step 1

Pull your Pontiac Grand Prix to within 25 feet of a flat wall, like a garage door. Park the vehicle on a flat, level surface.

Step 2

Measure from the ground up 4 feet on your flat wall and using the masking tape, place a horizontal line across the wall. The horizontal line should be a little wider than the width of your Pontiac Grand Prix.

Step 3

Locate the center of your vehicle bumper and transfer that position to the horizontal masking tape line on the wall. Using the masking tape, make a vertical line across the horizontal line in the position that represents the center of your vehicle's bumper.

Step 4

Measure from the center of your vehicle's bumper to the center point of each headlight. Transfer those measurements to the horizontal masking tape line in the same manner that you transferred the center point in Step 3.

Step 5

Open the hood of your Grand Prix. Locate the adjustment screws on each headlight. The vertical adjustment screw will be on the top of the headlight and the horizontal adjustment screw will be on the lower outside edge of the headlight.

Step 6

Turn the headlights on and set them so the low beams are showing. Using a screwdriver, adjust the screws until both headlights are centered on the horizontal and vertical center points you created with the masking tape. When they are centered, turn the vertical adjustment screw until both headlights are showing the top of the light, across the horizontal tape line.