Aiming Procedure

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Park the vehicle on a level surface 7.6 m (25 ft) away from a wall or other flat surface.
Measure the distance from the floor to the center of the fog lamp (5).
Using this measurement, mark the horizontal centerline of the fog lamp (1) on the flat surface directly in front of the vehicle.

Fig 1: Fog Lamp Aiming Measurements
Courtesy of GENERAL MOTORS CORP.
Turn ON the fog lamps.
Reach under the rear lower edge of the front fascia in order to access the fog lamp vertical adjustment screw on the rear of the fog lamp.

Fig 2: Locating Fog Lamp Vertical Adjustment Screw

Courtesy of GENERAL MOTORS CORP.

Adjust the fog lamp so that the top edge of the fog lamp beam pattern is 100 mm (4 in) below the horizontal centerline.
Turn OFF the fog lamps.