GM Service Manual Online
For 1990-2009 cars only

The front fog lamps must be aimed for proper illumination of the road. The front fog lamp aim should be checked at least once a year, when a new bulb is installed, when a new fog lamp assembly is installed, or if service or repairs in the front end area may have disturbed the fog lamp mounting.

There is no horizontal adjustment for aiming the front fog lamp assemblies on this vehicle.

  1. To ensure accurate vertical front fog lamp aiming, first perform the following steps to prepare the vehicle.
  2. • Verify that all the components are in place on the vehicle, if other service has been performed on the vehicle.
    • Verify that the fuel level is full.
    • Place the vehicle on a level surface 7.6 m (25 ft) away from a target screen.
    • Stop all other operations of work on the vehicle.
    • Jounce the vehicle to settle the suspension.

       Important: DO NOT cover the headlamps, this may cause excessive heat buildup.

    • Block the light from the headlamps from projecting onto the aiming screen while aiming the fog lamps.

    Object Number: 64604  Size: SH
  3. Turn the front fog lamps ON.

  4. Object Number: 1757462  Size: SH
  5. Insert a TORX® driver under the front fascia extension in order to reach the fog lamp vertical adjustment screw from the bottom side of the vehicle.
  6. Adjust the fog lamp up or down until the top edge of the high intensity zone on the screen is 102 mm (4 in) below the horizontal centerline (2).
  7. Turn OFF the front fog lamps.