GM Service Manual Online
For 1990-2009 cars only

Adjustment Prodecure

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 mountings.

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

  1. To ensure accurate front fog lamp aiming, first perform the following steps to prepare the vehicle.
  2. • Make sure that all the components are in place on the vehicle, if other service has been performed on the vehicle.
    • Make sure the fuel level is 1/2 full or less.
    • Place the vehicle on a level surface 1.52 m (5 ft) away from a target screen.
    • Stop all other operations of work on the vehicle.
    • Jounce the vehicle to settle the suspension.
    • Cover the headlamps while aiming the fog lamps.

    Object Number: 64604  Size: SH
  3. Turn the front fog lamps ON.
  4. Insert a TORX® driver through the front fascia deflector access hole to reach the fog lamp vertical adjustment screw.
  5. Adjust the fog lamp up or down until the top edge of the high intensity zone is 102 mm (4 in) below the horizontal centerline of the fog lamp (2), within the range of 0 mm (0 in) (3), on the horizontal centerline (2), to 203 mm (8 in) (5), below the horizontal centerline (2), on the target screen, 1.52 m (5 ft) away.
  6. Turn OFF the front fog lamps.