GM Service Manual Online
For 1990-2009 cars only
  1. Prepare the vehicle. Refer to Aim Preparation.
  2. Turn the vertical adjustment screw until the pattern aligns on the screen.

  3. Object Number: 276650  Size: SH
  4. Ensure that you obtain the following conditions when you project the lamps on a screen 7.6 m (25 ft) away:
  5. • The top edge (4) of the high intensity zone will be 100 mm (4 in) below the horizontal centerline (2) of the lamps
    • The center of the high intensity zone will be on the vertical centerline (1) of the lamps