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Headlamp Aiming Procedure

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
  1. Open the hood.
    2. Fig 1: Measuring Distance Between Headlamps Face & Aiming Screen
    GM418400Courtesy of GENERAL MOTORS CORP.
  2. Measure from the floor to the center of the headlamp bulb.
  3. At the screen, measure from the floor and place the horizontal tape at the measured distance.
  4. Measure from the reference line on the floor to the left headlamp bulb centerline.
  5. At the screen, measure from the reference line and place the vertical tape at the measured distance.
  6. Measure from the reference line on the floor to the right headlamp bulb centerline.
  7. At the screen, measure from the reference line and place the vertical tape at the measured distance.
    8. Fig 2: Right Side Low Beam Proper Screen Positioning
    GM476831Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Do not cover the headlamp. This may cause excessive heat build up. Use a piece of cardboard forward of the headlamp to block the light.
  8. Turn ON the low beam headlamps and block the light from projecting onto the screen from the passenger side headlamp.
    9. Fig 3: Identifying Headlamp Adjustment Components
    GM1501844Courtesy of GENERAL MOTORS CORP.
  9. Adjust the screw (4) for the vertical aim of the headlamps to the specifications required by the state and the local authorities.
  10. Rotate the headlamp adjuster to change the vertical aim of the headlamp.
  11. Repeat the aiming procedure for the passenger side headlamp while blocking the light from projecting onto the screen from the driver side headlamp.
  12. Turn the headlamps OFF.
  13. Close the hood.
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