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Home >> Pontiac >> 2004 >> Aztek Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 331 (Lighting Systems) >> Repair Instructions >> Headlamp Aiming (Visual Method) >> Adjustment Procedure
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Adjustment Procedure

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Headlamp To Headlamp Bezel
    GM64616Courtesy of GENERAL MOTORS CORP.
  1. Raise the hood.
  2. Raise the headlamps.
  3. Remove the headlamp adjustment screw plug from the headlamp bezel.

    Reach under the headlamp bezel and push out the plug from behind.

    4. Fig 2: Low Beam Headlamps At Passenger Side Headlamp
    GM64619Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: DO NOT cover the headlamp, this may cause excessive heat build up.
  4. Turn on the low beam headlamps and block the light from projecting onto the screen from the passenger side headlamp.
  5. Inspect the horizontal aim.
  6. Adjust the aim using the horizontal adjusting screw, to align the left edge of the high intensity zone with the headlamp vertical centerline (1), within the range of 102 mm (4 in) to the left (4) of the lamp vertical centerline (1), to 102 mm (4 in) to the right (3) of the lamp vertical centerline (1) on the aiming screen.
  7. Inspect the vertical aim.
  8. Adjust the aim using the vertical adjusting screw, to align the top edge of the high intensity zone to the headlamp horizontal centerline (2), within the range of 51 mm (2 in) above (6) the lamp horizontal centerline (2), to 64 mm (2.5 in) below (5) the lamp horizontal centerline (2) on the aiming screen.
    9. Fig 3: Headlamp To Headlamp Bezel
    GM64616Courtesy of GENERAL MOTORS CORP.
  9. Install the headlamp adjustment screw plug.

    Push to secure.

  10. Repeat the aiming procedure for the passenger side headlamp while blocking the light from projecting onto the screen from the driver side headlamp.
  11. Turn OFF the headlamps.
  12. Close the hood.
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