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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1513 (Lighting Systems) >> Repair Instructions >> Headlamp Aiming (Export, LH Rule of the Road)

Headlamp Aiming (Export, LH Rule of the Road)

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. Prepare the aiming screen and the vehicle for headlamp aiming. Refer to Headlamp Aiming (Visual Method)  or Headlamp Aiming (Export, LH Rule of the Road)  or Headlamp Aiming (Export, RH Rule of the Road) .
  2. Raise the hood.
  3. Raise the headlamps.
  4. Remove the headlamp adjustment screw plug from the headlamp bezel.

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

  5. Fig 2: LH Headlamp Aiming
    GM203472Courtesy of GENERAL MOTORS CORP.
  6. Turn ON the low beam lamps.
  7. Inspect the horizontal aim.
  8. Adjust the aim using the horizontal adjusting screw, to align the break point (3) of the high intensity zone to the headlamp vertical centerline (1), within the range of 38 mm (1.5 in) to the left (4) of the lamp vertical centerline (1), to 38 mm (1.5 in) to the right (5) of the lamp vertical centerline (1) on the aiming screen.
  9. Inspect the vertical aim.
  10. Adjust the aim using the vertical adjusting screw, to align the upper edge of the beam horizontal cut off line 114 mm (4.5 in) below (7) the headlamp horizontal centerline (2), within the range of 76 mm (3 in) below (8) the lamp horizontal centerline (2), to 191 mm (7.5 in) below (6) the lamp horizontal centerline (2) on the aiming screen.
  11. Fig 3: Headlamp To Headlamp Bezel
    GM64616Courtesy of GENERAL MOTORS CORP.
  12. Install the headlamp adjustment screw plug.

    Push to secure.

  13. Turn OFF the headlamps.
  14. Lower the hood.