2003 Hummer H2FACTORY OEM SERVICE PROCEDURE

Headlamp Aiming (Visual Method): Notes

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 Assemblies & Headlamp Bezel
GM64688Courtesy of GENERAL MOTORS CORP.

Horizontal and vertical aiming of each of the composite headlamps is done by turning adjusting screws which move the headlamp capsule in relation to the headlamp frame. The horizontal adjustment screw (1) is located on the inboard side of each of the headlamp assemblies, covered by a plug (2) on the headlamp bezel. The vertical adjustment screw (3) is located on the inboard side of each of the headlamp assemblies, below the lower edge of the headlamp bezel.

Some state and local authorities have specific requirements for aiming the headlamps. These requirements must be followed.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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