Headlamp Aiming Procedure
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Align the left tires of the vehicle with the reference line extending from the screen with the headlamps aligned with the reference line.
- Remove any snow, ice or mud from the vehicle.
- The vehicle should be fully assembled and all other work stopped while the headlamp aiming is being done.
- The vehicle should contain cargo or be loaded to represent normal vehicle use.
- Tires should be properly inflated.
- Rock the vehicle to stabilize the suspension.
- Measure from the floor to the center of the lamp bulb on the vehicle. Some lamps have an aim dot marked on the lens.
- At the screen, measure from the floor and place the horizontal tape at the measured distance.
- Measure from the reference line on the floor to the left headlamp bulb centerline.
- At the screen, measure from the reference line and place the vertical tape at the measured distance.
- Measure from the reference line on the floor to the right headlamp bulb centerline.
- At the screen, measure from the reference line and place the vertical tape at the measured distance.
- Turn the headlamps ON.
- Adjust the headlamps to the specifications required by state and local authorities.