Headlamp Aiming Procedure
- 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.
Courtesy of GENERAL MOTORS CORP.
- 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 on the headlamps.
- Adjust the headlamps to the specifications required by state and local authorities.
- This illustration represents the visual optics left (VOL) pattern.
Courtesy of GENERAL MOTORS CORP.
- This illustration represents the visual optics right (VOR) pattern.
Courtesy of GENERAL MOTORS CORP.
- This illustration represents all headlamps, except the VOL and VOR.
Courtesy of GENERAL MOTORS CORP.
- This illustration represents the high beam pattern for all headlamps, including VOL and VOR.
Courtesy of GENERAL MOTORS CORP.