GM 15114778 Headlamp Capsule Assembly (Includes Mounting Bracket)

You can Select Your Vehicle to check if 15114778 fits your vehicle.

These instructions provide guidance on adjusting the headlights and fog lights on certain models of vehicles. The headlights have a screw for adjusting the up-and-down movement, while the left-and-right movement is not adjustable. To adjust the headlights, a blank wall 25 feet in front of the vehicle and a level floor are needed. Masking tape should be positioned on the wall in reference to the vehicle centerline and the centerlines of both headlights. The height of the headlight reference marks should be measured and a horizontal tape line should be placed on the wall at the same height. The headlights should be adjusted with the vehicle sitting level, the gas tank half-full, and a 160-lb person or equivalent in the driver's seat. The adjusting screw should be turned to position the high-intensity zone two inches below the horizontal line. It is recommended to have the headlights adjusted by a dealer service department. Some models also have optional fog lights that can be aimed like headlights. The fog lights can be adjusted using torx-type adjusting screws. Tape should be positioned on a wall 25 feet in front of the vehicle, with a horizontal line representing the height of the fog lamp centers and another line four inches below that. The adjusting screws on the fog lamps can be used to adjust the pattern on the wall so that the top of the fog lamp beam meets the lower line. The specific location of the adjustment bolt or screw may vary depending on the model of the vehicle.

Start by opening the hood and removing the grille.

Align the housing locating pins with the panel holes and push down the retaining tabs to lock the housing in place.

The height of the headlight reference marks should be measured and a horizontal tape line should be placed on the wall at the same height.