GMC 22863814 Lamp Assembly, Front Fog

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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 is needed. 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. 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.