2005 Buick LeSabre Owner's Manual - Page 286

Headlamp aiming is done with the vehicle low-beam lamps. The high-beam lamps will be correctly aimed if the low-beam lamps are aimed properly. Headlamp Horizontal Aiming To adjust the horizontal aim, do the following: 1. Open the hood. See Hood Release on page 5-11 for more information. 2. Locate the horizontal aiming screw (A). The headlamp aiming devices are located under the hood near the headlamps. If you believe your headlamps need horizontal (left/right) adjustment, follow the horizontal aiming procedure. If you believe your headlamps need only vertical (up/down) adjustment, follow only the vertical aiming procedure. Adjustment screws can be turned with an E8 Torx® socket or T15 Torx® screwdriver. 3. Turn the horizontal aiming screw (A) until the indicator (B) is lined up with zero. Once the horizontal aim is adjusted, then adjust the vertical aim. 5-46