2012 Buick LaCrosse Owner's Manual - Page 355

Vehicle Care . 10-29 The vehicle should be fully assembled and all other work stopped while headlamp aiming is being performed. The vehicle should be normally loaded with a full tank of fuel and one person or 75 kg (160 lbs) sitting in the driver seat. Tires should be properly inflated. To adjust the vertical aim: 1. Open the hood. See Hood on page 10‑5. . . Headlamp aiming is done with the vehicle's low-beam headlamps. The high-beam headlamps will be correctly aimed if the low-beam headlamps are aimed properly. Base Uplevel 2. Locate the aim dot on the lens of the low‐beam headlamp. 3. Measure the distance from the ground to the aim dot on the low‐beam headlamp. Record the distance.