2012 Buick LaCrosse Owner Manual - Page 368

10-30 Vehicle Care . Headlamp Aiming The headlamp aiming system has been preset at the factory. If the vehicle is damaged in an accident, the aim of the headlamps may be affected and adjustment may be necessary. It is recommended that a dealer adjust the headlamps. To re-aim the headlamps yourself, use the following procedure. The vehicle should be properly prepared as follows: . The vehicle should not have any snow, ice, or mud on it. 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. . . . The vehicle should be placed so the headlamps are 7.6 m (25 ft) from a light‐colored wall. The vehicle must have all four tires on a level surface which is level all the way to the wall. The vehicle should be placed so it is perpendicular to the wall or other flat surface. 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 . .