2012 Buick LaCrosse Owner's Manual - Page 354

10-28 Vehicle Care 3. With the latch open, pull the wiper blade down toward the windshield far enough to release it from the J-hooked end of the wiper arm. 4. Remove the wiper blade. Allowing the wiper blade arm to touch the windshield when no wiper blade is installed could damage the windshield. Any damage that occurs would not be covered by the vehicle warranty. Do not allow the wiper blade to touch the windshield. 5. Reverse Steps 1 through 3 for wiper blade replacement. To replace the windshield wiper blade: 1. Pull the windshield wiper assembly away from the windshield. 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 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. The vehicle should not have any snow, ice, or mud on it. 2. Lift up on the latch in the middle of the wiper blade where the wiper arm attaches. . . .