GM Service Manual Online
For 1990-2009 cars only

If the vehicle has this mirror, while sitting in a comfortable driving position, adjust the mirror so you can see clearly behind the vehicle. Grip the mirror in the center and move it up and down or side to side. The day/night control, located at the bottom of the mirror, allows adjustment to lessen glare from the lamps behind you. Push the lever for daytime use; pull it for night use.

There are three OnStar® buttons located at the bottom of the mirror face. For more information about OnStar® and the services it provides, see OnStar® System .