GM Service Manual Online
For 1990-2009 cars only

Hold the inside rearview mirror in the center to move it for a clearer view of behind your vehicle. Adjust the mirror to reduce the glare of headlamps from behind you. Push the tab forward for daytime use and pull it for nighttime use.

Vehicles with OnStar® have three additional control buttons located at the bottom of the mirror. See your dealer/retailer for more information on the system and how to subscribe to OnStar. See OnStar® System for more information about the services OnStar provides.