Your vehicle has this feature located at the bottom of the mirror, to change the mirror from the day to the night position. To reduce the glare of headlamps from behind, turn the control counterclockwise. To return the mirror to the day position, turn the control clockwise.

There are also three OnStar® buttons located at the bottom of the mirror face. See your dealer for more information on the system and how to subscribe to OnStar®. See OnStar® System for more information about the services OnStar® provides.