Your vehicle may have an automatic dimming rearview mirror with the OnStar® System.
The automatic dimming feature is turned on or off by pressing the far left button, located on the lower part of the mirror, for up to three seconds. When turned on, this mirror functions exactly like the automatic dimming rearview mirror described previously. See Automatic Dimming Rearview Mirror .
There are two lamps located on the bottom of the mirror. Each lamp is turned on and off by pressing the button next to the lamp.
There are also three OnStar® buttons located at the bottom of the mirror. 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.