The vehicle may have an automatic dimming rearview mirror. It may also have OnStar® controls. See OnStar® System for more information.

At night, when glare from lights is high, the mirror will gradually darken. This change may take a few seconds. The mirror will return to its clear daytime state when glare is reduced.

Mirror Operation

AUTO: Press this button to turn on the automatic dimming feature.

OFF: Press this button to turn off the automatic dimming feature.

(On/Off): For mirrors equipped with OnStar® controls, press this button to turn the automatic dimming feature on or off.

The indicator light will be illuminated when this feature is on.