The vehicle may have an automatic dimming inside rearview mirror with OnStar® controls. For more information about OnStar®, see OnStar® System .

Automatic dimming reduces the glare of lights from behind the vehicle and is activated each time the vehicle is started. The indicator light on the mirror illuminates when this feature is on.

When cleaning the mirror, use a paper towel or similar material dampened with glass cleaner. Do not spray glass cleaner directly on the mirror as that may cause the liquid cleaner to enter the mirror housing.