Automatic Dimming Rearview Mirror

On vehicles with an automatic dimming inside rearview mirror the automatic dimming reduces the glare from the headlamps of the vehicle behind you.

Vehicles with OnStar have three control buttons located at the bottom of the mirror. See your dealer for more information about OnStar and how to subscribe to it.

See OnStar Overview.

Cleaning the Mirror

Do not spray glass cleaner directly on the mirror. Use a soft towel dampened with water.

    See also:

    Outside Heated Mirrors
    When the rear window defogger is turned on, the driver’s and passenger’s outside rearview mirrors also heat to help clear them of ice, snow, and condensation. ...

    Reporting Safety Defects to theCanadian Government
    If you live in Canada, and you believe that your vehicle has a safety defect, you should immediately notify Transport Canada, in addition to notifying General Motors of Canada Limited. You may c ...

    English and Metric Unit Conversion
    To change the display units between English and metric units, see Driver Information Center (DIC) for more information. ...