The vehicle may have an automatic dimming inside rearview mirror. Automatic dimming reduces the glare of lights from behind the vehicle.

The mirror may also have OnStar® and/or a compass and outside temperature display.

Control buttons for the OnStar® system are at the bottom of the mirror. See OnStar® System for more information about the services OnStar® provides. See Compass for more information about the compass display. See "Temperature Display" after, for more information about the outside temperature display.

AUTO/ / (On/Off): Press and hold AUTO / for about three seconds or depending on the mirror, press to turn automatic dimming on or off. The automatic dimming feature comes on and the indicator light illuminates each time the vehicle is started.

Temperature Display

/ (On/Off) : Press or depending on the mirror, press to turn the display on or off.

To adjust between Fahrenheit and Celsius:

1. Press and hold / for a few seconds. The current unit of measure (F or C) flashes.
2. Press / again and release to change the unit of measure. Wait several seconds and the compass/temperature display returns with the selected unit of measure.

It is normal under certain conditions for the temperature update to be delayed. If an incorrect temperature displays for an extended period, see your dealer/retailer.

Cleaning the Mirror

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