Your vehicle may have an automatic-dimming rearview mirror with a compass and temperature display and the OnStar® system.
The mirror also has an eight-point compass and temperature display in the upper right corner on the mirror face and a three-button OnStar® system.
When the automatic dimming feature is turned on, the mirror automatically changes to reduce glare from headlamps behind you. A photocell on the mirror senses when it is becoming dark outside. Another photocell built into the mirror face senses when headlamps are behind you.
At night, when the glare is too bright, the mirror will gradually darken to reduce glare. This change may take a few seconds. The mirror will return to its clear, daytime state when the glare is reduced.
Mirror Operation
(On/Off): The button with this symbol is the on/off button for the mirror functions such as automatic dimming and temperature display. It is the far left button located on the lower part of the mirror face.A light on the mirror will be lit while the feature is turned on.
Temperature Display
Press the on/off button to change the temperature display. You can select °F, °C, or turn the display off.
Compass Operation
There is a compass display in the window in the upper right corner of the mirror face. The compass displays a maximum of two characters. For example, NE is displayed for north-east.
The compass may need to be calibrated. See "Compass Calibration" under Automatic Dimming Rearview Mirror with Compass and Temperature Display for more information.
The other three buttons are for the OnStar® system. 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.
