See also:

Automatic Dimming Rearview Mirror
The vehicle may have an automatic dimming inside rearview mirror with OnStar® and/or a compass display. Automatic dimming reduces the glare from the headlamps of the vehicle behind you. The dim ...

Vehicle Care/Appearance Materials
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Battery Voltage
This display, available on some vehicles, shows the current battery voltage. If the voltage is in the normal range, the value will display. For example, the display may read Battery Voltage 1 ...