See also:

Using the Delete All Name Tags Command
The delete all name tags command deletes all stored phone book name tags and route name tags for OnStar (if present). To use the delete all name tags command: 1. Press and hold for two seconds. ...

OnStar®
If the vehicle has OnStar and you subscribe to the OnStar services, please refer to the OnStar Terms and Conditions for information on data collection and use. ...

Rear Window Defogger
The rear window defogger uses a warming grid to remove fog from the rear window. (Rear Window Defogger): Press to turn the rear window defogger on or off. An indicator light below the button ...