Using the “Delete All Name Tags” Command
This command deletes all stored name tags in the Hands-Free Calling Directory and the OnStar Turn-by-Turn Destinations Directory, if equipped.
To delete all name tags:
1. Press and hold 
for two seconds.
2. Say “Delete all name tags.”
See also:
Manual Foldaway
Manually fold the mirrors inward to prevent damage when going through an automatic car wash. To fold, pull the mirror toward the vehicle. Push the mirror outward, to return to its original position. ...
Sun Visors
Pull the sun visor down or unhook it and move it to the side to reduce glare.
Visor Vanity Mirror
Lift the cover to use the mirror and turn the lamps on. ...
Clearing the System
Unless information is deleted out of the in-vehicle Bluetooth system, it will
be retained indefinitely. This includes all saved name tags in the phone book and
phone pairing information. For infor ...