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:
Bluetooth®
The Bluetooth system allows users with a Bluetooth-enabled cell phone to make
and receive hands-free calls using the vehicle audio system and controls.
The Bluetooth-enabled cell phone must be pair ...
Interior Mirror
Vehicles with a manual rearview mirror can be adjusted to see clearly behind the vehicle. Hold the mirror in the center to move it up or down and side to side. To reduce headlamp glare during nighttim ...
Spacious, refined and versatile interior
The Acadia's interior features a "low and away" instrument panel that
enhances the feeling of openness in the front-row seats and provides a
commanding outward view. All interior element ...