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:
Lane Departure Warning (LDW)
For vehicles with LDW, it is intended to help avoid unintentional lane departures.
It may provide a warning if the vehicle is crossing a lane without using a turn
signal. LDW uses a camera sensor ...
Airbag Readiness Light
This light shows if there is an electrical problem. The system check includes
the airbag sensor(s), passenger sensing system, the pretensioners, the airbag modules,
the wiring, and the crash sensi ...
Tachometer
The tachometer displays the engine speed in revolutions per minute (rpm). ...