Verify Minutes and Expiration
Push 
and say “minutes” then “verify” to check how many minutes remain and their expiration date.
See also:
OnStar Overview
If equipped, this vehicle has a comprehensive, in-vehicle system that can connect
to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic
Services.
The OnStar system s ...
DIC Operation and Displays
Use the DIC buttons located in the center of the instrument panel to access different
displays. The DIC displays trip, fuel, vehicle system information, and warning messages.
It also shows the shi ...
Electronic Transfer Case
The transfer case knob is located next to the steering column.
Use the dial to shift into and out of four-wheel drive. ...