Verify Minutes and Expiration
Push 
and say “minutes” then “verify” to check how many minutes remain and their expiration date.
See also:
Steering Wheel Controls
If equipped, some audio controls can be adjusted at the steering wheel.
(Next) : Press to go to the next favorite radio station, track on a CD, or folder on an iPod® or USB device.
(Previous/En ...
Auxiliary Devices
For vehicles equipped with the MyLink or IntelliLink infotainment system, see
the separate MyLink/ IntelliLink Features and Functions Guide for more information.
This vehicle has an auxiliary input ...
Retrieve My Number
1. Push . System responds:
“OnStar ready.” 2. Say “My Number.” System responds: “Your OnStar Hands-Free Calling number is.” ...