Verify Minutes and Expiration
Push 
and say “minutes” then “verify” to check how many minutes remain and their expiration date.
See also:
Power Reclining Seatbacks
To recline a power seatback, if equipped:
• Tilt the top of the control rearward to recline.
• Tilt the top of the control forward to raise. ...
The Inside
Here's where GM has really outdone itself in its new SUVs. Like the Tahoe,
the Yukon shows off one of the best interiors GM has ever mustered in a
mass-marketed vehicle. All the buttons are of abo ...
Connections
OnStar Hands-Free Calling allows calls to be made and received from the vehicle. The vehicle can also be controlled from a cell phone through the OnStar mobile app. See www.onstar.com for coverage map ...