OnStar Services

See also:

Rear Window Defogger
The rear window defogger uses a warming grid to remove fog or frost from the rear window. It only works when the ignition is in ON/RUN. (Rear Window Defogger): Press to turn the rear window ...

Playing a DVD
DVD video does not display on the navigation screen unless the vehicle is in P (Park). It will operate on the rear seat entertainment screens while the vehicle is moving. The Rear Seat Entertainme ...

Buying New Tires
GM has developed and matched specific tires for the vehicle. The original equipment tires installed were designed to meet General Motors Tire Performance Criteria Specification (TPC Spec) system rat ...