See also:

Vehicle and Power Issues
OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not o ...

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 ...

Security
OnStar provides services like Stolen Vehicle Assistance, Remote Ignition Block, and Roadside Assistance, if the vehicle is equipped with these services. OnStar can unlock the vehicle doors r ...