OnStar Services

See also:

Rear Window Defogger
The rear window defogger uses a warming grid to remove fog from the rear window. (Rear): Press this button to turn the rear window defogger on or off. An indicator light in the button will co ...

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 ...

Seating & Cargo
The standard eight-way power driver's seat offers plenty of adjustment range, so spouses of wide-ranging sizes should have no trouble finding their fit. If you're much taller than 6 feet, avoid th ...