See also:

Navigation
OnStar navigation requires the Directions and Connections service plan. Push to receive directions or have them sent to the vehicle navigation screen. Destinations can also be forwarded to the vehic ...

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 operate if ...

Rear Seats
The rear seat has adjustable headrests in the outboard seating positions. The height of the headrest can be adjusted. Pull the headrest up to raise it. To lower the headrest, push down on the headres ...