See also:

Coverage
Services are provided up to 5 years/ 160 000 km (100,000 mi), whichever comes first. In the U.S., anyone driving the vehicle is covered. In Canada, a person driving the vehicle without permission ...

Cellular and GPS Antennas
Avoid placing items over or near the antenna to prevent blocking cellular and GPS signal reception. Cellular reception is required for OnStar to send remote signals to the vehicle. ...

Programming Transmitters to the Vehicle
Only keyless access transmitters programmed to the vehicle will work. If a transmitter is lost or stolen, a replacement can be purchased and programmed through your dealer. The vehicle can be ...