See also:

Satellite Radio
Vehicles with an XM™ Satellite Radio tuner and a valid XM Satellite Radio subscription can receive XM programming. ...

Remote Keyless Entry (RKE) System Operation (Keyless Access)
The Keyless Access System transmitter will work up to 60m (195 ft) away. The Keyless Access System locks and unlocks the doors and trunk without pressing the buttons on the keyless access t ...

Potential Issues
Some OnStar services are disabled after five days. OnStar cannot perform Remote Door Unlock or Stolen Vehicle Assistance after the vehicle has been off continuously for five days. After five ...