See also:

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. ...

Immobilizer Operation (Key Access)
This vehicle has a passive theft-deterrent system. The system does not have to be manually armed or disarmed. The vehicle is automatically immobilized when the key is removed from the igniti ...

Listing Stored Numbers
The list command will list all the stored numbers and name tags. Using the “List” Command. 1. Press . The system responds “Ready,” followed by a tone. 2. Say “Directory.” 3. Say “Hands Free C ...