See also:

XM Categories
XM stations are organized in categories. Removing or Adding Categories (Radio with CD and Radio with Six-Disc CD Only) 1. Press the CONFIG button. 2. Press the softkey below the XM tab. 3. ...

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. ...

Engine Heater
The engine coolant heater can provide easier starting and better fuel economy during engine warm-up in cold weather conditions at or below −18°C (0°F). Vehicles with an engine heater should ...