See also:

Problems with Route Guidance
Inappropriate route guidance may occur under one or more of the following conditions: You have not turned onto the road indicated. Route guidance may not be available when using automatic rerout ...

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. ...

Automatic Transmission
The shift lever is located on the center console between the front seats. There are several different positions for the shift lever. P (Park): This position locks the rear wheels. Use this ...