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. ...

Glove Box
To open, pull up on the handle. Use the key to lock and unlock. ...

Compass Operation
Press the on/off button once to turn the compass on or off. There is a compass display in the window in the upper right corner of the mirror face. The compass displays a maximum of two character ...