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.
See also:
Driving on Hills
Driving safely on hills requires good judgment and an understanding of what the vehicle can and cannot do.
WARNING
If the vehicle has the two-speed automatic transfer case, shifting the transfer cas ...
Satellite Radio Antenna
The XM Satellite Radio antenna is located on the roof of the vehicle.
Keep the antenna clear of obstructions for clear radio reception.
If the vehicle has a sunroof, the performance of the XM system ...
AM
The range for most AM stations is greater than for FM, especially at night. The longer range can cause station frequencies to interfere with each other. For better radio reception, most AM radio stati ...