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. ...

Roof Rack System
WARNING If something is carried on top of the vehicle that is longer or wider than the roof rack—like paneling, plywood, or a mattress—the wind can catch it while the vehicle is being driven. ...

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 ...