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. ...

Steering, Suspension, and Chassis Components
Visually inspect front and rear suspension and steering system for damaged, loose, or missing parts or signs of wear. Inspect the power steering for proper hook-up, binding, leaks, cracks, chafing ...

Reclining Seatbacks
To adjust the seatback: Tilt the top of the control rearward to recline. Tilt the top of the control forward to raise. See Reclining Seatbacks  . ...