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. ...

Services Not Included in Roadside Service
Impound towing caused by violation of any laws. Legal fines. Mounting, dismounting, or changing of snow tires, chains, or other traction devices. Towing or services for vehicles driven on ...

Head Restraint Adjustment
Do not drive until the head restraints for all occupants are installed and adjusted properly. To achieve a comfortable seating position, change the seatback recline angle as little as necessary w ...