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:

    SERVICE PARK BRAKE
    For vehicles with the electric parking brake, this message displays if a problem is detected with the electric parking brake system. See your dealer for service. ...

    Hazard Warning Flashers
    (Hazard Warning Flashers): Press this button on the instrument panel, to make the front and rear turn signal lamps flash on and off. This warns others that you are having trouble. Press aga ...

    Parking (Manual Transmission)
    Before getting out of the vehicle, place the shift lever in R (Reverse) and firmly apply the parking brake. For vehicles with the key access ignition, turn the ignition key to OFF/LOCK, and r ...