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:

    Retained Accessory Power (RAP)
    These accessories can be used after the engine is turned off: - Audio system (up to 10 minutes or driver door is opened). - Power windows, sunroof (if equipped), and power outlets (up to 10 minu ...

    Engine Overheating
    The vehicle has several indicators to warn of engine overheating. There are two engine hot messages that may be displayed in the Driver Information Center (DIC). See Engine Cooling System Mes ...

    Lateral Acceleration (CTS-V Only)
    Lateral Acceleration measures the force of a turn or corner. For example, when turning right, it forces to the left. This gauge displays the “g” force from 0.0 g to 2.0 g. ...