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:

    Steering Wheel Adjustment
    Push the control up or down to tilt the steering wheel up or down. To set the memory position, see Vehicle Personalization  . ...

    Customer Assistance Offices (U.S. and Canada)
    Cadillac encourages customers to call the toll-free number for assistance. However, if a customer wishes to write or e-mail Cadillac, the letter should be addressed to: United States Cadillac Cu ...

    Transmission Messages
    SERVICE TRANSMISSION This message displays if there is a problem with the transmission. See your dealer. SHIFT DENIED This message displays when using the Driver Shift Control (DSC) and a ...