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:

    Handling
    The ATS' handling is the car's claim to potential fame. Several Cadillac models have been introduced since the 2003 CTS sedan set the company's new tone for world-class athleticism, yet none has c ...

    Starter Switch Check
    WARNING When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured. 1. Before starting this check, be sure there is enough room ...

    Footnotes — Maintenance Schedule Additional Required Services — Severe
    a) Vehicles with different size front and rear tires do not have tire rotation. See Tire Rotation. b) Or every two years, whichever comes first. c) Check all fuel and vapor lines and hoses f ...