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.

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    Wiper Blades
    Wiper blades need to be cleaned and kept in good condition to provide a clear view. • Signs of wear include streaking, skipping across the windshield, and worn or split rubber. • Trained ...

    Sunroof
    For vehicles with a sunroof, the sunroof only operates when the ignition is in ON/RUN or ACC/ ACCESSORY, or in Retained Accessory Power (RAP). See Retained Accessory Power (RAP)  for more i ...

    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 arou ...