Vehicle and Power Issues

OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not operate if the battery is discharged or disconnected.

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    Fuel Economy Light
    This light should come on briefly as the vehicle is started. If it does not come on, have the vehicle serviced by your dealer. For vehicles with the fuel economy mode light, it comes on when t ...

    Playing an MP3/WMA Disc
    CD/DVD players with the MP3 feature are capable of playing an MP3/WMA on DVD+/−R, CD−R, or CD−RW discs. For more information, see MP3. ...

    Dolly Towing (All-Wheel-Drive Vehicles)
    Notice: Towing an all-wheel-drive vehicle with all four wheels on the ground, or even with only two of its wheels on the ground, will damage drivetrain components. Do not tow an all-wheel-d ...