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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    Manual Rearview Mirror
    Adjust the inside rearview mirror for a clear view of the area behind your vehicle. To avoid glare of the headlamps from behind, move the lever to the right for nighttime use and to the center for day ...

    Vehicle Reminder Messages
    ICE POSSIBLE DRIVE WITH CARE This message is displayed when ice conditions are possible. TURN WIPER CONTROL TO INTERMITTENT FIRST This message is displayed when attempting to adjust the intermitten ...

    Maintenance When Trailer Towing
    The vehicle needs service more often when pulling a trailer. See this manual's Maintenance Schedule or Index for more information. Things that are especially important in trailer operation are ...