Reactivation for Subsequent Owners

Push speak to an Advisor as soon as and follow the prompts to speak to an Advisor as soon as possible after acquiring the vehicle.

The Advisor will update vehicle records and will explain the OnStar service offers and options available.

    See also:

    Setting the Clock
    To set the time and date for the radio with CD (MP3): 1. Turn the ignition key to ACC/ACCESSORY or ON/RUN. 2. Press to turn the radio on. 3. Press and the HR, MIN, MM, DD, YYYY (hour, minut ...

    SERVICE BATTERY CHARGING SYSTEM
    This message is displayed when there is a fault in the battery charging system. Take the vehicle to your dealer for service. ...

    What to Use
    WARNING: Adding only plain water to the cooling system can be dangerous. Plain water, or some other liquid such as alcohol, can boil before the proper coolant mixture will. The vehicle’s cool ...