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:

    Checking Coolant
    The vehicle must be on a level surface when checking the coolant level. Check to see if coolant is visible in the coolant surge tank. If the coolant inside the coolant surge tank is boiling, do not d ...

    Sunroof
    If your vehicle has a power sunroof, the switches are located on the headliner. To express-open the sunroof press the rear of the driver’s side switch to the second detent position, and rel ...

    Navigation/Radio System
    For vehicles with a navigation radio system, see the separate Navigation System manual. ...