Transferring Service

Push Reactivation for Subsequent Owners to request account transfer eligibility information. The Advisor can assist in canceling or removing account information. If OnStar receives information that vehicle ownership has changed, OnStar may send a voice message to the vehicle, requesting updated account information.

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    Battery
    The battery supplies power to start the engine and operate any additional electrical accessories. • To avoid break-down or failure to start the vehicle, maintain a battery with full cranking power. ...

    Heated Mirrors
    For vehicles with heated mirrors: The heated outside rearview mirrors turn on when the rear window defogger is on and help to clear fog or frost from the surface of the mirrors. (Rear Window Defo ...

    Service Vehicle Messages
    SERVICE AC SYSTEM This message is displayed if there is a problem with the air conditioning system. Take the vehicle to your dealer for service. SERVICE POWER STEERING This message is displayed i ...