Onstar.com

The website provides access to account information, manages the OnStar subscription, and allows viewing of videos of each service.

Get subscription plan pricing and sign up for OnStar Vehicle Diagnostics. Click on the “My Account” tab on the home page.

    See also:

    Driving on Grades
    Reduce speed and shift to a lower gear before starting down a long or steep downgrade. If the transmission is not shifted down, the brakes might have to be used so much that they would get hot and n ...

    Engine Power Messages
    ENGINE POWER IS REDUCED This message displays and a chime sounds when the cooling system temperature gets too hot and the engine further enters the engine coolant protection mode. See Engine Over ...

    XM NavTraffic (USA and Canada)
    Vehicles with the navigation system have an XM NavTraffic receiver. XM NavTraffic is a subscription service provided via XM Satellite Radio. XM NavTraffic provides real-time traffic information fu ...