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:

    Average Vehicle Speed
    The Average Vehicle Speed display shows the average speed of the vehicle in kilometers per hour (km/h) or miles per hour (mph). This average is calculated based on the various vehicle speeds recor ...

    ELECTRONIC KEY NOT DETECTED
    If the vehicle has the keyless access system, this message displays if the vehicle does not detect the presence of a transmitter when you have attempted to start the vehicle or a vehicle d ...

    High/Low—Beam Headlamps (Uplevel)
    The high/low beam headlamps on the uplevel are High Intensity Discharge (HID) and should be replaced at the dealer. ...