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:

    Lamp Messages
    AFL (ADAPTIVE FORWARD LIGHTING) LAMPS NEED SERVICE This message displays when the Adaptive Forward Lighting (AFL) system is disabled and needs service. See your dealer. See Adaptive Forwa ...

    Locking Rear Axle
    Vehicles with a locking rear axle can give more traction on snow, mud, ice, sand, or gravel. It works like a standard axle most of the time, but when traction is low, this feature will allow the r ...

    CTS Coupe in the Market
    In terms of arresting exterior design and luxurious cabin furnishings, the CTS coupe has it made. Many coupe buyers, though, want more than a car that just looks great: They want something that go ...