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:

    Entry/Exit Recall
    If the vehicle has this feature, it allows you to select your preferred automatic recall of stored memory and exit positions. See Memory Seats for more information. Press the customization ...

    Braking and tire systems
    CTS-V includes sophisticated braking and tire systems, in partnership with two companies renowned for high-performance technology: Brembo and Michelin. Brembo brakes are at all four corners and in ...

    Engine Oil Additives/Engine Oil Flushes
    Do not add anything to the oil. The recommended oils with the dexos specification and displaying the dexos certification mark are all that is needed for good performance and engine protection ...