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 Lighting
    The vehicle has an illuminated entry feature. When the doors are opened, the dome lamps will come on if the dome override button is in the extended position. If the dome override button is pressed ...

    Storing the Flat Tire with a Flat Load Floor (Sedan)
    1. Put back all tools as they were stored in the rear storage compartment and put the compartment cover back on. 2. Put the flat tire in the tire storage bag, if there is one. 3. Place the t ...

    Skip Shift (CTS–V)
    Under light acceleration, the transmission will only allow you to shift from 1 (First) to 4 (Fourth). Shifts from 1 (First) to 2 (Second) or 3 (Third) are not allowed. This helps improve fuel ...