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:

    Customer Assistance for Text Telephone (TTY) Users (U.S. and Canada)
    To assist customers who are deaf, hard of hearing, or speech-impaired and who use Text Telephones (TTYs), Cadillac has TTY equipment available at its Customer Assistance Center. Any TTY user can com ...

    Curve Tips
    Take curves at a reasonable speed. Reduce speed before entering a curve. Maintain a reasonable steady speed through the curve Wait until the vehicle is out of the curve before accelerating ge ...

    Manual Seats
    To adjust a manual seat: 1. Pull the handle at the front of the seat cushion. 2. Move the seat forward or rearward to adjust the seat position. 3. Release the handle to stop the seat from mov ...