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:

    Tire Rotation
    If the vehicle has non-directional tires, they should be rotated every 12 000 km/7,500 mi. See Maintenance Schedule. Tires are rotated to achieve a uniform wear for all tires. The first rotat ...

    Overview
    Cadillac unveiled the 2013 XTS, the newest addition to the Cadillac luxury sedan lineup. It arrives in showrooms in U.S. and Canadian showrooms in the spring of 2012 as the most technologically ad ...

    Washer Fluid
    What to Use When adding windshield washer fluid to the vehicle, be sure to read the manufacturer's instructions before use. If you will be operating your vehicle in an area where the temper ...