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:

    Trailer Towing
    Three important considerations have to do with weight: • The weight of the trailer • The weight of the trailer tongue • The total weight on the vehicle's tires ...

    Loading the Vehicle for Off-Road Driving
    WARNING • Unsecured cargo on the load floor can be tossed about when driving over rough terrain. You or your passengers can be struck by flying objects. Secure the cargo properly. • Keep cargo i ...

    Exterior
    GM says it sought to provide a "confident and strong stance" with the Terrain's styling. To that end, the crossover has oversized fenders and liberal bumper cladding, both of which set t ...