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:

    Engine Coolant (3.9L Engine)
    The cooling system in the vehicle is filled with DEX-COOL® engine coolant. This coolant is designed to remain in the vehicle for five years or 150,000 miles (240 000 km), whichever occurs first ...

    Matching Transmitter(s) toYour Vehicle
    Each remote keyless entry transmitter is coded to prevent another transmitter from unlocking your vehicle. If a transmitter is lost or stolen, a replacement can be purchased through your dealer. R ...

    Jump Starting (with or without eAssist)
    For more information about the vehicle battery, see Battery. If the battery has run down, try to use another vehicle and some jumper cables to start your vehicle. Be sure to use the following ...