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:

    Starting the Vehicle Messages
    PRESS BRAKE TO START VEHICLE This message is displayed when attempting to start the vehicle without first pressing the brake pedal. SERVICE KEYLESS START SYSTEM This message is displayed if ...

    Door Ajar Messages
    DOOR OPEN A door open symbol will be displayed on the DIC showing which door is open. If the vehicle has been shifted out of P (Park), a DOOR OPEN message will also be displayed. Close the door c ...

    Leaving the Vehicle with the Engine Running
    WARNING It can be dangerous to leave the vehicle with the engine running. The vehicle could move suddenly if the shift lever is not fully in P (Park) with the parking brake firmly set. And, ...