GMC Terrain: Onstar.com - Services for People with Disabilities - OnStar Additional Information - OnStar - GMC Terrain Owner's ManualGMC Terrain: 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.

    TTY Users
    OnStar has the ability to communicate to the deaf, hard&-ofhearing, or speech&-impaired customers while in the vehicle. The available dealer&-installed TTY system can provide in-vehicl ...

    OnStar Personal Identification Number (PIN)
    A PIN is needed to access some of the OnStar services, like Remote Door Unlock and Stolen Vehicle Assistance. You will be prompted to change the PIN the first time when speaking with an Advisor. T ...

    See also:

    Decreasing cruise speed
    To reduce cruising speed, press and hold control (4). Release the switch when the desired speed is reached, the new speed will be set and maintained. The set speed can be decreased in steps of 2k ...

    ConversationMirror
    The sunglasses holder uses a convex mirror for its bottom panel. You can see all the vehicle passengers in this mirror. To use the mirror, open the sunglasses holder fully, push it to the ...

    Driving on grades
    - Before going down a steep hill, slow down and shift into lower gear (if necessary, use 1st gear) in order to utilize the engine braking effect and prevent overheating of your vehicle’s bra ...