GMC Terrain: OnStar® - Performance and Maintenance - In Brief - GMC Terrain Owner's ManualGMC Terrain: OnStar®

If equipped, this vehicle has a comprehensive, in-vehicle system that can connect to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic Services. See OnStar Overview on page 14‑1 for more information.

    Roadside Assistance Program
    As the owner of a new GMC, you are automatically enrolled in the Roadside Assistance program. See Roadside Assistance Program (U.S. and Canada) on page 13‑7 or Roadside Assistance Program (M ...

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    Transmission fault
    In the event that the transmission develops a fault, a warning message may be displayed in the message centre and only limited gears may become available. You should seek qualified assistance imme ...

    Scan
    This function plays the first ten seconds of each track/audio file. To start scanning: 1. Press OK/MENU. 2. Turn TUNE to Scan. > The first ten seconds of each track/ audio file will be playe ...

    Engine Drag Control (EDC)
    EDC helps keep the engine running if the wheels show a tendency to lock, e.g., when shifting down in the Geartronic manual shifting mode or while using the engine's braking function on a slipp ...