GMC Terrain: Diagnostics - OnStar Services - OnStar - GMC Terrain Owner's ManualGMC Terrain: Diagnostics

OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring System. If a diagnostics check is needed between e-mails, push OnStar Additional Information, and an Advisor can run a check.

    OnStar Mobile App
    With an iPhone® or Android™-based mobile device, an OnStar mobile app can be downloaded. The vehicle can be remote started, if equipped, or the doors can be unlocked from anywhere there is cell ...

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    Important safety precautions
    WARNING: Do not overfill the fuel tank. The pressure in an overfilled tank may cause leakage and lead to fuel spray and fire. WARNING: The fuel system may be under pressure. If you hear a hissing ...

    Combining safety belt and LATCH lower anchors for attachingchild safety seats
    When used in combination, either the safety belt or the LATCH lower anchors may be attached first, provided a proper installation is achieved. Attach the tether strap afterward, if included with t ...

    Critical warning message (red)
    Critical warning message (red) Illuminates when a critical warning message is available in the message centre. ...