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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    Sunroof (if equipped)
    You can tilt or slide the sunroof by operating the “TILT” part of the sunroof switch or the “SLIDE” part of the sunroof switch when the ignition switch is in the “ON” position. There i ...

    Setting guidance volume
    To set the guidance volume, perform the following procedure. 1. Select the “GUIDANCE VOL”/“GUIDANCE VOLUME” menu. 2. Set the guidance volume by operating the “TUNE/TRACK/CH” dial. ...

    Accelerator downshift — In D position —
    For passing or hill climbing, fully depress the accelerator pedal to the floor. This shifts the transmission down into a lower gear, depending on the vehicle speed. ...