GMC Terrain: Doors / Obstacle Detection Features

If the liftgate encounters an obstacle during a power open or close cycle, the liftgate will automatically reverse direction and move a short distance away from the obstacle. After removing the obstruction, the power liftgate operation can be used again. If the liftgate encounters multiple obstacles on the same power cycle, the power function will deactivate. After removing the obstructions, manually close the liftgate which will allow normal power operation functions to resume.

If the vehicle is locked while the liftgate is closing, and an obstacle is encountered that prevents the liftgate from completely closing, the horn will sound as an alert that the liftgate did not close.

Pinch sensors are on the side edges of the liftgate. If an object is caught between the liftgate and the vehicle and presses against a sensor, the liftgate will reverse direction and open fully. The liftgate will remain open until it is activated again or closed manually.

    Power Liftgate Operation

    Warning You or others could be injured if caught in the path of the power liftgate. Make sure there is no one in the way of the liftgate as it is opening and closing...

    Setting the 3/4 Mode

    To change the position the liftgate stops at when opening: Select MAX or 3/4 mode and power open the liftgate. Stop the liftgate movement at the desired height by pressing any liftgate switch...

    Other information:

    GMC Terrain 2018-2023 Owners Manual: Ignition Positions


    The vehicle has an electronic keyless ignition with pushbutton start. The Remote Keyless Entry (RKE) transmitter must be in the vehicle for the system to operate. If the pushbutton start is not working, the vehicle may be near a strong radio antenna signal causing interference to the Keyless Access system...

    GMC Terrain 2018-2023 Owners Manual: Power Seat Adjustment


    Warning The power seats will work with the ignition off. Children could operate the power seats and be injured. Never leave children alone in the vehicle. To adjust a power seat, if equipped: Move the seat forward or rearward by sliding the control forward or rearward...

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