GMC Terrain: Doors / Setting the 3/4 Mode

GMC Terrain 2018-2026 Owners Manual / Keys, Doors, and Windows / Doors / Setting the 3/4 Mode

To change the position the liftgate stops at when opening:

  1. Select MAX or 3/4 mode and power open the liftgate.
  2. Stop the liftgate movement at the desired height by pressing any liftgate switch. Manually adjust the liftgate position if needed.
  3. Press and hold GMC Terrain. Setting the 3/4 Mode next to the pull cup on the bottom of the liftgate until the turn signals flash and a beep sounds. This indicates the setting has been recorded.

The liftgate cannot be set below a minimum programmable height. If there is no light flash or sound, then the height adjustment may be too low.

    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...

    Manual Operation

    Select OFF to manually operate the liftgate. Caution Attempting to move the liftgate too quickly and with excessive force may result in damage to the vehicle...

    Other information:

    GMC Terrain 2018-2026 Owners Manual: Hill and Mountain Roads


    Driving on steep hills or through mountains is different than driving on flat or rolling terrain. Tips include: Keep the vehicle serviced and in good shape. Check all fluid levels and brakes, tires, cooling system, and transmission. Shift to a lower gear when going down steep or long hills...

    GMC Terrain 2018-2026 Owners Manual: Folding the Seatback


    Either side of the seatback can be folded for more cargo space. Fold a seatback only when the vehicle is not moving. Caution Folding a rear seat with the seat belts still fastened may cause damage to the seat or the seat belts. Always unbuckle the seat belts and return them to their normal stowed position before folding a rear seat...

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