GMC Terrain: Doors / 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.
Operate the liftgate manually with a smooth motion and moderate speed. The system includes a feature which limits the manual closing speed to protect the components.
To open the liftgate, press 
on
the
power door lock switch or press 
on the RKE transmitter twice to
unlock all doors. Press the touch
pad on the underside of the liftgate
handle and lift up.
Use the pull cup to lower and close the liftgate. Do not press the touch pad while closing the liftgate. This will cause the liftgate to be unlatched.
The liftgate can be opened when locked if the RKE transmitter is within 1 m (3 ft) of the touch pad. See Remote Keyless Entry (RKE) System Operation.
The liftgate has an electric latch. If the battery is disconnected or has low voltage, the liftgate will not open. The liftgate will resume operation when the battery is reconnected and charged.
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...
Hands-Free Operation
The liftgate may be operated with a
kicking motion under the rear
bumper between the left exhaust
pipe and the license plate.
The RKE transmitter must be within
1 m (3 ft) of the rear bumper to
operate the power liftgate
hands-free...
Other information:
GMC Terrain 2018-2025 Owners Manual: Maintenance Schedule
Owner Checks and Services At Each Fuel Stop Check the engine oil level. See Engine Oil. Once a Month Check the tire inflation pressures. See Tire Pressure. Inspect the tires for wear. See Tire Inspection. Check the windshield washer fluid level...
GMC Terrain 2018-2025 Owners Manual: Engine Oil Life System
When to Change Engine Oil This vehicle has a computer system that indicates when to change the engine oil and filter. This is based on a combination of factors which include engine revolutions, engine temperature, and miles driven. Based on driving conditions, the mileage at which an oil change is indicated can vary considerably...