GMC Terrain 2017 Owner's Manual page 34

If equipped, the power liftgate
switch is on the overhead console.
The vehicle must be in P (Park) to
operate. The taillamps flash when
the power liftgate moves.
The three modes are:
MAX : Opens to maximum height.
3/4 : Opens to a reduced height
that can be set by the vehicle
operator. Use this setting to prevent
the liftgate from opening into
overhead obstructions such as a
garage door or roof mounted cargo
during power operation. The liftgate
can still be fully opened manually.
OFF : Opens manually only.
Manual operation of a liftgate that
also has power operation requires
more effort than a standard manual
liftgate.
To open or close the liftgate, select
MAX or 3/4 mode and then:
Press and hold on the RKE
transmitter until the liftgate starts
moving. See Remote Keyless
Entry (RKE) System
Operation 0 26.
Press the power liftgate switch
on the overhead console, with
the driver door unlocked.
Keys, Doors, and Windows
Press and release
liftgate next to the latch to close the
liftgate.
Press any liftgate switch or the
touch pad while the liftgate is
moving to stop it. Pressing again
restarts the motion. There is a
minimum distance that the power
liftgate must already be open for the
system to hold it open. If movement
is stopped below that minimum, the
liftgate closes.
Caution
Manually forcing the liftgate to
open or close during a power
cycle can damage the vehicle.
Allow the power cycle to
complete.
The power liftgate may be
temporarily disabled under extreme
temperatures or low battery
conditions. If this occurs, the liftgate
can still be operated manually.
If the vehicle is shifted out of
P (Park) while the power function is
in progress, the liftgate will continue
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