GMC 2018 Acadia Denali Owner's Manual page 40

Manual Liftgate
To unlock the liftgate, press
the power door lock switch or press
on the RKE transmitter twice to
unlock all doors. Press the touch
pad on the bottom of the liftgate 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.
If equipped with Keyless Access,
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 0 28.
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.
Power Liftgate Operation
You or others could be injured if
on
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.
Caution
Driving with an open and
unsecured liftgate may result in
damage to the power liftgate
components.
Keys, Doors, and Windows
Warning
If equipped with a power liftgate, the
switch is on the driver door. The
vehicle must be in P (Park).
The modes are:
MAX: Opens to maximum
height.
3/4: Opens to a reduced height
that can be set from 3/4 to fully
open. Use to prevent the liftgate
from opening into overhead
obstructions such as a garage
door or roof-mounted cargo. The
liftgate can be manually opened
all the way.
OFF: Opens manually only.
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