GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-18552429) - 2025
Keys, Doors, and Windows 17
When the safety lock is enabled, adults and
o
l
der children will not be able to open the rear
door from the inside. Cancel the safety locks to
enable the doors to open from the inside.
To cancel the safety lock:
1. Unlock the door and open it from
the outside.
2. Move the lever up to unlock. Do the same for
the other door.
Doors
Liftgate
{ Warning
E
xhaust gases can enter the vehicle if
it
is driven with the liftgate or trunk/
hatch open, or with any objects that
pass through the seal between the body
and the trunk/hatch or liftgate. Engine
exhaust contains carbon monoxide (CO)
which cannot be seen or smelled. It can
cause unconsciousness and even death.
If the vehicle must be driven with the
liftgate or trunk/hatch open:
(Continued)
Warning (Continued)
•
Cl
ose all of the windows.
•
Fully open the air outlets on or under the
instrument panel.
•
Adjust the climate control system to
asetting that brings in only outside air
and set the fan speed to the highest
setting. See “Climate Control Systems”
in the Index.
•
If the vehicle is equipped with
apower liftgate, disable the power
liftgate function.
See Engine Exhaust 3169.
Caution
To avoid damage to the liftgate or liftgate
glass, make sure the area above and behind
the liftgate is clear before opening it.
Manual Liftgate
To
unlock the liftgate, press K on the power
door lock switch or press K on the remote key
twice within five seconds. See Remote Key
Operation 37.
To open the liftgate, press the touch pad in the
liftgate handle and lift up.
If equipped with Keyless Access, the liftgate can
be opened when locked if the remote key is
within 1m (3 ft) of the liftgate. See Remote Key
Operation 37.
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.