liftgate GMC YUKON 2018 User Guide

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Keys, Doors, and Windows 45
Anti-Lockout feature can be turned
on or off. SeeVehicle
Personalization 0162.
Safety Locks
The rear door safety locks prevent
passengers from opening the rear
doors from inside the vehicle.
Press{to activate the safety locks
on the rear doors. The indicator light
comes on when activated.
Press
{again to deactivate the
safety locks.
Doors
Liftgate
{Warning
Exhaust 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:
. Close all of the windows.
. Fully open the air outlets on
or under the instrument
panel.
(Continued)
Warning (Continued)
.Adjust the climate control
system to a setting 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 a power liftgate, disable
the power liftgate function.
See Engine Exhaust 0219.
Caution
To avoid damage to the liftgate or
liftgate glass, make sure the area
above and behind the liftgate is
clear before opening it.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
46 Keys, Doors, and Windows
Manual Liftgate
To open the liftgate, pressKon the
power door lock switch or press
K
on the RKE transmitter twice to
unlock all doors. Press the touch
pad (1) on the underside of the
liftgate handle and lift up.
Press the button (2) above the
license plate to open the liftglass,
or press
ctwice quickly on the
RKE transmitter. Do not leave the
liftglass open when raising the
liftgate. There will be a delay in the release
of the liftglass if there is an attempt
to open it while the rear wiper is in
motion.
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 RKE transmitter must be
within 1 m (3 ft) of the liftgate to
automatically unlock it. See
Remote
Keyless Entry (RKE) System
Operation (Key Access) 033 or
Remote Keyless Entry (RKE)
System Operation (Keyless Access)
0 35.
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
{Warning
You or others could be injured if
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.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Keys, Doors, and Windows 47
If equipped, the switch is on the
overhead console. 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 objects such
as a garage door or roof-mounted
cargo. The liftgate can be opened
all the way manually. OFF :
Opens manually only.
To open or close the liftgate, select
MAX or 3/4 mode and then:
. Press
btwice quickly on the
RKE transmitter until the liftgate
moves.
. Press
8on the overhead
console. The driver door must
be unlocked.
. Press the touch pad on the
underside of the liftgate handle
after unlocking all doors.
If equipped with Keyless Access,
a locked vehicle can be opened
if the RKE transmitter is within
1 m (3 ft) of the touch pad.
.Presslon the bottom edge of
the liftgate next to the latch to
close.
Press any liftgate button, the
touch pad, or
bon the RKE
transmitter while the liftgate is
moving to stop it. Pressing any
liftgate button or pressing
btwice
quickly on the RKE transmitter
restarts the operation in the reverse
direction. Pressing the touch pad on
the liftgate handle will restart the
motion, but only in the opening
direction.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
48 Keys, Doors, and Windows
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 in extremely
low temperatures, or after repeated
power cycling over a short period of
time. If this occurs, the liftgate can
still be operated manually. Select
OFF on the liftgate switch.
If the vehicle is shifted out of
P (Park) while the power function is
in progress, the liftgate will continue
to completion. If the vehicle is
accelerated before the liftgate has
completed moving, the liftgate may
stop or reverse direction. Check for
Driver Information Center (DIC)
messages and make sure the
liftgate is closed and latched before
driving. Falling Liftgate Detection
If the power liftgate automatically
closes after a power opening cycle,
it indicates that the system is
reacting to excess weight on the
liftgate or a possible support strut
failure. Remove any excess weight.
If the liftgate continues to
automatically close after opening,
see your dealer for service before
using the power liftgate.
Interfering with the power liftgate
motion or manually closing the
liftgate too quickly after power
opening may resemble a support
strut failure. This could also activate
the falling liftgate detection feature.
Allow the liftgate to complete its
operation and wait a few seconds
before manually closing the liftgate.
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. After
removing the obstruction, the power
liftgate operation can be used again.If the liftgate encounters multiple
obstacles on the same power cycle,
the power function will deactivate.
After removing the obstructions,
manually close the liftgate. This will
allow normal power operation
functions to resume.
If the vehicle is locked while the
liftgate is closing, and an obstacle
prevents the liftgate from completely
closing, the horn will sound as an
alert that the liftgate did not close.
Pinch sensors are on the side
edges of the liftgate. If an object is
caught between the liftgate and the
vehicle and presses against a
sensor, the liftgate will reverse
direction and stop at a partially open
position. The liftgate will remain
open until it is activated again or
closed manually.Setting the 3/4 Mode
To change the position the liftgate
stops at when opening:
1. Select MAX or 3/4 mode and open the liftgate.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Keys, Doors, and Windows 49
2. Stop the liftgate movement atthe desired height by pressing
any liftgate button. Manually
adjust the liftgate position if
needed.
3. Press and hold
lon the
bottom edge of the liftgate next
to the latch on the outside 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.
Manual Operation
Select OFF to manually operate the
liftgate. See “Manual Liftgate” at the
beginning of this section.
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.
Hands-Free Operation
If equipped with Hands-Free Vehicle
Access, the liftgate may be
operated with a kicking motion
under the rear bumper.
The liftgate will not operate if the
RKE transmitter is not within
1 m (3 ft).
The hands-free feature will not work
while the liftgate is moving. To stop
the liftgate while in motion use one
of the liftgate switches.
Length of Kick Zone

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
50 Keys, Doors, and Windows
To operate, move your foot in a
forward kicking motion under the
center of the rear bumper, then pull
it back.
Caution
Splashing water may cause the
liftgate to open. Keep the RKE
transmitter away from the rear
bumper detection area or turn the
liftgate mode to OFF when
cleaning or working near the rear
bumper to avoid accidental
opening.
. Do not sweep your foot side
to side.
. Do not keep your foot under the
bumper; the liftgate will not
activate.
. Do not touch the liftgate until it
has stopped moving.
. This feature may be temporarily
disabled under some conditions.
If the liftgate does not respond to
the kick, open or close the liftgate by another method or
start the vehicle. The feature will
be re-enabled.
When closing the liftgate using this
feature, there will be a short delay.
The rear lights will flash and a
chime will sound. Step away from
the liftgate before it starts moving.
Power Assist Steps
{Warning
Never place hands or other body
parts between the deployed
power assist steps and the
vehicle. You or others could be
seriously injured.
{Warning
Never step on a moving assist
step. You or others could be
seriously injured. If equipped, the power assist steps
will deploy when the door is opened
and automatically retract
three seconds after the door is
closed. The power assist steps will
retract immediately if the vehicle
starts moving.
Disable the power assist steps
before jacking or placing any object
under the vehicle. Too much ice
buildup may prevent deployment of
the power assist steps. Check the
step position before exiting the
power assist steps, clear the ice,
then enable the assist steps and
confirm normal function prior to use.
Keep hands, children, pets, objects,
and clothing clear of the power
assist steps when in motion. The
steps will reverse direction if they
encounter an obstruction when
opening or closing. Remove the
obstruction, then open and close the
door on the same side to complete
the motion of the assist steps. If the
obstruction is not cleared, the assist
steps remain extended while driving.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Keys, Doors, and Windows 51
To extend both power assist
steps for cleaning, press
j
while the vehicle is in
P (Park) or N (Neutral). Press
j
again to retract them. The DIC will
display a message.
Enable/Disable
Press and hold
jfor four seconds
to lock and disable the power
assist steps. Press and hold
jfor
four seconds again to enable them.
The DIC will display a message.
Vehicle Security
This vehicle has theft-deterrent
features; however, they do not make
the vehicle impossible to steal.
Vehicle Alarm System
The indicator light, on the
instrument panel near the
windshield, indicates the status of
the system.
Off : Alarm system is disarmed.
On Solid : Vehicle is secured
during the delay to arm the system.
Fast Flash : Vehicle is unsecured.
A door, liftgate, or the hood is open.
Slow Flash : Alarm system is
armed.
Arming the Alarm System
1. Turn off the vehicle.
2. Lock the vehicle in one of three ways:
.Use the RKE transmitter.
. Use the Keyless Access
system.
. With a door open, press
Q
on the interior of the door.
3. After 30 seconds the alarm system will arm, and the
indicator light will begin to
slowly flash. Pressing
Qon the
RKE transmitter a second time
will bypass the 30-second
delay and immediately arm the
alarm system.
The vehicle alarm system will not
arm if the doors are locked with
the key.
If the driver door is opened without
first unlocking with the RKE
transmitter, the horn will chirp and
the lights will flash to indicate
pre-alarm. If the vehicle is not
started, or the door is not unlocked

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
52 Keys, Doors, and Windows
by pressingKon the RKE
transmitter during the 10-second
pre-alarm, the alarm will be
activated.
The alarm will also be activated if a
passenger door, the liftgate, or the
hood is opened without first
disarming the system. When the
alarm is activated, the turn signals
flash and the horn sounds for about
30 seconds. The alarm system will
then re-arm to monitor for the next
unauthorized event.
Disarming the Alarm System
To disarm the alarm system or turn
off the alarm if it has been activated:
. Press
Kon the RKE transmitter.
. Unlock the vehicle using the
Keyless Access system.
. Start the vehicle.
To avoid setting off the alarm by
accident:
. Lock the vehicle after all
occupants have exited. .
Always unlock a door with the
RKE transmitter, or use the
Keyless Access system.
Unlocking the driver door with
the key will not disarm the
system or turn off the alarm.
How to Detect a Tamper
Condition
IfKis pressed on the RKE
transmitter and the horn chirps three
times, an alarm occurred previously
while the alarm system was armed.
If the alarm has been activated, a
message will appear on the DIC.
Power Sounder, Inclination
Sensor, and Intrusion Sensor
In addition to the standard
theft-deterrent system features, this
system may also have a power
sounder, inclination sensor, and
intrusion sensor.
The power sounder provides an
audible alarm which is distinct from
the vehicle’ s horn. It has its own power source, and can sound an
alarm if the vehicle’s battery is
compromised.
The inclination sensor can set off
the alarm if it senses movement of
the vehicle, such as a change in
vehicle orientation.
The intrusion sensor monitors the
vehicle interior, and can activate the
alarm if it senses unauthorized entry
into the vehicle’s interior. Do not
allow passengers or pets to remain
in the vehicle when the intrusion
sensor is activated.
Before arming the theft-deterrent
system and activating the intrusion
sensor:
.
Make sure all doors and
windows are completely closed.
. Secure any loose items such as
a sunshades.
. Make sure there are no
obstructions blocking the
sensors in the front overhead
console.
. Close DVD screens before
leaving the vehicle.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
76 Seats and Restraints
To return the seat to the sitting
position from the tumbled position:1. Pull the seat down until both sides of the seat are latched to
the floor. Make sure the seat is
securely latched to the floor
before raising the seatback.
If both sides are not latched to
the floor, the seatback will not
raise.
2. Lift the seatback and push it rearward. Push and pull on the
seatback to make sure it is
locked.
Third Row Seats
Folding the Seatback
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. The transmission must be in
P (Park) for this feature to work.
The third row seatbacks can be
folded to increase cargo space.
1. If equipped, Second Row
Power Seat Fold and
Tumble Switches
2. If equipped, Third Row Power Seat Fold and Raise
Switches
To fold the seatback:
1. Open the liftgate to access the controls for the third row seat. 2. Make sure that there is nothing
under, in front of, or on
the seat.
3. Fully lower the head restraints. See Head Restraints 063. Put
the second row seatback in the
upright position. See Second
Row Seats 071.
4. Disconnect the rear seat belt
mini-latch, using a key in the
slot on the mini-buckle, and let
the belt retract into the
headliner.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Seats and Restraints 77
5. Stow the mini-latch in theholder in the headliner.
6. Press and hold the switch (2) on the side trim of the cargo
area to fold the third row
seatback.
The left switch folds the left
seatback, and the right switch
folds the right seatback.
7. Repeat the steps for the other seatback, if desired.
The switches (1) can be used to fold
or fold and tumble the second row
seats from the cargo area. See
Second Row Seats 071.
Returning the Third Row
Seatback to the Upright
Position
1. Second Row Power Seat
Fold and Tumble Switches
2. Third Row Power Seat Fold and Raise Switches
To return the third row seatback to
the upright position:
1. Open the liftgate to access the controls for the seat.
2. Press and hold the switch (2) on the side trim of the cargo
area to raise the third row
seatback. The left switch raises the left
seatback, and the right switch
raises the right seatback.
{Warning
A seat belt that is improperly
routed, not properly attached,
or twisted will not provide the
protection needed in a crash. The
person wearing the belt could be
seriously injured. After raising the
rear seatback, always check to be
sure that the seat belts are
properly routed and attached, and
are not twisted.
3. Reconnect the center seat belt mini-latch to the mini-buckle.
Do not let it twist.
4. Pull on the seat belt to be sure the mini-latch is secure.
5. Repeat the steps for the other seatback, if desired.