GMC YUKON 2015 Workshop Manual

Black plate (18,1)GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7063682) - 2015 - crc - 6/5/14
2-18 Keys, Doors, and Windows
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 on
page 9-30.
{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 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 liftgate
glass, or press
con the RKE
transmitter. Do not leave the liftgate
glass open when raising the liftgate. There will be a delay in the release
of the liftgate glass if there is an
attempt to open it while the rear
wipers are 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 (Keyless Access) on
page 2-7 orRemote Keyless Entry
(RKE) System Operation (Key
Access) on page 2-5.
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.

Black plate (19,1)GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7063682) - 2015 - crc - 6/5/14
Keys, Doors, and Windows 2-19
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.
If equipped with a power liftgate, the
switch is on the overhead console.
The vehicle must be in P (Park).There are three modes:
.MAX: The liftgate power opens
to the maximum height.
.3/4: The liftgate power opens to
a reduced height that can be set
from 3/4 to fully open. 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 manually
opened all the way.
.OFF: The liftgate only operates
manually in this position.
To power open or close the liftgate,
select MAX or 3/4 mode.
.Pressbtwice quickly on the
RKE transmitter until the liftgate
moves.
.Press8on the overhead
console. The driver door must
also be unlocked.
.Press the touch pad on the
outside liftgate handle after
unlocking all doors. If equipped
with Keyless Access a locked
vehicle can be opened if the
RKE transmitter is within 1m
(3 ft.) of the touch pad.
.Presslon the bottom edge of
the liftgate next to the latch to
close.
Press any liftgate button or the
touch pad or
bon the RKE
transmitter while the liftgate is
moving to stop it. Pressing again

Black plate (20,1)GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7063682) - 2015 - crc - 6/5/14
2-20 Keys, Doors, and Windows
restarts the operation in the reverse
direction. The touch pad on the
liftgate handle cannot be used to
close the liftgate.
Do not manually force the liftgate to
open or close during a power cycle.
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. Make sure
the liftgate is closed and latched
before driving.
If the power liftgate support strut
has lost pressure, the turn signals
will flash and a chime will soundwhile the liftgate automatically
closes. See your dealer for service
before using the power liftgate.
Obstacle Detection Features
If the liftgate encounters an obstacle
during a power open or close cycle,
a warning chime will sound and 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, which
will allow normal power operation
functions to resume.
If the vehicle is locked while the
liftgate is closing, and an obstacle is
encountered that 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 open fully. 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
power open the liftgate.
2. Stop the liftgate movement at the desired height by pressing
any liftgate switch. Manually
adjust the liftgate position if
needed.
3. Press and hold
8next 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.

Black plate (21,1)GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7063682) - 2015 - crc - 6/5/14
Keys, Doors, and Windows 2-21
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.
Hands-Free Operation
If equipped with Hands-Free Vehicle
Access, the liftgate may be opened
via a kicking motion beneath the
rear bumper.
If the RKE transmitter is not within
1m (3 ft) of the liftgate during
hands-free operation, the liftgate will
not open.
To operate the hands-free system:
1. Under the center of the rearbumper, kick your foot up in one
swift motion and then pull
it back.
2. Do not touch the liftgate until it has fully opened.
Keep the RKE transmitter away
from the rear of the vehicle or turn
the liftgate mode to OFF when
cleaning or working near the rear
bumper to avoid accidental opening
of the liftgate.

Black plate (22,1)GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7063682) - 2015 - crc - 6/5/14
2-22 Keys, Doors, and Windows
Power Assist Steps
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.
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 theobstruction, 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.
There are two other modes of
operation:
Deploy Mode: To extend both power
assist steps for cleaning, press
j
while the vehicle is in P (Park)
or (N) . Press
jagain to retract
them. The DIC will display a
message.
Lock Mode: 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.

Black plate (23,1)GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7063682) - 2015 - crc - 6/5/14
Keys, Doors, and Windows 2-23
Slow Flash:Alarm system is
armed.
Arming the Alarm System
1. Turn off the vehicle.
2. Lock the vehicle with one of
three ways:
.Use the RKE transmitter.
.Use the Keyless Access
system.
.With a door open, pressQ
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
by pressing
Kon 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:
.PressKon 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.
See Security Messages on
page 5-39.

Black plate (24,1)GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7063682) - 2015 - crc - 6/5/14
2-24 Keys, Doors, and Windows
Intrusion Sensor and
Inclination Sensor
In addition to the standard
theft-deterrent system features, this
system may also have an inclination
sensor and intrusion sensor.
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.
Intrusion and Inclination
Sensors Disable Switch
It is recommended that the intrusion
and inclination sensors be
deactivated if pets are left in the
vehicle or the vehicle is being
transported.With the vehicle off, press
oin
the front overhead console to turn
off the feature.
The indicator light will come on
momentarily, indicating that these
sensors have been disabled until
the next time the alarm system is
armed.
Immobilizer
See Radio Frequency Statement on
page 13-12.
Immobilizer Operation
(Key Access)
This vehicle has a passive
theft-deterrent system.
The system does not have to be
manually armed or disarmed.

Black plate (25,1)GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7063682) - 2015 - crc - 6/5/14
Keys, Doors, and Windows 2-25
The vehicle is automatically
immobilized when the vehicle is
turned off.
The system is automatically
disarmed when the key is turned to
ON/RUN, ACC/ACCESSORY,
or START from the LOCK/OFF
position.
The security light, in the instrument
cluster, comes on if there is a
problem with arming or disarming
the theft-deterrent system.
When trying to start the vehicle, the
security light comes on briefly when
the ignition is turned on.
If the engine does not start and the
security light stays on, there is a
problem with the system. Turn the
ignition off and try again.
If the engine still does not start, and
the key appears to be undamaged,
try another ignition key. It may be
necessary to check the fuse. See
Fuses on page 10-34. If the engine
still does not start with the other key,the vehicle needs service. If the
vehicle does start, the first key may
be faulty. See your dealer.
It is possible for the immobilizer
system to learn new or replacement
keys. Up to eight keys can be
programmed for the vehicle. To
program additional keys, see
Keys
on page 2-2. To program additional
transmitters, see Remote Keyless
Entry (RKE) System Operation
(Keyless Access) on page 2-7 or
Remote Keyless Entry (RKE)
System Operation (Key Access) on
page 2-5.
Do not leave the key or device that
disarms or deactivates the vehicle
theft system in the vehicle.
See your dealer to get a new key
blank cut exactly as the ignition key
that operates the system.Immobilizer Operation
(Keyless Access)
This vehicle has a passive
theft-deterrent system.
The system does not have to be
manually armed or disarmed.
The vehicle is automatically
immobilized when the transmitter
leaves the vehicle.
The immobilization system is
disarmed when the ignition button is
pressed in and a valid transmitter is
found in the vehicle.
The security light in the instrument
cluster comes on if there is a
problem with arming or disarming
the theft-deterrent system.

Black plate (26,1)GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7063682) - 2015 - crc - 6/5/14
2-26 Keys, Doors, and Windows
The system has one or more
transmitters matched to an
immobilizer control unit in the
vehicle. Only a correctly matched
transmitter will start the vehicle.
If the transmitter is ever damaged,
you may not be able to start the
vehicle.
When trying to start the vehicle, the
security light comes on briefly when
the ignition is turned on.
If the engine does not start and the
security light stays on, there is a
problem with the system. Turn the
vehicle off and try again.
If the RKE transmitter appears to be
undamaged, try another transmitter
or place the transmitter in the
transmitter pocket/insert next to the
center console storage area
between the driver and front
passenger seats. See“Starting theVehicle with a Low Transmitter”
under
Remote Keyless Entry (RKE)
System Operation (Keyless Access)
on page 2-7 orRemote Keyless
Entry (RKE) System Operation (Key
Access) on page 2-5.
If the engine does not start with the
other transmitter or when the
transmitter is in the pocket in the
center console, the vehicle needs
service. See your dealer who can
service the theft-deterrent system
and have a new transmitter
programmed to the vehicle.
Do not leave the transmitter or
device that disarms or deactivates
the theft-deterrent system in the
vehicle.Exterior Mirrors
Convex Mirrors
{Warning
A convex mirror can make things,
like other vehicles, look farther
away than they really are. If you
cut too sharply into the right lane,
you could hit a vehicle on the
right. Check the inside mirror or
glance over your shoulder before
changing lanes.
The passenger side mirror is convex
shaped. A convex mirror's surface is
curved so more can be seen from
the driver seat.

Black plate (27,1)GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7063682) - 2015 - crc - 6/5/14
Keys, Doors, and Windows 2-27
Power Mirrors
Shown with Power Folding
Mirrors, Manual Folding Similar
To adjust the mirrors:
1. Press (1) or (2) to select the driver or passenger side mirror.
The indicator light comes on.
2. Press the arrows on the control pad to move the mirror up,
down, right, or left.
3. Adjust the outside mirror so that the side of the vehicle and the
area behind are seen. 4. Press either (1) or (2) again to
deselect the mirror. The indicator
light goes off.
Exterior Automatic Dimming
Mirror
If equipped, the driver outside mirror
automatically adjusts for the glare of
headlamps behind. This feature
comes on when the vehicle is
started. See Automatic Dimming
Rearview Mirror on page 2-30.
Turn Signal Indicator
The vehicle may also have a turn
signal indicator on the mirror. An
arrow on the mirror flashes in the
direction of the turn or lane change.
Folding Mirrors
Power Folding
1. Press{to fold the mirrors
inward.
2. Press
{again to return the
mirrors to the driving position.
Resetting the Power Folding
Mirrors
Reset the power folding mirrors if:
.The mirrors are accidentally
obstructed while folding.