light GMC YUKON XL 2018 Owner's Manual

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
Keys, Doors, and Windows 53
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 0 56 .
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
To adjust power folding mirrors,
if equipped:
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.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
Keys, Doors, and Windows 57
The power windows work when the
ignition is on, in ACC/ACCESSORY,
or when Retained Accessory Power
(RAP) is active. See Retained
Accessory Power (RAP) 0 212 .
Using the window switch, press to
open or pull to close the window.
The windows may be temporarily
disabled if they are used repeatedly
within a short time.
Window Lockout
This feature stops the rear
passenger window switches from
working. .
Press
Z to engage the rear
window lockout feature. The
indicator light is on when
engaged.
.
Press
Z again to disengage.
Window Express Movement All windows can be opened without
holding the window switch. Press
the switch down fully and quickly
release to express open the
window.
If equipped, pull the window switch
up fully and quickly release to
express close the window. Briefly press or pull the window
switch in the same direction to stop
that window ’ s express movement.
Window Automatic Reversal
System The express-close feature will
reverse window movement if it
comes in contact with an object.
Extreme cold or ice could cause the
window to auto-reverse. The
window will operate normally after
the object or condition is removed.
Automatic Reversal System
Override
{ Warning
If automatic reversal system
override is active, the window will
not reverse automatically. You or
others could be injured and the
window could be damaged.
Before using automatic reversal
system override, make sure that
all people and obstructions are
clear of the window path.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
Seats and Restraints 67"Vehicle Personalization Settings"
previously in this section and
Vehicle Personalization 0 158 .
If turned on, the positions saved to
B are automatically recalled when
one of the following occurs:
.
The vehicle is turned off and the
driver door is opened within a
short time.
.
The vehicle is turned off with the
driver door open.
To stop Easy Exit Recall movement,
press any of the following memory
controls:
.
Power seat
.
Memory SET, 1, 2, or
B.
Power mirror, with the driver or
passenger side mirror selected
.
Power steering wheel,
if equipped
.
Adjustable pedals, if equipped
Obstructions
If something has blocked the driver
seat and/or power steering wheel
while recalling a memory position, the recall may stop. Remove the
obstruction and try the recall again.
If the memory position still does not
recall, see your dealer for service.
Heated and Ventilated
Front Seats
{ WarningIf temperature change or pain to
the skin cannot be felt, the seat
heater may cause burns. To
reduce the risk of burns, use care
when using the seat heater,
especially for long periods of
time. Do not place anything on
the seat that insulates against
heat, such as a blanket, cushion,
cover, or similar item. This may
cause the seat heater to
overheat. An overheated seat
heater may cause a burn or may
damage the seat. The buttons are on the center stack
below the climate control system. To
operate, the engine must be
running.
Press
I to heat the driver or
passenger seatback only.
Press
J to heat the driver or
passenger seat cushion and
seatback.
Press
C to ventilate the driver or
passenger seat.
The indicator light on the button
comes on when this feature is on.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
68 Seats and Restraints Press the button once for the
highest setting. With each press of
the button, the seat will change to
the next lower setting, and then to
the off setting. The indicator lights
next to the buttons indicate three for
the highest setting and one for the
lowest. If the heated seats are on
high for an extended time, their level
may automatically be lowered.
The passenger seat may take
longer to heat up.
Remote Start Auto Heated and
Ventilated Seats
During a remote start, the heated or
ventilated seats can be turned on
automatically. When it is cold
outside, the heated seats turn on,
and when it is hot outside the
ventilated seats turn on. The heated
or ventilated seats are canceled
when the ignition is turned on. Press
the heated or ventilated seat button
to use the heated or ventilated seats
after the vehicle is started. The heated or ventilated seat
indicator lights do not turn on during
a remote start.
The temperature performance of an
unoccupied seat may be reduced.
This is normal.
The heated or ventilated seats will
not turn on during a remote start
unless they are enabled in the
vehicle personalization menu.
See Remote Vehicle Start 0 39 and
Vehicle Personalization 0 158 .
Rear Seats Rear Seat Reminder If equipped, the message REAR
SEAT REMINDER LOOK IN REAR
SEAT displays under certain
conditions indicating there may be
an item or passenger in the rear
seat. Check before exiting the
vehicle.
This feature will activate when a
second row door is opened while
the vehicle is on or up to 10 minutes
before the vehicle is turned on.
There will be an alert when the
vehicle is turned off. The alert does
not directly detect objects in the rear
seat; instead, under certain
conditions, it detects when a rear
door is opened and closed,
indicating that there may be
something in the rear seat.
The feature is active only once each
time the vehicle is turned on and off,
and will require reactivation by
opening and closing the second row
doors. There may be an alert even
when there is nothing in the rear
seat; for example, if a child entered

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
Seats and Restraints 69the vehicle through the rear door
and left the vehicle without the
vehicle being shut off.
The feature can be turned on or off.
See Vehicle Personalization 0 158 .
Heated Rear Seats
{ WarningIf you cannot feel temperature
change or pain to the skin, the
seat heater may cause burns.
See the Warning under Heated
and Ventilated Front Seats 0 67 . The buttons are on the rear of the
center console.
Press
M or
L to heat the left
outboard or right outboard seat
cushion.
Press the button once for the
highest setting. With each press of
the button, the heated seat changes
to the next lower setting, and then
the off setting. Indicator lights on the
button show the setting: three for
high, two for medium, and one
for low.
If the heated seats are on high for
an extended time, their level may
automatically be lowered. Second Row Seats Reclining Seatbacks To recline the seatback:
1. Lift the lever on the outboard
side of the seat.
2. Move the seatback to the
desired position, and then
release the lever to lock the
seatback in place.
3. Push and pull on the seatback
to make sure it is locked.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
78 Seats and Restraints
Lap-Shoulder Belt All seating positions in the vehicle
have a lap-shoulder belt except for
the center front passenger position,
if equipped, which has a lap belt.
See Lap Belt 0 83 .
If you are using a rear seating
position with a detachable seat belt,
and the seat belt is not attached,
see Third Row Seats 0 74 for
instructions on reconnecting the
seat belt to the mini-buckle.
The following instructions explain
how to wear a lap-shoulder belt
properly.
1. Adjust the seat, if the seat is
adjustable, so you can sit up
straight. To see how, see
“ Seats ” in the Index. 2. Pick up the latch plate and pull
the belt across you. Do not let
it get twisted.
The lap-shoulder belt may lock
if you pull the belt across you
very quickly. If this happens, let
the belt go back slightly to
unlock it. Then pull the belt
across you more slowly.
If the shoulder portion of a
passenger belt is pulled out all
the way, the child restraint
locking feature may be
engaged. If this happens, let
the belt go back all the way
and start again. Engaging the child restraint
locking feature in the front
outboard seating position may
affect the passenger sensing
system. See Passenger
Sensing System 0 91 .
For front seating positions,
if the webbing locks in the latch
plate before it reaches the
buckle, tilt the latch plate flat to
unlock.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
84 Seats and Restraints properly. See your dealer to have it
repaired. Torn or frayed seat belts
may not protect you in a crash.
They can rip apart under impact
forces. If a belt is torn or frayed,
have it replaced immediately.
Make sure the seat belt reminder
light is working. See Seat Belt
Reminders 0 140 .
Keep seat belts clean and dry. See
Seat Belt Care 0 84 .
Seat Belt Care Keep belts clean and dry.
{ WarningDo not bleach or dye seat belt
webbing. It may severely weaken
the webbing. In a crash, they
might not be able to provide
adequate protection. Clean and
rinse seat belt webbing only with
mild soap and lukewarm water.
Allow the webbing to dry.
Seat belts should be properly cared
for and maintained. Seat belt hardware should be kept
dry and free of dust or debris. As
necessary exterior hard surfaces
and seat belt webbing may be lightly
cleaned with mild soap and water.
Ensure there is not excessive dust
or debris in the mechanism. If dust
or debris exists in the system please
see the dealer. Parts may need to
be replaced to ensure proper
functionality of the system.
Replacing Seat Belt
System Parts after a
Crash
{ Warning
A crash can damage the seat belt
system in the vehicle. A damaged
seat belt system may not properly
protect the person using it,
resulting in serious injury or even
death in a crash. To help make
sure the seat belt systems are
working properly after a crash,
have them inspected and any
necessary replacements made as
soon as possible. After a minor crash, replacement of
seat belts may not be necessary.
But the seat belt assemblies that
were used during any crash may
have been stressed or damaged.
See your dealer to have the seat
belt assemblies inspected or
replaced.
New parts and repairs may be
necessary even if the seat belt
system was not being used at the
time of the crash.
Have the seat belt pretensioners
checked if the vehicle has been in a
crash, or if the airbag readiness light
stays on after you start the vehicle
or while you are driving. See Airbag
Readiness Light 0 141 .

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
86 Seats and Restraints
{ WarningBecause airbags inflate with great
force and faster than the blink of
an eye, anyone who is up
against, or very close to any
airbag when it inflates can be
seriously injured or killed. Do not
sit unnecessarily close to any
airbag, as you would be if sitting
on the edge of the seat or leaning
forward. Seat belts help keep you
in position before and during a
crash. Always wear a seat belt,
even with airbags. The driver
should sit as far back as possible
while still maintaining control of
the vehicle. The seat belts and
the front outboard passenger
airbags are most effective when
you are sitting well back and
upright in the seat with both feet
on the floor.
Occupants should not lean on or
sleep against the front center
armrest or console in vehicles
with a front center airbag.
(Continued) Warning (Continued) Occupants should not lean on or
sleep against the door or side
windows in seating positions with
seat-mounted side impact airbags
and/or roof-rail airbags.
{ WarningChildren who are up against,
or very close to, any airbag when
it inflates can be seriously injured
or killed. Always secure children
properly in the vehicle. To read
how, see Older Children 0 97 or
Infants and Young Children 0 98 . There is an airbag readiness light
on the instrument cluster, which
shows the airbag symbol.
The system checks the airbag
electrical system for malfunctions.
The light tells you if there is an
electrical problem. See Airbag
Readiness Light 0 141 .
Where Are the Airbags?
The driver frontal airbag is in the
center of the steering wheel.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
Seats and Restraints 91Additional windshield breakage may
also occur from the front outboard
passenger airbag.
.
Airbags are designed to inflate
only once. After an airbag
inflates, you will need some new
parts for the airbag system.
If you do not get them, the
airbag system will not be there
to help protect you in another
crash. A new system will include
airbag modules and possibly
other parts. The service manual
for the vehicle covers the need
to replace other parts.
.
The vehicle has a crash sensing
and diagnostic module which
records information after a
crash.
See Vehicle Data Recording and
Privacy 0 398 and Event Data
Recorders 0 398 .
.
Let only qualified technicians
work on the airbag systems.
Improper service can mean that
an airbag system will not work
properly. See your dealer for
service. Passenger Sensing
System The vehicle has a passenger
sensing system for the front
outboard passenger position. The
passenger airbag status indicator
will light on the overhead console
when the vehicle is started.
United States
Canada and Mexico
The words ON and OFF, or the
symbols for on and off, will be
visible during the system check.
When the system check is
complete, either the word ON or OFF, or the symbol for on or off, will
be visible. See Passenger Airbag
Status Indicator 0 142 .
The passenger sensing system
turns off the front outboard
passenger frontal airbag under
certain conditions. No other airbag
is affected by the passenger
sensing system.
The passenger sensing system
works with sensors that are part of
the front outboard passenger seat
and seat belt. The sensors are
designed to detect the presence of
a properly seated occupant and
determine if the front outboard
passenger frontal airbag should be
allowed to inflate or not.
According to accident statistics,
children are safer when properly
secured in a rear seat in the correct
child restraint for their weight
and size.
Whenever possible, children aged
12 and under should be secured in
a rear seating position.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
92 Seats and Restraints Never put a rear-facing child seat in
the front. This is because the risk to
the rear-facing child is so great,
if the airbag inflates.
{ WarningA child in a rear-facing child
restraint can be seriously injured
or killed if the passenger frontal
airbag inflates. This is because
the back of the rear-facing child
restraint would be very close to
the inflating airbag. A child in a
forward-facing child restraint can
be seriously injured or killed if the
passenger frontal airbag inflates
and the passenger seat is in a
forward position.
Even if the passenger sensing
system has turned off the
passenger frontal airbag, no
system is fail-safe. No one can
guarantee that an airbag will not
deploy under some unusual
circumstance, even though the
airbag is turned off.
(Continued) Warning (Continued) Never put a rear-facing child
restraint in the front seat, even if
the airbag is off. If securing a
forward-facing child restraint in
the front outboard passenger
seat, always move the seat as far
back as it will go. It is better to
secure child restraints in the rear
seat. Consider using another
vehicle to transport the child
when a rear seat is not available.
The passenger sensing system is
designed to turn off the front
outboard passenger frontal airbag if:
.
The front outboard passenger
seat is unoccupied.
.
The system determines an infant
is present in a child restraint.
.
A front outboard passenger
takes his/her weight off of the
seat for a period of time.
.
There is a critical problem with
the airbag system or the
passenger sensing system. When the passenger sensing
system has turned off the front
outboard passenger frontal airbag,
the off indicator will light and stay lit
as a reminder that the airbag is off.
See Passenger Airbag Status
Indicator 0 142 .
The passenger sensing system is
designed to turn on the front
outboard passenger frontal airbag
anytime the system senses that a
person of adult size is sitting
properly in the front outboard
passenger seat.
When the passenger sensing
system has allowed the airbag to be
enabled, the on indicator will light
and stay lit as a reminder that the
airbag is active.
For some children, including
children in child restraints, and for
very small adults, the passenger
sensing system may or may not turn
off the front outboard passenger
frontal airbag, depending upon the
person's seating posture and body
build. Everyone in the vehicle who
has outgrown child restraints should