2018 GMC YUKON child lock

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Introduction 3
Danger, Warning, and
Caution
Warning messages found on vehicle
labels and in this manual describe
hazards and what to do to avoid or
reduce them.
{Danger
Danger indicates a hazard with a
high level of risk which will result
in serious injury or death.
{Warning
Warning indicates a hazard that
could result in injury or death.
Caution
Caution indicates a hazard that
could result in property or vehicle
damage.
A circle with a slash through it is a
safety symbol which means“Do
Not,” “Do not do this,” or“Do not let
this happen.”
Symbols
The vehicle has components and
labels that use symbols instead of
text. Symbols are shown along with
the text describing the operation or
information relating to a specific
component, control, message,
gauge, or indicator.
M: Shown when the owner ’s
manual has additional instructions
or information.
*: Shown when the service
manual has additional instructions
or information.
0: Shown when there is more
information on another page —
“see page.” Vehicle Symbol Chart
Here are some additional symbols
that may be found on the vehicle
and what they mean. See the
features in this manual for
information.
9:
Airbag Readiness Light
#:Air Conditioning
!:Antilock Brake System (ABS)
$:Brake System Warning Light
":Charging System
I: Cruise Control
`:Do Not Puncture
^:Do Not Service
B:Engine Coolant Temperature
O:Exterior Lamps
_: Flame/Fire Prohibited
.:Fuel Gauge
+: Fuses
3:Headlamp High/Low-Beam
Changer
j: ISOFIX/LATCH System Child
Restraints

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
28 Keys, Doors, and Windows
Keys, Doors, and
Windows
Keys and Locks
Keys (Keyless Access) . . . . . . . . 28
Keys (Key Access) . . . . . . . . . . . . 29
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . . 32
Remote Keyless Entry (RKE) System Operation (Key
Access) . . . . . . . . . . . . . . . . . . . . . . 33
Remote Keyless Entry (RKE) System Operation (Keyless
Access) . . . . . . . . . . . . . . . . . . . . . . 35
Remote Vehicle Start . . . . . . . . . . 41
Door Locks . . . . . . . . . . . . . . . . . . . . 42
Power Door Locks . . . . . . . . . . . . . 43
Delayed Locking . . . . . . . . . . . . . . . 43
Automatic Door Locks . . . . . . . . . 44
Lockout Protection . . . . . . . . . . . . . 44
Safety Locks . . . . . . . . . . . . . . . . . . . 45
Doors
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . 45
Power Assist Steps . . . . . . . . . . . . 50
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . 51
Vehicle Alarm System . . . . . . . . . 51 Immobilizer . . . . . . . . . . . . . . . . . . . . 53
Immobilizer Operation . . . . . . . . . 53
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . 54
Power Mirrors . . . . . . . . . . . . . . . . . . 54
Folding Mirrors . . . . . . . . . . . . . . . . . 55
Heated Mirrors . . . . . . . . . . . . . . . . . 56
Automatic Dimming Mirror . . . . . 56
Blind Spot Mirrors . . . . . . . . . . . . . . 56
Reverse Tilt Mirrors . . . . . . . . . . . . 57
Interior Mirrors
Interior Rearview Mirrors . . . . . . . 57
Manual Rearview Mirror . . . . . . . . 57
Automatic Dimming Rearview
Mirror . . . . . . . . . . . . . . . . . . . . . . . . . 57
Child-View Mirror . . . . . . . . . . . . . . 57
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . 58
Power Windows . . . . . . . . . . . . . . . 58
Sun Visors . . . . . . . . . . . . . . . . . . . . . 60
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . 60
Keys and Locks
Keys (Keyless Access)
{Warning
Leaving children in a vehicle with
an ignition key or Remote
Keyless Entry (RKE) transmitter is
dangerous and children or others
could be seriously injured or
killed. They could operate the
power window or other controls or
make the vehicle move. The
windows will function with the key
in the ignition or with the RKE
transmitter in the vehicle, and
children or others could be caught
in the path of a closing window.
Do not leave children in a vehicle
with the ignition key or an RKE
transmitter.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Keys, Doors, and Windows 29
If the vehicle has the Keyless
Access system, there is a key in the
transmitter.This key is used for the driver door
and glove box.
If the vehicle has the Keyless
Access system, the transmitter has
a button on the side of the
transmitter used to remove the key.
Do not pull the key out without
pressing the button.
See your dealer if a replacement
key or additional key is needed.
If it becomes difficult to turn a key,
inspect the key blade for debris.
Periodically clean with a brush
or pick.
With an active OnStar service plan,
an OnStar Advisor may remotely
unlock the vehicle. See
OnStar
Overview 0406.
If locked out of the vehicle, see
Roadside Assistance Program
0 396.
If equipped with memory seats, RKE
transmitters 1 and 2 are linked to
seating positions of memory 1 or 2.
See Memory Seats 066.
Keys (Key Access)
{Warning
Leaving children in a vehicle with
an ignition key or Remote
Keyless Entry (RKE) transmitter is
dangerous and children or others
could be seriously injured or
killed. They could operate the
power window or other controls or
make the vehicle move. The
windows will function with the key
in the ignition or with the RKE
transmitter in the vehicle, and
(Continued)

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
42 Keys, Doors, and Windows
When the vehicle starts, the
parking lamps will turn on. The
doors will be locked and the
climate control system may
come on.
The engine will continue to run
for 10 minutes. Repeat
Steps 1 and 2 for a 10-minute
time extension.
Turn the ignition on to operate the
vehicle.
Extending Engine Run Time
The engine run time can be
extended by 10 minutes, for a total
of 20 minutes, if during the first
10 minutes Steps 1 and 2 are
repeated while the engine is still
running. An extension can be
requested, 30 seconds after
starting.
A maximum of two remote starts,
or a single start with an extension,
is allowed between ignition cycles.
The vehicle's ignition must be
turned on and then back off to use
remote start again. Canceling a Remote Start
To cancel a remote start, do one of
the following:
.
Press and hold
/until the
parking lamps turn off.
. Turn on the hazard warning
flashers.
. Turn the ignition on and then off.
Door Locks
{Warning
Unlocked doors can be
dangerous.
. Passengers, especially
children, can easily open
the doors and fall out of a
moving vehicle. The doors
can be unlocked and
opened while the vehicle is
moving. The chance of
being thrown out of the
vehicle in a crash is
increased if the doors are
not locked. So, all
(Continued)
Warning (Continued)
passengers should wear
seat belts properly and the
doors should be locked
whenever the vehicle is
driven.
. Young children who get into
unlocked vehicles may be
unable to get out. A child
can be overcome by
extreme heat and can suffer
permanent injuries or even
death from heat stroke.
Always lock the vehicle
whenever leaving it.
. Outsiders can easily enter
through an unlocked door
when you slow down or stop
the vehicle. Locking the
doors can help prevent this
from happening.
To lock or unlock the doors from
outside the vehicle:
. Press
QorKon the Remote
Keyless Entry (RKE) transmitter.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
58 Keys, Doors, and Windows
Windows
{Warning
Never leave a child, a helpless
adult, or a pet alone in a vehicle,
especially with the windows
closed in warm or hot weather.
They can be overcome by the
extreme heat and suffer
permanent injuries or even death
from heat stroke.
The vehicle aerodynamics are
designed to improve fuel economy
performance. This may result in a
pulsing sound when either rear
window is down and the front
windows are up. To reduce the
sound, open either a front window
or the sunroof, if equipped.
Power Windows
{Warning
Children could be seriously
injured or killed if caught in the
path of a closing window. Never
leave the Remote Keyless Entry
(RKE) transmitter or keys in a
vehicle with children. When there
are children in the rear seat, use
the window lockout button to
prevent operation of the windows.
SeeKeys (Keyless Access) 028
or Keys (Key Access) 029.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) 0216.
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.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
64 Seats and Restraints
Second Row Seats
The vehicle's second row seats
have head restraints in the outboard
seating positions that cannot be
adjusted.
The second row seat outboard head
restraints are not removable.
Third Row Seats
The third row seat head restraint
can be lowered to allow for better
visibility when the rear seat is
unoccupied.To lower the head restraint, press
the button located on the top of the
seatback and push the head
restraint down.
Return the lowered head restraint to
the upright position until it locks into
place. Push and pull on the head
restraint to make sure it is locked.
If you are installing a child restraint
in the third row seat, see
“Securing
a Child Restraint Designed for the
LATCH System” underLower
Anchors and Tethers for Children
(LATCH System) 0107.
Front Seats
Power Seat Adjustment
{Warning
You can lose control of the
vehicle if you try to adjust a driver
seat while the vehicle is moving.
Adjust the driver seat only when
the vehicle is not moving.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Seats and Restraints 71
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
the vehicle through the rear door
and left the vehicle without the
vehicle being shut off.
The feature can be turned on or off.
SeeVehicle Personalization 0162.
Heated Rear Seats (If
Equipped)
{Warning
If 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 069.
The buttons are on the rear of the
center console.
Press
MorLto 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 - 11/3/17
Seats and Restraints 79
Q: If my vehicle has airbags, whyshould I have to wear seat
belts?
A: Airbags are supplemental
systems only. They work with
seat belts —not instead of them.
Whether or not an airbag is
provided, all occupants still have
to buckle up to get the most
protection.
Also, in nearly all states and in
all Canadian provinces, the law
requires wearing seat belts.
How to Wear Seat Belts
Properly
This section is only for people of
adult size.
There are special things to know
about seat belts and children, and
there are different rules for smaller
children and infants. If a child will be
riding in the vehicle, see Older
Children 0100 orInfants and Young
Children 0101. Follow those rules
for everyone's protection. It is very important for all occupants
to buckle up. Statistics show that
unbelted people are hurt more often
in crashes than those who are
wearing seat belts.
There are important things to know
about wearing a seat belt properly.
.
Sit up straight and always keep
your feet on the floor in front
of you.
. Always use the correct buckle
for your seating position.
. Wear the lap part of the belt low
and snug on the hips, just
touching the thighs. In a crash, this applies force to the strong
pelvic bones and you would be
less likely to slide under the lap
belt. If you slid under it, the belt
would apply force on your
abdomen. This could cause
serious or even fatal injuries.
. Wear the shoulder belt over the
shoulder and across the chest.
These parts of the body are best
able to take belt restraining
forces. The shoulder belt locks if
there is a sudden stop or crash.
{Warning
You can be seriously injured,
or even killed, by not wearing
your seat belt properly.
. Never allow the lap or
shoulder belt to become
loose or twisted.
. Never wear the shoulder
belt under both arms or
behind your back.
. Never route the lap or
shoulder belt over an
armrest.