GMC YUKON DENALI 2015 Workshop Manual

Black plate (20,1)GMC 2015i Yukon Denali/Yukon XL Denali Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-8431504) - 2015 - CRC - 7/30/14
2-20 Keys, Doors, and Windows
.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 5-46.
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.

Black plate (21,1)GMC 2015i Yukon Denali/Yukon XL Denali Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-8431504) - 2015 - CRC - 7/30/14
Keys, Doors, and Windows 2-21
With the vehicle off, pressoin
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
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.
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 the
Vehicle with a Low Transmitter”
under Remote Keyless Entry (RKE)
System Operation on page 2-3.
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.

Black plate (22,1)GMC 2015i Yukon Denali/Yukon XL Denali Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-8431504) - 2015 - CRC - 7/30/14
2-22 Keys, Doors, and Windows
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.
Power Mirrors
To adjust the mirrors:
1. Press (1) or (2) to select the driver or passenger side mirror.
2. Press the arrows on the control pad to move each mirror in the
desired direction.
3. Press either (1) or (2) again to deselect the mirror.
To power fold the mirrors:
1. Press
{to fold the mirrors
inward. 2. Press
{again to return the
mirrors to the driving position.
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.
Heated Mirrors
The heated outside rearview mirrors
turn on when the rear window
defogger is on.
1(Rear Window Defogger): This
button is on the climate control
panel. Press to heat the mirror.
See “Rear Window Defogger” under
Dual Automatic Climate Control
System on page 8-1.

Black plate (23,1)GMC 2015i Yukon Denali/Yukon XL Denali Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-8431504) - 2015 - CRC - 7/30/14
Keys, Doors, and Windows 2-23
Automatic Dimming
Mirror
The driver outside mirror
automatically adjusts for the glare of
headlamps from behind.
Blind Spot Mirrors
If equipped, there is a small convex
mirror built into the upper and outer
corner of the driver outside rearview
mirror. It can show objects that may
be in the vehicle's blind zone.
Driving with the Blind Spot
Mirror
Actual Mirror View1. When the approaching vehicle is
a long distance away, the image
in the main mirror is small and
near the inboard edge of the
mirror.
2. As the vehicle gets closer, the image in the main mirror gets
larger and moves outboard.
3. As the vehicle enters the blind zone, the image transitions from
the main mirror to the blind spot
mirror.
4. When the vehicle is in the blind zone, the image only appears in
the blind spot mirror.
Using the Outside Mirror with
the Blind Spot Mirror
1. Set the main mirror so that theside of the vehicle can just be
seen and the blind spot mirror
has an unobstructed view.

Black plate (24,1)GMC 2015i Yukon Denali/Yukon XL Denali Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-8431504) - 2015 - CRC - 7/30/14
2-24 Keys, Doors, and Windows
2. When checking for traffic orbefore changing a lane, look at
the main driver/passenger side
mirror to observe traffic in the
adjacent lane, behind your
vehicle. Check the blind spot
mirror for a vehicle in the blind
zone. Then, glance over your
shoulder to double check before
moving slowly into the
adjacent lane.
Reverse Tilt Mirrors
If equipped with memory seats, the
passenger and/or driver mirror tilts
to a preselected position when the
vehicle is in R (Reverse). This
allows the curb to be seen when
parallel parking. The mirror(s) return to the original
position when:
.The vehicle is shifted out of
R (Reverse), or remains in
R (Reverse) for about
30 seconds.
.The ignition is turned off.
.The vehicle is driven in
R (Reverse) above a set speed.
To turn this feature on or off, see
Vehicle Personalization on
page 5-50.
Interior Mirrors
Interior Rearview Mirrors
Adjust the rearview mirror for a clear
view of the area behind your
vehicle.
If equipped with OnStar, the vehicle
may have three control buttons at
the bottom of the mirror. See your
dealer for more information about
OnStar and how to subscribe to it.
See OnStar Overview on page 14-1.
Do not spray glass cleaner directly
on the mirror. Use a soft towel
dampened with water.
Automatic Dimming
Rearview Mirror
The mirror will automatically reduce
the glare of the headlamps from
behind. The dimming feature comes
on each time the vehicle is started.

Black plate (25,1)GMC 2015i Yukon Denali/Yukon XL Denali Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-8431504) - 2015 - CRC - 7/30/14
Keys, Doors, and Windows 2-25
Child-View Mirror
If equipped, push up on the
sunglasses bin and release. Push
the bin back in halfway to secure
the mirror in position.
Push the mirror back up when not
in use.
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 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. See
Keys on page 2-1.

Black plate (26,1)GMC 2015i Yukon Denali/Yukon XL Denali Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-8431504) - 2015 - CRC - 7/30/14
2-26 Keys, Doors, and Windows
The driver door has switches that
control all windows. Each
passenger door switch only controls
that window. The power windows
work when the ignition is in ON/
RUN or ACC/ACCESSORY, or in
Retained Accessory Power (RAP).
SeeRetained Accessory Power
(RAP) on page 9-25.
Press the switch to lower the
window. Pull the switch up to
raise it.
Express-Down Windows
Windows that have the
express-down feature allow the
windows to be lowered without
holding the switch. Press the
window switch fully and release it to
activate the express-down feature.
The express mode can be canceled
at any time by briefly pressing or
pulling the switch.
Express-Up Window
If equipped, the driver window
express-up feature allows the
window to be raised without holding
the switch. Pull the window switch
up fully and release it to activate the
express-up feature. The express-up
feature can be canceled at any time
by briefly pulling the switch.
Programming the Power
Windows
If the battery on the vehicle has
been recharged or disconnected,
or is not working, the driver power window will need to be
reprogrammed for the express-up
feature to work.
To reprogram the power windows:
1. Close all doors.
2. Place the ignition in ACC/
ACCESSORY or ON/RUN/
START.
3. From any open position, pull the power window switch up until the
window is fully closed.
4. Hold the switch up for approximately two seconds after
the window is fully closed.
The window is now reprogrammed.
Express Window Anti-Pinch
Feature
If any object is in the path of the
window when express-up is active,
the window stops at the obstacle
and auto-reverses to a preset
factory position. Weather conditions
such as severe icing also cause the
window to auto-reverse. The

Black plate (27,1)GMC 2015i Yukon Denali/Yukon XL Denali Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-8431504) - 2015 - CRC - 7/30/14
Keys, Doors, and Windows 2-27
window returns to normal operation
once the obstacle or condition is
removed.
Express Window Anti-Pinch
Override
{Warning
If express override is activated,
the window will not reverse
automatically. You or others could
be injured and the window could
be damaged. Before you use
express override, make sure that
all people and obstructions are
clear of the window path.
The anti-pinch feature can be
overridden in a supervised mode.
Hold the window switch in the
partially or fully pulled up position.
The window rises for as long as the
switch is held. Once the switch is
released, the express mode is
reactivated. In this mode, the window can still
close on an object in its path. Use
care when using the override mode.
Window Lockout
This feature prevents the rear
passenger windows from operating,
except from the driver position.
.PressZto activate the rear
window locks. An indicator light
will illuminate when the feature
is on.
.PressZagain to deactivate the
rear window locks.
Sun Visors
Pull the sun visor down to block
glare. Detach the sun visor from the
center mount to pivot to the side
window or, if equipped, extend
along the rod.

Black plate (28,1)GMC 2015i Yukon Denali/Yukon XL Denali Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-8431504) - 2015 - CRC - 7/30/14
2-28 Keys, Doors, and Windows
Roof
Sunroof
1. Open or Close
2. Vent
On vehicles with a sunroof, the
sunroof only operates when the
ignition is in ACC/ACCESSORY or
ON/RUN, or when Retained
Accessory Power (RAP) is active.
SeeRetained Accessory Power
(RAP) on page 9-25. Vent:
From the closed position,
press the rear of switch (2) to vent
the sunroof.
Open/Close: To open the sunroof,
press and hold switch (1) until the
sunroof reaches the desired
position. Press and hold the front of
switch (1) to close it.
Express-Open/Express-Close: To
express-open the sunroof, fully
press and release the rear of
switch (1) until the sunroof reaches
the desired position. To
express-close the sunroof, fully
press and release the front of
switch (1). Press the switch again to
stop it.
When the sunroof is opened, an air
deflector will automatically raise.
The air deflector will retract when
the sunroof is closed.
The sunroof also has a sunshade
which can be pulled forward to block
sun rays. The sunshade must be
opened and closed manually. If an object is in the path of the
sunroof while it is closing, the
anti-pinch feature will detect the
object and stop the sunroof.
Dirt and debris may collect on the
sunroof seal or in the track. This
could cause an issue with sunroof
operation or noise. It could also plug
the water drainage system.
Periodically open the sunroof and
remove any obstacles or loose
debris. Wipe the sunroof seal and
roof sealing area using a clean
cloth, mild soap, and water. Do not
remove grease from the sunroof.
If water is seen dripping into the
water drainage system, this is
normal.

Black plate (1,1)GMC 2015i Yukon Denali/Yukon XL Denali Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-8431504) - 2015 - CRC - 7/30/14
Seats and Restraints 3-1
Seats and
Restraints
Head Restraints
Head Restraints . . . . . . . . . . . . . . . 3-2
Front Seats
Power Seat Adjustment . . . . . . . 3-3
Lumbar Adjustment . . . . . . . . . . . 3-4
Reclining Seatbacks . . . . . . . . . . 3-4
Memory Seats . . . . . . . . . . . . . . . . 3-5
Heated and Cooled FrontSeats . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Rear Seats
Heated Rear Seats . . . . . . . . . . . 3-9
Second Row Seats . . . . . . . . . . . 3-9
Third Row Seats . . . . . . . . . . . . . 3-14
Safety Belts
Safety Belts . . . . . . . . . . . . . . . . . . 3-16
How to Wear Safety BeltsProperly . . . . . . . . . . . . . . . . . . . . 3-18 Lap-Shoulder Belt . . . . . . . . . . . 3-19
Safety Belt Use During
Pregnancy . . . . . . . . . . . . . . . . . . 3-24
Safety Belt Extender . . . . . . . . . 3-24
Safety System Check . . . . . . . . 3-24
Safety Belt Care . . . . . . . . . . . . . 3-25
Replacing Safety Belt System Parts after a Crash . . . . . . . . . 3-25
Airbag System
Airbag System . . . . . . . . . . . . . . . 3-26
Where Are the Airbags? . . . . . 3-28
When Should an AirbagInflate? . . . . . . . . . . . . . . . . . . . . . 3-30
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . 3-31
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . 3-31
What Will You See after an Airbag Inflates? . . . . . . . . . . . . 3-31
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . 3-33
Servicing the Airbag-Equipped Vehicle . . . . . . . . . . . . . . . . . . . . . 3-37 Adding Equipment to the
Airbag-Equipped Vehicle . . . 3-37
Airbag System Check . . . . . . . . 3-38
Replacing Airbag System Parts after a Crash . . . . . . . . . 3-39
Child Restraints
Older Children . . . . . . . . . . . . . . . 3-39
Infants and Young
Children . . . . . . . . . . . . . . . . . . . . 3-41
Child Restraint Systems . . . . . 3-44
Where to Put the Restraint . . . 3-46
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . 3-47
Replacing LATCH System Parts After a Crash . . . . . . . . . 3-55
Securing Child Restraints (Rear Seat) . . . . . . . . . . . . . . . . . 3-56
Securing Child Restraints (Front Passenger Seat) . . . . 3-58