climate control GMC YUKON XL 2017 Owner's Manual

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
Climate Controls 195
The climate control system uses the
information from these sensors to
maintain comfort settings by
adjusting the outlet temperature, fan
speed, and air delivery mode. The
system may also supply cooler air to
the side of the vehicle facing the
sun. The recirculation mode will also
be used as needed to maintain cool
outlet temperatures.
Rear Climate Control
System
The rear climate control system is
located on the rear of the center
console storage. The rear climate
settings can be adjusted with this
system.
1. Fan Control
2. AUTO (Automatic Operation)
3. MODE (Air Delivery ModeControl)
4. TEMP (Temperature Control)
5. Heated Rear Seats (If Equipped)
If the dual automatic climate control
system rear climate control lockout
feature is locked, the rear climate
control settings can only be
adjusted from the front seat.
Automatic Operation
AUTO : Press AUTO to
automatically control the
temperature, air delivery, and fan
speed for rear seat passengers. A is
indicated in the display when
automatic operation is active.
If any of the rear climate control
settings are manually adjusted, full
automatic operation is cancelled.
Press AUTO to return to full
automatic operation.
The display only indicates climate
control functions when the system is
in rear independent mode.
Manual Operation
9: Turn clockwise or
counterclockwise to increase or
decrease the fan speed. Turn
completely counterclockwise to turn
the fan/power off.
TEMP : Turn clockwise or
counterclockwise to increase or
decrease the airflow temperature
into the passenger area. If the
SYNC button is pressed on the front

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
196 Climate Controls
climate controls, the rear climate
temperature is linked to the driver
temperature setting.
MODE :Press to change the
direction of the airflow in the vehicle.
Repeatedly press the button until
the desired mode appears on the
display. Multiple presses will cycle
through the delivery selections.
MorL: If equipped, pressMorLto heat the left or right outboard seat
cushion. See Heated Rear
Seats 070.
Air Vents
Adjustable air vents are in the
center and on the side of the
instrument panel.
1. Slider Knob
2. Thumbwheel
Move the slider knobs (1) to change
the direction of the airflow.
Use the thumbwheels (2) near the
air vents to open or close off the
airflow. Operation Tips
.
Clear away any ice, snow,
or leaves from the air inlets at
the base of the windshield that
could block the flow of air into
the vehicle.
. When you enter a vehicle in cold
weather, press the fan up button
to the maximum fan level before
driving. This helps clear the
intake ducts of snow and
moisture, and reduces the
chance of fogging the inside of
the window.
. Keep the air path under the front
seats clear of objects to help
circulate the air inside of the
vehicle more effectively.
. Use of non-GM approved hood
deflectors can adversely affect
the performance of the system.
Check with your dealer before
adding equipment to the outside
of the vehicle.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
Climate Controls 197
Maintenance
Passenger Compartment
Air Filter
The filter reduces the dust, pollen,
and other airborne irritants from
outside air that is pulled into the
vehicle.
The filter should be replaced as part
of routine scheduled maintenance.
SeeMaintenance Schedule 0375.
To find out what type of filter to use,
see Maintenance Replacement
Parts 0385.
1. Open the glove box completely. 2. Disconnect the glove box door
damper string from the glove
box door assembly. A pen or
pencil may be inserted through
the end of the damper string to
prevent the string from slipping
inside the door assembly.
3. Remove the six screws and
remove the access plate.
4. Release the two tabs holdingthe service door. Open the
service door and remove the
old filter.
5. Install the new air filter.
6. Close the service door and secure the tabs.
7. Reverse the steps to reinstall the glove box.
See your dealer if additional
assistance is needed.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
198 Climate Controls
Service
All vehicles have a label underhood
that identifies the refrigerant used in
the vehicle. The refrigerant system
should only be serviced by trained
and certified technicians. The air
conditioning evaporator should
never be repaired or replaced by
one from a salvage vehicle.
It should only be replaced by a new
evaporator to ensure proper and
safe operation.
During service, all refrigerants
should be reclaimed with proper
equipment. Venting refrigerants
directly to the atmosphere is harmful
to the environment and may also
create unsafe conditions based on
inhalation, combustion, frostbite,
or other health-based concerns.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
200 Driving and Operating
Filling the Tank . . . . . . . . . . . . . . . 265
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 267
Trailer Towing
General TowingInformation . . . . . . . . . . . . . . . . . . 268
Driving Characteristics and Towing Tips . . . . . . . . . . . . . . . . . 268
Trailer Towing . . . . . . . . . . . . . . . . 271
Towing Equipment . . . . . . . . . . . . 274
Trailer Sway Control (TSC) . . . 281
Conversions and Add-Ons
Add-On Electrical Equipment . . . . . . . . . . . . . . . . . . 282
Driving Information
Distracted Driving
Distraction comes in many forms
and can take your focus from the
task of driving. Exercise good
judgment and do not let other
activities divert your attention away
from the road. Many local
governments have enacted laws
regarding driver distraction. Become
familiar with the local laws in
your area.
To avoid distracted driving, keep
your eyes on the road, keep your
hands on the steering wheel, and
focus your attention on driving.
. Do not use a phone in
demanding driving situations.
Use a hands-free method to
place or receive necessary
phone calls.
. Watch the road. Do not read,
take notes, or look up
information on phones or other
electronic devices. .
Designate a front seat
passenger to handle potential
distractions.
. Become familiar with vehicle
features before driving, such as
programming favorite radio
stations and adjusting climate
control and seat settings.
Program all trip information into
any navigation device prior to
driving.
. Wait until the vehicle is parked
to retrieve items that have fallen
to the floor.
. Stop or park the vehicle to tend
to children.
. Keep pets in an appropriate
carrier or restraint.
. Avoid stressful conversations
while driving, whether with a
passenger or on a cell phone.
{Warning
Taking your eyes off the road too
long or too often could cause a
crash resulting in injury or death.
Focus your attention on driving.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
210 Driving and Operating
clear roads in shaded areas.
The surface of a curve or an
overpass can remain icy when
the surrounding roads are clear.
Avoid sudden steering
maneuvers and braking while
on ice.
. Turn off cruise control.
Blizzard Conditions
Stop the vehicle in a safe place and
signal for help. Stay with the vehicle
unless there is help nearby.
If possible, use Roadside
Assistance. See Roadside
Assistance Program 0395. To get
help and keep everyone in the
vehicle safe:
. Turn on the hazard warning
flashers.
. Tie a red cloth to an outside
mirror.
{Warning
Snow can trap engine exhaust
under the vehicle. This may
cause exhaust gases to get
inside. Engine exhaust contains
carbon monoxide (CO), which
cannot be seen or smelled. It can
cause unconsciousness and even
death.
If the vehicle is stuck in snow:
. Clear snow from the base of
the vehicle, especially any
blocking the exhaust pipe.
. Open a window about 5 cm
(2 in) on the vehicle side
that is away from the wind,
to bring in fresh air.
. Fully open the air outlets on
or under the instrument
panel.
. Adjust the climate control
system to circulate the air
inside the vehicle and set
(Continued)
Warning (Continued)
the fan speed to the highest
setting. See“Climate
Control Systems.”
For more information about CO,
see Engine Exhaust 0226.
To save fuel, run the engine for
short periods to warm the vehicle
and then shut the engine off and
partially close the window. Moving
about to keep warm also helps.
If it takes time for help to arrive,
when running the engine, push the
accelerator pedal slightly so the
engine runs faster than the idle
speed. This keeps the battery
charged to restart the vehicle and to
signal for help with the headlamps.
Do this as little as possible, to
save fuel.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
268 Driving and Operating
Trailer Towing
General Towing
Information
Only use towing equipment that has
been designed for the vehicle.
Contact your dealer or trailering
dealer for assistance with preparing
the vehicle for towing a trailer. Read
the entire section before towing a
trailer.
For towing a disabled vehicle, see
Towing the Vehicle0360. For
towing the vehicle behind another
vehicle such as a motor home, see
Recreational Vehicle Towing 0361.
Driving Characteristics
and Towing Tips
Driving with a Trailer
When towing a trailer:
.
Become familiar with the state
and local laws that apply to
trailer towing. .
The trailer must be equipped
with brakes adequate for the
intended use. A loaded trailer
weighing more than 900 kg
(2,000 lb) must be equipped with
its own brake system, with
brakes working on all axles.
Trailer braking equipment
conforming to Canadian
Standards Association (CSA)
requirement CAN3-D313, or its
equivalent, is recommended.
. Do not tow a trailer during the
first 800 km (500 mi) to prevent
damage to the engine, axle,
or other parts.
. Then during the first 800 km
(500 mi) of trailer towing, do not
drive over 80 km/h (50 mph) and
do not make starts at full throttle.
. Vehicles can tow in D (Drive).
Shift the transmission to a lower
gear if the transmission shifts
too often under heavy loads and/
or hilly conditions.
. Do not use Adaptive Cruise
Control when towing. .
Turn off Parking Assist when
towing.
. The Forward Automatic Braking
System should be set to Off
when towing. See Forward
Automatic Braking (FAB) 021.
{Warning
When towing a trailer, exhaust
gases may collect at the rear of
the vehicle and enter if the
liftgate, trunk/hatch, or rear-most
window is open.
When towing a trailer:
. Do not drive with the
liftgate, trunk/hatch,
or rear-most window open.
. Fully open the air outlets on
or under the instrument
panel.
. Also adjust the climate
control system to a setting
that brings in only outside
air. See “Climate Control
Systems” in the Index.
(Continued)

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
Vehicle Care 343
{Warning
If different sized wheels are used,
there may not be an acceptable
level of performance and safety if
tires not recommended for those
wheels are selected. This
increases the chance of a crash
and serious injury. Only use GM
specific wheel and tire systems
developed for the vehicle, and
have them properly installed by a
GM certified technician.
See Buying New Tires 0341 and
Accessories and
Modifications 0285.
Uniform Tire Quality
Grading
The following information relates
to the system developed by the
United States National Highway
Traffic Safety Administration
(NHTSA), which grades tires by
treadwear, traction, and
temperature performance. This applies only to vehicles sold in
the United States. The grades
are molded on the sidewalls of
most passenger car tires. The
Uniform Tire Quality Grading
(UTQG) system does not apply
to deep tread, winter tires,
compact spare tires, tires with
nominal rim diameters of
10 to 12 inches (25 to 30 cm),
or to some limited-production
tires.
While the tires available on
General Motors passenger cars
and light trucks may vary with
respect to these grades, they
must also conform to federal
safety requirements and
additional General Motors Tire
Performance Criteria (TPC)
standards.
Quality grades can be found
where applicable on the tire
sidewall between tread shoulder
and maximum section width. For
example:
Treadwear 200 Traction AA
Temperature A
All Passenger Car Tires Must
Conform to Federal Safety
Requirements In Addition To
These Grades.
Treadwear
The treadwear grade is a
comparative rating based on the
wear rate of the tire when tested
under controlled conditions on a
specified government test
course. For example, a tire
graded 150 would wear one and
one-half (1½) times as well on
the government course as a tire
graded 100. The relative
performance of tires depends
upon the actual conditions of
their use, however, and may
depart significantly from the
norm due to variations in driving
habits, service practices and
differences in road
characteristics and climate.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
Index 417
Child RestraintsInfants and Young Children . . . 100
Lower Anchors and Tethers
for Children . . . . . . . . . . . . . . . . . 105
Older Children . . . . . . . . . . . . . . . . . . 98
Securing . . . . . . . . . . . . . . . . . .113, 116
Systems . . . . . . . . . . . . . . . . . . . . . . 102
Child-View Mirror . . . . . . . . . . . . . . . . 57
Cleaning Exterior Care . . . . . . . . . . . . . . . . . 365
Interior Care . . . . . . . . . . . . . . . . . . 369
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . 191
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Cluster, Instrument . . . . . . . . . . . . . 134
Collision Damage Repair . . . . . . . 398
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . 120
Compass . . . . . . . . . . . . . . . . . . . . . . . 128 Messages . . . . . . . . . . . . . . . . . . . . 159
Connections OnStar
®. . . . . . . . . . . . . . . . . . . . . . 407
Control Traction and Electronic
Stability . . . . . . . . . . . . . . . . . . . . . 239
Control of a Vehicle . . . . . . . . . . . . . 201
Convenience Net . . . . . . . . . . . . . . . 122 Convex Mirrors . . . . . . . . . . . . . . . . . . 54
Coolant
Engine . . . . . . . . . . . . . . . . . . . . . . . . 299
Engine Temperature Gauge . . 139
Engine TemperatureWarning Light . . . . . . . . . . . . . . . 148
Cooling . . . . . . . . . . . . . . . . . . . . 191, 195
Cooling System . . . . . . . . . . . . . . . . . 298
Engine Messages . . . . . . . . . . . . 161
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . 397
Cruise Control . . . . . . . . . . . . . . . . . . 242 Light . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Messages . . . . . . . . . . . . . . . . . . . . 159
Cruise Control, Adaptive . . . . . . . . 244
Cupholders . . . . . . . . . . . . . . . . . . . . . 120
Customer Assistance . . . . . . . . . . . 394 Offices . . . . . . . . . . . . . . . . . . . . . . . . 393
Text Telephone (TTY)Users . . . . . . . . . . . . . . . . . . . . . . . 394
Customer Information
Service PublicationsOrdering Information . . . . . . . . 400
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . 391
D
Damage Repair, Collision . . . . . . . 398
Danger, Warning, and Caution . . . . 2
Data CollectionInfotainment System . . . . . . . . . . 404
OnStar . . . . . . . . . . . . . . . . . . . . . . . 403
Data Recorders, Event . . . . . . . . . 403
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 184
Defensive Driving . . . . . . . . . . . . . . . 201
Delayed Locking . . . . . . . . . . . . . . . . . 43
Diagnostics
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 409
Distracted Driving . . . . . . . . . . . . . . . 200
Dome Lamps . . . . . . . . . . . . . . . . . . . 187
Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . 151
Ajar Messages . . . . . . . . . . . . . . . 160
Delayed Locking . . . . . . . . . . . . . . . . 43
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Power Locks . . . . . . . . . . . . . . . . . . . . 42
Drive Belt Routing, Engine . . . . . . 390
Driver Assistance Systems . . . . . 251
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . 152
Driving Assistance Systems . . . . . . . . . . 255

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
418 Index
Driving (cont'd)Characteristics and
Towing Tips . . . . . . . . . . . . . . . . . 268
Defensive . . . . . . . . . . . . . . . . . . . . . 201
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 201
For Better Fuel Economy . . . . . . . 26
Hill and Mountain Roads . . . . . . 209
If the Vehicle is Stuck . . . . . . . . . .211
Loss of Control . . . . . . . . . . . . . . . 203
Off-Road . . . . . . . . . . . . . . . . . . . . . 203
Off-Road Recovery . . . . . . . . . . . 202
Vehicle Load Limits . . . . . . . . . . . 212
Wet Roads . . . . . . . . . . . . . . . . . . . 208
Winter . . . . . . . . . . . . . . . . . . . . . . . . 209
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 191
E
E85 or FlexFuel . . . . . . . . . . . . . . . . 265
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 282
Electrical System Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 316
Fuses . . . . . . . . . . . . . . . . . . . . . . . . 316
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . 320, 323
Overload . . . . . . . . . . . . . . . . . . . . . 315 Electrical System (cont'd)
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 325
Emergency
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 406
Engine Air Cleaner/Filter . . . . . . . . . . . . . 297
Check and Service EngineSoon Light . . . . . . . . . . . . . . . . . . 144
Compartment Overview . . . . . . . 287
Coolant . . . . . . . . . . . . . . . . . . . . . . . 299
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 139
Coolant Temperature
Warning Light . . . . . . . . . . . . . . . 148
Cooling System . . . . . . . . . . . . . . . 298
Cooling System Messages . . . 161
Drive Belt Routing . . . . . . . . . . . . 390
Exhaust . . . . . . . . . . . . . . . . . . . . . . 226
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
Heater . . . . . . . . . . . . . . . . . . . . . . . . 222
Oil Life System . . . . . . . . . . . . . . . 292
Oil Messages . . . . . . . . . . . . . . . . . 161
Oil Pressure Gauge . . . . . . . . . . 138
Oil Pressure Light . . . . . . . . . . . . 149
Overheating . . . . . . . . . . . . . . . . . . 301
Power Messages . . . . . . . . . . . . . 162
Running While Parked . . . . . . . . 227 Engine (cont'd)
Starting . . . . . . . . . . . . . . . . . . . . . . . 220
Entry Lighting . . . . . . . . . . . . . . . . . . . 188
Equipment, Towing . . . . . . . . . . . . . 274
Event Data Recorders . . . . . . . . . . 403
Exit Lighting . . . . . . . . . . . . . . . . . . . . 188
Extended Parking . . . . . . . . . . . . . . . 226
Extender, Safety Belt . . . . . . . . . . . . 84
Exterior Lamp Controls . . . . . . . . . 181
Exterior Lamps Off Reminder . . . 183
F
Fan Engine . . . . . . . . . . . . . . . . . . . . . . . . 303
Features Memory . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filter, Engine Air Cleaner . . . . . . . . . . . 297
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 183
Flashers, Hazard Warning . . . . . . 185
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 346
Changing . . . . . . . . . . . . . . . . . . . . . 347
FlexFuel E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 373
Fluid AutomaticTransmission . . . . . . . . . . . 293, 296
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 305