2018 GMC YUKON XL keyless

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/21/17
210 Driving and Operating Operate the engine and
transmission gently until the oil
warms up and lubricates all
moving parts.
Starting Procedure (Keyless
Access) 1. With the Keyless Access
system, the RKE transmitter
must be in the vehicle. Press
ENGINE START/STOP with the
brake pedal applied. When the
engine begins cranking, let go
of the button.
The idle speed will go down as
the engine gets warm. Do not
race the engine immediately
after starting it.
If the RKE transmitter is not in
the vehicle, if there is
interference, or if the RKE
battery is low, the Driver
Information Center (DIC) will
display a message. CautionCranking the engine for long
periods of time, by returning the
ignition to the START position
immediately after cranking has
ended, can overheat and damage
the cranking motor, and drain the
battery. Wait at least 15 seconds
between each try, to let the
cranking motor cool down.
2. If the engine does not start
after five to 10 seconds,
especially in very cold weather
(below − 18 °C or 0 °F), it could
be flooded with too much
gasoline. Try pushing the
accelerator pedal all the way to
the floor and holding it there as
you press ENGINE START/
STOP, for up to a maximum of
15 seconds. Wait at least
15 seconds between each try,
to allow the cranking motor to
cool down. When the engine
starts, let go of the button, and
the accelerator. If the vehicle
starts briefly but then stops again, do the same thing. This
clears the extra gasoline from
the engine. Do not race the
engine immediately after
starting it. Operate the engine
and transmission gently until
the oil warms up and lubricates
all moving parts.
Engine Heater
{ WarningDo not plug in the engine block
heater while the vehicle is parked
in a garage or under a carport.
Property damage or personal
injury may result. Always park the
vehicle in a clear open area away
from buildings or structures.
If equipped, the engine heater can
provide easier starting and better
fuel economy during engine
warm-up in cold weather conditions
at or below − 18 °C (0 °F). Vehicles
with an engine heater should be
plugged in at least four hours before
starting. There may be an internal

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/21/17
214 Driving and Operating
Parking over Things
That Burn
{ WarningThings that can burn could touch
hot exhaust parts under the
vehicle and ignite. Do not park
over papers, leaves, dry grass,
or other things that can burn.
Active Fuel Management Vehicles with V8 engines may have
Active Fuel Management. This
system allows the engine to operate
on either all or half of its cylinders,
depending on the driving conditions.
When less power is required, such
as cruising at a constant vehicle
speed, the system will operate in
the half cylinder mode, allowing the
vehicle to achieve better fuel
economy. When greater power
demands are required, such as
accelerating from a stop, passing,
or merging onto a freeway, the
system will maintain full-cylinder
operation. If the vehicle has an Active Fuel
Management indicator, see Driver
Information Center (DIC) 0 151 for
more information on using this
display.
Extended Parking It is better not to park with the
vehicle running. If the vehicle is left
while running, follow the proper
steps to be sure the vehicle will not
move and there is adequate
ventilation.
See Shifting Into Park 0 212 and
Engine Exhaust 0 215 .
For vehicles with pushbutton start,
if the vehicle is left parked while
running and the Remote Keyless
Entry (RKE) transmitter is outside
the vehicle, the vehicle will turn off
after one hour.
If the vehicle is left parked while
running and the RKE transmitter is
inside, the vehicle will turn off after
two hours.
Vehicles without pushbutton start
will run indefinitely, or until the
ignition is turned off. Automatic Transmission
The timer will reset if the vehicle is
shifted out of P (Park) while it is
running.
Manual Transmission
The timer will reset if the vehicle
speed is greater than 4 km/h
(2.5 mph).

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
278 Vehicle Care
California Perchlorate
Materials Requirements Certain types of automotive
applications, such as airbag
initiators, seat belt pretensioners,
and lithium batteries contained in
Remote Keyless Entry transmitters,
may contain perchlorate materials.
Special handling may be necessary.
For additional information, see
www.dtsc.ca.gov/hazardouswaste/
perchlorate.
Accessories and
Modifications Adding non-dealer accessories or
making modifications to the vehicle
can affect vehicle performance and
safety, including such things as
airbags, braking, stability, ride and
handling, emissions systems,
aerodynamics, durability, and
electronic systems like antilock
brakes, traction control, and stability
control. These accessories or
modifications could even cause
malfunction or damage not covered
by the vehicle warranty. Damage to suspension components
caused by modifying vehicle height
outside of factory settings will not be
covered by the vehicle warranty.
Damage to vehicle components
resulting from modifications or the
installation or use of non-GM
certified parts, including control
module or software modifications, is
not covered under the terms of the
vehicle warranty and may affect
remaining warranty coverage for
affected parts.
GM Accessories are designed to
complement and function with other
systems on the vehicle. See your
dealer to accessorize the vehicle
using genuine GM Accessories
installed by a dealer technician.
Also, see Adding Equipment to the
Airbag-Equipped Vehicle 0 95 .Vehicle Checks Doing Your Own
Service Work
{ WarningIt can be dangerous to work on
your vehicle if you do not have
the proper knowledge, service
manual, tools, or parts. Always
follow owner ’ s manual procedures
and consult the service manual
for your vehicle before doing any
service work.
If doing some of your own service
work, use the proper service
manual. It tells you much more
about how to service the vehicle
than this manual can. To order the
proper service manual, see Service
Publications Ordering Information
0 395 .
This vehicle has an airbag system.
Before attempting to do your own
service work, see Servicing the
Airbag-Equipped Vehicle 0 95 .

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
Vehicle Care 333There are two minutes to match the
first tire/wheel position, and
five minutes overall to match all four
tire/wheel positions. If it takes
longer, the matching process stops
and must be restarted.
The TPMS sensor matching
process is:
1. Set the parking brake.
2. Turn the ignition on without
starting the vehicle or place the
vehicle in Service Mode.
See Ignition Positions (Key
Access) 0 207 or Ignition
Positions (Keyless Access)
0 205 .
3. Make sure the Tire Pressure
info page option is turned on.
The info pages on the DIC can
be turned on and off through
the Settings menu. See Driver
Information Center (DIC) 0 151 .
4. Use the DIC controls on the
right side of the steering wheel
to scroll to the Tire Pressure
screen under the DIC
info page. 5. Press and hold
V in the center
of the DIC controls.
The horn sounds twice to
signal the receiver is in relearn
mode and the TIRE
LEARNING ACTIVE message
displays on the DIC screen.
6. Start with the driver side
front tire.
7. Place the relearn tool against
the tire sidewall, near the valve
stem. Then press the button to
activate the TPMS sensor.
A horn chirp confirms that the
sensor identification code has
been matched to this tire and
wheel position.
8. Proceed to the passenger side
front tire, and repeat the
procedure in Step 7.
9. Proceed to the passenger side
rear tire, and repeat the
procedure in Step 7.
10. Proceed to the driver side rear
tire, and repeat the procedure
in Step 7. The horn sounds two
times to indicate the sensor
identification code has been matched to the driver side rear
tire, and the TPMS sensor
matching process is no longer
active. The TIRE LEARNING
ACTIVE message on the DIC
display screen goes off.
11. Turn the vehicle off.
12. Set all four tires to the
recommended air pressure
level as indicated on the Tire
and Loading Information label.
Tire Inspection We recommend that the tires,
including the spare tire, if the
vehicle has one, be inspected
for signs of wear or damage at
least once a month.
Replace the tire if: .
The indicators at three or
more places around the tire
can be seen.
.
There is cord or fabric
showing through the tire's
rubber.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
Vehicle Care 357To dinghy tow:
1. Position the vehicle being
towed behind the tow vehicle,
facing forward and on a level
surface.
2. Securely attach the vehicle
being towed to the tow vehicle.
3. Apply the parking brake and
start the engine.
4. Shift the transfer case to
N (Neutral). See “ Shifting into
N (Neutral) ” under Four-Wheel
Drive 0 222 . Check that the
vehicle is in N (Neutral) by
starting the engine and shifting
the transmission to
R (Reverse) and then to D
(Drive). There should be no
movement of the vehicle while
shifting.
5. Shift the transmission into
D (Drive). Turn the engine off. CautionFailure to disconnect the negative
battery cable or to have it contact
the terminals can cause damage
to the vehicle.
6. Disconnect the negative
battery cable at the battery and
secure the nut and bolt. Cover
the negative battery post with a
non-conductive material to
prevent any contact with the
negative battery terminal.
7. Shift the transmission to
P (Park).
Caution
If the steering column is locked,
vehicle damage may occur.
8. Move the steering wheel to
make sure the steering column
is unlocked.
9. With a foot on the brake pedal,
release the parking brake. 10. Keep the ignition key in the
towed vehicle in ACC/
ACCESSORY to prevent the
steering column from locking.
If equipped with Keyless
Access, keep the RKE
transmitter outside of the
vehicle, and manually lock the
doors. Access the vehicle as if
it has a dead RKE transmitter
battery, by using the key in the
door lock.
Disconnecting the Towed Vehicle
Before disconnecting the towed
vehicle:
1. Park on a level surface.
2. Set the parking brake, then
shift the transmission to
P (Park).
3. Connect the battery.
4. Apply the brake pedal.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/21/17
Index 417High-Beam On Light . . . . . . . . . . . . 149
High-Speed Operation . . . . . . . . . . 328
Hill and Mountain Roads . . . . . . . . 198
Hill Descent Control (HDC) . . . . . 231
Hill Start Assist (HSA) . . . . . . . . . . 229
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 279
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
How to Wear Seat Belts
Properly . . . . . . . . . . . . . . . . . . . . . . . . 77
HVAC . . . . . . . . . . . . . . . . . . . . . . 180, 184
I Ignition Positions . . . . . . . . . . 205, 207
Ignition Transmission Lock
Check . . . . . . . . . . . . . . . . . . . . . . . . . 303
Immobilizer . . . . . . . . . . . . . . . . . . . . . . 51
Indicator
Vehicle Ahead . . . . . . . . . . . . . . . . 146
Infants and Young Children,
Restraints . . . . . . . . . . . . . . . . . . . . . . 98
Infotainment . . . . . . . . . . . . . . . . . . . . 179
Infotainment System . . . . . . . . . . . . 399
Instrument Cluster . . . . . . . . . . . . . . 133
Instrument Panel
Storage Area . . . . . . . . . . . . . . . . . .118
Interior Rearview Mirrors . . . . . . . . . 55
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2 J Jump Starting - North
America . . . . . . . . . . . . . . . . . . . . . . . 351
K Keyless Entry
Remote (RKE) System . . . . . 31, 33
Keys . . . . . . . . . . . . . . . . . . . . . . . . . 27, 28
L Labeling, Tire Sidewall . . . . . . . . . . 322
Lamps
Daytime Running (DRL) . . . . . . 173
Dome . . . . . . . . . . . . . . . . . . . . . . . . . 176
Exterior Controls . . . . . . . . . . . . . . 170
Exterior Lamps Off
Reminder . . . . . . . . . . . . . . . . . . . 172
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . 178
License Plate . . . . . . . . . . . . . . . . . 308
Malfunction Indicator
(Check Engine) . . . . . . . . . . . . . 143
On Reminder . . . . . . . . . . . . . . . . . 150
Reading . . . . . . . . . . . . . . . . . . . . . . 176
Lane Change Alert (LCA) . . . . . . . 250
Lane Departure
Warning (LDW) . . . . . . . . . . . . . . . . 252
Lane Keep Assist (LKA) . . . . . . . . 252
Lane Keep Assist Light . . . . . . . . . 146 Lap Belt . . . . . . . . . . . . . . . . . . . . . . . . . 83
Lap-Shoulder Belt . . . . . . . . . . . . . . . 78
LATCH System
Replacing Parts after a
Crash . . . . . . . . . . . . . . . . . . . . . . . . 111
LATCH, Lower Anchors and
Tethers for Children . . . . . . . . . . . 104
LED Lighting . . . . . . . . . . . . . . . . . . . . 307
Level Control
Automatic . . . . . . . . . . . . . . . . . . . . . 232
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Lighting
Entry . . . . . . . . . . . . . . . . . . . . . . . . . 177
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Illumination Control . . . . . . . . . . . 176
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 307
Lights
Airbag Readiness . . . . . . . . . . . . . 141
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 145
Brake System Warning . . . . . . . 145
Charging System . . . . . . . . . . . . . 142
Check Engine (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 143
Cruise Control . . . . . . . . . . . . . . . . 150
Door Ajar . . . . . . . . . . . . . . . . . . . . . 150
Engine Coolant
Temperature Warning . . . . . . . 148

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/21/17
420 Index Reimbursement Program,
GM Mobility . . . . . . . . . . . . . . . . . . . 390
Remote Keyless Entry
(RKE) System . . . . . . . . . . . . . . 31, 33
Remote Vehicle Start . . . . . . . . . . . . 39
Replacement
Glass . . . . . . . . . . . . . . . . . . . . . . . . . 304
Replacement Parts
Airbags . . . . . . . . . . . . . . . . . . . . . . . . . 96
Maintenance . . . . . . . . . . . . . . . . . . 380
Replacing Airbag System . . . . . . . . 96
Replacing LATCH System
Parts after a Crash . . . . . . . . . . . . 111
Replacing Seat Belt System
Parts after a Crash . . . . . . . . . . . . . 84
Reporting Safety Defects
Canadian Government . . . . . . . . 397
General Motors . . . . . . . . . . . . . . . 397
U.S. Government . . . . . . . . . . . . . 396
Restraints
Where to Put . . . . . . . . . . . . . . . . . 102
Retained Accessory
Power (RAP) . . . . . . . . . . . . . . . . . . 212
Reverse Tilt Mirrors . . . . . . . . . . . . . . 55
Ride Control Systems
Magnetic . . . . . . . . . . . . . . . . . . . . . 232
Roads
Driving, Wet . . . . . . . . . . . . . . . . . . 197 Roadside Assistance
Program . . . . . . . . . . . . . . . . . . . . . . . 390
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . 58
Roof Rack System . . . . . . . . . . . . . . 120
Rotation, Tires . . . . . . . . . . . . . . . . . . 334
Routing, Engine Drive Belt . . . . . . 385
Running the Vehicle While
Parked . . . . . . . . . . . . . . . . . . . . . . . . 215
S Safety Defects Reporting
Canadian Government . . . . . . . . 397
General Motors . . . . . . . . . . . . . . . 397
U.S. Government . . . . . . . . . . . . . 396
Safety Locks . . . . . . . . . . . . . . . . . . . . . 43
Safety System Check . . . . . . . . . . . . 83
Scheduling Appointments . . . . . . . 392
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . 76
Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Extender . . . . . . . . . . . . . . . . . . . . . . . . 83
How to Wear Seat Belts
Properly . . . . . . . . . . . . . . . . . . . . . . . 77
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . . 83
Lap-Shoulder Belt . . . . . . . . . . . . . . 78
Reminders . . . . . . . . . . . . . . . . . . . . 140
Replacing after a Crash . . . . . . . . 84
Use During Pregnancy . . . . . . . . . . 82 Seats
Head Restraints . . . . . . . . . . . . . . . . 61
Heated and Ventilated Front . . . . 67
Heated, Rear . . . . . . . . . . . . . . . . . . . 69
Lumbar Adjustment, Front . . . . . . 63
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 64
Power Adjustment, Front . . . . . . . 62
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Reclining Seatbacks . . . . . . . . . . . . 63
Second Row . . . . . . . . . . . . . . . . . . . . 69
Third Row Seat . . . . . . . . . . . . . . . . . 74
Second Row Seats . . . . . . . . . . . . . . 69
Securing Child
Restraints . . . . . . . . . . . . . . . . 112, 114
Security
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 149
OnStar . . . . . . . . . . . . . . . . . . . . . . . 402
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 49
Vehicle Alarm . . . . . . . . . . . . . . . . . . . 49
Service . . . . . . . . . . . . . . . . . . . . . . . . . 187
Accessories and
Modifications . . . . . . . . . . . . . . . . 278
Doing Your Own Work . . . . . . . . 278
Maintenance Records . . . . . . . . 382
Maintenance, General
Information . . . . . . . . . . . . . . . . . . 369
Parts Identification Label . . . . . 383