roof GMC YUKON XL 2018 Owner's Manual

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/21/17
Driving and Operating 193.
Read all the information about
four-wheel-drive vehicles in this
manual.
.
Remove any underbody air
deflector, if equipped. Re-attach
the air deflector after off-road
driving.
.
Know the local laws that apply to
off-road driving.
To gain more ground clearance if
needed, it may be necessary to
remove the front fascia lower air
dam, if equipped. However, driving
without the air dam reduces fuel
economy.
Caution
Operating the vehicle for
extended periods without the front
fascia lower air dam installed can
cause improper airflow to the
engine. Reattach the front fascia
air dam after off-road driving. Loading the Vehicle for
Off-Road Driving
{ Warning.
Unsecured cargo on the
load floor can be tossed
about when driving over
rough terrain. You or your
passengers can be struck
by flying objects. Secure the
cargo properly.
.
Keep cargo in the cargo
area as far forward and as
low as possible. The
heaviest things should be
on the floor, forward of the
rear axle.
.
Heavy loads on the roof
raise the vehicle's center of
gravity, making it more likely
to roll over. You can be
seriously or fatally injured if
the vehicle rolls over. Put
heavy loads inside the
cargo area, not on the roof. For more information about loading
the vehicle, see Vehicle Load Limits
0 200 and Tires 0 320 .
Environmental Concerns .
Always use established trails,
roads, and areas that have been
set aside for public off-road
recreational driving and obey all
posted regulations.
.
Do not damage shrubs, flowers,
trees, or grasses or disturb
wildlife.
.
Do not park over things that
burn. See Parking over Things
That Burn 0 214 .
Driving on Hills Driving safely on hills requires good
judgment and an understanding of
what the vehicle can and cannot do.
{ Warning
Many hills are simply too steep
for any vehicle. Driving up hills
can cause the vehicle to stall.
Driving down hills can cause loss
(Continued)

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/21/17
Driving and Operating 211thermostat in the plug end of the
cord, which will prevent engine
heater operation at temperatures
above − 18 °C (0 °F).
To Use the Engine Heater 1. Turn off the engine.
2. Open the hood and unwrap the
electrical cord. The cord is by
the left front fender, next to the
engine compartment fuse
block.
Check the heater cord for
damage. If it is damaged, do
not use it. See your dealer for
a replacement. Inspect the
cord for damage yearly.
3. Plug the cord into a normal,
grounded 110-volt AC outlet. { WarningImproper use of the heater cord
or an extension cord can damage
the cord and may result in
overheating and fire.
.
Plug the cord into a
three-prong electrical utility
receptacle that is protected
by a ground fault detection
function. An ungrounded
outlet could cause an
electric shock.
.
Use a weatherproof,
heavy-duty, 15 amp-rated
extension cord if needed.
Failure to use the
recommended extension
cord in good operating
condition, or using a
damaged heater or
extension cord, could make
(Continued) Warning (Continued) it overheat and cause a fire,
property damage, electric
shock, and injury.
.
Do not operate the vehicle
with the heater cord
permanently attached to the
vehicle. Possible heater
cord and thermostat
damage could occur.
.
While in use, do not let the
heater cord touch vehicle
parts or sharp edges. Never
close the hood on the
heater cord.
.
Before starting the vehicle,
unplug the cord, reattach
the cover to the plug, and
securely fasten the cord.
Keep the cord away from
any moving parts.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/21/17
212 Driving and Operating 4. Before starting the engine, be
sure to unplug and store the
cord as it was before to keep it
away from moving engine
parts. If you do not, it could be
damaged.
The length of time the heater should
remain plugged in depends on
several factors. Ask a dealer in the
area where you will be parking the
vehicle for the best advice on this.
Retained Accessory
Power (RAP) Some vehicle accessories may be
used after the ignition is turned off.
The power windows and sunroof,
if equipped, will continue to work for
up to 10 minutes or until any door is
opened.
The infotainment system will
continue to work for 10 minutes,
until the driver door is opened,
or until the ignition is turned on or
placed in ACC/ACCESSORY. Shifting Into Park
{ WarningIt can be dangerous to get out of
the vehicle if the shift lever is not
fully in P (Park) with the parking
brake firmly set. The vehicle can
roll. If you have left the engine
running, the vehicle can move
suddenly. You or others could be
injured. To be sure the vehicle will
not move, even when you are on
fairly level ground, use the steps
that follow. If the vehicle has a
four-wheel-drive transfer case
with a N (Neutral) position, and
the transfer case is in N (Neutral),
the vehicle will be free to roll,
even if the shift lever is in
P (Park). Be sure the transfer
case is in a drive gear. If towing a
trailer, see Driving Characteristics
and Towing Tips 0 259 .
1. Hold the brake pedal down,
then set the parking brake. See
Parking Brake 0 228 . 2. Move the shift lever into the
P (Park) position by pulling the
shift lever toward you and
moving it up as far as it will go.
3. Be sure the transfer case is in
a drive gear – not in
N (Neutral).
4. Turn the ignition off.
Leaving the Vehicle with the
Engine Running
{ WarningIt can be dangerous to leave the
vehicle with the engine running.
The vehicle could move suddenly
if the shift lever is not fully in
P (Park) with the parking brake
firmly set.
If you have four-wheel drive and
the transfer case is in N (Neutral),
the vehicle will be free to roll,
even if the shift lever is in
P (Park). So be sure the transfer
case is in a drive gear – not in
N (Neutral).
(Continued)

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
318 Vehicle Care Fuses Usage
3 –
4 Accessory power
outlet 4
5 –
6 –
7 –
8 Glove box
9 –
10 –
11 –
12 Steering wheel
controls
13 Body control module 8
14 –
15 –
16 –
17 –
18 –
19 Body control module 4
20 Rear seat
entertainment Fuses Usage
21 Sunroof
22 –
23 –
24 –
25 –
26 Infotainment/Airbag
27 – /RF window switch/
Rain sensor
28 Obstacle
detection/USB
29 Radio
30 –
31 –
32 –
33 –
34 –
35 –
36 Special equipment
option B2
37 Special equipment
option Fuses Usage
38 Body control module 2
39 Air conditioning
inverter
40 –
41 –
42 –
43 –
44 Right door window
motor
45 Front blower
46 Body control module 6
47 Body control module 7
48 Amplifier
49 Right front seat
50 Accessory power
outlet 3
51 –
53 –
54 –
55 –
56 –

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
372 Service and Maintenance .
Check automatic transmission
shift lock control function. See
Automatic Transmission Shift
Lock Control Function Check
0 302 .
.
Check ignition transmission lock.
See Ignition Transmission Lock
Check 0 303 .
.
Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism Check
0 303 .
.
Check accelerator pedal for
damage, high effort, or binding.
Replace if needed.
.
Visually inspect gas strut for
signs of wear, cracks, or other
damage. Check the hold open
ability of the strut. If the hold
open is low, service the gas
strut. See Gas Strut(s) 0 305 .
.
Inspect sunroof track and seal,
if equipped. See Sunroof 0 58 .
.
Verify spare tire key lock
operation and lubricate as
needed. See Tire Changing
0 342 .

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

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/21/17
Index 421Service (cont'd)
Publications Ordering
Information . . . . . . . . . . . . . . . . . . 395
Scheduling Appointments . . . . . 392
Services
Special Application . . . . . . . . . . . 376
Servicing the Airbag . . . . . . . . . . . . . 95
Shift Lock Control Function
Check, Automatic
Transmission . . . . . . . . . . . . . . . . . . 302
Shifting
Into Park . . . . . . . . . . . . . . . . . . . . . . 212
Out of Park . . . . . . . . . . . . . . . . . . . 213
Side Blind Zone Alert (SBZA) . . . 250
Signals, Turn and
Lane-Change . . . . . . . . . . . . . . . . . 174
Special Application Services . . . . 376
Specifications and
Capacities . . . . . . . . . . . . . . . . . . . . . 384
Speedometer . . . . . . . . . . . . . . . . . . . 136
StabiliTrak
OFF Light . . . . . . . . . . . . . . . . . . . . . 147
Start Assist, Hill . . . . . . . . . . . . . . . . . 229
Start Vehicle, Remote . . . . . . . . . . . 39
Starter Switch Check . . . . . . . . . . . 302
Starting the Engine . . . . . . . . . . . . . 209
Steering . . . . . . . . . . . . . . . . . . . . . . . . 191
Heated Wheel . . . . . . . . . . . . . . . . 123 Steering (cont'd)
Wheel Adjustment . . . . . . . . . . . . 123
Wheel Controls . . . . . . . . . . . . . . . 123
Steps
Power Assist . . . . . . . . . . . . . . . . . . . 48
Storage
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . .119
Storage Areas
Armrest . . . . . . . . . . . . . . . . . . . . . . . .119
Center Console . . . . . . . . . . . . . . . 120
Convenience Net . . . . . . . . . . . . . 120
Glove Box . . . . . . . . . . . . . . . . . . . . .118
Instrument Panel . . . . . . . . . . . . . .118
Roof Rack System . . . . . . . . . . . . 120
Sunglasses . . . . . . . . . . . . . . . . . . . .119
Storage Compartments . . . . . . . . . 118
Struts
Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Stuck Vehicle . . . . . . . . . . . . . . . . . . . 200
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . 58
Sunglass Storage . . . . . . . . . . . . . . . 119
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System
Forward Collision
Alert (FCA) . . . . . . . . . . . . . . . . . . 246
Infotainment . . . . . . . . . . . . . 179, 399
Noise Control . . . . . . . . . . . . . . . . . 301 System (cont'd)
Roof Rack . . . . . . . . . . . . . . . . . . . . 120
Systems
Driver Assistance . . . . . . . . . . . . . 242
T Tachometer . . . . . . . . . . . . . . . . . . . . . 136
Text Telephone (TTY) Users . . . . 389
Theft-Deterrent Systems . . . . . . . . . 51
Immobilizer . . . . . . . . . . . . . . . . . . . . . 51
Third-Row Seats . . . . . . . . . . . . . . . . . 74
Throttle, Adjustable . . . . . . . . . . . . . 205
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
All-Season . . . . . . . . . . . . . . . . . . . . 321
All-Terrain . . . . . . . . . . . . . . . . . . . . 322
Buying New Tires . . . . . . . . . . . . . 335
Chains . . . . . . . . . . . . . . . . . . . . . . . . 340
Changing . . . . . . . . . . . . . . . . . . . . . 342
Designations . . . . . . . . . . . . . . . . . 324
Different Size . . . . . . . . . . . . . . . . . 337
Full-Size Spare . . . . . . . . . . . . . . . 350
If a Tire Goes Flat . . . . . . . . . . . . 341
Inspection . . . . . . . . . . . . . . . . . . . . 333
Low Profile . . . . . . . . . . . . . . . . . . . 322
Pressure . . . . . . . . . . . . . . . . . 327, 328
Pressure Light . . . . . . . . . . . . . . . . 148
Pressure Monitor Operation . . 330
Pressure Monitor System . . . . . 329