heating GMC YUKON XL 2019 User Guide

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-12460267) - 2019 - crc - 9/11/18
Vehicle Care 295
Vehicle Care
General Information
General Information . . . . . . . . . . 296
California Proposition65 Warning . . . . . . . . . . . . . . . . . 296
California Perchlorate Materials Requirements . . . . . 297
Accessories and Modifications . . . . . . . . . . . . . . . . 297
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 297
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 298
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 299
Engine Oil . . . . . . . . . . . . . . . . . . . . 302
Engine Oil Life System . . . . . . . 304
Automatic Transmission Fluid (6-Speed Transmission) . . . . . 305
Automatic Transmission Fluid (10 Speed Transmission) . . . 308
Engine Air Cleaner/Filter . . . . . . 309
Cooling System . . . . . . . . . . . . . . 310
Engine Overheating . . . . . . . . . . 313
Engine Fan . . . . . . . . . . . . . . . . . . . 315
Washer Fluid . . . . . . . . . . . . . . . . . 315
Brakes . . . . . . . . . . . . . . . . . . . . . . . 316 Brake Fluid . . . . . . . . . . . . . . . . . . . 317
Battery - North America . . . . . . 318
Four-Wheel Drive . . . . . . . . . . . . . 318
Front Axle . . . . . . . . . . . . . . . . . . . . 319
Rear Axle . . . . . . . . . . . . . . . . . . . . 320
Noise Control System . . . . . . . . 320
Starter Switch Check . . . . . . . . . 321
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 322
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . . 322
Park Brake and P (Park) Mechanism Check . . . . . . . . . . 322
Wiper Blade Replacement . . . . 323
Glass Replacement . . . . . . . . . . 324
Windshield Replacement . . . . . 324
Gas Strut(s) . . . . . . . . . . . . . . . . . . 324
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 325
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 326
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . 326
LED Lighting . . . . . . . . . . . . . . . . . 326
Fog Lamps . . . . . . . . . . . . . . . . . . . 326
Back-Up Lamps . . . . . . . . . . . . . . 327
License Plate Lamp . . . . . . . . . . 328
Electrical System
Electrical System Overload . . . 329
Fuses and Circuit Breakers . . . 329
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 330
Instrument Panel Fuse Block
(Right) . . . . . . . . . . . . . . . . . . . . . . 334
Instrument Panel Fuse Block (Left) . . . . . . . . . . . . . . . . . 337
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 339
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 341
All-Season Tires . . . . . . . . . . . . . . 342
Winter Tires . . . . . . . . . . . . . . . . . . 342
Low-Profile Tires . . . . . . . . . . . . . 342
All-Terrain Tires . . . . . . . . . . . . . . . 343
Tire Sidewall Labeling . . . . . . . . 343
Tire Designations . . . . . . . . . . . . . 344
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 345
Tire Pressure . . . . . . . . . . . . . . . . . 348
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . 349
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 349
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 350
Tire Inspection . . . . . . . . . . . . . . . . 354

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-12460267) - 2019 - crc - 9/11/18
310 Vehicle Care
{Warning
Operating the engine with the air
cleaner/filter off can cause you or
others to be burned. Use caution
when working on the engine. Do
not start the engine or drive the
vehicle with the air cleaner/filter
off, as flames may be present if
the engine backfires.
Caution
If the air cleaner/filter is off, dirt
can easily get into the engine,
which could damage it. Always
have the air cleaner/filter in place
when driving.
Cooling System
The cooling system allows the
engine to maintain the correct
working temperature.
1. Coolant Surge Tank
2. Coolant Surge TankPressure Cap
3. Engine Electric Cooling Fan(s)
{Warning
An underhood electric fan can
start up even when the engine is
not running and can cause injury.
Keep hands, clothing, and tools
away from any underhood
electric fan.
{Warning
Do not touch heater or radiator
hoses, or other engine parts.
They can be very hot and can
burn you. Do not run the engine if
there is a leak; all coolant could
leak out. That could cause an
engine fire and can burn you. Fix
any leak before driving the
vehicle.
Engine Coolant
The cooling system in the vehicle is
filled with DEX-COOL engine
coolant. This coolant is designed to
remain in the vehicle for 5 years or
240 000 km (150,000 mi), whichever
occurs first.
The following explains the cooling
system and how to check and add
coolant when it is low. If there is a
problem with engine overheating,
see Engine Overheating 0313.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-12460267) - 2019 - crc - 9/11/18
Vehicle Care 313
Turn the pressure cap slowly
counterclockwise about one full
turn. If a hiss is heard, wait for
that to stop. A hiss means
there is still some pressure left.
2. Keep turning the pressure cap slowly, and remove it.
3. Fill the coolant surge tank with the proper mixture to the full
cold mark.
4. With the coolant surge tank pressure cap off, start the
engine and let it run until the
engine coolant temperature
gauge indicates approximately
90 °C (195 °F).
By this time, the coolant level
inside the coolant surge tank
may be lower. If the level is
lower, add more of the proper
mixture to the coolant surge
tank until the level reaches the
full cold mark.
5. Replace the pressure cap tightly. 6. Verify coolant level after the
engine is shut off and the
coolant is cold. If necessary,
repeat coolant fill procedure
Steps 1–6.
Caution
If the pressure cap is not tightly
installed, coolant loss and engine
damage may occur. Be sure the
cap is properly and tightly
secured.
Engine Overheating
Caution
Do not run the engine if there is a
leak in the engine cooling system.
This can cause a loss of all
coolant and can damage the
system and vehicle. Have any
leaks fixed right away.
The vehicle has several indicators
to warn of engine overheating. There is a coolant temperature
gauge in the vehicle's instrument
cluster. See
Engine Coolant
Temperature Gauge 0148.
In addition, there are ENGINE
OVERHEATED STOP ENGINE,
ENGINE OVERHEATED IDLE
ENGINE, and ENGINE POWER IS
REDUCED messages in the Driver
Information Center (DIC).
If the decision is made not to lift the
hood when this warning appears,
get service help right away. See
Roadside Assistance Program
0 415.
If the decision is made to lift the
hood, make sure the vehicle is
parked on a level surface.
Check to see if the engine cooling
fan(s) are running. If the engine is
overheating, the fans should be
running. If they are not, do not
continue to run the engine. Have the
vehicle serviced.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-12460267) - 2019 - crc - 9/11/18
340 Vehicle Care
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Fuses Usage
2 –
3 Right heated second row seat
4 Heated mirrors
5 Liftgate
6 Glass breakage
7 Liftglass
8 Liftgate module logic
9 Rear wiper
10 Rear heating, ventilation, and air
conditioning blower
11 Second row seat
12 Liftgate module
13 Third row seat
14 Rear accessory power outlet
15 Rear window defogger
19 Rear fog lamp (if equipped) Relays Usage
1 Rear window defogger
16 Liftgate
17 Liftglass
18 Rear fog lamp
20 Heated mirror

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-12460267) - 2019 - crc - 9/11/18
Vehicle Care 341
Wheels and Tires
Tires
Every new GM vehicle has
high-quality tires made by a
leading tire manufacturer. See
the warranty manual for
information regarding the tire
warranty and where to get
service. For additional
information refer to the tire
manufacturer.
{Warning
.Poorly maintained and
improperly used tires are
dangerous.
.Overloading the tires can
cause overheating as a
result of too much
flexing. There could be a
blowout and a serious
crash. SeeVehicle Load
Limits 0212.
(Continued)
Warning (Continued)
.Underinflated tires pose
the same danger as
overloaded tires. The
resulting crash could
cause serious injury.
Check all tires frequently
to maintain the
recommended pressure.
Tire pressure should be
checked when the tires
are cold.
.Overinflated tires are
more likely to be cut,
punctured, or broken by
a sudden impact —such
as when hitting a pothole.
Keep tires at the
recommended pressure.
.Worn or old tires can
cause a crash. If the
tread is badly worn,
replace them.
(Continued)
Warning (Continued)
.Replace any tires that
have been damaged by
impacts with potholes,
curbs, etc.
.Improperly repaired tires
can cause a crash. Only
the dealer or an
authorized tire service
center should repair,
replace, dismount, and
mount the tires.
.Do not spin the tires in
excess of 56 km/h
(35 mph) on slippery
surfaces such as snow,
mud, ice, etc. Excessive
spinning may cause the
tires to explode.
See Tire Pressure for
High-Speed Operation 0349 for
inflation pressure adjustment for
high-speed driving.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-12460267) - 2019 - crc - 9/11/18
348 Vehicle Care
Tire Pressure
Tires need the correct amount of
air pressure to operate
effectively.
{Warning
Neither tire underinflation nor
overinflation is good.
Underinflated tires, or tires
that do not have enough air,
can result in:
.Tire overloading and
overheating which could
lead to a blowout.
.Premature or
irregular wear.
.Poor handling.
.Reduced fuel economy.
Overinflated tires, or tires that
have too much air, can
result in:
.Unusual wear.
(Continued)
Warning (Continued)
.Poor handling.
.Rough ride.
.Needless damage from
road hazards.
The Tire and Loading
Information label on the vehicle
indicates the original equipment
tires and the correct cold tire
inflation pressures. The
recommended pressure is the
minimum air pressure needed to
support the vehicle's maximum
load carrying capacity.
For additional information
regarding how much weight the
vehicle can carry, and an
example of the Tire and Loading
Information label, see Vehicle
Load Limits 0212. How the
vehicle is loaded affects vehicle
handling and ride comfort. Never load the vehicle with more
weight than it was designed to
carry.
When to Check
Check the pressure of the tires
once a month or more.
Do not forget the spare tire,
if the vehicle has one. See
Full-Size Spare Tire
0373 for
additional information.
How to Check
Use a good quality pocket-type
gauge to check tire pressure.
Proper tire inflation cannot be
determined by looking at the tire.
Check the tire inflation pressure
when the tires are cold, meaning
the vehicle has not been driven
for at least three hours or no
more than 1.6 km (1 mi).
Remove the valve cap from the
tire valve stem. Press the tire
gauge firmly onto the valve to
get a pressure measurement.
If the cold tire inflation pressure

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./Cana-
da/Mexico-12460267) - 2019 - crc - 9/11/18
440 Index
Driver InformationCenter (DIC) . . . . . . . . . . . . . . . . . . 161
Driving Assistance Systems . . . . . . . . . . 260
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . 273
Defensive . . . . . . . . . . . . . . . . . . . . . 201
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 201
For Better Fuel Economy . . . . . . . 27
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 . . . . . . . . . . . . . . . . 270
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 294
Electrical System Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 330
Fuses and Circuit Breakers . . . 329 Electrical System (cont'd)
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . 334, 337
Overload . . . . . . . . . . . . . . . . . . . . . 329
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 339
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . 426
Engine
Air Cleaner/Filter . . . . . . . . . . . . . 309
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 153
Compartment Overview . . . . . . . 299
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 148
Coolant Temperature Warning Light . . . . . . . . . . . . . . . 158
Cooling System . . . . . . . . . . . . . . . 310
Drive Belt Routing . . . . . . . . . . . . 410
Exhaust . . . . . . . . . . . . . . . . . . . . . . 227
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Heater . . . . . . . . . . . . . . . . . . . . . . . . 223
Oil Life System . . . . . . . . . . . . . . . 304
Oil Pressure Gauge . . . . . . . . . . 147
Oil Pressure Light . . . . . . . . . . . . 159
Overheating . . . . . . . . . . . . . . . . . . 313
Power Messages . . . . . . . . . . . . . 168
Running While Parked . . . . . . . . 228 Engine (cont'd)
Starting . . . . . . . . . . . . . . . . . . . . . . . 221
Entry Lighting . . . . . . . . . . . . . . . . . . . 188
Equipment, Towing . . . . . . . . . . . . . 284
Event Data Recorders . . . . . . . . . . 423
Exit Lighting . . . . . . . . . . . . . . . . . . . . 188
Extended Parking . . . . . . . . . . . . . . . 226
Extender, Seat Belt . . . . . . . . . . . . . . 90
Exterior Lamp Controls . . . . . . . . . 181
Exterior Lamps Off Reminder . . . 183
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . . . 189
F
FanEngine . . . . . . . . . . . . . . . . . . . . . . . . 315
Features Memory . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filter,
Engine Air Cleaner . . . . . . . . . . . 309
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 184
Flashers, Hazard Warning . . . . . . 185
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 362 Changing . . . . . . . . . . . . . . . . . . . . . 363
FlexFuel E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Floor Console Storage . . . . . . . . . . 129
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 391

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./Cana-
da/Mexico-12460267) - 2019 - crc - 9/11/18
442 Index
Headlamps (cont'd)High Intensity Discharge
(HID) Lighting . . . . . . . . . . . . . . . 326
High-Beam On Light . . . . . . . . . . 160
High/Low Beam Changer . . . . . 183
Lamps On Reminder . . . . . . . . . 160
Heated Rear Seats . . . . . . . . . . . . . . . . . . . . . 74
Steering Wheel . . . . . . . . . . . . . . . 133
Heated and Ventilated Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Heated Mirrors . . . . . . . . . . . . . . . . . . . 58
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . 223
Heating . . . . . . . . . . . . . . . . . . . . 191, 195
High-Beam On Light . . . . . . . . . . . . 160
High-Speed Operation . . . . . . . . . . 349
Hill and Mountain Roads . . . . . . . . 209
Hill Descent Control (HDC) . . . . . 244
Hill Start Assist (HSA) . . . . . . . . . . 241
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 298
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
How to Wear Seat Belts Properly . . . . . . . . . . . . . . . . . . . . . . . . 82
HVAC . . . . . . . . . . . . . . . . . . . . . . 191, 195I
Ignition Positions . . . . . . . . . . 217, 219
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . . . . 322
Immobilizer . . . . . . . . . . . . . . . . . . . . . . 55
Indicator
Vehicle Ahead . . . . . . . . . . . . . . . . 157
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . . 106
Information
Publication Ordering . . . . . . . . . . 420
Infotainment . . . . . . . . . . . . . . . . . . . . 190
Infotainment System . . . . . . . . . . . . 424
Instrument Cluster . . . . . . . . . . . . . . 143
Instrument Panel Storage Area . . . . . . . . . . . . . . . . . 126
Interior Rearview Mirrors . . . . . . . . . 60
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - North America . . . . . . . . . . . . . . . . . . . . . . . 374
K
Keyless EntryRemote (RKE) System . . . . . 34, 41
Keys . . . . . . . . . . . . . . . . . . . . . . . . . 29, 30
L
Labeling, Tire Sidewall . . . . . . . . . . 343
Lamps Daytime Running (DRL) . . . . . . 184
Dome . . . . . . . . . . . . . . . . . . . . . . . . . 187
Exterior Controls . . . . . . . . . . . . . . 181
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . 183
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . 189
License Plate . . . . . . . . . . . . . . . . . 328
Malfunction Indicator (Check Engine) . . . . . . . . . . . . . 153
On Reminder . . . . . . . . . . . . . . . . . 160
Reading . . . . . . . . . . . . . . . . . . . . . . 187
Lane Change Alert (LCA) . . . . . . . 264
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . . 266
Lane Keep Assist (LKA) . . . . . . . . 266
Lane Keep Assist Light . . . . . . . . . 156
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . . . 89
Lap-Shoulder Belt . . . . . . . . . . . . . . . 84
LATCH System Replacing Parts after a
Crash . . . . . . . . . . . . . . . . . . . . . . . 120
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . 111
LED Lighting . . . . . . . . . . . . . . . . . . . . 326

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./Cana-
da/Mexico-12460267) - 2019 - crc - 9/11/18
444 Index
Mirrors (cont'd)Manual Rearview . . . . . . . . . . . . . . . 60
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Tilt in Reverse . . . . . . . . . . . . . . . . . . 59
Mirrors, Interior Rearview . . . . . . . . 60
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 349
N
NavigationConnected Services . . . . . . . . . . 433
Net, Convenience . . . . . . . . . . . . . . 129
New Vehicle Break-In . . . . . . . . . . . 216
Noise Control System . . . . . . . . . . 320
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . 146 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Off-Road . . . . . . . . . . . . . . . . . . . . . . . 203 Driving . . . . . . . . . . . . . . . . . . . . . . . . 203
Recovery . . . . . . . . . . . . . . . . . . . . . 202
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 302
Engine Oil Life System . . . . . . . 304
Engine Oil Pressure Gauge . . . 147
Pressure Light . . . . . . . . . . . . . . . . 159
Older Children, Restraints . . . . . . 104
Online Owner Center . . . . . . . . . . . 414
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . 424 OnStar Additional
Information . . . . . . . . . . . . . . . . . . . . 427
OnStar Emergency . . . . . . . . . . . . . 426
OnStar Overview . . . . . . . . . . . . . . . 425
OnStar Security . . . . . . . . . . . . . . . . 427
Operation Fog Lamps . . . . . . . . . . . . . . . . . . . 186
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . 137
Overheating, Engine . . . . . . . . . . . . 313
P
Park Shifting Into . . . . . . . . . . . . . . . . . . . 224
Shifting Out of . . . . . . . . . . . . . . . . 226
Park Assist . . . . . . . . . . . . . . . . . . . . . 256
Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . 240
Brake and P (Park)Mechanism Check . . . . . . . . . . 322
Extended . . . . . . . . . . . . . . . . . . . . . 226
Over Things That Burn . . . . . . . 226
Parking or Backing Assistance Systems . . . . . . . . . . 256
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . 152
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 197 Passenger Sensing System . . . . . 98
Perchlorate Materials
Requirements, California . . . . . . 297
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . 169
Power Door Locks . . . . . . . . . . . . . . . . . . . . . 45
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Outlets . . . . . . . . . . . . . . . . . . . . . . . 137
Protection, Battery . . . . . . . . . . . . 189
Retained Accessory (RAP) . . . 224
Seat Adjustment . . . . . . . . . . . . . . . . 67
Windows . . . . . . . . . . . . . . . . . . . . . . . 61
Power Assist Steps . . . . . . . . . . . . . . 52
Pregnancy, Using Seat Belts . . . . 88
Privacy Vehicle Data Recording . . . . . . . 423
Program Courtesy Transportation . . . . . . 417
Prohibited Fuels . . . . . . . . . . . . . . . . 269
Proposition 65 Warning,
California . . . . . . . . . . . .296, 318, 374, Back Cover
Publication Ordering
Information . . . . . . . . . . . . . . . . . . . . 420