heater GMC YUKON XL 2017 User Guide

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
302 Vehicle Care
If Steam is Coming from the
Engine Compartment
{Warning
Steam from an overheated engine
can burn you badly, even if you
just open the hood. Stay away
from the engine if you see or hear
steam coming from it. Just turn it
off and get everyone away from
the vehicle until it cools down.
Wait until there is no sign of
steam or coolant before you open
the hood.
If you keep driving when the
engine is overheated, the liquids
in it can catch fire. You or others
could be badly burned. Stop the
engine if it overheats, and get out
of the vehicle until the engine
is cool.
If No Steam is Coming from
the Engine Compartment
The ENGINE OVERHEATED STOP
ENGINE or the ENGINE
OVERHEATED IDLE ENGINEmessage, along with a low coolant
condition, can indicate a serious
problem.
If there is an engine overheat
warning, but no steam is seen or
heard, the problem may not be too
serious. Sometimes the engine can
get a little too hot when the vehicle:
.
Climbs a long hill on a hot day.
. Stops after high-speed driving.
. Idles for long periods in traffic.
. Tows a trailer; see Trailer
Towing 0271.
If the ENGINE OVERHEATED
STOP ENGINE or the ENGINE
OVERHEATED IDLE ENGINE
message appears with no sign of
steam, try this for a minute or so: 1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and to the
highest fan speed. Open the
windows as necessary.
3. When it is safe to do so, pull off the road, shift to P (Park) or
N (Neutral), and let the
engine idle. If the engine coolant temperature
gauge is no longer in the overheat
zone or an overheat warning no
longer displays, the vehicle can be
driven. Continue to drive the vehicle
slowly for about 10 minutes. Keep a
safe vehicle distance from the
vehicle in front. If the warning does
not come back on, continue to drive
normally and have the cooling
system checked for proper fill and
function.
If the warning continues, pull over,
stop, and park the vehicle
right away.
If there is still no sign of steam and
the vehicle is equipped with an
engine driven cooling fan, push
down the accelerator until the
engine speed is about twice as fast
as normal idle speed for at least
five minutes while the vehicle is
parked. If the warning is still there,
turn off the engine and get everyone
out of the vehicle until it cools down.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
320 Vehicle Care
ItemUsage
102 Engine control module/
Transmission
control module
103 Auxiliary interior heater
104 Starter
105 –
106 –
107 Aeroshutter
108 –
109 Police upfitter 110 –
111 –
112 Starter relay
113 –
114 Front windshield washer
115 Rear window washer
116 Left cooling fan
117 Fuel pump prime Item
Usage
118 –
119 –
120 Fuel pump prime
121 Right HID headlamp
122 Left HID headlamp
123 Right cooling fan
Instrument Panel Fuse
Block (Left)
The left instrument panel fuse block
access door is on the driver side
edge of the instrument panel.
Pull off the cover to access the fuse
block.

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

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
420 Index
Heated and Ventilated FrontSeats . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Heated Mirrors . . . . . . . . . . . . . . . . . . . 55
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . 222
Heating . . . . . . . . . . . . . . . . . . . . 191, 195
High-Beam On Light . . . . . . . . . . . . 150
High-Speed Operation . . . . . . . . . . 334
Hill and Mountain Roads . . . . . . . . 209
Hill Start Assist (HSA) . . . . . . . . . . 238
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
How to Wear Safety Belts Properly . . . . . . . . . . . . . . . . . . . . . . . . 78
HVAC . . . . . . . . . . . . . . . . . . . . . . 191, 195
I
Ignition Positions . . . . . . . . . . 217, 219
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . . . . 310
Immobilizer . . . . . . . . . . . . . . . . . . . . . . 52
Indicator
Vehicle Ahead . . . . . . . . . . . . . . . . 147
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . . 100
Infotainment . . . . . . . . . . . . . . . . . . . . 190
Infotainment System . . . . . . . . . . . . 404
Instrument Cluster . . . . . . . . . . . . . . 134 Instrument Panel
Storage Area . . . . . . . . . . . . . . . . . 120
Interior Rearview Mirrors . . . . . . . . . 57
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - North America . . . . . . . . . . . . . . . . . . . . . . . 357
K
Key and Lock Messages . . . . . . . . 162
Keyless EntryRemote (RKE) System . . . . . 32, 34
Keys . . . . . . . . . . . . . . . . . . . . . . . . . 28, 31
L
Labeling, Tire Sidewall . . . . . . . . . . 328
Lamps Daytime Running (DRL) . . . . . . 184
Dome . . . . . . . . . . . . . . . . . . . . . . . . . 187
Exterior Controls . . . . . . . . . . . . . . 181
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . 183
License Plate . . . . . . . . . . . . . . . . . 314
Malfunction Indicator . . . . . . . . . 144
Messages . . . . . . . . . . . . . . . . . . . . 163
On Reminder . . . . . . . . . . . . . . . . . 151 Lamps (cont'd)
Reading . . . . . . . . . . . . . . . . . . . . . . 187
Lane Change Alert (LCA) . . . . . . . 259
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . . 261
Lane Keep Assist (LKA) . . . . . . . . 261
Lane Keep Assist Light . . . . . . . . . 147
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . . . 84
Lap-Shoulder Belt . . . . . . . . . . . . . . . 79
LATCH System Replacing Parts after aCrash . . . . . . . . . . . . . . . . . . . . . . . .113
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . 105
LED Lighting . . . . . . . . . . . . . . . . . . . . 313
Level Control Automatic . . . . . . . . . . . . . . . . . . . . . 241
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Lighting
Entry . . . . . . . . . . . . . . . . . . . . . . . . . 188
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Illumination Control . . . . . . . . . . . 186
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 Airbag Readiness . . . . . . . . . . . . . 142
Antilock Brake System(ABS) Warning . . . . . . . . . . . . . . 146
Brake System Warning . . . . . . . 145