2016 GMC YUKON DENALI engine overheat

GMC Yukon Denali/Yukon XL Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9159308) - 2016 - crc - 6/2/15
Vehicle Care 273
1. Remove the coolant surge tankpressure cap when the cooling
system, including the coolant
surge tank pressure cap and
upper radiator hose, is no
longer hot.
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
possible engine damage may
occur. Be sure the cap is properly
and tightly secured.
Engine Overheating
Caution
Running the engine without
coolant may cause damage or a
fire. Vehicle damage would not be
covered by the vehicle warranty.
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 0124.
In addition, there are ENGINE
OVERHEATED STOP ENGINE,
ENGINE OVERHEATED IDLE
ENGINE, and ENGINE POWER IS
REDUCED messages in the Driver
Information Center (DIC). See
Engine Cooling System Messages
0 146 andEngine Power Messages
0 147.
If the decision is made not to lift the
hood when this warning appears,
get service help right away.

GMC Yukon Denali/Yukon XL Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9159308) - 2016 - crc - 6/2/15
274 Vehicle Care
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, and
have the vehicle serviced.
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(Continued)
Warning (Continued)
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 ENGINE
message, 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
0 248. 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 temperature overheat 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.

GMC Yukon Denali/Yukon XL Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9159308) - 2016 - crc - 6/2/15
Index 387
Dual Automatic ClimateControl System . . . . . . . . . . . . . . . . 174
E
Electrical Equipment,
Add-On . . . . . . . . . . . . . . . . . . . . . . . 259
Electrical System
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 288
Fuses . . . . . . . . . . . . . . . . . . . . . . . . 287
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . 291, 294
Overload . . . . . . . . . . . . . . . . . . . . . 287
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 296
Emergency OnStar
®. . . . . . . . . . . . . . . . . . . . . . 375
Engine Air Cleaner/Filter . . . . . . . . . . . . . 269
Check and Service EngineSoon Light . . . . . . . . . . . . . . . . . . 129
Compartment Overview . . . . . . . 264
Coolant . . . . . . . . . . . . . . . . . . . . . . . 271
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 124
Coolant Temperature
Warning Light . . . . . . . . . . . . . . . 133
Cooling System . . . . . . . . . . . . . . . 270
Cooling System Messages . . . 146 Engine (cont'd)
Drive Belt Routing . . . . . . . . . . . . 359
Exhaust . . . . . . . . . . . . . . . . . . . . . . 206
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Heater . . . . . . . . . . . . . . . . . . . . . . . . 202
Oil Life System . . . . . . . . . . . . . . . 267
Oil Messages . . . . . . . . . . . . . . . . . 146
Oil Pressure Gauge . . . . . . . . . . 123
Oil Pressure Light . . . . . . . . . . . . 134
Overheating . . . . . . . . . . . . . . . . . . 273
Power Messages . . . . . . . . . . . . . 147
Running While Parked . . . . . . . . 206
Starting . . . . . . . . . . . . . . . . . . . . . . . 201
Entry Lighting . . . . . . . . . . . . . . . . . . . 171
Equipment, Towing . . . . . . . . . . . . . 251
Event Data Recorders . . . . . . . . . . 372
Exit Lighting . . . . . . . . . . . . . . . . . . . . 171
Extender, Safety Belt . . . . . . . . . . . . 72
Exterior Lamp Controls . . . . . . . . . 165
Exterior Lamps Off Reminder . . . 166
F
Fan Engine . . . . . . . . . . . . . . . . . . . . . . . . 275
Features Memory . . . . . . . . . . . . . . . . . . . . . . . . . 11
Filter, Engine Air Cleaner . . . . . . . . . . . 269
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 166 Flashers, Hazard Warning . . . . . . 168
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 316
Changing . . . . . . . . . . . . . . . . . . . . . 317
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 342
Fluid Automatic Transmission . . . . . . 268
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 277
Four-Wheel DriveTransfer Case . . . . . . . . . . . . . . . 213
Washer . . . . . . . . . . . . . . . . . . . . . . . 275
Fog Lamps
Bulb Replacement . . . . . . . 169, 285
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . 234
Four-Wheel Drive . . . . . . . . . . 213, 278
Four-Wheel-Drive Light . . . . . . . . . 131
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 370
Front Automatic Braking (FAB) System . . . . . . . . . . . . . . . . . 236
Front Axle . . . . . . . . . . . . . . . . . . . . . . 279
Front Fog Lamp
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Front Seats Heated and Cooled . . . . . . . . . . . . . 57
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242 Additives . . . . . . . . . . . . . . . . . . . . . 243
Economy Driving . . . . . . . . . . . . . . . 24

GMC Yukon Denali/Yukon XL Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9159308) - 2016 - crc - 6/2/15
Index 391
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . 373
OnStar®Additional
Information . . . . . . . . . . . . . . . . . . . . 378
OnStar
®Connections . . . . . . . . . . . 376
OnStar®Diagnostics . . . . . . . . . . . . 378
OnStar®Emergency . . . . . . . . . . . . 375
OnStar®Navigation . . . . . . . . . . . . . 375
OnStar®Overview . . . . . . . . . . . . . . 374
OnStar®Security . . . . . . . . . . . . . . . 375
Ordering Service Publications . . . . . . . . . . 369
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . .116
Overheating, Engine . . . . . . . . . . . . 273
P
Park Shifting Into . . . . . . . . . . . . . . . . . . . 203
Shifting Out of . . . . . . . . . . . . . . . . 204
Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . 217
Brake and P (Park)
Mechanism Check . . . . . . . . . . 282
Over Things That Burn . . . . . . . 205
Parking or Backing Assistance Systems . . . . . . . . . . 231
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . 127 Passenger Compartment Air
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Passenger Sensing System . . . . . 80
Perchlorate Materials Requirements, California . . . . . . 261
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . 155
Power Door Locks . . . . . . . . . . . . . . . . . . . . . 34
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Outlets . . . . . . . . . . . . . . . . . . . . . . . .116
Protection, Battery . . . . . . . . . . . . 172
Retained Accessory (RAP) . . . 203
Seat Adjustment . . . . . . . . . . . . . . . . 53
Windows . . . . . . . . . . . . . . . . . . . . . . . 47
Power Assist Steps . . . . . . . . . . . . . . 40
Pregnancy, Using Safety Belts . . . 71
Privacy
Vehicle Data Recording . . . . . . . 372
Program Courtesy Transportation . . . . . . 366
Proposition 65 Warning,
California . . . . . . . . . . . .261, 278, 326
R
Radio Frequency Statement . . . . 370
Reading Lamps . . . . . . . . . . . . . . . . . 170
Rear Axle . . . . . . . . . . . . . . . . . . . . . . . 280Locking . . . . . . . . . . . . . . . . . . . . . . . 220
Rear Climate Control System . . . 178
Rear Seats Heated . . . . . . . . . . . . . . . . . . . . . . . . . 58
Rear Storage . . . . . . . . . . . . . . . . . . . 107
Rear Window Washer/Wiper . . . . 114
Rearview Mirrors Automatic Dimming . . . . . . . . . . . . . 46
Reclining Seatbacks . . . . . . . . . . . . . 54
Recommended Fluids and Lubricants . . . . . . . . . . . . . . . . . . . . . 353
Records Maintenance . . . . . . . . . . . . . . . . . . 356
Recreational Vehicle Towing . . . . 330
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . . 364
Remote Keyless Entry (RKE) System . . . . . . . . . . . . . . 26, 27
Remote Vehicle Start . . . . . . . . . . . . 33
Replacement Glass . . . . . . . . . . . . . . . . . . . . . . . . . 283
Replacement Bulbs . . . . . . . . . . . . . 287
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . . . 85