2016 CHEVROLET SUBURBAN engine overheat

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9159366) - 2016 - crc - 5/19/15
Vehicle Care 325
How to Add Coolant to the
Coolant Surge Tank
{Warning
You can be burned if you spill
coolant on hot engine parts.
Coolant contains ethylene glycol
and it will burn if the engine parts
are hot enough. Do not spill
coolant on a hot engine.
Caution
This vehicle has a specific
coolant fill procedure. Failure to
follow this procedure could cause
the engine to overheat and be
severely damaged.
{Warning
Steam and scalding liquids from a
hot cooling system can blow out
and burn you badly. Never turn
the cap when the cooling system,
including the surge tank pressure
cap, is hot. Wait for the cooling
system and surge tank pressure
cap to cool.
If no coolant is visible in the surge
tank, add coolant.
1. Remove the coolant surge tank pressure 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).

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9159366) - 2016 - crc - 5/19/15
326 Vehicle Care
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
For a heavy-duty Suburban, see the
Suburban Heavy-Duty Package
Supplement.
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 0142.
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
0 163 andEngine Power Messages
0 164.
If the decision is made not to lift the
hood when this warning appears,
get service help right away.
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
could be badly burned. Stop the
engine if it overheats, and get out
of the vehicle until the engine
is cool.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9159366) - 2016 - crc - 5/19/15
Vehicle Care 327
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
0 298.
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.
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.
If there is no sign of steam, idle the
engine for five minutes while
parked. If the warning is still
displayed, turn off the engine until it
cools down.
Engine Fan
If the vehicle has electric cooling
fans, the fans may be heard
spinning at low speed during most
everyday driving. The fans may turn
off if no cooling is required. Under
heavy vehicle loading, trailer towing,
high outside temperatures,
or operation of the air conditioning
system, the fans may change to
high speed and an increase in fan
noise may be heard. This is normal
and indicates that the cooling
system is functioning properly. The
fans will change to low speed when
additional cooling is no longer
required.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9159366) - 2016 - crc - 5/19/15
342 Vehicle Care
Windshield Wipers
If the wiper motor overheats due to
heavy snow or ice, the windshield
wipers will stop until the motor cools
and will then restart.
Although the circuit is protected
from electrical overload, overload
due to heavy snow or ice may
cause wiper linkage damage.
Always clear ice and heavy snow
from the windshield before using the
windshield wipers.
If the overload is caused by an
electrical problem and not snow or
ice, be sure to get it fixed.
Fuses
The wiring circuits in the vehicle are
protected from short circuits by
fuses. This greatly reduces the
chance of fires caused by electrical
problems.
Look at the silver-colored band
inside the fuse. If the band is broken
or melted, replace the fuse. Be sure
you replace a bad fuse with a new
one of the identical size and rating.Fuses of the same amperage can
be temporarily borrowed from
another fuse location, if a fuse goes
out. Replace the fuse as soon as
you can.
Engine Compartment
Fuse Block
For Heavy-Duty Suburban models,
see the Heavy-Duty Suburban
supplement.
The engine compartment fuse block
is in the engine compartment, on
the driver side of the vehicle.
Lift the cover to access the fuse
block.
Caution
Spilling liquid on any electrical
component on the vehicle may
damage it. Always keep the
covers on any electrical
component.
A fuse puller is available in the left
instrument panel fuse block.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9159366) - 2016 - crc - 5/19/15
444 Index
Driving (cont'd)Characteristics and
Towing Tips . . . . . . . . . . . . . . . . . 296
Defensive . . . . . . . . . . . . . . . . . . . . . 229
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 229
For Better Fuel Economy . . . . . . . 29
Hill and Mountain Roads . . . . . . 237
If the Vehicle is Stuck . . . . . . . . . 238
Loss of Control . . . . . . . . . . . . . . . 231
Off-Road . . . . . . . . . . . . . . . . . . . . . 231
Off-Road Recovery . . . . . . . . . . . 230
Vehicle Load Limits . . . . . . . . . . . 240
Wet Roads . . . . . . . . . . . . . . . . . . . 236
Winter . . . . . . . . . . . . . . . . . . . . . . . . 237
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 220
E
E85 or FlexFuel . . . . . . . . . . . . . . . . 293
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 309
Electrical System Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 342
Fuses . . . . . . . . . . . . . . . . . . . . . . . . 342
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . 345, 348
Overload . . . . . . . . . . . . . . . . . . . . . 341 Electrical System (cont'd)
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 350
Emergency
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 432
Engine Air Cleaner/Filter . . . . . . . . . . . . . 321
Check and Service EngineSoon Light . . . . . . . . . . . . . . . . . . 146
Compartment Overview . . . . . . . 314
Coolant . . . . . . . . . . . . . . . . . . . . . . . 323
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 142
Cooling System . . . . . . . . . . . . . . . 322
Cooling System Messages . . . 163
Drive Belt Routing . . . . . . . . . . . . 416
Exhaust . . . . . . . . . . . . . . . . . . . . . . 254
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
Heater . . . . . . . . . . . . . . . . . . . . . . . . 250
Oil Life System . . . . . . . . . . . . . . . 317
Oil Messages . . . . . . . . . . . . . . . . . 164
Oil Pressure Gauge . . . . . . . . . . 141
Overheating . . . . . . . . . . . . . . . . . . 326
Power Messages . . . . . . . . . . . . . 164
Running While Parked . . . . . . . . 255
Starting . . . . . . . . . . . . . . . . . . . . . . . 248
Entry Lighting . . . . . . . . . . . . . . . . . . . 190
Equipment, Towing . . . . . . . . . . . . . 302 Event Data Recorders . . . . . . . . . . 429
Exit Lighting . . . . . . . . . . . . . . . . . . . . 190
Extender, Safety Belt . . . . . . . . . . . . 88
Exterior Lamp Controls . . . . . . . . . 183
Exterior Lamps Off Reminder . . . 185
F
Fan
Engine . . . . . . . . . . . . . . . . . . . . . . . . 327
Features Memory . . . . . . . . . . . . . . . . . . . . . . . . . 13
Filter,
Engine Air Cleaner . . . . . . . . . . . 321
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 185
Flashers, Hazard Warning . . . . . . 187
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 371 Changing . . . . . . . . . . . . . . . . . . . . . 372
FlexFuel E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 398
Fluid Automatic Transmission . . . . . . 318
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 329
Four-Wheel DriveTransfer Case . . . . . . . . . . . . . . . 260
Power Steering . . . . . . . . . . . . . . . 328
Washer . . . . . . . . . . . . . . . . . . . . . . . 328
Fog Lamps Bulb Replacement . . . . . . . 188, 338

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9159366) - 2016 - crc - 5/19/15
448 Index
N
NavigationOnStar®. . . . . . . . . . . . . . . . . . . . . . 432
New Vehicle Break-In . . . . . . . . . . . 244
Noise Control System . . . . . . . . . . 333
O
Object Detection System Messages . . . . . . . . . . . . . . . . . . . . . 166
Odometer . . . . . . . . . . . . . . . . . . . . . . . 140 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Off-Road . . . . . . . . . . . . . . . . . . . . . . . 231 Driving . . . . . . . . . . . . . . . . . . . . . . . . 231
Recovery . . . . . . . . . . . . . . . . . . . . . 230
Oil
Engine . . . . . . . . . . . . . . . . . . . . . . . . 315
Engine Oil Life System . . . . . . . 317
Engine Oil Pressure Gauge . . . 141
Messages . . . . . . . . . . . . . . . . . . . . 164
Older Children, Restraints . . . . . . 102
Online Owner Center . . . . . . . . . . . 420
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . 429
OnStar
®Additional
Information . . . . . . . . . . . . . . . . . . . . 435
OnStar
®Connections . . . . . . . . . . . 433
OnStar®Diagnostics . . . . . . . . . . . . 435
OnStar®Emergency . . . . . . . . . . . . 432
OnStar®Navigation . . . . . . . . . . . . . 432
OnStar®Overview . . . . . . . . . . . . . . 431 OnStar
®Security . . . . . . . . . . . . . . . 432
Ordering
Service Publications . . . . . . . . . . 426
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . 133
Overheating, Engine . . . . . . . . . . . . 326
Overview . . . . . . . . . . . . . . . . . . . . . . . 193
P
Park Shifting Into . . . . . . . . . . . . . . . . . . . 252
Shifting Out of . . . . . . . . . . . . . . . . 253
Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . 265
Brake and P (Park)Mechanism Check . . . . . . . . . . 335
Over Things That Burn . . . . . . . 253
Parking or Backing Assistance Systems . . . . . . . . . . 281
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . 145
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Passenger Sensing System . . . . . 96
Perchlorate Materials Requirements, California . . . . . . 312
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . 173 Phone
Bluetooth . . . . . . . . . . . 208, 209, 213
Port USB . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Power Door Locks . . . . . . . . . . . . . . . . . . . . . 45
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Outlets . . . . . . . . . . . . . . . . . . . . . . . 133
Protection, Battery . . . . . . . . . . . . 191
Retained Accessory (RAP) . . . 251
Seat Adjustment . . . . . . . . . . . . . . . . 66
Steering Fluid . . . . . . . . . . . . . . . . . 328
Windows . . . . . . . . . . . . . . . . . . . . . . . 59
Power Assist Steps . . . . . . . . . . . . . . 51
Pregnancy, Using Safety Belts . . . 87
Privacy Vehicle Data Recording . . . . . . . 428
Program Courtesy Transportation . . . . . . 423
Proposition 65 Warning,
California . . . . . . . . . . . . 311, 331, 382
R
Radio Frequency Statement . . . . 427
Radio Reception . . . . . . . . . . . . . . . . 200
Radios
AM-FM Radio . . . . . . . . . . . . . . . . . 198