2017 CHEVROLET TAHOE coolant temperature

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955986) - 2017 - crc - 7/5/16
334 Vehicle Care
Warning (Continued)
With plain water or the wrong
mixture, the engine could get too
hot but you would not get the
overheat warning. The engine
could catch fire and you or others
could be burned. Use a 50/
50 mixture of clean, drinkable
water and DEX-COOL coolant.
Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
coolant. If using this mixture,
nothing else needs to be added.
This mixture:
. Gives freezing protection down
to−37 °C (−34 °F), outside
temperature.
. Gives boiling protection up to
129 °C (265 °F), engine
temperature.
. Protects against rust and
corrosion.
. Will not damage aluminum parts.
. Helps keep the proper engine
temperature.
Caution
If improper coolant mixture,
inhibitors, or additives are used in
the vehicle cooling system, the
engine could overheat and be
damaged. Too much water in the
mixture can freeze and crack
engine cooling parts. The repairs
would not be covered by the
vehicle warranty. Use only the
proper mixture of engine coolant
for the cooling system. See
Recommended Fluids and
Lubricants 0421.
Never dispose of engine coolant by
putting it in the trash, or by pouring
it on the ground, or into sewers,
streams, or bodies of water. Have
the coolant changed by an
authorized service center, familiar
with legal requirements regarding
used coolant disposal. This will help
protect the environment and your
health.
Checking Coolant
The coolant surge tank is in the
engine compartment on the
passenger side of the vehicle. See
Engine Compartment
Overview 0323.
The vehicle must be on a level
surface when checking the coolant
level.
Check to see if coolant is visible in
the coolant surge tank. If the coolant
inside the coolant surge tank is
boiling, wait until it cools down. The
coolant level should be at or above

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955986) - 2017 - crc - 7/5/16
Vehicle Care 335
the FULL COLD mark. If it is not,
there may be a leak in the cooling
system.
If coolant is visible but the coolant
level is not at or above the FULL
COLD mark, see“How to Add
Coolant to the Coolant Surge Tank,”
following.
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).
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.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955986) - 2017 - crc - 7/5/16
336 Vehicle Care
6. Verify coolant level after theengine 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 0147.
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
0 168 andEngine Power
Messages 0169.
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.
If No Steam is Coming from
the Engine Compartment
The ENGINE OVERHEATED STOP
ENGINE or the ENGINE
OVERHEATED IDLE ENGINE

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955986) - 2017 - crc - 7/5/16
Vehicle Care 337
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 0306.
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.
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.
The electric engine cooling fans
may run after the engine has been
turned. off. This is normal and no
service is required.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955986) - 2017 - crc - 7/5/16
338 Vehicle Care
Power Steering Fluid
For a heavy-duty Suburban, see the
Suburban Heavy-Duty Package
supplement.
Washer Fluid
What to Use
When windshield washer fluid needs
to be added, be sure to read the
manufacturer's instructions before
use. Use a fluid that has sufficient
protection against freezing in an
area where the temperature may fall
below freezing.
Adding Washer Fluid
The vehicle has a low washer fluid
message on the DIC that comes on
when the washer fluid is low. The
message is displayed for
15 seconds at the start of each
ignition cycle. When the WASHER
FLUID LOW ADD FLUID message
displays, washer fluid will need to
be added to the windshield washer
fluid reservoir.
Open the cap with the washer
symbol on it. Add washer fluid until
the tank is full. SeeEngine
Compartment Overview 0323 for
reservoir location.
Caution
. Do not use washer fluid that
contains any type of water
repellent coating. This can
cause the wiper blades to
chatter or skip.
. Do not use engine coolant
(antifreeze) in the
windshield washer. It can
damage the windshield
washer system and paint.
. Do not mix water with
ready-to-use washer fluid.
Water can cause the
solution to freeze and
(Continued)
Caution (Continued)
damage the washer fluid
tank and other parts of the
washer system.
. When using concentrated
washer fluid, follow the
manufacturer instructions for
adding water.
. Fill the washer fluid tank
only three-quarters full when
it is very cold. This allows
for fluid expansion if
freezing occurs, which could
damage the tank if it is
completely full.
Brakes
Disc brake pads have built-in wear
indicators that make a high-pitched
warning sound when the brake pads
are worn and new pads are needed.
The sound can come and go or can
be heard all the time when the
vehicle is moving, except when
applying the brake pedal firmly.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955986) - 2017 - crc - 7/5/16
Index 455
Carbon Monoxide (cont'd)Winter Driving . . . . . . . . . . . . . . . . 244
Cargo Tie-Downs . . . . . . . . . . . . . . . . . . . . 127
Caution, Danger, and Warning . . . . 3
CD Player . . . . . . . . . . . . . . . . . . . . . . 208
Center Console Storage . . . . . . . . 126
Center Seat . . . . . . . . . . . . . . . . . . . . . 68
Chains, Tire . . . . . . . . . . . . . . . . . . . . 381
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . 138
Charging System Light . . . . . . . . . 151
Check Ignition Transmission Lock . . . 344
Malfunction Indicator
Engine Light . . . . . . . . . . . . . . . . 151
Child Restraints Infants and Young Children . . . 106
Lower Anchors and Tethers
for Children . . . . . . . . . . . . . . . . . . 111
Older Children . . . . . . . . . . . . . . . . 104
Securing . . . . . . . . . . . . 119, 121, 122
Systems . . . . . . . . . . . . . . . . . . . . . . 108
Child-View Mirror . . . . . . . . . . . . . . . . 60
Cleaning Exterior Care . . . . . . . . . . . . . . . . . 402
Interior Care . . . . . . . . . . . . . . . . . . 406 Climate Control Systems
Dual Automatic . . . . . . . . . . . . . . . 226
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Cluster, Instrument . . . . . . . . . . . . . 141
Collision Damage Repair . . . . . . . 436
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . 125
Compass . . . . . . . . . . . . . . . . . . . . . . . 135 Messages . . . . . . . . . . . . . . . . . . . . 167
Connections
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 445
Control . . . . . . . . . . . . . . . . . . . . . . . . . 276 Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . 274
Control Light
Hill Descent . . . . . . . . . . . . . . . . . . 154
Control of a Vehicle . . . . . . . . . . . . . 236
Convenience Net . . . . . . . . . . . . . . . 127
Convex Mirrors . . . . . . . . . . . . . . . . . . 57
Coolant Engine . . . . . . . . . . . . . . . . . . . . . . . . 333
Engine Temperature Gauge . . 147
Cooling . . . . . . . . . . . . . . . . . . . . 226, 230
Cooling System . . . . . . . . . . . . . . . . . 332 Engine Messages . . . . . . . . . . . . 168
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . 435 Cruise Control . . . . . . . . . . . . . . . . . . 278
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Messages . . . . . . . . . . . . . . . . . . . . 167
Cruise Control, Adaptive . . . . . . . . 280
Cupholders . . . . . . . . . . . . . . . . . . . . . 125
Customer Assistance . . . . . . . . . . . 432 Offices . . . . . . . . . . . . . . . . . . . . . . . . 431
Text Telephone (TTY)
Users . . . . . . . . . . . . . . . . . . . . . . . 432
Customer Information Service Publications
Ordering Information . . . . . . . . 438
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . 429
D
Damage Repair, Collision . . . . . . . 436
Danger, Warning, and Caution . . . . 3
Data CollectionInfotainment System . . . . . . . . . . 442
OnStar . . . . . . . . . . . . . . . . . . . . . . . 441
Data Recorders, Event . . . . . . . . . 441
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 192
Defensive Driving . . . . . . . . . . . . . . . 236
Delayed Locking . . . . . . . . . . . . . . . . . 46
Diagnostics OnStar
®. . . . . . . . . . . . . . . . . . . . . . 447
Distracted Driving . . . . . . . . . . . . . . . 235

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955986) - 2017 - crc - 7/5/16
456 Index
Dome Lamps . . . . . . . . . . . . . . . . . . . 195
DoorAjar Messages . . . . . . . . . . . . . . . 168
Delayed Locking . . . . . . . . . . . . . . . . 46
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Power Locks . . . . . . . . . . . . . . . . . . . . 45
Drive Belt Routing, Engine . . . . . . 428
Driver Assistance Systems . . . . . 287
Driver Information
Center (DIC) . . . . . . . . . . . . . 158, 160
Driving
Assistance Systems . . . . . . . . . . 290
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . 303
Defensive . . . . . . . . . . . . . . . . . . . . . 236
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 236
For Better Fuel Economy . . . . . . . 30
Hill and Mountain Roads . . . . . . 243
If the Vehicle is Stuck . . . . . . . . . 245
Loss of Control . . . . . . . . . . . . . . . 238
Off-Road . . . . . . . . . . . . . . . . . . . . . 238
Off-Road Recovery . . . . . . . . . . . 237
Vehicle Load Limits . . . . . . . . . . . 247
Wet Roads . . . . . . . . . . . . . . . . . . . 243
Winter . . . . . . . . . . . . . . . . . . . . . . . . 244
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 226E
E85 or FlexFuel . . . . . . . . . . . . . . . . 300
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 318
Electrical System
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 352
Fuses . . . . . . . . . . . . . . . . . . . . . . . . 351
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . 356, 359
Overload . . . . . . . . . . . . . . . . . . . . . 351
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 361
Emergency
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 444
Engine Air Cleaner/Filter . . . . . . . . . . . . . 331
Check and Service EngineSoon Light . . . . . . . . . . . . . . . . . . 151
Compartment Overview . . . . . . . 323
Coolant . . . . . . . . . . . . . . . . . . . . . . . 333
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 147
Cooling System . . . . . . . . . . . . . . . 332
Cooling System Messages . . . 168
Drive Belt Routing . . . . . . . . . . . . 428
Exhaust . . . . . . . . . . . . . . . . . . . . . . 261
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . 337 Engine (cont'd)
Heater . . . . . . . . . . . . . . . . . . . . . . . . 257
Oil Life System . . . . . . . . . . . . . . . 327
Oil Messages . . . . . . . . . . . . . . . . . 169
Oil Pressure Gauge . . . . . . . . . . 146
Overheating . . . . . . . . . . . . . . . . . . 336
Power Messages . . . . . . . . . . . . . 169
Running While Parked . . . . . . . . 262
Starting . . . . . . . . . . . . . . . . . . . . . . . 255
Entry Lighting . . . . . . . . . . . . . . . . . . . 196
Equipment, Towing . . . . . . . . . . . . . 310
Event Data Recorders . . . . . . . . . . 441
Exit Lighting . . . . . . . . . . . . . . . . . . . . 196
Extended Parking . . . . . . . . . . . . . . . 261
Extender, Safety Belt . . . . . . . . . . . . 90
Exterior Lamp Controls . . . . . . . . . 189
Exterior Lamps Off Reminder . . . 191
F
Fan Engine . . . . . . . . . . . . . . . . . . . . . . . . 337
Features Memory . . . . . . . . . . . . . . . . . . . . . . . . . 13
Filter,
Engine Air Cleaner . . . . . . . . . . . 331
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 191
Flashers, Hazard Warning . . . . . . 193
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 382 Changing . . . . . . . . . . . . . . . . . . . . . 383

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955986) - 2017 - crc - 7/5/16
Index 457
FlexFuelE85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 409
Fluid Automatic Transmission . . . . . . 328
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 339
Four-Wheel DriveTransfer Case . . . . . . . . . . . . . . . 267
Power Steering . . . . . . . . . . . . . . . 338
Washer . . . . . . . . . . . . . . . . . . . . . . . 338
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 194
Bulb Replacement . . . . . . . . . . . . 348
Folding Mirrors . . . . . . . . . . . . . . . . . . 58
Forward Automatic Braking . . . . . 293
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . 291
Four-Wheel Drive . . . . . . . . . . 267, 341
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 439
Front Axle . . . . . . . . . . . . . . . . . . . . . . 341
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . . 67
Heated and Ventilated . . . . . . . . . . 72
Front Turn Signal Lamps . . . . . . . 348
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298 Additives . . . . . . . . . . . . . . . . . . . . . 300 Fuel (cont'd)
Economy Driving . . . . . . . . . . . . . . . 30
Filling a Portable Fuel
Container . . . . . . . . . . . . . . . . . . . 302
Filling the Tank . . . . . . . . . . . . . . . 301
Foreign Countries . . . . . . . . . . . . 299
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 145
Low Fuel Warning Light . . . . . . . 156
Management, Active . . . . . . . . . . 261
Requirements, California . . . . . 299
System Messages . . . . . . . . . . . . 170
Full-Size Spare Tire . . . . . . . . . . . . 392
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . 351 Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 352
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . 356, 359
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 361
G
Garage Door Opener . . . . . . . . . . . 185Programming . . . . . . . . . . . . . . . . . 185
Gauges
Engine CoolantTemperature . . . . . . . . . . . . . . . . 147
Engine Oil Pressure . . . . . . . . . . 146
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Odometer . . . . . . . . . . . . . . . . . . . . . 145 Gauges (cont'd)
Speedometer . . . . . . . . . . . . . . . . . 145
Tachometer . . . . . . . . . . . . . . . . . . . 145
Trip Odometer . . . . . . . . . . . . . . . . 145
Voltmeter . . . . . . . . . . . . . . . . . . . . . 148
Warning Lights and
Indicators . . . . . . . . . . . . . . . . . . . 140
General Information Service and Maintenance . . . . . .411
Towing . . . . . . . . . . . . . . . . . . . . . . . . 303
Vehicle Care . . . . . . . . . . . . . . . . . . 320
Glass Replacement . . . . . . . . . . . . . 346
Glove Box . . . . . . . . . . . . . . . . . . . . . . 125
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . 433
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . 347
Hazard Warning Flashers . . . . . . . 193
Head Restraints . . . . . . . . . . . . . . . . . 66
Head-up Display . . . . . . . . . . . . . . . . 162
Headlamps . . . . . . . . . . . . . . . . . . . . . 348Aiming . . . . . . . . . . . . . . . . . . . . . . . . 347
Automatic . . . . . . . . . . . . . . . . . . . . . 192
Bulb Replacement . . . . . . . . . . . . 347
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . 192
Flash-to-Pass . . . . . . . . . . . . . . . . . 191