engine coolant CHEVROLET TAHOE 2017 4.G User Guide

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955986) - 2017 - crc - 7/5/16
Vehicle Care 333
1. Coolant Surge Tank
2. Coolant Surge TankPressure Cap
3. Engine Electric Cooling Fans
{Warning
An electric engine cooling fan can
start even when the engine is not
running. To avoid injury, always
keep hands, clothing, and tools
away from any engine
cooling fan.
{Warning
Heater and radiator hoses, and
other engine parts, can be very
hot. Do not touch them. If you do,
you can be burned.
Do not run the engine if there is a
leak. If you run the engine, it
could lose all coolant. That could
cause an engine fire, and you
could be burned. Get any leak
fixed before you drive the vehicle.
Caution
Using coolant other than
DEX-COOL®can cause
premature engine, heater core,
or radiator corrosion. In addition,
the engine coolant could require
changing sooner. Any repairs
would not be covered by the
vehicle warranty. Always use
DEX-COOL (silicate-free) coolant
in the vehicle.
Engine Coolant
For a heavy-duty Suburban, see the
Suburban Heavy-Duty Package
supplement.
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 0336.
What to Use
{Warning
Adding only plain water or some
other liquid to the cooling system
can be dangerous. Plain water
and other liquids, can boil before
the proper coolant mixture will.
The coolant warning system is set
for the proper coolant mixture.
(Continued)

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
Service and Maintenance 413
a year and the oil life system must
be reset. Your trained dealer
technician can perform this work.
If the engine oil life system is reset
accidentally, service the vehicle
within 5 000 km/3,000 mi since the
last service. Reset the oil life
system when the oil is changed.
SeeEngine Oil Life System 0327.
Tire Rotation and Required
Services Every 12 000 km/
7,500 mi
Rotate the tires, if recommended for
the vehicle, and perform the
following services. See Tire
Rotation 0375.
. Check engine oil level and oil
life percentage. If needed,
change engine oil and filter, and
reset oil life system. See Engine
Oil 0325 andEngine Oil Life
System 0327.
. Check engine coolant level. See
Engine Coolant 0333.
. Check windshield washer fluid
level. See Washer Fluid 0338. .
Visually inspect windshield wiper
blades for wear, cracking,
or contamination. See Exterior
Care 0402. Replace worn or
damaged wiper blades. See
Wiper Blade
Replacement 0345.
. Check tire inflation pressures.
See Tire Pressure 0369.
. Inspect tire wear. See Tire
Inspection 0375.
. Visually check for fluid leaks.
. Inspect engine air cleaner filter.
See Engine Air Cleaner/
Filter 0331.
. Inspect brake system. See
Exterior Care 0402.
. Visually inspect steering,
suspension, and chassis
components for damaged, loose,
or missing parts or signs of wear
at least once a year. See
Exterior Care 0402. Lubricate
the suspension and steering
components at least every other
oil change (if equipped with
grease fittings). .
Check restraint system
components. See Safety System
Check 090.
. Visually inspect fuel system for
damage or leaks.
. Visually inspect exhaust system
and nearby heat shields for
loose or damaged parts.
. Lubricate body components. See
Exterior Care 0402.
. Check starter switch. See Starter
Switch Check 0344.
. Check automatic transmission
shift lock control function. See
Automatic Transmission Shift
Lock Control Function
Check 0344.
. Check ignition transmission lock.
See Ignition Transmission Lock
Check 0344.
. Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism
Check 0345.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955986) - 2017 - crc - 7/5/16
Service and Maintenance 421
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
Fluids and lubricants identified below by name, part number, or specification can be obtained from your dealer.Usage Fluid/Lubricant
Automatic Transmission DEXRON
®-VI Automatic Transmission Fluid.
Chassis Lubrication Chassis Lubricant (GM Part No. 12377985, in Canada 88901242) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL
®Coolant.
See Engine Coolant 0333.
Engine Oil Engine oil meeting the dexos1™ specification of the proper SAE viscosity
grade. ACDelco dexos1 Synthetic Blend is recommended. See Engine
Oil 0325.
Front Axle (Four-Wheel Drive) SAE 75W-90 Synthetic Axle Lubricant (GM Part No. 88900401, in Canada 89021678).
Front Axle Propshaft Spline or One-Piece Propshaft Spline (Two-Wheel Drive) Spline Lubricant, Special Lubricant (GM Part No. 19257121, in
Canada 19257122).
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid (GM Part No. 19299818, in Canada 19299819).
Key Lock Cylinders, Hood Hinges, Power Assist Steps, and OuterLiftgate Handle Pivot Points Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in
Canada 10953474).

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