coolant CHEVROLET SUBURBAN 2019 User Guide

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
Vehicle Care 319
.Helps keep the proper engine
temperature
Caution
Do not use anything other than a
mix of DEX-COOL coolant that
meets GM Standard
GMW3420 and clean, drinkable
water. Anything else can cause
damage to the engine cooling
system and the vehicle, which
would not be covered by the
vehicle warranty.
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
0 303.
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 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
Spilling coolant on hot engine
parts can burn you. Coolant
contains ethylene glycol and it will
burn if the engine parts are hot
enough.
{Warning
Plain water, or other liquids such
as alcohol, can boil before the
proper coolant mixture will. With
plain water or the wrong mixture,
the engine could get too hot but
(Continued)

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
320 Vehicle Care
Warning (Continued)
there would not be an overheat
warning. The engine could catch
fire and you or others could be
burned.
{Warning
Steam and scalding liquids from a
hot cooling system are under
pressure. Turning the pressure
cap, even a little, can cause them
to come out at high speed and
you could be burned. Never turn
the cap when the cooling system,
including the pressure cap, is hot.
Wait for the cooling system and
pressure cap to cool.
Caution
Failure to follow the specific
coolant fill procedure could cause
the engine to overheat and could
cause system damage. If coolant
is not visible in the surge tank,
contact your dealer.
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 withthe 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-12460269) - 2019 - CRC - 9/11/18
Vehicle Care 321
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 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 0151.
In addition, there are ENGINE
OVERHEATED STOP ENGINE,
ENGINE OVERHEATED IDLE
ENGINE, and ENGINE POWER IS
REDUCED messages in the Driver
Information Center (DIC).
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. Have the
vehicle serviced.
Caution
Do not run the engine if there is a
leak in the engine cooling system.
This can cause a loss of all
coolant and can damage the
system and vehicle. Have any
leaks fixed right away.
If Steam is Coming from the
Engine Compartment
{Warning
Steam and scalding liquids from a
hot cooling system are under
pressure. Turning the pressure
cap, even a little, can cause them
to come out at high speed and
you could be burned. Never turn
(Continued)

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
322 Vehicle Care
Warning (Continued)
the cap when the cooling system,
including the pressure cap, is hot.
Wait for the cooling system and
pressure cap to 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
0 283. 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

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
Vehicle Care 323
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.
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 0303 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
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
(Continued)

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
Vehicle Care 353
Bead:The tire bead contains
steel wires wrapped by steel
cords that hold the tire onto
the rim.
Bias Ply Tire
:A pneumatic tire
in which the plies are laid at
alternate angles less than
90 degrees to the centerline of
the tread.
Cold Tire Pressure
:The
amount of air pressure in a tire,
measured in kPa (kilopascal)
or psi (pounds per square inch)
before a tire has built up heat
from driving. See Tire Pressure
0 355.
Curb Weight
:The weight of a
motor vehicle with standard and
optional equipment including the
maximum capacity of fuel, oil,
and coolant, but without
passengers and cargo.
DOT Markings
:A code molded
into the sidewall of a tire
signifying that the tire is in
compliance with the U.S. Department of Transportation
(DOT) Motor Vehicle Safety
Standards. The DOT code
includes the Tire Identification
Number (TIN), an alphanumeric
designator which can also
identify the tire manufacturer,
production plant, brand, and
date of production.
GVWR
:Gross Vehicle Weight
Rating. See Vehicle Load Limits
0 215.
GAWR FRT
:Gross Axle Weight
Rating for the front axle. See
Vehicle Load Limits 0215.
GAWR RR
:Gross Axle Weight
Rating for the rear axle. See
Vehicle Load Limits 0215.
Intended Outboard Sidewall
:
The side of an asymmetrical tire
that must always face outward
when mounted on a vehicle.
Kilopascal (kPa)
:The metric
unit for air pressure. Light Truck (LT-Metric) Tire
:A
tire used on light duty trucks and
some multipurpose passenger
vehicles.
Load Index
:An assigned
number ranging from 1 to 279
that corresponds to the load
carrying capacity of a tire.
Maximum Inflation Pressure
:
The maximum air pressure to
which a cold tire can be inflated.
The maximum air pressure is
molded onto the sidewall.
Maximum Load Rating
:The
load rating for a tire at the
maximum permissible inflation
pressure for that tire.
Maximum Loaded Vehicle
Weight
:The sum of curb
weight, accessory weight,
vehicle capacity weight, and
production options weight.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
404 Service and Maintenance
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. SeeTire
Rotation 0362.
. Check engine oil level and oil
life percentage. If needed,
change engine oil and filter, and
reset oil life system. See Engine
Oil 0309 andEngine Oil Life
System 0311.
. Check engine coolant level. See
Cooling System 0317.
. Check windshield washer fluid
level. See Washer Fluid 0323.
. Check tire inflation pressures,
including the spare. See Tire
Pressure 0355. .
Inspect tire wear. See Tire
Inspection 0362.
. Visually check for fluid leaks.
. Inspect engine air cleaner filter.
See Engine Air Cleaner/Filter
0 316.
. Inspect brake system. See
Exterior Care 0391.
. Visually inspect steering,
suspension, and chassis
components for damage,
including cracks or tears in the
rubber boots, loose or missing
parts, or signs of wear at least
once a year. See Exterior Care
0 391. Lubricate the suspension
and steering components at
least every other oil change (if
equipped with grease fittings). .
Inspect power steering for
proper attachment, connections,
binding, leaks, cracks,
chafing, etc.
. Visually inspect halfshafts and
drive shafts for excessive wear,
lubricant leaks, and/or damage
including: tube dents or cracks,
constant velocity joint or
universal joint looseness,
cracked or missing boots, loose
or missing boot clamps, center
bearing excessive looseness,
loose or missing fasteners, and
axle seal leaks.
. Check restraint system
components. See Safety System
Check 092.
. Visually inspect fuel system for
damage or leaks.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
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Service and Maintenance 413
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 (6-Speed Transmission) DEXRON-VI Automatic Transmission Fluid.
Automatic Transmission (10-Speed Transmission) DEXRON ULV Automatic Transmission Fluid (GM Part No. 19352619, in
Canada 19352620).
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 Cooling System 0317.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity
grade. ACDelco dexos1 full synthetic is recommended. See Engine Oil
0 309.
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. 19353126, in Canada 19353127).

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-12460269) - 2019 - CRC - 9/11/18
Index 449
ChargingWireless . . . . . . . . . . . . . . . . . . . . . . 141
Charging System Light . . . . . . . . . 155
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 155
Ignition Transmission Lock . . . 329
Child Restraints Infants and Young Children . . . 108
Lower Anchors and Tethersfor Children . . . . . . . . . . . . . . . . . .114
Older Children . . . . . . . . . . . . . . . . 107
Securing . . . . . . . . . . . . 122, 124, 125
Systems . . . . . . . . . . . . . . . . . . . . . . . 111
Child-View Mirror . . . . . . . . . . . . . . . . 59
Circuit Breakers . . . . . . . . . . . . . . . . 337
Cleaning Exterior Care . . . . . . . . . . . . . . . . . 391
Interior Care . . . . . . . . . . . . . . . . . . 396
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . 194
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Cluster, Instrument . . . . . . . . . . . . . 145
Collision Damage Repair . . . . . . . 428
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . 128
Compass . . . . . . . . . . . . . . . . . . . . . . . 138 Connected Services
Connections . . . . . . . . . . . . . . . . . . 444
Diagnostics . . . . . . . . . . . . . . . . . . . 446
Navigation . . . . . . . . . . . . . . . . . . . . 443
Connections Connected Services . . . . . . . . . . 444
Control
Hill Descent . . . . . . . . . . . . . . . . . . 248
Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . 246
Control Light
Hill Descent . . . . . . . . . . . . . . . . . . 158
Control of a Vehicle . . . . . . . . . . . . . 204
Convenience Net . . . . . . . . . . . . . . . 131
Convex Mirrors . . . . . . . . . . . . . . . . . . 56
Coolant Engine Temperature Gauge . . 151
Cooling . . . . . . . . . . . . . . . . . . . . 194, 198
Cooling System . . . . . . . . . . . . . . . . . 317
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . 427
Cruise Control . . . . . . . . . . . . . . . . . . 250 Light . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Cruise Control, Adaptive . . . . . . . . 252
Cupholders . . . . . . . . . . . . . . . . . . . . . 128
Customer Assistance . . . . . . . . . . . 424 Offices . . . . . . . . . . . . . . . . . . . . . . . . 423 Customer Assistance (cont'd)
Text Telephone (TTY)
Users . . . . . . . . . . . . . . . . . . . . . . . 424
Customer Information
Publications OrderingInformation . . . . . . . . . . . . . . . . . . 431
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . 421
D
Damage Repair, Collision . . . . . . . 428
Danger, Warning, and Caution . . . . 3
Data CollectionInfotainment System . . . . . . . . . . 434
OnStar . . . . . . . . . . . . . . . . . . . . . . . 434
Data Recorders, Event . . . . . . . . . 433
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 186
Defensive Driving . . . . . . . . . . . . . . . 204
Delayed Locking . . . . . . . . . . . . . . . . . 45
Diagnostics
Connected Services . . . . . . . . . . 446
Distracted Driving . . . . . . . . . . . . . . . 203
Dome Lamps . . . . . . . . . . . . . . . . . . . 189
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . 162
Delayed Locking . . . . . . . . . . . . . . . . 45
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-12460269) - 2019 - CRC - 9/11/18
450 Index
Door (cont'd)Power Locks . . . . . . . . . . . . . . . . . . . . 45
Drive Belt Routing, Engine . . . . . . 420
Driver Assistance Systems . . . . . 259
Driver Information Center (DIC) . . . . . . . . . . . . . 163, 164
Driving Assistance Systems . . . . . . . . . . 264
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . 278
Defensive . . . . . . . . . . . . . . . . . . . . . 204
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 204
For Better Fuel Economy . . . . . . . 27
Hill and Mountain Roads . . . . . . 212
If the Vehicle is Stuck . . . . . . . . . 214
Loss of Control . . . . . . . . . . . . . . . 206
Off-Road . . . . . . . . . . . . . . . . . . . . . 206
Off-Road Recovery . . . . . . . . . . . 205
Vehicle Load Limits . . . . . . . . . . . 215
Wet Roads . . . . . . . . . . . . . . . . . . . .211
Winter . . . . . . . . . . . . . . . . . . . . . . . . 212
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 194
E
E85 or FlexFuel . . . . . . . . . . . . . . . . 275
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 298 Electrical System
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 338
Fuses and Circuit Breakers . . . 337
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . 342, 345
Overload . . . . . . . . . . . . . . . . . . . . . 337
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 347
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . 436
Engine Air Cleaner/Filter . . . . . . . . . . . . . 316
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 155
Compartment Overview . . . . . . . 303
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 151
Cooling System . . . . . . . . . . . . . . . 317
Drive Belt Routing . . . . . . . . . . . . 420
Exhaust . . . . . . . . . . . . . . . . . . . . . . 230
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
Heater . . . . . . . . . . . . . . . . . . . . . . . . 226
Oil Life System . . . . . . . . . . . . . . . .311
Oil Pressure Gauge . . . . . . . . . . 150
Overheating . . . . . . . . . . . . . . . . . . 321
Power Messages . . . . . . . . . . . . . 171
Running While Parked . . . . . . . . 231 Engine (cont'd)
Starting . . . . . . . . . . . . . . . . . . . . . . . 224
Entry Lighting . . . . . . . . . . . . . . . . . . . 190
Equipment, Towing . . . . . . . . . . . . . 289
Event Data Recorders . . . . . . . . . . 433
Exit Lighting . . . . . . . . . . . . . . . . . . . . 191
Extended Parking . . . . . . . . . . . . . . . 230
Extender, Seat Belt . . . . . . . . . . . . . . 92
Exterior Lamp Controls . . . . . . . . . 183
Exterior Lamps Off Reminder . . . 185
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . . . 192
F
FanEngine . . . . . . . . . . . . . . . . . . . . . . . . 322
Features Memory . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filter,
Engine Air Cleaner . . . . . . . . . . . 316
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 186
Flashers, Hazard Warning . . . . . . 187
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 369 Changing . . . . . . . . . . . . . . . . . . . . . 371
FlexFuel E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Floor Console Storage . . . . . . . . . . 131
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 399