2022 CHEVROLET SUBURBAN overheating

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15555985) - 2022 - CRC - 12/3/21
320 Vehicle Care
6.2L V8 Engine
1. Engine Electric Cooling Fans (Outof View)
2. Coolant Surge Tank and Pressure Cap
{Warning
An underhood electric fan can start up
even when the engine is not running and
can cause injury. Keep hands, clothing,
and tools away from any underhood
electric fan.
{Warning
Do not touch heater, radiator, a/c pipes
or hoses, or other engine parts. They can
be very hot and can burn you. Do not
run the engine if there is a leak; all
coolant could leak out. That could cause
an engine fire and can burn you. Fix any
leak before driving the vehicle.
Engine Coolant
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 0322.
What to Use
{Warning
Plain water, or other liquids such as
alcohol, can boil before the proper
coolant mixture will. With plain water or
(Continued)
Warning (Continued)
the wrong mixture, the engine could get
too hot but there would not be an
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. 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
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.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15555985) - 2022 - CRC - 12/3/21
322 Vehicle Care
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 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 indicated 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
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.
The vehicle has several indicators to warn of
engine overheating.
There is a coolant temperature gauge and a
engine coolant temperature warning light in
the vehicle's instrument cluster. See Engine
Coolant Temperature Gauge 0110 andEngine
Coolant Temperature Warning Light 0119.
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. See Roadside Assistance Program
0 409.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15555985) - 2022 - CRC - 12/3/21
Vehicle Care 323
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 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; seeTrailer Towing0283.
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.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15555985) - 2022 - CRC - 12/3/21
Vehicle Care 343
FusesUsage
F45 AFL AHL –Adaptive
Forward Lighting/
Automatic Headlamp
Leveling
F46 Rear HVAC Blower Motor F47 LH CINCH Latch –Left Hand
Cinch Latch
F48 Power Seat Recline Module
F49 Lift Glass F50 Driver Power Seat F51 Power Liftgate Module
F52 Passenger Power Seat
Relays Usage
K53 –
K54 –
K55 L/GLASSWheels and Tires
Tires
Every new GM vehicle has high-quality
tires made by a leading tire
manufacturer. See the warranty manual
for information regarding the tire
warranty and where to get service. For
additional information refer to the tire
manufacturer.
{Warning
.Poorly maintained and improperly
used tires are dangerous.
.Overloading the tires can cause
overheating as a result of too
much flexing. There could be a
blowout and a serious crash. See
Vehicle Load Limits 0214.
.Underinflated tires pose the same
danger as overloaded tires. The
resulting crash could cause serious
injury. Check all tires frequently to
(Continued)
Warning (Continued)
maintain the recommended
pressure. Tire pressure should be
checked when the tires are cold.
.Overinflated tires are more likely
to be cut, punctured, or broken by
a sudden impact —such as when
hitting a pothole. Keep tires at the
recommended pressure.
.Worn or old tires can cause a
crash. If the tread is badly worn,
replace them.
.Replace any tires that have been
damaged by impacts with
potholes, curbs, etc.
.Improperly repaired tires can cause
a crash. Only your dealer or an
authorized tire service center
should repair, replace, dismount,
and mount the tires.
(Continued)

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15555985) - 2022 - CRC - 12/3/21
Vehicle Care 349
Vehicle Maximum Load on the Tire:
Load on an individual tire due to curb
weight, accessory weight, occupant
weight, and cargo weight.
Vehicle Placard
:A label permanently
attached to a vehicle showing the
vehicle capacity weight and the original
equipment tire size and recommended
inflation pressure. See “Tire and Loading
Information Label” underVehicle Load
Limits 0214.
Tire Pressure
Tires need the correct amount of air
pressure to operate effectively.
{Warning
Neither tire underinflation nor
overinflation is good. Underinflated
tires, or tires that do not have
enough air, can result in:
.Tire overloading and overheating,
which could lead to a blowout.
.Premature or irregular wear.
.Poor handling.
(Continued)
Warning (Continued)
.Reduced fuel economy.
Overinflated tires, or tires that have
too much air, can result in:
.Unusual wear.
.Poor handling.
.Rough ride.
.Needless damage from road
hazards.
The Tire and Loading Information label
on the vehicle indicates the original
equipment tires and the correct cold
tire inflation pressures. The
recommended pressure is the minimum
air pressure needed to support the
vehicle's maximum load carrying
capacity.
For additional information regarding
how much weight the vehicle can carry,
and an example of the Tire and Loading
Information label, see Vehicle Load
Limits 0214. How the vehicle is loaded
affects vehicle handling and ride comfort. Never load the vehicle with
more weight than it was designed to
carry.
When to Check
Check the pressure of the tires once a
month or more.
Do not forget the spare tire, if the
vehicle has one. See
Full-Size Spare Tire
0 373 for additional information.
How to Check
Use a good quality pocket-type gauge
to check tire pressure. Proper tire
inflation cannot be determined by
looking at the tire. Check the tire
inflation pressure when the tires are
cold, meaning the vehicle has not been
driven for at least three hours or no
more than 1.6 km (1 mi).
Remove the valve cap from the tire
valve stem. Press the tire gauge firmly
onto the valve to get a pressure
measurement. If the cold tire inflation
pressure matches the recommended
pressure on the Tire and Loading
Information label, no further adjustment

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-15555985) - 2022 - CRC - 12/3/21
428 Index
Driving (cont'd)Hill and Mountain Roads . . . . . . . . . . . . . . . 211
If the Vehicle is Stuck . . . . . . . . . . . . . . . . . 213
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 207
Off-Road . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 206
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 214
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Dynamic Fuel Management . . . . . . . . . . . . . . 222
E
Electric Brake Boost . . . . . . . . . . . . . . . . . . . . . . . 231
Electric Parking Brake . . . . . . . . . . . . . . . . . . . . 232
Electric Parking Brake Light . . . . . . . . . . . . . . . 116
Electrical Equipment, Add-On . . . . . . . . . . . . 307
Electrical System Engine Compartment Fuse Block . . . . . . . 335
Fuses and Circuit Breakers . . . . . . . . . . . . . 334
Instrument Panel Fuse Block . . . . . . . . . . . 339
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332
Rear Compartment Fuse Block . . . . . . . . . 341
Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418 Engine
Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . 318
Check Light (Malfunction Indicator) . . . . . 114
Compartment Overview . . . . . . . . . . . . . . . . 312
Coolant Temperature Gauge . . . . . . . . . . . 110
Coolant Temperature Warning Light . . . . 119
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . 319
Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . 405
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 316
Oil Pressure Gauge . . . . . . . . . . . . . . . . . . . . 109
Oil Pressure Light . . . . . . . . . . . . . . . . . . . . . . 122
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
Power Messages . . . . . . . . . . . . . . . . . . . . . . . 132
Running While Parked . . . . . . . . . . . . . . . . . 223
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Engine Air Filter Life System . . . . . . . . . . . . . .318
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Equipment, Towing . . . . . . . . . . . . . . . . . . . . . . 287
Event Data Recorders . . . . . . . . . . . . . . . . . . . . 416
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Extended Parking . . . . . . . . . . . . . . . . . . . . . . . . 223
Extender, Seat Belt . . . . . . . . . . . . . . . . . . . . . . . .57
Exterior Lamp Controls . . . . . . . . . . . . . . . . . . . . 141
Exterior Lamps Off Reminder . . . . . . . . . . . . .142
Exterior Lighting Battery Saver . . . . . . . . . . .147
F
Fan Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Filter, Engine Air Cleaner . . . . . . . . . . . . . . . . . . . . . 318
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143
Flashers, Hazard Warning . . . . . . . . . . . . . . . . 144
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 362 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Floor Console Storage . . . . . . . . . . . . . . . . . . . . . .91
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 388
Fluid
Automatic Transmission . . . . . . . . . . . . . . . . 317
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Forward Collision Alert (FCA) System . . . . 267
Four Corner Air Suspension Light . . . . . . . . 120
Four Corner Air Suspension System . . . . . . 240
Four-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
Drive Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Drive System . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414
Front Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-15555985) - 2022 - CRC - 12/3/21
432 Index
OutletsPower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Overheating, Engine . . . . . . . . . . . . . . . . . . . . . 322
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 Instrument Panel . . . . . . . . . . . . . . . . . . . . . . . . 4
P
ParkShifting Into . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
Shifting Out of . . . . . . . . . . . . . . . . . . . . . . . . 222
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . . 256, 263
Parking Brake and P (Park) MechanismCheck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Over Things That Burn . . . . . . . . . . . . . . . . . 222
Parking or Backing
Assistance Systems . . . . . . . . . . . . . . . . . . . . 256
Passenger Airbag Status Indicator . . . . . . . . . 113
Passenger Compartment Air Filter . . . . . . . 200
Passenger Sensing System . . . . . . . . . . . . . . . . 64
Pedestrian Ahead Indicator . . . . . . . . . . . . . . . 118
Perchlorate Materials Requirements, California . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 Phone
Apple CarPlay and
Android Auto . . . . . . . . . . . . . . . . . . . 180, 182
Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . 173, 177
Port USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Positioning
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Protection, Battery . . . . . . . . . . . . . . . . . . . . . 147
Retained Accessory (RAP) . . . . . . . . . . . . . . 221
Seat Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 37
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Power Assist Steps . . . . . . . . . . . . . . . . . . . . . . . . .23
Pregnancy, Using Seat Belts . . . . . . . . . . . . . . 56
Privacy Vehicle Data Recording . . . . . . . . . . . . . . . . 415
Problems with Route Guidance . . . . . . . . . . . 171
Program
Courtesy Transportation . . . . . . . . . . . . . . . . 411
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . . . 277
Proposition 65 Warning, California . . . . . . . . . . . . . . . . . . . . . . . . . .327, 373, Back Cover
Publication Ordering Information . . . . . . . . .413
R
Radio Data System (RDS) . . . . . . . . . . . . . . . . . 157
Radio Frequency Statement . . . . . . . . . . . . . . 414
Radio Reception . . . . . . . . . . . . . . . . . . . . . . . . . .158
Radios AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . 154, 155
Satellite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Reading Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Rear Seat Infotainment (RSI) System . . . . . . . . . 161
Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328 Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Rear Camera Mirror . . . . . . . . . . . . . . . . . . . . . . . 28
Rear Climate Control System . . . . . . . . . . . . 198
Rear Cross Traffic Alert System . . . . . . . . . . 266
Rear Pedestrian Alert . . . . . . . . . . . . . . . . . . . . 265
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Rear Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Rear Vision Camera (RVC) . . . . . . . . . . . . . . . . 256
Rear Window Washer/Wiper . . . . . . . . . . . . . 96
Rearview Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 28
Automatic Dimming . . . . . . . . . . . . . . . . . . . . 28
Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . . . 38
Recognition
Voice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Recommended Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276, 277