2022 CHEVROLET SILVERADO 2500 overheating

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-15546003) - 2022 - CRC - 5/5/21
318 Vehicle Care
{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 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
If the vehicle has the Duramax diesel
engine, see the Duramax diesel supplement.
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 in the
vehicle's instrument cluster. See Engine
Coolant Temperature Gauge 0113.
In addition, there are ENGINE OVERHEATED
STOP ENGINE, ENGINE OVERHEATED IDLE
ENGINE, and ENGINE POWER IS REDUCED
messages in the Driver Information
Center (DIC).

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-15546003) - 2022 - CRC - 5/5/21
Vehicle Care 319
If the decision is made not to lift the hood
when this warning appears, get service help
right away. SeeRoadside Assistance Program
0 412.
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 fans 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 the engine or transmission detects an
impending hot fluid condition, then the
transmission may force upshifts to limit
temperatures. Downshifts may also be
prevented in this instance. Normal operation
may continue unless the display indicates
there is a hot condition and engine should
be idled.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; see Trailer Towing0278.
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

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-15546003) - 2022 - CRC - 5/5/21
344 Vehicle Care
Wheels 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 Limits0220.
.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)
Warning (Continued)
.Do not spin the tires in excess of
56 km/h (35 mph) on slippery
surfaces such as snow, mud, ice,
etc. Excessive spinning may cause
the tires to explode.
All-Season Tires
This vehicle may come with all-season tires.
These tires are designed to provide good
overall performance on most road surfaces
and weather conditions. Original equipment
tires designed to GM's specific tire
performance criteria have a TPC specification
code molded onto the sidewall. Original
equipment all-season tires can be identified
by the last two characters of this TPC code,
which will be “MS.”
Consider installing winter tires on the
vehicle if frequent driving on snow or
ice-covered roads is expected. All-season tires
provide adequate performance for most
winter driving conditions, but they may not
offer the same level of traction or
performance as winter tires on snow or
ice-covered roads. See Winter Tires0345.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-15546003) - 2022 - CRC - 5/5/21
Vehicle Care 349
for a tire's traction, temperature, and
treadwear. Ratings are determined by
tire manufacturers using government
testing procedures. The ratings are
molded into the sidewall of the tire.
SeeUniform Tire Quality Grading
0 360.
Vehicle Capacity Weight
:The number
of designated seating positions
multiplied by 68 kg (150 lb) plus the
rated cargo load. See Vehicle Load
Limits 0220.
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 0220.
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.
.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 0220. 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
0 374 for additional information.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-15546003) - 2022 - CRC - 5/5/21
Index 431
DrivingAssistance Systems . . . . . . . . . . . . . . . . . . . . 263
Better Fuel Economy . . . . . . . . . . . . . . . . . . . 210
Characteristics and Towing Tips . . . . . . . . 274
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Hill and Mountain Roads . . . . . . . . . . . . . . 218
If the Vehicle is Stuck . . . . . . . . . . . . . . . . . 219
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 213
Off-Road . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 213
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 220
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
E
E85 or FlexFuel . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Electric Parking Brake . . . . . . . . . . . . . . . . . . . . 245
Electric Parking Brake Light . . . . . . . . . . . . . . . 118
Electrical Equipment, Add-On . . . . . . . . . . . . 303
Electrical System
Engine Compartment Fuse Block . . . . . . . 336
Fuses and Circuit Breakers . . . . . . . . . . . . . 336
Instrument Panel Fuse Block . . . . . . 339, 341
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334 Electronic Stability Control (ESC) Off
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 421
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . 315
Check Light (Malfunction Indicator) . . . . . 116
Compartment Overview . . . . . . . . . . . . . . . . 310
Coolant Temperature Gauge . . . . . . . . . . . . 113
Coolant Temperature Warning Light . . . . 121
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . 316
Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . 408
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 313
Oil Pressure Gauge . . . . . . . . . . . . . . . . . . . . . 112
Oil Pressure Light . . . . . . . . . . . . . . . . . . . . . . 122
Overheated ProtectionOperating Mode . . . . . . . . . . . . . . . . . . . . . 320
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
Power Messages . . . . . . . . . . . . . . . . . . . . . . . 130
Running While Parked . . . . . . . . . . . . . . . . . 235
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Engine Air Filter Life System . . . . . . . . . . . . . .314
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Equipment, Towing . . . . . . . . . . . . . . . . . . . . . . .281
Event Data Recorders . . . . . . . . . . . . . . . . . . . . 419 Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Extended Parking . . . . . . . . . . . . . . . . . . . . . . . . 234
Extender, Seat Belt . . . . . . . . . . . . . . . . . . . . . . . .61
Exterior Cargo Lamps . . . . . . . . . . . . . . . . . . . . 144
Exterior Lamp Controls . . . . . . . . . . . . . . . . . . . 139
Exterior Lamps Off Reminder . . . . . . . . . . . . . 141
Exterior Lighting Battery Saver . . . . . . . . . . .147
F
Fan
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Filter,
Engine Air Cleaner . . . . . . . . . . . . . . . . . . . . . 315
Fixed Mast Antenna . . . . . . . . . . . . . . . . . . . . . .158
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Flashers, Hazard Warning . . . . . . . . . . . . . . . . .142
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 364
FlexFuel E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Floor Console Storage . . . . . . . . . . . . . . . . . . . . . 98
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 389
Fluid
Automatic Transmission . . . . . . . . . . . . . . . 314
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Power Steering . . . . . . . . . . . . . . . . . . . . . . . . 320
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321
Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-15546003) - 2022 - CRC - 5/5/21
Index 435
Odometer (cont'd)Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Off-Road . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .214 Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Engine Oil Life System . . . . . . . . . . . . . . . . . 313
Engine Oil Pressure Gauge . . . . . . . . . . . . . . 112
Pressure Light . . . . . . . . . . . . . . . . . . . . . . . . . 122
Older Children, Restraints . . . . . . . . . . . . . . . . . .73
Online Owner Center . . . . . . . . . . . . . . . . . . . . . 411
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 419
OnStar Additional Information . . . . . . . . . . . .421
OnStar Emergency . . . . . . . . . . . . . . . . . . . . . . . .421
OnStar Overview . . . . . . . . . . . . . . . . . . . . . . . . . 420
OnStar Security . . . . . . . . . . . . . . . . . . . . . . . . . . .421
Operating Mode Overheated Engine Protection . . . . . . . . . 320
Operation Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Overheated Engine Protection Operating Mode . . . . . . . . . . . . . . . . . . . . . . . 320
Overheating, Engine . . . . . . . . . . . . . . . . . . . . . .318
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Instrument Panel . . . . . . . . . . . . . . . . . . . . . . . . 4P
ParkShifting Into . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Shifting Out of . . . . . . . . . . . . . . . . . . . . . . . . 234
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . 253, 261
Parking
Brake and P (Park) MechanismCheck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Over Things That Burn . . . . . . . . . . . . . . . . . 234
Parking or Backing Assistance Systems . . . . . . . . . . . . . . . . . . . . 253
Passenger Airbag Status Indicator . . . . . . . . . 115
Passenger Compartment Air Filter . . . . . . . 207
Passenger Sensing System . . . . . . . . . . . . . . . . 67
Perchlorate Materials Requirements, California . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Phone Apple CarPlay and Android Auto . . . . . . . 183
Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . 178, 179
Pickup Conversion to Chassis Cab . . . . . . . . 305
Port USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Positioning Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172 Power
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Protection, Battery . . . . . . . . . . . . . . . . . . . . . 147
Retained Accessory (RAP) . . . . . . . . . . . . . . 232
Seat Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 48
Steering Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Power Assist Steps . . . . . . . . . . . . . . . . . . . . . . . . . 31
Pregnancy, Using Seat Belts . . . . . . . . . . . . . . .61
Privacy Vehicle Data Recording . . . . . . . . . . . . . . . . 418
Problems with Route Guidance . . . . . . . . . . . 172
Program Courtesy Transportation . . . . . . . . . . . . . . . 414
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . . . 269
Proposition 65 Warning, California . . . . . . . . . . . . . . . . . . . . . . . . . 324, 374, Back Cover
Publication Ordering Information . . . . . . . . 416
R
Radio
HD Radio Technology . . . . . . . . . . . . . . . . . . 156
Radio Data System (RDS) . . . . . . . . . . . . . . . . . 157
Radio Frequency Statement . . . . . . . . . . . . . . .417
Radio Reception . . . . . . . . . . . . . . . . . . . . . . . . . . 157