2023 CHEVROLET SILVERADO 1500 overheating

Chevrolet Silverado 1500 Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico/Paraguay-16515119) - 2023 - CRC - 6/2/22
Vehicle Care 331
Vehicle Care
General Information
General Information . . . . . . . . . . . . . . . . . . . 332
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . . 332
Accessories and Modifications . . . . . . . . . 332
Vehicle Checks
Doing Your Own Service Work . . . . . . . . . 333
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
Engine Compartment Overview . . . . . . . . 335
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
Engine Oil Life System . . . . . . . . . . . . . . . . 340
Automatic Transmission Fluid . . . . . . . . . 340
Engine Air Filter Life System . . . . . . . . . . . 341
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . 341
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . 343
Engine Overheating . . . . . . . . . . . . . . . . . . . 346
Overheated Engine Protection Operating Mode . . . . . . . . . . . . . . . . . . . . . 347
Engine Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 348
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
Brake Pad Life System . . . . . . . . . . . . . . . . 349
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350
Battery - North America . . . . . . . . . . . . . . . 351
Four-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . 353
Front Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354 Automatic Transmission Shift Lock
Control Function Check (Mechanical
Shifter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
Park Brake and P (Park) Mechanism Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
Wiper Blade Replacement . . . . . . . . . . . . . 355
Glass Replacement . . . . . . . . . . . . . . . . . . . . . 355
Windshield Replacement . . . . . . . . . . . . . . . 355
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . 356Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . . . . . . . 356
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . 357
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . 357
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 357
Headlamps, Front Turn Signal, Sidemarker, and Parking Lamps . . . . . . 357
Taillamps, Turn Signal, Stoplamps, and Back-Up Lamps . . . . . . . . . . . . . . . . . . . . . . 358
Center High-Mounted Stoplamp (CHMSL) and Cargo Lamp . . . . . . . . . . . . 359
License Plate Lamp . . . . . . . . . . . . . . . . . . . . 359
Electrical System
Electrical System Overload . . . . . . . . . . . . 360
Fuses and Circuit Breakers . . . . . . . . . . . . . 361
Engine Compartment Fuse Block . . . . . . 362
Instrument Panel Fuse Block (Left) . . . . 365
Instrument Panel Fuse Block (Right) . . . 367
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 369
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . 370
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 370
All-Terrain Tires . . . . . . . . . . . . . . . . . . . . . . . 370
Tire Sidewall Labeling . . . . . . . . . . . . . . . . . . 371
Tire Designations . . . . . . . . . . . . . . . . . . . . . . 372
Tire Terminology and Definitions . . . . . . 374
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . 375
Tire Pressure Monitor System . . . . . . . . . 377
Tire Pressure Monitor Operation . . . . . . . 377
Tire Inspection . . . . . . . . . . . . . . . . . . . . . . . . . 381
Tire Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . 382
When It Is Time for New Tires . . . . . . . . 383
Buying New Tires . . . . . . . . . . . . . . . . . . . . . 383
Different Size Tires and Wheels . . . . . . . 385
Uniform Tire Quality Grading . . . . . . . . . 385
Wheel Alignment and Tire Balance . . . . 386
Wheel Replacement . . . . . . . . . . . . . . . . . . . 386
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . 387
If a Tire Goes Flat . . . . . . . . . . . . . . . . . . . . . 387
Tire Changing . . . . . . . . . . . . . . . . . . . . . . . . . 389
Full-Size Spare Tire . . . . . . . . . . . . . . . . . . . . 399
Jump Starting
Jump Starting - North America . . . . . . . . 399
Towing the Vehicle
Transporting a Disabled Vehicle . . . . . . . 402
Recreational Vehicle Towing . . . . . . . . . . . 403

Chevrolet Silverado 1500 Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico/Paraguay-16515119) - 2023 - CRC - 6/2/22
Vehicle Care 343
Cooling System
If the vehicle has the Duramax diesel
engine, see the Duramax diesel supplement.
The cooling system allows the engine to
maintain the correct working temperature.
2.7L L4 Engine (L3B)
5.3L V8 Engine (L84) Shown, 6.2L V8 Engine(L87) Similar
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 0346.
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)

Chevrolet Silverado 1500 Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico/Paraguay-16515119) - 2023 - CRC - 6/2/22
346 Vehicle Care
1. Remove the coolant surge tank pressurecap 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 0112.
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. See
Roadside Assistance Program
0 433.
If the decision is made to lift the hood,
make sure the vehicle is parked on a level
surface.
2.7L L4, 5.3L V8, and 6.2L V8 Engines
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.

Chevrolet Silverado 1500 Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico/Paraguay-16515119) - 2023 - CRC - 6/2/22
Vehicle Care 369
FusesUsage
F33 Body Control Module 4
F34 –
F40 –
F41 –
F42 Electric Park Brake Switch
F43 –
F44 Shifter Interface Board F45 Radio Low
F46 –
F47 –
F48 Transmission Control Module
F49 Body Control Module 1 F50 –
F51 Battery 1
F52 Battery 2
F53 –
F54 Sunroof F55 Driver Power Seat
F56 DC/DC Converter Battery 1 Fuses
Usage
F57 DC/DC Converter Battery 2
F58 –
Circuit
Breakers Usage
1 Accessory Power Outlet 1
2 –
3 –
4 –
Relays Usage
K1 –
K2 Retained Accessory Power/ Accessory 1
K4 –
K5 –
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 Limits
0204.
.Underinflated tires pose the same
danger as overloaded tires. The
resulting crash could cause serious
injury. Check all tires frequently to
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.
(Continued)

Chevrolet Silverado 1500 Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico/Paraguay-16515119) - 2023 - CRC - 6/2/22
376 Vehicle Care
{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 for
internal combustion engine
vehicles
.Reduced range for electric vehicles
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 0204. 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, if the vehicle
has one. See Full-Size Spare Tire 0399
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
is necessary. If the inflation pressure is
low, add air until the recommended
pressure is reached. If the inflation
pressure is high, press on the metal
stem in the center of the tire valve to
release air.
Re-check the tire pressure with the tire
gauge.

Chevrolet Silverado 1500 Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico/Paraguay-16515119) - 2023 - CRC - 6/2/22
452 Index
DiagnosticsConnected Services . . . . . . . . . . . . . . . . . . . . 448
Differential, Limited-Slip . . . . . . . . . . . . . . . . . 243
Disabled Vehicle Transporting . . . . . . . . . . . . . . . . . . . . . . . . . . . 402
Distracted Driving . . . . . . . . . . . . . . . . . . . . . . . . 195
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . 20
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Drive Belt Routing, Engine . . . . . . . . . . . . . . . 429
Drive Systems Four-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . 353
Driver
Assistance Systems . . . . . . . . . . . . . . . . . . . . 272
Information Center (DIC) . . . . . . . . . . . 126, 127
Mode Control . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Mode Control Light . . . . . . . . . . . . . . . . . . . . 122
Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Driving Assistance Systems . . . . . . . . . . . . . . . . . . . . 284
Better Fuel Economy . . . . . . . . . . . . . . . . . . . 194
Characteristics and Towing Tips . . . . . . . . 299
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Distracted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Hill and Mountain Roads . . . . . . . . . . . . . . 202 Driving (cont'd)
If the Vehicle is Stuck . . . . . . . . . . . . . . . . . 203
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 197
Off-Road . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 197
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 204
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Dual Automatic Climate Control System . . . . 187
E
ElectricBrake Boost . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Parking Brake Light . . . . . . . . . . . . . . . . . . . . . 118
Electrical Equipment, Add-On . . . . . . . . . . . . . . . . . . . . 328
System Overload . . . . . . . . . . . . . . . . . . . . . . 360
Electrical System Engine Compartment Fuse Block . . . . . . . 362
Fuses and Circuit Breakers . . . . . . . . . . . . . 361
Instrument Panel Fuse Block . . . . . . 365, 367
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 442
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . 341 Engine (cont'd)
Air Filter Life System . . . . . . . . . . . . . . . . . . 341
Check Light (Malfunction Indicator) . . . . . 116
Compartment Overview . . . . . . . . . . . . . . . . 335
Coolant Temperature Gauge . . . . . . . . . . . . 112
Coolant Temperature Warning Light . . . 122
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . 343
Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . 429
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 340
Oil Pressure Gauge . . . . . . . . . . . . . . . . . . . . . 111
Oil Pressure Light . . . . . . . . . . . . . . . . . . . . . . 123
Overheated Protection
Operating Mode . . . . . . . . . . . . . . . . . . . . . 347
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
Power Messages . . . . . . . . . . . . . . . . . . . . . . . 133
Running While Parked . . . . . . . . . . . . . . . . . 220
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . .145
Equipment, Towing . . . . . . . . . . . . . . . . . . . . . . 307
Event Data Recorders . . . . . . . . . . . . . . . . . . . . 440
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145
Extended Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . .32
Extended Parking . . . . . . . . . . . . . . . . . . . . . . . . 219
Extender, Seat Belt . . . . . . . . . . . . . . . . . . . . . . . 58

Chevrolet Silverado 1500 Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico/Paraguay-16515119) - 2023 - CRC - 6/2/22
456 Index
Memory Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
MessagesEngine Power . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Vehicle Speed . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Mirrors Automatic Dimming . . . . . . . . . . . . . . . . . . . . 34
Automatic Dimming Rearview . . . . . . . . . . 35
Blind Spot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Convex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Interior Rearview . . . . . . . . . . . . . . . . . . . . . . . 35
Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Manual Rearview . . . . . . . . . . . . . . . . . . . . . . . 35
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Rear Camera . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Tilt in Reverse . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Trailer Tow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Mode Driver Control . . . . . . . . . . . . . . . . . . . . . . . . . 240
Monitor System, Tire Pressure . . . . . . . . . . . 377
Multi-band Antenna . . . . . . . . . . . . . . . . . . . . . . 157
Multi-Point Vehicle Inspection (MPVI) . . . . 419
N
Navigation Connected Services . . . . . . . . . . . . . . . . . . . . 446 Navigation (cont'd)
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Using the System . . . . . . . . . . . . . . . . . . . . . . 159
New Vehicle Break-In . . . . . . . . . . . . . . . . . . . . 210
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Off-Road Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
Engine Oil Life System . . . . . . . . . . . . . . . . . 340
Engine Oil Pressure Gauge . . . . . . . . . . . . . . 111
Pressure Light . . . . . . . . . . . . . . . . . . . . . . . . . 123
Older Children, Restraints . . . . . . . . . . . . . . . . . 70
Online Account . . . . . . . . . . . . . . . . . . . . . . . . . . 432
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 440 Additional Information . . . . . . . . . . . . . . . . . 442
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 441
OnStar Emergency . . . . . . . . . . . . . . . . . . . . . . . 442
OnStar Security . . . . . . . . . . . . . . . . . . . . . . . . . . 442
Operating Mode Overheated Engine Protection . . . . . . . . . 347
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 Overheated Engine Protection
Operating Mode . . . . . . . . . . . . . . . . . . . . . . . 347
Overheating, Engine . . . . . . . . . . . . . . . . . . . . . 346
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . .148, 149 Instrument Panel . . . . . . . . . . . . . . . . . . . . . . . . 5
P
ParkAssist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274, 282
Shifting Into . . . . . . . . . . . . . . . . . . . . . . . 216, 217
Shifting Out of . . . . . . . . . . . . . . . . . . . . . . . . 218
Parking
Brake and P (Park) MechanismCheck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Over Things That Burn . . . . . . . . . . . . . . . . . 219
Parking or Backing
Assistance Systems . . . . . . . . . . . . . . . . . . . . 274
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . 115
Compartment Air Filter . . . . . . . . . . . . . . . . 190
Sensing System . . . . . . . . . . . . . . . . . . . . . . . . . 64
Pedestrian Ahead Indicator . . . . . . . . . . . . . . . 121
Perchlorate Materials Requirements, California . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332
Phone
Apple CarPlay andAndroid Auto . . . . . . . . . . . . . . . . . . . . 172, 173