2023 CHEVROLET SILVERADO 1500 radiator

Chevrolet Silverado 1500 Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico/Paraguay-16515119) - 2023 - CRC - 6/2/22
Driving and Operating 329
To safely carry a snow plow on the vehicle:
.With a snow plow attached, the engine
coolant temperature gauge may show a
higher temperature than while driving
without one. The snow plow could block
the airflow to the radiator. This could be
more noticeable as vehicle speed
increases. At speeds above 72 km/h
(45 mph), this may cause the engine
coolant to overheat. Move or angle the
snow plow blade to allow increased
airflow to the radiator.
.To increase the airflow, move the snow
plow blade position.
.If driving more than 24 km/h (15 mph),
angle the plow blade position.
.Make sure the weight on the front and
rear axles does not exceed the axle rating
for each.
.Follow the snowplow manufacturer’s
recommendations for any rear ballast that
may be required. Rear ballast may be
required to ensure a proper front and rear
weight distribution ratio even though the
actual weight at the front axle may be
less than the front axle rating.
.The snowplow manufacturer or installer
can assist in determining the amount of
rear ballast required to ensure that thevehicle with the attached snowplow does
not exceed the GVW rating, the front and
rear axle ratings, or the front and rear
weight distribution ratio (refer to the GM
Upfitter Manual).
Front axle reserve capacity is the difference
between the Front Gross Axle Weight
Rating (GAWR) and the front axle weight of
the vehicle with full fuel, passengers, and
any other cargo. This is the amount of
weight that can be added to the front axle
before reaching the Front GAWR.
To calculate the amount of weight any front
accessory, such as a snow plow, is adding to
the front axle, use this formula:
(W x (A + W.B.)) /W.B.= Weight the accessory
is adding to the front axle.
Where: IW = Weight of added accessory
IA = Distance that the accessory is in
front of the front axle
IW.B. = Vehicle Wheelbase
For example, adding a 318 kg (700 lb) snow
plow actually adds more than 318 kg (700 lb)
to the front axle. Using the formula, if the
snow plow is 122 cm (4 ft) in front of the
front axle and the wheelbase is 305 cm
(10 ft), then: IW = 318 kg (700 lb)
IA = 122 cm (4 ft)
IW.B. = 305 cm (10 ft)
(W x (A + W.B.)/W.B. = (318 x (122 + 305))/305
= 445 kg (980 lb)
This means if the front axle reserve capacity
is more than 445 kg (980 lb), the snow plow
could be added without exceeding the
front GAWR.
Heavier equipment can be added on the
front of the vehicle if less cargo or fewer
passengers are carried, or by positioning
cargo toward the rear. This reduces the load

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
344 Vehicle Care
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. 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 driver side of the
vehicle. See
Engine Compartment Overview
0 335.
The vehicle must be on a level surface when
checking the coolant level.
All Engines 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 indicated 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 indicated mark, see the
following sections on how to add coolant to
the coolant surge tank following.
Automatic Coolant Service Fill
Instructions (L3B Engine)
This feature assists in filling and removing
air from the cooling system after service of
components or when coolant is added after
being too low.
To activate the fill and air removal process:
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.

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
Index 457
Phone (cont'd)Bluetooth . . . . . . . . . . . . . . . . . . . . . 164, 165, 168
Pickup Conversion to Chassis Cab . . . . . . . . 330
Port USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Positioning Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Power Assist Steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Protection, Battery . . . . . . . . . . . . . . . . . . . . . 146
Retained Accessory (RAP) . . . . . . . . . . . . . . 216
Seat Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 45
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Pregnancy, Using Seat Belts . . . . . . . . . . . . . . 58
Privacy Vehicle Data Recording . . . . . . . . . . . . . . . . 439
Problems with Route Guidance . . . . . . . . . . 162
Program Courtesy Transportation . . . . . . . . . . . . . . . 435
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . . . 295
Proposition 65 Warning California . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Proposition 65 Warning, California . . . . . . . 399
Publication Ordering Information . . . . . . . . 437R
Radiator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
Radio
AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . 153, 155
Data System (RDS) . . . . . . . . . . . . . . . . . . . . . 156
Frequency Statement . . . . . . . . . . . . . . . . . . 438
Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Satellite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Reading Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
Camera Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Cross Traffic Alert (RCTA) System . . . . . . 284
Heated Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Locking Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
Pedestrian Alert . . . . . . . . . . . . . . . . . . . . . . . 283
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Vision Camera (RVC) . . . . . . . . . . . . . . . . . . . 274
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Rearview Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . .35 Automatic Dimming . . . . . . . . . . . . . . . . . . . . 35
Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . . . 45
Recognition Voice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Recommended Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
Recommended Fluids and Lubricants . . . . . .421 Records
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 424
Recreational Vehicle Towing . . . . . . . . . . . . . 403
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 433
Remote Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Key Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Vehicle Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Replacement Glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 422
Replacing Airbag System . . . . . . . . . . . . . . . . . . . . . . . . . . 69
LATCH System Parts After a Crash . . . . . . 86
Seat Belt System Parts after a Crash . . . . 59
Reporting Safety Defects Canadian Government . . . . . . . . . . . . . . . . . 438
General Motors . . . . . . . . . . . . . . . . . . . . . . . . 439
U.S. Government . . . . . . . . . . . . . . . . . . . . . . . 438
Restraints Where to Put . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Retained Accessory Power (RAP) . . . . . . . . . 216
Reverse Tilt Mirrors . . . . . . . . . . . . . . . . . . . . . . . .35
Ride Control Systems
Enhanced Traction System (ETS) . . . . . . . 243