2021 CHEVROLET SILVERADO 1500 Service requirements

Chevrolet Silverado 1500 Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico/Paraguay-14632303) - 2021 - CRC - 11/9/20
196 Infotainment System
performance standards. Apple is not
responsible for the operation of this device
or its compliance with safety and regulatory
standards. Please note that the use of this
accessory with iPod or iPhone may affect
wireless performance. iPhone, iPod, iPod
classic, iPod nano, iPod shuffle, and iPod
touch are trademarks of Apple Inc.,
registered in the U.S. and other countries.
If you decide to continue service after your
trial, your selected subscription plan will
automatically renew thereafter. You will be
charged at then-current rates. Fees and taxes
apply. Please see the SiriusXM Customer
Agreement at siriusxm.com for complete
terms and how to cancel, which includes
calling SiriusXM at 1-866-635-2349. All fees
and programming are subject to change.
Fees and Taxes: Subscription fee, taxes, one
time activation fee, and other fees may
apply. Subscription fee is consumer only. All
fees and programming subject to change.
Subscriptions subject to CustomerAgreement available at www.siriusxm.com.
SiriusXM service is only available in the
48 contiguous United States and Canada.
In Canada: Some deterioration of service
may occur in extreme northern latitudes.
This is beyond the control of SiriusXM
Satellite Radio.
Explicit Language Notice: Channels with
frequent explicit language are indicated with
an
“XL” preceding the channel name.
Channel blocking is available for SiriusXM
Satellite Radio receivers by notifying
SiriusXM:
.USA Customers —See www.siriusxm.com
or call 1-888-601–6296.
.Canada Customers —See
www.siriusxm.ca or call 1-877-438-9677.
It is prohibited to copy, decompile,
disassemble, reverse engineer, hack,
manipulate, or otherwise make available any
technology or software incorporated in
receivers compatible with the SiriusXM
Satellite Radio System or that support the
SiriusXM website, the Online Service or any
of its content. Furthermore, the AMBER voice
compression software included in this
product is protected by intellectual property rights including patent rights, copyrights,
and trade secrets of Digital Voice
Systems, Inc.
General Requirements:
1. A License Agreement from SiriusXM is required for any product that
incorporates SiriusXM Technology and/or
for use of any of the SiriusXM marks to
be manufactured, distributed,
or marketed in the SiriusXM
Service Area.
2. For products to be distributed, marketed, and/or sold in Canada, a separate
agreement is required with Canadian
Satellite Radio Inc. (operating as SiriusXM
Canada).
TouchSense Technology and TouchSense
System 1000 Series Licensed from
Immersion Corporation. TouchSense System
1000 protected under one or more of the

Chevrolet Silverado 1500 Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico/Paraguay-14632303) - 2021 - CRC - 11/9/20
320 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . . . . . . . . . . 321
California Proposition 65 Warning . . . . . 321
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . . 321
Accessories and Modifications . . . . . . . . . 322
Vehicle Checks
Doing Your Own Service Work . . . . . . . . . 322
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
Engine Compartment Overview . . . . . . . . 324
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329
Engine Oil Life System . . . . . . . . . . . . . . . . . 331
Automatic Transmission Fluid . . . . . . . . . . 332
Engine Air Filter Life System . . . . . . . . . . . 332
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . 333
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . 334
Engine Overheating . . . . . . . . . . . . . . . . . . . . 337
Overheated Engine Protection Operating Mode . . . . . . . . . . . . . . . . . . . . . 339
Engine Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
Brake Pad Life System . . . . . . . . . . . . . . . . . 341
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
Battery - North America . . . . . . . . . . . . . . . 342 Four-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . 345
Front Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
Starter Switch Check . . . . . . . . . . . . . . . . . . 346
Automatic Transmission Shift Lock
Control Function Check . . . . . . . . . . . . . . 346
Ignition Transmission Lock Check . . . . . . 346
Park Brake and P (Park) Mechanism Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
Wiper Blade Replacement . . . . . . . . . . . . . 347
Glass Replacement . . . . . . . . . . . . . . . . . . . . 347
Windshield Replacement . . . . . . . . . . . . . . 347
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . . . . . . . 349
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . 349
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . 349
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
Headlamps, Front Turn Signal, Sidemarker, and Parking Lamps . . . . . 349
Taillamps, Turn Signal, Stoplamps, and Back-Up Lamps . . . . . . . . . . . . . . . . . . . . . . 350
Center High-Mounted Stoplamp (CHMSL) and Cargo Lamp . . . . . . . . . . . . 352
License Plate Lamp . . . . . . . . . . . . . . . . . . . . 352
Electrical System
Electrical System Overload . . . . . . . . . . . . . 352
Fuses and Circuit Breakers . . . . . . . . . . . . . 353
Engine Compartment Fuse Block . . . . . . . 353
Instrument Panel Fuse Block (Left) . . . . . 357
Instrument Panel Fuse Block (Right) . . . 358
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . . 361
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 362
All-Terrain Tires . . . . . . . . . . . . . . . . . . . . . . . 362
Tire Sidewall Labeling . . . . . . . . . . . . . . . . . 362
Tire Designations . . . . . . . . . . . . . . . . . . . . . . 364
Tire Terminology and Definitions . . . . . . 365
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . 367
Tire Pressure Monitor System . . . . . . . . . 368
Tire Pressure Monitor Operation . . . . . . 369
Tire Inspection . . . . . . . . . . . . . . . . . . . . . . . . 374
Tire Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . 374
When It Is Time for New Tires . . . . . . . . 375
Buying New Tires . . . . . . . . . . . . . . . . . . . . . 376
Different Size Tires and Wheels . . . . . . . . 377
Uniform Tire Quality Grading . . . . . . . . . . 377
Wheel Alignment and Tire Balance . . . . 379
Wheel Replacement . . . . . . . . . . . . . . . . . . . 379
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . 379
If a Tire Goes Flat . . . . . . . . . . . . . . . . . . . . . 380
Tire Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 381
Full-Size Spare Tire . . . . . . . . . . . . . . . . . . . . . 391

Chevrolet Silverado 1500 Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico/Paraguay-14632303) - 2021 - CRC - 11/9/20
Vehicle Care 321
Jump Starting
Jump Starting - North America . . . . . . . . 391
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . . . . . . . . . . 394
Recreational Vehicle Towing . . . . . . . . . . . 395
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . 398
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . 403
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 405
General Information
For service and parts needs, visit your
dealer. You will receive genuine GM parts
and GM-trained and supported service
people.
Genuine GM parts have one of these marks:
California Proposition 65 Warning
{Warning
Most motor vehicles, including this one,
as well as many of its service parts and
fluids, contain and/or emit chemicals
known to the State of California to cause(Continued)
Warning (Continued)
cancer and birth defects or other
reproductive harm. Engine exhaust, many
parts and systems, many fluids, and
some component wear by-products
contain and/or emit these chemicals. For
more information go to
www.P65Warnings.ca.gov/
passenger-vehicle.
See Battery - North America 0342 and
Jump Starting - North America 0391 and the
back cover.
California Perchlorate Materials
Requirements
Certain types of automotive applications,
such as airbag initiators, seat belt
pretensioners, and lithium batteries
contained in electronic keys, may contain
perchlorate materials. Perchlorate Material –
special handling may apply. See
www.dtsc.ca.gov/hazardouswaste/
perchlorate.

Chevrolet Silverado 1500 Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico/Paraguay-14632303) - 2021 - CRC - 11/9/20
Vehicle Care 335
{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, seeEngine Overheating 0337.
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. 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
0 324.
The vehicle must be on a level surface when
checking the coolant level.
All Engines

Chevrolet Silverado 1500 Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico/Paraguay-14632303) - 2021 - CRC - 11/9/20
378 Vehicle Care
tires with nominal rim diameters of
10 to 12 inches (25 to 30 cm), or to some
limited-production tires.
While the tires available on General
Motors passenger cars and light trucks
may vary with respect to these grades,
they must also conform to federal
safety requirements and additional
General Motors Tire Performance
Criteria (TPC) standards.
Quality grades can be found where
applicable on the tire sidewall between
tread shoulder and maximum section
width. For example:
Treadwear 200 Traction AA Temperature A
All Passenger Car Tires Must Conform to
Federal Safety Requirements In Addition
To These Grades.
Treadwear
The treadwear grade is a comparative
rating based on the wear rate of the
tire when tested under controlled
conditions on a specified government
test course. For example, a tire graded
150 would wear one and one-half (1½)times as well on the government course
as a tire graded 100. The relative
performance of tires depends upon the
actual conditions of their use, however,
and may depart significantly from the
norm due to variations in driving habits,
service practices and differences in road
characteristics and climate.
Traction
The traction grades, from highest to
lowest, are AA, A, B, and C. Those
grades represent the tire's ability to
stop on wet pavement as measured
under controlled conditions on specified
government test surfaces of asphalt and
concrete. A tire marked C may have
poor traction performance. Warning:
The traction grade assigned to this tire
is based on straight-ahead braking
traction tests, and does not include
acceleration, cornering, hydroplaning,
or peak traction characteristics.
Temperature
The temperature grades are A (the
highest), B, and C, representing the
tire's resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled conditions
on a specified indoor laboratory test
wheel. Sustained high temperature can
cause the material of the tire to
degenerate and reduce tire life, and
excessive temperature can lead to
sudden tire failure. The grade C
corresponds to a level of performance
which all passenger car tires must meet
under the Federal Motor Safety
Standard No. 109. Grades B and A
represent higher levels of performance
on the laboratory test wheel than the
minimum required by law. Warning:
The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded. Excessive
speed, underinflation, or excessive
loading, either separately or in
combination, can cause heat buildup
and possible tire failure.

Chevrolet Silverado 1500 Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico/Paraguay-14632303) - 2021 - CRC - 11/9/20
418 Service and Maintenance
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
This maintenance section applies to vehicles with a gasoline engine. If the vehicle has a diesel engine, see“Recommended Fluids and Lubricants”
in the Duramax diesel supplement.
Fluids and lubricants identified below by name or specification, including fluids or lubricants not listed here, can be obtained from your dealer.
Usage Fluid/Lubricant
Automatic Transmission (6-Speed Transmission) DEXRON-VI Automatic Transmission Fluid.
Automatic Transmission (8-Speed Transmission) DEXRON-HP Automatic Transmission Fluid.
Automatic Transmission (10-Speed Transmission) DEXRON ULV Automatic Transmission Fluid.
Chassis Lubrication Chassis 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
0 334.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1
full synthetic is recommended. See Engine Oil0329.
Front and Rear Axle Driveshaft Splines See your dealer.
Front Axle (Four-Wheel Drive) and Rear Axle See your dealer. Hydraulic Brake System DOT 4 Hydraulic Brake Fluid. See Brake Fluid0342.

Chevrolet Silverado 1500 Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico/Paraguay-14632303) - 2021 - CRC - 11/9/20
Service and Maintenance 419
UsageFluid/Lubricant
Key Lock Cylinders, Hood Hinges, Body Door Hinge Pins, Tailgate Hinge and Linkage, Fuel Door Hinge, Tailgate Handle Pivot Points, Hinges, Latch Bolt, and Linkage Multi-Purpose Lubricant, Superlube. See your dealer.
Transfer Case (Four-Wheel Drive) DEXRON-VI Automatic Transmission Fluid. Windshield Washer Automotive windshield washer fluid that meets regional freeze protection requirements.
Maintenance Replacement Parts
Replacement parts identified below by name, part number, or specification can be obtained from your dealer.
If the vehicle has a diesel engine, see the Duramax diesel supplement.
Part GM Part Number ACDelco Part Number
Engine Air Cleaner/Filter
IWith high capacity air cleaner 84121219 A3244C
IWithout high capacity air cleaner 84121217 A3246C

Chevrolet Silverado 1500 Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico/Paraguay-14632303) - 2021 - CRC - 11/9/20
434 Customer Information
well as a signed and completed rental
agreement and meet state/provincial, local,
and rental vehicle provider requirements.
Requirements vary and may include
minimum age requirements, insurance
coverage, credit card, etc. Additional fees
such as fuel, rental vehicle insurance, taxes,
levies, usage fees, excessive mileage,
or rental usage beyond the completion of
the repair are also your responsibility.
It may not be possible to provide a like
vehicle as a courtesy rental.
Additional Program Information
All program options, such as shuttle service,
may not be available at every dealer.
Contact your dealer for specific availability.
General Motors reserves the right to
unilaterally modify, change, or discontinue
Courtesy Transportation at any time and to
resolve all questions of claim eligibility
pursuant to the terms and conditions
described herein at its sole discretion.
Collision Damage Repair
If the vehicle is involved in a collision and it
is damaged, have the damage repaired by a
qualified technician using the proper
equipment and quality replacement parts.Poorly performed collision repairs diminish
the vehicle resale value, and safety
performance can be compromised in
subsequent collisions.
Collision Parts
Genuine GM Collision parts are new parts
made with the same materials and
construction methods as the parts with
which the vehicle was originally built.
Genuine GM Collision parts are the best
choice to ensure that the vehicle's designed
appearance, durability, and safety are
preserved. The use of Genuine GM parts can
help maintain the GM New Vehicle Limited
Warranty.
Recycled original equipment parts may also
be used for repair. These parts are typically
removed from vehicles that were total losses
in prior crashes. In most cases, the parts
being recycled are from undamaged sections
of the vehicle. A recycled original equipment
GM part may be an acceptable choice to
maintain the vehicle's originally designed
appearance and safety performance;
however, the history of these parts is not
known. Such parts are not covered by the
GM New Vehicle Limited Warranty, and any
related failures are not covered by that
warranty.Aftermarket collision parts are also available.
These are made by companies other than
GM and may not have been tested for the
vehicle. As a result, these parts may fit
poorly, exhibit premature durability/
corrosion problems, and may not perform
properly in subsequent collisions.
Aftermarket parts are not covered by the
GM New Vehicle Limited Warranty, and any
vehicle failure related to such parts is not
covered by that warranty.
Repair Facility
GM also recommends that you choose a
collision repair facility that meets your
needs before you ever need collision repairs.
Your dealer may have a collision repair
center with GM-trained technicians and
state-of-the-art equipment, or be able to
recommend a collision repair center that has
GM-trained technicians and comparable
equipment.
Insuring the Vehicle
Protect your investment in the GM vehicle
with comprehensive and collision insurance
coverage. There are significant differences in
the quality of coverage afforded by various
insurance policy terms. Many insurance
policies provide reduced protection to the