2020 CHEVROLET SUBURBAN Brakes

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13566622) - 2020 - CRC - 4/15/19
348 Vehicle Care
Different Size Tires and
Wheels
If wheels or tires are installed that
are a different size than the original
equipment wheels and tires, vehicle
performance, including its braking,
ride and handling characteristics,
stability, and resistance to rollover
may be affected. If the vehicle has
electronic systems such as antilock
brakes, rollover airbags, traction
control, electronic stability control,
or All-Wheel Drive, the performance
of these systems can also be
affected.
{Warning
If different sized wheels are used,
there may not be an acceptable
level of performance and safety if
tires not recommended for those
wheels are selected. This
increases the chance of a crash
and serious injury. Only use GM
specific wheel and tire systems(Continued)
Warning (Continued)
developed for the vehicle, and
have them properly installed by a
GM certified technician.
See Buying New Tires 0346 and
Accessories and Modifications
0 285.
Uniform Tire Quality
Grading
The following information relates
to the system developed by the
United States National Highway
Traffic Safety Administration
(NHTSA), which grades tires by
treadwear, traction, and
temperature performance. This
applies only to vehicles sold in
the United States. The grades
are molded on the sidewalls of
most passenger car tires. The
Uniform Tire Quality Grading
(UTQG) system does not apply
to deep tread, winter tires, compact spare tires, 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.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13566622) - 2020 - CRC - 4/15/19
350 Vehicle Care
vehicle is significantly pulling to one
side or the other. Some slight pull to
the left or right, depending on the
crown of the road and/or other road
surface variations such as troughs
or ruts, is normal. If the vehicle is
vibrating when driving on a smooth
road, the tires and wheels may need
to be rebalanced. See your dealer
for proper diagnosis.
Wheel Replacement
Replace any wheel that is bent,
cracked, or badly rusted or
corroded. If wheel nuts keep coming
loose, the wheel, wheel bolts, and
wheel nuts should be replaced.
If the wheel leaks air, replace it.
Some aluminum wheels can be
repaired. See your dealer if any of
these conditions exist.
Your dealer will know the kind of
wheel that is needed.
Each new wheel should have the
same load-carrying capacity,
diameter, width, offset, and be
mounted the same way as the one it
replaces.Replace wheels, wheel bolts, wheel
nuts, or Tire Pressure Monitor
System (TPMS) sensors with new
GM original equipment parts.
{Warning
Using the wrong replacement
wheels, wheel bolts, or wheel
nuts can be dangerous. It could
affect the braking and handling of
the vehicle. Tires can lose air,
and cause loss of control, causing
a crash. Always use the correct
wheel, wheel bolts, and wheel
nuts for replacement.
Caution
The wrong wheel can also cause
problems with bearing life, brake
cooling, speedometer or
odometer calibration, headlamp
aim, bumper height, vehicle
ground clearance, and tire or tire
chain clearance to the body and
chassis.
Used Replacement Wheels
{Warning
Replacing a wheel with a used
one is dangerous. How it has
been used or how far it has been
driven may be unknown. It could
fail suddenly and cause a crash.
When replacing wheels, use a
new GM original equipment
wheel.
Tire Chains
{Warning
If the vehicle has 265/65R18,
P265/65R18, P275/55R20,
or P285/45R22 size tires, do not
use tire chains. There is not
enough clearance. Tire chains
used on a vehicle without the
proper amount of clearance can
cause damage to the brakes,
suspension, or other vehicle
(Continued)

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13566622) - 2020 - CRC - 4/15/19
Service and Maintenance 381
Service and
Maintenance
General Information
General Information . . . . . . . . . . 381
Maintenance Schedule
Maintenance Schedule . . . . . . . 383
Special Application Services
Special ApplicationServices . . . . . . . . . . . . . . . . . . . . 388
Additional Maintenance
and Care
Additional Maintenanceand Care . . . . . . . . . . . . . . . . . . . . 389
Recommended Fluids,
Lubricants, and Parts
Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . 392
Maintenance Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . 393
Maintenance Records
Maintenance Records . . . . . . . . 395
General Information
Your vehicle is an important
investment. This section describes
the required maintenance for the
vehicle. Follow this schedule to help
protect against major repair
expenses resulting from neglect or
inadequate maintenance. It may
also help to maintain the value of
the vehicle if it is sold. It is the
responsibility of the owner to have
all required maintenance performed.
Your dealer has trained technicians
who can perform required
maintenance using genuine
replacement parts. They have
up-to-date tools and equipment for
fast and accurate diagnostics. Many
dealers have extended evening
and Saturday hours, courtesy
transportation, and online
scheduling to assist with service
needs.
Your dealer recognizes the
importance of providing
competitively priced maintenance
and repair services. With trained
technicians, the dealer is the place for routine maintenance such as oil
changes and tire rotations and
additional maintenance items like
tires, brakes, batteries, and wiper
blades.
Caution
Damage caused by improper
maintenance can lead to costly
repairs and may not be covered
by the vehicle warranty.
Maintenance intervals, checks,
inspections, recommended fluids,
and lubricants are important to
keep the vehicle in good working
condition.
Do not have chemical flushes that
are not approved by GM
performed on the vehicle. The
use of flushes, solvents, cleaners,
or lubricants that are not
approved by GM could damage
the vehicle, requiring expensive
repairs that are not covered by
the vehicle warranty.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13566622) - 2020 - CRC - 4/15/19
Service and Maintenance 389
Additional
Maintenance and Care
Your vehicle is an important
investment and caring for it properly
may help to avoid future costly
repairs. To maintain vehicle
performance, additional
maintenance services may be
required.
It is recommended that your dealer
perform these services—their
trained dealer technicians know
your vehicle best. Your dealer can
also perform a thorough
assessment with a multi-point
inspection to recommend when your
vehicle may need attention.
The following list is intended to
explain the services and conditions
to look for that may indicate
services are required.
Battery
The 12-volt battery supplies power
to start the engine and operate any
additional electrical accessories. .
To avoid break-down or failure to
start the vehicle, maintain a
battery with full cranking power.
. Trained dealer technicians have
the diagnostic equipment to test
the battery and ensure that the
connections and cables are
corrosion-free.
Belts
. Belts may need replacing if they
squeak or show signs of
cracking or splitting.
. Trained dealer technicians have
access to tools and equipment
to inspect the belts and
recommend adjustment or
replacement when necessary.
Brakes
Brakes stop the vehicle and are
crucial to safe driving.
. Signs of brake wear may include
chirping, grinding, or squealing
noises, or difficulty stopping. .
Trained dealer technicians have
access to tools and equipment
to inspect the brakes and
recommend quality parts
engineered for the vehicle.
Fluids
Proper fluid levels and approved
fluids protect the vehicle’s systems
and components. See
Recommended Fluids and
Lubricants 0392 for GM approved
fluids.
. Engine oil and windshield
washer fluid levels should be
checked at every fuel fill.
. Instrument cluster lights may
come on to indicate that fluids
may be low and need to be
filled.
Hoses
Hoses transport fluids and should
be regularly inspected to ensure
that there are no cracks or leaks.
With a multi-point inspection, your
dealer can inspect the hoses and
advise if replacement is needed.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13566622) - 2020 - CRC - 4/15/19
Customer Information 409
.Vehicle make, model, and
model year
. Vehicle Identification
Number (VIN)
. Insurance company and policy
number
. General description of the
damage to the other vehicle
Choose a reputable repair facility
that uses quality replacement parts.
See “Collision Parts” earlier in this
section.
If the airbag has inflated, see What
Will You See after an Airbag
Inflates? 079.
Managing the Vehicle Damage
Repair Process
In the event that the vehicle requires
damage repairs, GM recommends
that you take an active role in its
repair. If you have a pre-determined
repair facility of choice, take the
vehicle there, or have it towed there.
Specify to the facility that any
required replacement collision parts
be original equipment parts, either
new Genuine GM parts or recycled original GM parts. Remember,
recycled parts will not be covered by
the GM vehicle warranty.
Insurance pays the bill for the repair,
but you must live with the repair.
Depending on your policy limits,
your insurance company may
initially value the repair using
aftermarket parts. Discuss this with
the repair professional, and insist on
Genuine GM parts. Remember,
if the vehicle is leased, you may be
obligated to have the vehicle
repaired with Genuine GM parts,
even if your insurance coverage
does not pay the full cost.
If another party's insurance
company is paying for the repairs,
you are not obligated to accept a
repair valuation based on that
insurance company's collision policy
repair limits, as you have no
contractual limits with that company.
In such cases, you can have control
of the repair and parts choices as
long as the cost stays within
reasonable limits.
Publication Ordering
Information
Service Manuals
Service manuals have the diagnosis
and repair information on the
engine, transmission, axle,
suspension, brakes, electrical
system, steering system, body, etc.
Customer Literature
Owner
’s manuals are written
specifically for owners and are
intended to provide basic
operational information about the
vehicle. The owner ’s manual
includes the Maintenance Schedule
for all models.
Customer literature publications
available for purchase include
owner ’s manuals, warranty
manuals, infotainment manuals, and
portfolios. Portfolios include an
owner ’s manual, warranty manual,
infotainment manual, if applicable,
and zip lock bag or pouch.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13566622) - 2020 - CRC - 4/24/19
426 Index
Interior . . . . . . . . . . . . . . . . . . . . . . . . 376
Armrest Storage . . . . . . . . . . . . . . . . 111
Assistance Program,
Roadside . . . . . . . . . . . . . . . . . . . . . . 404
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . 248
Assistance Systems for
Parking and Backing . . . . . . . . . . 244
Automatic Door Locks . . . . . . . . . . . . . . . . . . . . . 25
Emergency Braking (AEB) . . . . 250
Headlamp System . . . . . . . . . . . . 170
Level Control . . . . . . . . . . . . . . . . . 232
Transmission . . . . . . . . . . . . . . . . . 216
Transmission Fluid . . . . . . 296, 299
Automatic Transmission
Manual Mode . . . . . . . . . . . . . . . . . 219
Shift Lock Control FunctionCheck . . . . . . . . . . . . . . . . . . . . . . . .311
Auxiliary Roof Mounted Lamp . . . . . . . . . . 172
Axle, Front . . . . . . . . . . . . . . . . . . . . . . 310
Axle, Rear . . . . . . . . . . . . . . . . . . . . . . 311
B
Battery Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . 176 Load Management . . . . . . . . . . . . 175
Power Protection . . . . . . . . . . . . . 176
Battery - North America . . . . 309, 363
Blade Replacement, Wiper . . . . . 312
Blind Spot Mirrors . . . . . . . . . . . . . . . 38
Brake Pedal and Adjustable
Throttle . . . . . . . . . . . . . . . . . . . . . . 204
System Warning Light . . . . . . . . 139
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 307 Antilock . . . . . . . . . . . . . . . . . . . . . . . 227
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 228
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 308
Parking . . . . . . . . . . . . . . . . . . . . . . . 228
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 189 Automatic
Emergency (AEB) . . . . . . . . . . . 250
Break-In, New Vehicle . . . . . . . . . . 204
Bulb Replacement Fog Lamps . . . . . . . . . . . . . . . . . . . 316
Front Turn Signal Lamps . . . . . 316
Halogen Bulbs . . . . . . . . . . . . . . . . 315
Headlamp Aiming . . . . . . . . . . . . . 315
Headlamps . . . . . . . . . . . . . . 315, 316
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . . . 315
License Plate Lamps . . . . . . . . . 318 Taillamps, Turn Signal,
Stoplamps, and Back-up
Lamps . . . . . . . . . . . . . . . . . . . . . . 317
Buying New Tires . . . . . . . . . . . . . . . 346
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 120
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 285
California Proposition
65 Warning . . . . . . . . . .285, 309, 363,
Back Cover
Canadian Vehicle Owners . . . . . . . . 2
Capacities and Specifications . . . . . . . . . . . . . . . . . 397
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 215
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . 27
Winter Driving . . . . . . . . . . . . . . . . 197
Cargo Tie-Downs . . . . . . . . . . . . . . . . . . . . .113
Caution, Danger, and Warning . . . . 2
Center Console Storage . . . . . . . . 112
Center Seat . . . . . . . . . . . . . . . . . . . . . 47
Chains, Tire . . . . . . . . . . . . . . . . . . . . 350

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13566622) - 2020 - CRC - 4/24/19
Index 429
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 308
Four-Wheel DriveTransfer Case . . . . . . . . . . . . . . . 222
Washer . . . . . . . . . . . . . . . . . . . . . . . 306
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 172 Bulb Replacement . . . . . . . . . . . . 316
Folding Mirrors . . . . . . . . . . . . . . . . . . 37
Forward Collision Alert
(FCA) System . . . . . . . . . . . . . . . . . 248
Four-Wheel Drive . . . . . . . . . . 222, 310
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 410
Front Axle . . . . . . . . . . . . . . . . . . . . . . 310
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Front Seats
Adjustment . . . . . . . . . . . . . . . . . . . . . 46
Heated and Ventilated . . . . . . . . . . 53
Front Turn Signal Lamps . . . . . . . 316
Fuel Additives . . . . . . . . . . . . . . . . . . . . . 258
Economy, Driving for Better . . . 187
Filling a Portable Fuel
Container . . . . . . . . . . . . . . . . . . . 261
Filling the Tank . . . . . . . . . . . . . . . 259
Foreign Countries . . . . . . . . . . . . 258
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 132
Low Fuel Warning Light . . . . . . . 143 Management, Active . . . . . . . . . . 214
Prohibited Fuels . . . . . . . . . . . . . . 257
Recommended . . . . . . . . . . . . . . . 257
Top Tier . . . . . . . . . . . . . . . . . . . . . . 256
Full-Size Spare Tire . . . . . . . . . . . . 362
Fuses Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 320
Fuses and Circuit Breakers . . . 319
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . 324, 327
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 329
G
Garage Door Opener . . . . . . . . . . . 163Programming . . . . . . . . . . . . . . . . . 163
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . 314
Gauges Engine CoolantTemperature . . . . . . . . . . . . . . . . 134
Engine Oil Pressure . . . . . . . . . . 133
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Odometer . . . . . . . . . . . . . . . . . . . . . 131
Speedometer . . . . . . . . . . . . . . . . . 131
Tachometer . . . . . . . . . . . . . . . . . . . 131
Trip Odometer . . . . . . . . . . . . . . . . 131
Voltmeter . . . . . . . . . . . . . . . . . . . . . 134 Warning Lights and
Indicators . . . . . . . . . . . . . . . . . . . 126
General Information Service and Maintenance . . . . . 381
Towing . . . . . . . . . . . . . . . . . . . . . . . . 262
Vehicle Care . . . . . . . . . . . . . . . . . . 284
Glass Replacement . . . . . . . . . . . . . 313
Glove Box . . . . . . . . . . . . . . . . . . . . . . 110
GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . 404
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . 315
Hazard Warning Flashers . . . . . . . 171
Head Restraints . . . . . . . . . . . . . . . . . 45
Head-up Display . . . . . . . . . . . . . . . . 150
Headlamps . . . . . . . . . . . . . . . . . . . . . 316Aiming . . . . . . . . . . . . . . . . . . . . . . . . 315
Automatic . . . . . . . . . . . . . . . . . . . . . 170
Bulb Replacement . . . . . . . . . . . . 315
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . 170
Flash-to-Pass . . . . . . . . . . . . . . . . . 170
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . 315
High-Beam On Light . . . . . . . . . . 143
High/Low Beam Changer . . . . . 169
Lamps On Reminder . . . . . . . . . 144