oil filter CHEVROLET SUBURBAN 2023 Owners Manual

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16416971) - 2023 - CRC - 4/25/22
Instruments and Controls 125
When the remaining oil life is low, the
CHANGE ENGINE OIL SOON message will
appear on the display. The oil should be
changed as soon as possible. SeeEngine Oil
0 325. In addition to the engine oil life
system monitoring the oil life, additional
maintenance is recommended. See
Maintenance Schedule 0400.
The Oil Life display must be reset after each
oil change. It will not reset itself. Do not
reset the Oil Life display at any time other
than when the oil has just been changed.
It cannot be reset accurately until the next
oil change. To reset, see Engine Oil Life
System 0326.
Tire Pressure : Shows the approximate
pressures of all four tires. Tire pressure is
displayed in either kilopascal (kPa) or in
pounds per square inch (psi). If the pressure
is low, the value for that tire is shown in
amber. See Tire Pressure Monitor System
0 360 andTire Pressure Monitor Operation
0 361.
Air Filter Life : Shows an estimate of the
remaining engine air filter’s life and the
state of the system. Engine Air Filter Life
95% means 95% of the current air filter life
remains. Messages will display based on the
engine air filter life and the state of the system. When the REPLACE SOON message
displays, the engine air filter should be
replaced at the earliest convenience.
The Air Filter Life display must be reset after
the engine air filter replacement. To reset,
see
Engine Air Filter Life System 0328.
Brake Pad Life : Displays an estimate of the
remaining life of the front and rear brake
pads. Messages will display based on brake
pad wear and the state of the system. Reset
the Brake Pad Life display after replacing the
brake pads. See Brake Pad Life System
0 335.
Fuel Economy : Displays average fuel
economy, the best fuel economy over the
selected distance, and a bar graph showing
instantaneous fuel economy.
Press the thumbwheel to change the
selected distance. Press and hold the
thumbwheel while this display is active to
reset the best fuel economy and average
fuel economy. This display can also be reset
by selecting Reset in the menu.
Engine Hours (Hourmeter) : Shows the total
number of hours the engine has run. This
display also shows the engine idle hours. Transmission Fluid Temperature :
Shows the
temperature of the automatic transmission
fluid in either degrees Celsius (°C) or degrees
Fahrenheit (°F).
Trailer Brake : On vehicles with the
Integrated Trailer Brake Control (ITBC)
system, the trailer brake display appears in
the DIC.
TRAILER GAIN shows the trailer gain setting.
This setting can be adjusted from 0.0 to 10.0
with either a trailer connected or
disconnected.
OUTPUT shows the power output to the
trailer any time a trailer with electric brakes
is connected. Output is displayed as a bar
graph. Dotted lines may appear in the
OUTPUT display if a trailer is not connected.
Off Road : If equipped, displays vehicle pitch
and roll information, road wheel angle, and
four-wheel drive (4WD) status.
Follow Distance : If equipped, the current
follow time to the vehicle ahead is displayed
as a time value on this page.
Driver Assistance : If equipped, shows
information for Lane Keep Assist (LKA) and
Forward Collision Alert (FCA).

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Instruments and Controls 127
Trip 1 or Trip 2, Average Fuel Economy, and
Average Speed :Shows the current distance
traveled, in either kilometers (km) or
miles (mi), since the trip odometer was last
reset.
The Average Fuel Economy display shows
the approximate average liters per
100 kilometers (L/100 km), kilometers per
liter (km/L), or miles per gallon (mpg). This
number is calculated based on the value
recorded since the last time this menu item
was reset. This number reflects only the
approximate average fuel economy that the
vehicle has at that moment, and changes as
driving conditions change.
Average Speed shows the average speed of
the vehicle in kilometers per hour (km/h) or
miles per hour (mph). This average is
calculated based on various vehicle speeds
recorded since the last reset of this value.
Press the thumbwheel while this display is
active to reset the values.
Timer : To start the timer, press the
thumbwheel while this display is active. The
display will show the amount of time that
has passed since the timer was last reset. To
stop the timer, press the thumbwheel
briefly while this display is active and the
timer is running. Press the thumbwheel while this display is
active to reset the timer.
Tire Pressure :
Shows the approximate
pressures of all four tires. Tire pressure is
displayed in either kilopascal (kPa) or in
pounds per square inch (psi). If the pressure
is low, the value for that tire is shown in
amber. See Tire Pressure Monitor System
0 360 andTire Pressure Monitor Operation
0 361.
Fuel Economy : Displays average fuel
economy, the best fuel economy over the
selected distance, and a bar graph showing
instantaneous fuel economy.
Press the thumbwheel to change the
selected distance. This display can be reset
by selecting Reset in the menu.
Driver Assistance : If equipped, shows
information for Adaptive Cruise Control
(ACC), Lane Keep Assist (LKA), Forward
Collision Alert (FCA), and Follow Distance
Indicator(FDI).
Oil Life : Shows an estimate of the
remaining oil life. If REMAINING OIL LIFE
99% is displayed, that means 99% of the
current oil life remains. When the remaining oil life is low, the
CHANGE ENGINE OIL SOON message will
appear on the display. The oil should be
changed as soon as possible. See
Engine Oil
0 325. In addition to the engine oil life
system monitoring the oil life, additional
maintenance is recommended. See
Maintenance Schedule 0400.
The Oil Life display must be reset after each
oil change. It will not reset itself. Do not
reset the Oil Life display at any time other
than when the oil has just been changed.
It cannot be reset accurately until the next
oil change. To reset, see Engine Oil Life
System 0326.
Brake Pad Life : Displays an estimate of the
remaining life of the front and rear brake
pads. Messages will display based on brake
pad wear and the state of the system. Reset
the Brake Pad Life display after replacing the
brake pads. See Brake Pad Life System
0 335.
Air Filter Life : Shows an estimate of the
remaining engine air filter’s life and the
state of the system. Engine Air Filter Life
95% means 95% of the current air filter life
remains. Messages will display based on the
engine air filter life and the state of the

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
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318 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . . . . . . . . . . 319
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . . 319
Accessories and Modifications . . . . . . . . . 319
Vehicle Checks
Doing Your Own Service Work . . . . . . . . . 319
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Engine Compartment Overview . . . . . . . . 322
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Engine Oil Life System . . . . . . . . . . . . . . . . 326
Automatic Transmission Fluid . . . . . . . . . . 327
Engine Air Filter Life System . . . . . . . . . . 328
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . 328
Cooling System . . . . . . . . . . . . . . . . . . . . . . . 329
Engine Overheating . . . . . . . . . . . . . . . . . . . . 332
Engine Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Brake Pad Life System . . . . . . . . . . . . . . . . . 335
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Battery - North America . . . . . . . . . . . . . . . 337
Four-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . 338
Front Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
Park Brake and P (Park) Mechanism Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339 Wiper Blade Replacement . . . . . . . . . . . . . 339
Glass Replacement . . . . . . . . . . . . . . . . . . . . 340
Windshield Replacement . . . . . . . . . . . . . . 340
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . . . . . . . 341
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . 341
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
Taillamps, Turn Signal, Stoplamps, and
Back-Up Lamps . . . . . . . . . . . . . . . . . . . . . . 342
Electrical System
Electrical System Overload . . . . . . . . . . . . 343
Fuses and Circuit Breakers . . . . . . . . . . . . . 344
Engine Compartment Fuse Block . . . . . . 345
Instrument Panel Fuse Block . . . . . . . . . . 349
Rear Compartment Fuse Block . . . . . . . . . 351
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . . 353
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
Low-Profile Tires . . . . . . . . . . . . . . . . . . . . . . . 354
All-Terrain Tires . . . . . . . . . . . . . . . . . . . . . . . . 354
Tire Sidewall Labeling . . . . . . . . . . . . . . . . . 354
Tire Designations . . . . . . . . . . . . . . . . . . . . . . 356
Tire Terminology and Definitions . . . . . . 356
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . 358 Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
Tire Pressure Monitor System . . . . . . . . . 360
Tire Pressure Monitor Operation . . . . . . . 361
Tire Inspection . . . . . . . . . . . . . . . . . . . . . . . . 365
Tire Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . 365
When It Is Time for New Tires . . . . . . . . 366
Buying New Tires . . . . . . . . . . . . . . . . . . . . . 367
Different Size Tires and Wheels . . . . . . . 368
Uniform Tire Quality Grading . . . . . . . . . 368
Wheel Alignment and Tire Balance . . . . 369
Wheel Replacement . . . . . . . . . . . . . . . . . . . 370
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . 370
If a Tire Goes Flat . . . . . . . . . . . . . . . . . . . . . . 371
Tire Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 372
Full-Size Spare Tire . . . . . . . . . . . . . . . . . . . . 382
Jump Starting
Jump Starting - North America . . . . . . . . 383
Towing the Vehicle
Transporting a Disabled Vehicle . . . . . . . 386
Recreational Vehicle Towing . . . . . . . . . . . 387
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . 390
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . 394
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
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Vehicle Care 323
1. Remote Negative (–) Location. SeeJump
Starting - North America 0383.
2. Positive (+) Terminal (Under Cover). See Jump Starting - North America 0383.
3. Battery - North America 0337.
4. Engine Compartment Fuse Block 0345.
5. Engine Oil Dipstick. See “Checking Engine
Oil” under Engine Oil 0325.
6. Engine Cooling Fans (Out of View). See Cooling System 0329.
7. Engine Oil Fill Cap. See “When to Add
Engine Oil” underEngine Oil 0325.
8. Coolant Surge Tank and Pressure Cap. See Cooling System 0329.
9. Engine Air Cleaner/Filter 0328.
10. Brake Fluid Reservoir. See Brake Fluid
0 336.
11. Windshield Washer Fluid Reservoir. See “Adding Washer Fluid” underWasher
Fluid 0334.

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324 Vehicle Care
6.2L V8 Engine
1. Remote Negative (–) Location. See Jump
Starting - North America 0383.
2. Positive (+) Terminal (Under Cover). See Jump Starting - North America 0383.
3. Battery - North America 0337.
4. Engine Compartment Fuse Block 0345. 5. Engine Oil Dipstick. See
“Checking Engine
Oil” under Engine Oil 0325.
6. Engine Cooling Fans (Out of View). See Cooling System 0329.
7. Engine Oil Fill Cap. See “When to Add
Engine Oil” underEngine Oil 0325. 8. Coolant Surge Tank and Pressure Cap.
See Cooling System 0329.
9. Engine Air Cleaner/Filter 0328.
10. Brake Fluid Reservoir. See Brake Fluid
0 336.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
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326 Vehicle Care
Caution (Continued)
much oil that the oil level gets above the
cross-hatched area that shows the proper
operating range), the engine could be
damaged. Drain the excess oil or limit
driving of the vehicle, and seek a service
professional to remove the excess oil.
See Engine Compartment Overview 0322 for
the location of the engine oil fill cap.
Add enough oil to put the level somewhere
in the proper operating range. Push the
dipstick all the way back in when through.
Selecting the Right Engine Oil
Selecting the right engine oil depends on
both the proper oil specification and
viscosity grade. See Recommended Fluids
and Lubricants 0404.
Specification
Use full synthetic engine oils that meet the
dexos1 specification. Engine oils that have
been approved by GM as meeting the
dexos1 specification are marked with the
dexos1 approved logo.
Caution
Failure to use the recommended engine
oil or equivalent can result in engine
damage not covered by the vehicle
warranty.
Viscosity Grade
Use SAE 0W-20 viscosity grade engine oil.
When selecting an oil of the appropriate
viscosity grade, it is recommended to select
an oil of the correct specification. See
“Specification” earlier in this section.
Engine Oil Additives/Engine Oil Flushes
Do not add anything to the oil. The
recommended oils meeting the dexos1
specification are all that is needed for good
performance and engine protection. Engine oil system flushes are not
recommended and could cause engine
damage not covered by the vehicle
warranty.
What to Do with Used Oil
Used engine oil contains certain elements
that can be unhealthy for your skin and
could even cause cancer. Do not let used oil
stay on your skin for very long. Clean your
skin and nails with soap and water, or a
good hand cleaner. Wash or properly
dispose of clothing or rags containing used
engine oil. See the manufacturer's warnings
about the use and disposal of oil products.
Used oil can be a threat to the environment.
If you change your own oil, be sure to drain
all the oil from the filter before disposal.
Never dispose of oil by putting it in the
trash or pouring it on the ground, into
sewers, or into streams or bodies of water.
Recycle it by taking it to a place that
collects used oil.
Engine Oil Life System
When to Change Engine Oil
This vehicle has a computer system that
indicates when to change the engine oil and
filter. This is based on a combination of

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Vehicle Care 327
factors which include engine revolutions,
engine temperature, and miles driven. Based
on driving conditions, the mileage at which
an oil change is indicated can vary
considerably. For the oil life system to work
properly, the system must be reset every
time the oil is changed.
On some vehicles, when the system has
calculated that oil life has been diminished,
a CHANGE ENGINE OIL SOON message comes
on to indicate that an oil change is
necessary. Change the oil as soon as
possible within the next 1 000 km (600 mi).
It is possible that, if driving under the best
conditions, the oil life system might indicate
that an oil change is not necessary for up to
a year. The engine oil and filter must be
changed at least once a year and, at this
time, the system must be reset. For vehicles
without the CHANGE ENGINE OIL SOON
message, an oil change is needed when the
REMAINING OIL LIFE percentage is near 0%.
Your dealer has trained service people who
will perform this work and reset the system.
It is also important to check the oil regularly
over the course of an oil drain interval and
keep it at the proper level.If the system is ever reset accidentally, the
oil must be changed at 5 000 km (3,000 mi)
since the last oil change. Remember to reset
the oil life system whenever the oil is
changed.
How to Reset the Engine Oil Life System
Reset the system whenever the engine oil is
changed so that the system can calculate
the next engine oil change. Always reset the
engine oil life to 100% after every oil
change. It will not reset itself. To reset the
engine oil life system:
1. Display the oil life percentage on the DIC. See Driver Information Center (DIC)
(Uplevel) 0126 orDriver Information
Center (DIC) (Base Level) 0123.
2. Press the thumbwheel on the steering wheel, or the trip odometer reset stem if
the vehicle does not have DIC controls,
for several seconds. When the
confirmation message displays, select
YES. The oil life will change to 100%. The oil life system can also be reset as
follows:
1. Display the oil life percentage on the DIC. See Driver Information Center (DIC)
(Uplevel) 0126 orDriver Information
Center (DIC) (Base Level) 0123.
2. Fully press the accelerator pedal slowly three times within five seconds.
3. If the display changes to 100%, the system is reset.
If the vehicle has a CHANGE ENGINE OIL
SOON message and it comes back on when
the vehicle is started and/or the oil
life percentage is near 0%, the engine oil
life system has not been reset. Repeat the
procedure.
Automatic Transmission Fluid
How to Check Automatic Transmission
Fluid
It is not necessary to check the transmission
fluid level. A transmission fluid leak is the
only reason for fluid loss. If a leak occurs,
take the vehicle to your dealer and have it
repaired as soon as possible.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
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328 Vehicle Care
There is a special procedure for checking and
changing the transmission fluid. Because this
procedure is difficult, this should be done at
your dealer. Contact your dealer for
additional information.
Caution
Use of the incorrect automatic
transmission fluid may damage the
vehicle, and the damage may not be
covered by the vehicle warranty. Always
use the correct automatic transmission
fluid. SeeRecommended Fluids and
Lubricants 0404.
Change the fluid and filter at the intervals
listed in Maintenance Schedule 0400, and
be sure to use the fluid listed in
Recommended Fluids and Lubricants 0404.
Engine Air Filter Life System
If equipped, this feature provides the engine
air filter’s remaining life and best timing for
a change. The timing to change an engine
air filter depends on driving and
environmental conditions. For Tahoe RST, vehicles equipped with the
Chevrolet Performance Air Intake System do
not utilize the air filter cleanliness monitor
system. See the
Maintenance Schedule
0 400.
When to Change the Engine Air Filter
When the Driver Information Center (DIC)
displays a message to replace the engine air
filter at the next oil change, follow this
timing.
When the DIC displays a message to replace
the engine air filter soon, replace the engine
air filter at the earliest convenience.
The system must be reset after the engine
air filter is changed.
If the DIC displays a message to check the
engine air filter system, see your dealer.
How to Reset the Engine Air Filter Life
System
To reset:
1. Place the vehicle in P (Park).
2. Display the Air Filter Life on the DIC. See Driver Information Center (DIC) (Uplevel)
0126 orDriver Information Center (DIC)
(Base Level) 0123. 3. Press the thumbwheel on the steering
wheel to move to the Reset/Disable
display area. Select Reset then press the
thumbwheel for several seconds.
4. Press the thumbwheel to confirm the reset.
Engine Air Cleaner/Filter
The engine air cleaner/filter is on the driver
side of the engine compartment. See Engine
Compartment Overview 0322.
When to Inspect the Engine Air Cleaner/
Filter
If the vehicle is not equipped with the
engine air filter life system see Maintenance
Schedule 0400 for intervals on inspecting
and replacing the engine air cleaner filter.
How to Inspect/Replace the Engine Air
Cleaner/Filter
Do not start the engine or have the engine
running with the engine air cleaner/filter
housing open. Before removing the engine
air cleaner/filter, make sure that the engine
air cleaner/filter housing and nearby
components are free of dirt and debris. Do
not clean the engine air cleaner/filter or
components with water or compressed air.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
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400 Service and Maintenance
Because of the way people use vehicles,
maintenance needs vary. There may need to
be more frequent checks and services. The
Additional Required Services - Normal are for
vehicles that:
.Carry passengers and cargo within
recommended limits on the Tire and
Loading Information label. SeeVehicle
Load Limits 0205.
.Are driven on reasonable road surfaces
within legal driving limits.
.Use the recommended fuel. See
Recommended Fuel (5.3L Engine) 0285 or
Recommended Fuel (6.2L Engine) 0285.
Refer to the information in the Maintenance
Schedule Additional Required Services -
Normal Service.
The Additional Required Services - Severe are
for vehicles that are:
.Mainly driven in heavy city traffic in hot
weather.
.Mainly driven in hilly or mountainous
terrain.
.Frequently towing a trailer.
.Used for high speed or competitive
driving.
.Used for taxi, police, or delivery service. Refer to the information in the Maintenance
Schedule Additional Required Services -
Severe Service.
{Warning
Performing maintenance work can be
dangerous and can cause serious injury.
Perform maintenance work only if the
required information, proper tools, and
equipment are available. If they are not,
see your dealer to have a trained
technician do the work. See
Doing Your
Own Service Work 0319.
Maintenance Schedule
Tire Rotation and Required Services
Every 12 000 km (7,500 mi)
Tires are rotated to achieve a more uniform
wear for all tires. The first rotation is the
most important.
Anytime unusual wear is noticed, rotate the
tires as soon as possible, check for proper
tire inflation pressure, and check for
damaged tires or wheels. If the unusual
wear continues after the rotation, check the wheel alignment. See
When It Is Time for
New Tires 0366 and
Wheel Replacement 0370.
.Perform Multi-Point Vehicle Inspection.
See Multi-Point Vehicle Inspection (MPVI)
0 402.
.Lubricate body components. See Exterior
Care 0390.
Extended Idle Use
When the vehicle is used in a way that
requires extended idle time, one hour of use
shall be deemed the same as 53 km (33 mi).
See Driver Information Center (DIC) (Uplevel)
0 126 orDriver Information Center (DIC)
(Base Level) 0123 for hourmeter.
Additional Required Services —Normal
Service
Every 12 000 km (7,500 mi)
.Check engine oil level and oil
life percentage. If needed, change engine
oil and filter, and reset oil life system. Or
when the CHANGE ENGINE OIL SOON
message displays, have the engine oil and
filter changed within the next 1 000 km/
600 mi. If driven under the best
conditions, the engine oil life system may
not indicate the need for vehicle service

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
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Service and Maintenance 401
for up to a year. The engine oil and filter
must be changed at least once a year and
the oil life system must be reset. Your
trained dealer technician can perform this
work. If the engine oil life system is reset
accidentally, service the vehicle within
5 000 km/3,000 mi since the last service.
Reset the oil life system when the oil is
changed. SeeEngine Oil Life System
0 326.
.When the REPLACE AT NEXT OIL CHANGE
message displays, the engine air filter
should be replaced at the next engine oil
change. When the REPLACE ENGINE AIR
FILTER SOON message displays, the
engine air filter should be replaced at the
earliest convenience. Reset the engine air
filter life system after the engine air filter
is replaced. See Engine Air Filter Life
System 0328.
Every 36 000 km (22,500 mi)
.Replace passenger compartment air filter.
Or every 24 months, whichever comes
first. More frequent passenger
compartment air filter replacement may
be needed if driving in areas with heavy
traffic, poor air quality, high dust levels, or environmental allergens. Passenger
compartment air filter replacement may
also be needed if there is reduced airflow,
window fogging, or odors. Your GM
dealer can help determine when to
replace the filter.
Every 161 000 km (100,000 mi)
.Replace hood and/or body lift support gas
struts. Or every 10 years, whichever
comes first. See Gas Strut(s)0340.
Every 156 000 km (97,500 mi)
.Replace spark plugs. Inspect spark plug
wires and/or boots.
.Change transfer case fluid, if equipped
with 4WD. Do not directly power wash
the transfer case and/or front/rear axle
output seals. High pressure water can
overcome the seals and contaminate the
transfer case fluid. Contaminated fluid will
decrease the life of the transfer case and/
or axles and should be replaced.
Every 240 000 km (150,000 mi)
.Drain and fill engine cooling system. Or
every six years, whichever comes first.
See Cooling System 0329.
Severe Conditions Requiring More
Frequent Maintenance*
.Public service, military, or commercial use
vehicles to include the following:
‐ Ambulances, police cars, and
emergency rescue vehicles.
‐ Civilian vehicles such as light duty
pick-up trucks, SUVs, and passenger
cars that are used in military
applications.
‐ Recovery vehicles such as tow trucks
and flatbed single vehicle carriers or
any vehicle that is consistently used in
towing trailers or other loads.
‐ High use commercial vehicles such as
courier delivery vehicles, private
security patrol vehicles, or any vehicles
that operate on a 24–hour basis.
‐ Any vehicle consistently operated in a
high sand or dust environment such as
those used on oil pipelines and similar
applications.