oil filter CADILLAC CT5 2021 Owner's Manual

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/24/20
114 INSTRUMENTS AND CONTROLS
While in the Info Page Options menu,
the info pages can be restored to the
default factory settings by pressing
and holding
Ron the left steering
wheel controls and the thumbwheel
on the right steering wheel controls at
the same time.
Speed : Shows the vehicle speed in
either kilometers per hour (km/h) or
miles per hour (mph).
Trip 1 or Trip 2 and Average Fuel
Economy : The Trip display shows the
current distance traveled, in either
kilometers (km) or miles (mi), since
the trip odometer was last reset. The
trip odometer can be reset by pressing
Vand selecting yes or no while this
display is active.
Average Fuel Economy shows the
approximate average liters per
100 kilometers (L/100 km) or miles
per gallon (mpg). This number is
calculated based on the number of
L/100 km (mpg) recorded since the
last time this menu item was reset.
This number reflects only the
approximate average fuel economy
that the vehicle has right now, and
will change as driving conditions change. The Average Fuel Economy
can be reset by pressing
Vand
selecting yes or no while this display
is active.
Fuel Range : Shows the approximate
distance the vehicle can be driven
without refueling. LOW will be
displayed when the vehicle is low on
fuel. The fuel range estimate is based
on an average of the vehicle's fuel
economy over recent driving history
and the amount of fuel remaining in
the fuel tank.
Oil Life : Shows an estimate of the
oil's remaining useful 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 Oil0316. In
addition to the engine oil life system
monitoring the oil life, additional
maintenance is recommended. See
Maintenance Schedule 0383. The Oil Life display must be reset
after each oil change. It will not reset
itself. Do not reset the Oil Life display
accidentally at any time other than
when the oil has just been changed.
It cannot be reset accurately until the
next oil change. See
Engine Oil Life
System 0318.
Air Filter Life : If equipped, Shows an
estimate of the engine air filter’s
remaining useful 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 AT NEXT OIL CHANGE
message displays, the engine air filter
should be replaced at the time of the
next oil change. 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 0319.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/24/20
118 INSTRUMENTS AND CONTROLS
Current Drive Cycle :Displays
information in relation to the current
drive cycle including Distance
Traveled, Average Fuel Economy, and
the Total Time. They will reset after
the drive cycle is completed.
Driver Assistance : If equipped,
displays the states of all active safety
systems.
Oil Life : Displays an estimate of the
oil's remaining useful 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 Oil0316. In
addition to the engine oil life system
monitoring the oil life, additional
maintenance is recommended in the
Maintenance Schedule. See the
Maintenance Schedule booklet..
The Oil Life display must be reset
after each oil change. It will not reset
itself. Do not reset the Oil Life display
accidentally at any time other than
when the oil has just been changed. It cannot be reset accurately until the
next oil change. See
Engine Oil Life
System 0318.
Air Filter Life : If equipped, shows an
estimate of the engine air filter’s
remaining useful 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 AT NEXT OIL CHANGE
message displays, the engine air filter
should be replaced at the time of the
next oil change. When the REPLACE
NOW message displays, the engine air
filter should be replaced as soon as
possible.
Engine Hours : Displays the total
number of hours the engine has run.
The display also shows the engine idle
hours.
Lifetime Revs : The display also
shows total engine revolutions divided
by 10,000.
Brake Pad Life : If equipped, This
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 (If Equipped) 0328.
Head-Up Display (HUD)
{Warning
If the HUD image is too bright or
too high in your field of view, it
may take you more time to see
things you need to see when it is
dark outside. Be sure to keep the
HUD image dim and placed low in
your field of view.
If equipped with HUD, some
information concerning the operation
of the vehicle is projected onto the
windshield. The information is
projected through the HUD lens on
the driver side of the instrument
panel and focused out toward the
front of the vehicle.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
308 VEHICLE CARE
Vehicle Care
General Information
General Information . . . . . . . . . . . . . 309
California Proposition65 Warning . . . . . . . . . . . . . . . . . . . . . 309
California Perchlorate Materials Requirements . . . . . . . . . . . . . . . . . . . 309
Accessories and Modifications . . . . . . . . . . . . . . . . . . . 310
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . . . . . . 310
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . . . . . . 313
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . 316
Engine Oil Life System . . . . . . . . . . . 318
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Engine Air Filter Life System . . . . 319
Engine Air Cleaner/Filter . . . . . . . . . 320
Cooling System . . . . . . . . . . . . . . . . . . . 322
Engine Overheating . . . . . . . . . . . . . . 326
Washer Fluid . . . . . . . . . . . . . . . . . . . . . 327
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328
Brake Pad Life System (If Equipped) . . . . . . . . . . . . . . . . . . . . . . . 328
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . 329 Battery - North America . . . . . . . . . 330
All-Wheel Drive . . . . . . . . . . . . . . . . . . 331
Park Brake and P (Park)
Mechanism Check . . . . . . . . . . . . . . 331
Wiper Blade Replacement . . . . . . . 331
Windshield Replacement . . . . . . . . 332
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . 332
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . 333
Bulb Replacement
LED Lighting . . . . . . . . . . . . . . . . . . . . . 334
Electrical System
Electrical System Overload . . . . . . 334
Fuses and Circuit Breakers . . . . . . 334
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Instrument Panel Fuse Block . . . . 337
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
All-Season Tires . . . . . . . . . . . . . . . . . . 342
Winter Tires . . . . . . . . . . . . . . . . . . . . . . 343
Run-Flat Tires . . . . . . . . . . . . . . . . . . . . 343
Self-Sealing Tires . . . . . . . . . . . . . . . . . 344
Low-Profile Tires . . . . . . . . . . . . . . . . . 344
Summer Tires . . . . . . . . . . . . . . . . . . . . 344
Tire Sidewall Labeling . . . . . . . . . . . 345 Tire Designations . . . . . . . . . . . . . . . . . 346
Tire Terminology and
Definitions . . . . . . . . . . . . . . . . . . . . . . 347
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 349
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . . . . . . 350
Tire Pressure Monitor System . . . 351
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . . . . . . 352
Tire Inspection . . . . . . . . . . . . . . . . . . . 355
Tire Rotation . . . . . . . . . . . . . . . . . . . . . 355
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Buying New Tires . . . . . . . . . . . . . . . . 357
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . 358
Uniform Tire Quality Grading . . . 359
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 360
Wheel Replacement . . . . . . . . . . . . . . 360
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . 361
If a Tire Goes Flat . . . . . . . . . . . . . . . . 361
Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . . . 362
Storing the Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . . . 368
Jump Starting
Jump Starting - NorthAmerica . . . . . . . . . . . . . . . . . . . . . . . . . 368

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
314 VEHICLE CARE
1. Windshield Washer Fluid Reservoir.See Washer Fluid 0327.
2. Engine Coolant Surge Tank and Pressure Cap. See Cooling System
0 322.
3. Engine Air Cleaner/Filter 0320.
4. Engine Cooling Fan (Out of View). See Cooling System 0322.
5. Engine Oil Fill Cap. See Engine Oil
0 316.
6. Engine Oil Dipstick. See Engine Oil
0 316.
7. Remote Positive (+) Battery Terminal. See Jump Starting - North
America 0368.
8. Brake Fluid Reservoir. See Brake
Fluid 0329.
9. Remote Negative (-) Battery Terminal. See Jump Starting - North
America 0368.
10. Engine Compartment Fuse Block
0335.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
VEHICLE CARE 315
3.0L V6 Engine
1. Windshield Washer Fluid Reservoir. See Washer Fluid 0327.
2. Engine Coolant Surge Tank and Pressure Cap. See Cooling System
0 322. 3. Engine Oil Dipstick. See
Engine Oil
0 316.
4. Engine Air Cleaner/Filter 0320.
5. Engine Cooling Fan (Out of View). See Cooling System 0322. 6. Engine Oil Fill Cap. See
Engine Oil
0 316.
7. Remote Positive (+) Battery Terminal. See Jump Starting - North
America 0368.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
318 VEHICLE CARE
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 trashor 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 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.
When the system has calculated that
oil life has been diminished, it
indicates that an oil change is
necessary. A CHANGE ENGINE OIL
SOON message comes on. 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. 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.
To reset the system:
1. Using the DIC buttons, display REMAINING OIL LIFE on the DIC.
See Driver Information Center (DIC)
(Base Level) 0113 or
Driver Information Center (DIC)
(Uplevel) 0116.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
VEHICLE CARE 319
2. Press and hold the thumbwheel onthe steering wheel. When the
confirmation message displays,
select YES. The oil life will change
to 100%.
Be careful not to reset the oil life
display accidentally at any time
other than after the oil is changed.
It cannot be reset accurately until
the next oil change.
The oil life system can also be reset as
follows: 1. Using the DIC buttons, display REMAINING OIL LIFE on the DIC.
See Driver Information Center (DIC)
(Base Level) 0113 or
Driver Information Center (DIC)
(Uplevel) 0116.
2. Fully press and release the accelerator pedal three times
within five seconds.
If the CHANGE ENGINE OIL SOON
message is not on, the system is
reset.
The system is reset when the
CHANGE ENGINE OIL SOON message
is off. If the CHANGE ENGINE OIL SOON
message comes back on when the
vehicle is started, 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.
The vehicle is not equipped with a
transmission fluid level dipstick.
There is a special procedure for
checking and changing the
transmission fluid. Because this
procedure is difficult, this should be
done at the 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. See
Recommended Fluids and Lubricants
0
392.
Change the fluid and filter at the
intervals listed in Maintenance
Schedule 0383, and be sure to use the
fluid listed in Recommended Fluids and
Lubricants 0392.
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.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
320 VEHICLE CARE
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) (Base Level) 0113 or
Driver Information Center (DIC)
(Uplevel) 0116. 3. Press
Ton the steering wheel,
or press the trip odometer reset
stem if the vehicle does not have
DIC controls, to move to the Reset/
Disable display area. Select Reset,
then press the thumbwheel or
press the reset stem for several
seconds.
4. Press the thumbwheel or the reset stem to confirm the reset.
Engine Air Cleaner/Filter
The engine air cleaner/filter is in the
engine compartment on the passenger
side of the vehicle for the 2.0L L4
engine, and in the center of the engine
compartment for the 3.0L V6 engine.
See Engine Compartment Overview
0 313.
When to Inspect the Engine Air
Cleaner/Filter
.For intervals on changing and
inspecting the engine air filter, see
break="2" Maintenance Schedule
0 383.
.If equipped with Engine Air Filter
Life System, see Engine Air Filter Life
System 0319.
.If driving in very dusty areas, follow
the engine air filter inspecting and
changing intervals, see Maintenance
Schedule 0383.
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.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
SERVICE AND MAINTENANCE 383
Maintenance Schedule
Owner Checks and Services
Check the engine oil level. SeeEngine
Oil 0316.
Once a Month
.Check the tire inflation pressures.
See Tire Pressure 0349.
.Inspect the tires for wear. See Tire
Inspection 0355.
.Check the windshield washer fluid
level. See Washer Fluid 0327.
Engine Oil Change
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 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. See
Engine Oil Life System
0318.
Air Conditioning Desiccant
(Replace Every Seven Years)
The air conditioning system requires
maintenance every seven years. This
service requires replacement of the
desiccant to help the longevity and
efficient operation of the air
conditioning system. This service can
be complex. See your dealer.
Tire Rotation and Required
Services Every 12 000 km
(7,500 mi)
Rotate the tires, if recommended for
the vehicle, and perform the following
services. See Tire Rotation0355.
.Check engine oil level and oil
life percentage. If needed, change
engine oil and filter, and reset oil
life system. See Engine Oil0316 and
Engine Oil Life System 0318.
.If equipped, check the air filter
life percentage. If necessary, replace
the engine air filter and reset the
engine air filter life system. See
Engine Air Filter Life System 0319.
If the vehicle is not equipped with
the engine air filter life system,
inspect the engine air cleaner filter.
See Engine Air Cleaner/Filter 0320.
.Check engine coolant level. See
Cooling System 0322.
.Check windshield washer fluid level.
See Washer Fluid 0327.
.Check tire inflation pressures. See
Tire Pressure 0349.
.Inspect tire wear. See Tire Inspection
0 355.
.Visually check for fluid leaks.
.Inspect brake system. See Exterior
Care 0372.
.Visually inspect steering,
suspension, and chassis
components for damage, including
cracks or tears in the rubber boots,
loose or missing parts, or signs of
wear at least once a year. See
Exterior Care 0372.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
SERVICE AND MAINTENANCE 385
Maintenance Schedule
Additional Required Services -
Normal12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi
60 000 km/37,500 mi
72 000 km/45,000 mi
84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi
120 000 km/75,000 mi
132 000 km/82,500 mi
144 000 km/90,000 mi
156 000 km/97,500 mi
168 000 km/105,000 mi
180 000 km/112,500 mi
192 000 km/120,000 mi
204 000 km/127,500 mi
216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 mi
Rotate tires, if recommended for the vehicle, and
perform Required Services. (1) Check engine oil level
and oil life percentage. Change engine oil and filter,
if needed.
If equipped, check engine air filter life percentage
and status. Change engine air filter, if needed.
@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Replace passenger compartment air filter. (2)@ @@@@@
If the vehicle is not equipped with the engine air
filter life system, replace engine air cleaner filter. (3)@ @@
Inspect evaporative control system. (4)@@@
Replace spark plugs. Inspect spark plug wires and/or
boots.@ @
Change transfer case fluid, if equipped with
AWD. (5)@
Change rear axle fluid, if equipped with limited slip
differential. (5)@@@
Change rear axle fluid, without limited slip
differential. (5)@
Change front axle fluid, if equipped with AWD. (5)@
Drain and fill engine cooling system. (6)@
Visually inspect accessory drive belts. (7)@
Replace brake fluid. (8)
Replace windshield wiper blades. (9)
@ @ @ @ @ @ @ @ @ @
Replace hood and/or body lift support gas
struts. (10)@ @
Replace air conditioning desiccant. (11)