air filter CADILLAC CT5 2023 User Guide

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
388 Vehicle Care
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(Continued)
Caution (Continued)
the damage may not be
covered by the vehicle
warranty. Always use the
correct automatic
transmission fluid. See
Recommended Fluids and
Lubricants0476.
Change the fluid and filter at
the intervals listed in
Maintenance Schedule 0471,
and be sure to use the fluid
listed in Recommended Fluids
and Lubricants 0476.
Manual Transmission
Fluid
It is not necessary to check
the manual 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. See Recommended
Fluids and Lubricants 0476
for the proper fluid to use.
Hydraulic Clutch
For vehicles with a manual
transmission, it is not
necessary to regularly check
brake/clutch fluid unless there
is a leak suspected. Adding
fluid will not correct a leak.
A fluid loss in this system
could indicate a problem. Have
the system inspected and
repaired.
When to Check and What
to Use
The brake/hydraulic clutch
fluid reservoir cap has this
symbol on it. See Engine
Compartment Overview 0378
for reservoir location. The
common hydraulic clutch and
brake master cylinder fluid
reservoir is filled with brake

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
Vehicle Care 389
fluid as indicated on the
reservoir cap. See Brake Fluid
0404 for brake fluid to use.
How to Check and Add
Fluid
Visually check the brake/
clutch fluid reservoir to make
sure the fluid level is at the
MIN (minimum) line on the side
of the reservoir. The brake/
hydraulic clutch fluid system
should be closed and sealed.
Do not remove the cap to
check the fluid level or to
top-off the fluid level. Remove
the cap only when necessary
to add the proper fluid until
the level reaches the MIN line.
Engine Air Filter Life
System
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.
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) 0136 or
Driver Information Center
(DIC) (Uplevel) 0139.
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 and
6.2L V8 engines, and in the
center of the engine

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
390 Vehicle Care
compartment for the 3.0L
V6 engine. See Engine
Compartment Overview0378.
When to Inspect the
Engine Air Cleaner/Filter
.For intervals on changing
and inspecting the engine air
filter, see Maintenance
Schedule 0471.
.If equipped with Engine Air
Filter Life System, see
Engine Air Filter Life System
0389.
.If driving in very dusty areas,
follow the engine air filter
inspecting and changing
intervals, see Maintenance
Schedule 0471.
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.
{Warning
Operating the engine with
the air cleaner/filter off can
cause you or others to be
burned. Use caution when
working on the engine. Do
not start the engine or drive
the vehicle with the air
cleaner/filter off, as flames
may be present if the engine
backfires.
Caution
If the air cleaner/filter is off,
dirt can easily get into the
engine, which could damage
it. Always have the air
cleaner/filter in place when
driving.
To inspect or replace the air
cleaner/filter:
2.0L L4 Engine
1. Remove the five screws on top of the air cleaner/filter
cover.
2. Lift the air/cleaner/filter cover away from the air
cleaner/filter housing.
3. Pull out the air cleaner/ filter.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
Vehicle Care 391
{Warning
If part replacement is
necessary, the part must be
replaced with one of the
same part number or with an
equivalent part. Use of a
replacement part without
the same fit, form, and
function may result in
personal injury or damage to
the vehicle.
5. Inspect or replace the air cleaner/filter.
6. Reverse Steps 1–3 to reinstall the air cleaner/
filter cover.
7. If equipped, reset the engine air filter life system
after replacing the engine
air filter. See Engine Air
Filter Life System 0389.
3.0L V6 Engine
1. Air Duct Clamps
2. Electrical Connectors
3. Screws
1. Disconnect the harness
connectors from the air
cleaner/filter cover
electrical connectors (2).
2. Loosen the screws on the air duct clamps (1) holding
the air outlet ducts in
place. Do not remove
clamps. Move the ducts
aside. 3. Remove the 13 screws (3)
on top of the engine air
cleaner/filter cover to gain
access to both air cleaner/
filters.
4. Lift the engine air cleaner/ filter cover.
{Warning
If part replacement is
necessary, the part must be
replaced with one of the
same part number or with an
equivalent part. Use of a
replacement part without
the same fit, form, and
function may result in
personal injury or damage to
the vehicle.
6. Lift and remove one or both engine air cleaner/
filters.
7. Inspect or replace one or both engine air cleaner/
filters.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
392 Vehicle Care
8. Reverse Steps 1–4 toreinstall the engine air
cleaner/filter cover.
9. If equipped, reset the engine air filter life system
after replacing the engine
air filter. See Engine Air
Filter Life System 0389.
6.2L V8 Engine
1. Remove the six screws on top of the air cleaner/filter
cover.
2. Lift the air/cleaner/filter cover away from the air
cleaner/filter housing.
{Warning
If part replacement is
necessary, the part must be
replaced with one of the
same part number or with an
equivalent part. Use of a
replacement part without
the same fit, form, and
function may result in
personal injury or damage to
the vehicle.
4. Pull out the air cleaner/ filter.
5. Inspect or replace the air cleaner/filter.
6. Reverse Steps 1–3 to reinstall the air cleaner/
filter cover.
7. If equipped, reset the engine air filter life system
after replacing the engine
air filter. See Engine Air
Filter Life System 0389.
Cooling System
The cooling system allows the
engine to maintain the correct
working temperature.
2.0L L4 Engine
1. Engine Coolant Surge
Tank and Pressure Cap
2. Engine Cooling Fan (Out of View)

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
Service and Maintenance 471
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
Tires0437 and
Wheel Replacement 0441.
.Perform Multi-Point Vehicle
Inspection. See Multi-Point
Vehicle Inspection (MPVI)
0474.
.Lubricate body components.
See Exterior Care 0457.
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 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
0386.
.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 0389.
Every 36 000 km (22,500 mi)
.Passenger compartment air
filter replacement (or every
24 months, whichever
occurs first). More frequent
replacement may be needed
if the vehicle is driven in
areas with heavy traffic,
poor air quality, areas with
high dust levels or are
sensitive to environmental
allergens. Filter replacement

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
472 Service and Maintenance
may also be needed if you
notice reduced airflow,
windows fogging up,
or odors. Your local GM
Service location can help you
determine when it is the
right time to replace your
filter.
Every 72 000 km (45,000 mi)
.Change rear axle fluid,
if equipped with limited slip
differential. 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 96 000 km (60,000 mi)
.Replace spark plugs. Inspect
spark plug wires and/or
boots. Every 156 000 km
(97,500 mi)
.Change transfer case fluid,
if equipped with AWD. 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 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)
0 408. Every 240 000 km
(150,000 mi)
.Change rear axle fluid,
without limited slip
differential. 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.
.Change front axle fluid,
if equipped with AWD. 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.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
Service and Maintenance 475
Diagnostics
.OnStar active, if equipped
.Service history/recall check
Engine Oil and Filter
.Engine oil
.Oil life monitor
‐Reset oil life monitor
Exterior Lights
.Visual inspection
Windshield and Wipers
.Visual inspection
Battery
.Battery visual inspection
.Battery test results
.Battery cables and
connections
Systems, Fluids, and
Visible Leak Inspection
.Engine oil
.Transmission
.Drive axle
.Transfer case
.Engine cooling system
.Power steering, if equipped
.Fuel system
.Windshield washer fluid
Tire Inspection
.Tire pressure, tread depth,
and wear
.Rotation, if applicable
.Alignment check, optional
.Reset tire pressure monitor
.Check tire sealant expiration
date, if equipped
.Check spare tire, if equipped
Brakes
.Check brake system
Visible and Functional
Inspections
.Seat belt components
.Exhaust system
.Accelerator pedal
.Passenger compartment air
filter, if equipped
.Engine air filter
.Hoses
.Belts
.Shocks and struts
.Steering components
.Axle boots or driveshaft and
u-joints
.Compartment lift struts,
if equipped
.Floor mats secured, no
interference with pedals
.Horn
.Ignition lock, if equipped
.Starter switch
.Evaporative control system
Lubricate
.Chassis components
Special Application
Services
.Severe Commercial Use
Vehicles Only: Lubricate
chassis components every
oil change.
.Have underbody flushing
service performed. See
"Underbody Maintenance" in
Exterior Care 0457.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
Service and Maintenance 477
Maintenance Replacement Parts
Replacement parts identified below by name, part number, or specification can be obtained from
your dealer.Part GM Part NumberACDelco
Part Number
Engine Air Cleaner/Filter
I2.0L L4 Engine 84498926 A3245C
I3.0L V6 Engine (Driver Side) 84335354 A3235C
I3.0L V6 Engine (Passenger Side) 84335354 A3235C
I6.2L V8 Engine 84578064 A3247C
Engine Oil Filter I2.0L L4 Engine 55495105 PF66
I3.0L V6 Engine 12707246 PF63
I6.2L V8 Engine 12706595 PF64
Passenger Compartment Air Filter IParticulate 84987523 CF185
IFine Dust Particulate 23195727 CF206

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
482 Technical Data
Vehicle Data
Capacities and Specifications
The following approximate capacities are given in metric and English conversions. See
Recommended Fluids and Lubricants0476 for more information.
Application Capacities
Metric English
Air Conditioning Refrigerant For the air conditioning system refrigerant type and
charge amount, see the refrigerant label under the hood. See your dealer for more information.
Brake Fluid 0.4 L0.4 qt
Engine Cooling System*
I2.0L L4 Engine 10.4 L
11.0 qt
I3.0L V6 Engine with Rear Wheel Drive 12.1 L
12.8 qt
I3.0L V6 Engine with All-Wheel Drive 12.3 L
13.0 qt
I3.0L V6 Engine Intercoolers (RWD) 3.1 L
3.3 qt
I3.0L V6 Engine Intercoolers (AWD) 3.0 L
3.2 qt
I6.2L V8 Engine 13.1 L
13.8 qt
Engine Oil with Filter I2.0L L4 Engine 5.0 L
5.3 qt
I3.0L V6 Engine (RWD) 5.7 L
6.0 qt
I3.0L V6 Engine (AWD) 6.2 L
6.5 qt
I6.2L V8 Engine 8.5 L
9.0 qt