oil change CADILLAC CT4 2022 Owners Manual

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
INTRODUCTION 3
H:Flammable
[:Forward Collision Alert
R:Fuse Block Cover Lock Location
+:Fuses
j:ISOFIX/LATCH System Child
Restraints
Q: Keep Fuse Block Covers Properly
Installed
|: Lane Change Alert
@:Lane Departure Warning
A:Lane Keep Assist
*: Malfunction Indicator Lamp
::Oil Pressure
X:Park Assist
~:Pedestrian Ahead Indicator
O:Power
7:Rear Cross Traffic Alert
I:Registered Technician
/:Remote Vehicle Start
h:Risk of Electrical Fire
>:Seat Belt Reminders
I:Side Blind Zone Alert
h:Stop/Start
7:Tire Pressure Monitor
d:Traction Control/StabiliTrak/
Electronic Stability Control (ESC)
a: Under Pressure
k: Vehicle Ahead Indicator

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
108 INSTRUMENTS AND CONTROLS
This light should come on briefly as
the engine is started. If it does not
come on, have the vehicle serviced by
your dealer.
If the light comes on and stays on, it
means that oil is not flowing through
the engine properly. The vehicle could
be low on oil and might have some
other system problem. See your dealer.
Low Fuel Warning Light
A Low Fuel Warning Light near the
fuel gauge comes on briefly when the
ignition is turned on as a check to
show it is working.
It also comes on when the fuel gauge
indicator nears empty. The light turns
off when fuel is added. If it does not,
have the vehicle serviced.
Security Light
The security light should come on
briefly as the engine is started. If it
does not come on, have the vehicle
serviced by your dealer. If the system
is working normally, the indicator
light turns off.
If the light stays on and the engine
does not start, there could be a
problem with the theft-deterrent
system. SeeImmobilizer Operation
0 22.
High-Beam On Light
This light comes on when the
high-beam headlamps are in use. See
Headlamp High/Low-Beam Changer
0130.
IntelliBeam Light
This light comes on when the
IntelliBeam system, if equipped, is
enabled. See Exterior Lamp Controls
0 128.
Lamps On Reminder
This light comes on when the exterior
lamps are in use, except when only
the Daytime Running Lamps (DRL)
are active. See Exterior Lamp Controls
0 128.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
INSTRUMENTS AND CONTROLS 111
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 Oil0331. In
addition to the engine oil life system
monitoring the oil life, additional
maintenance is recommended. See
Maintenance Schedule 0408.
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 0333.
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 0335.
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) 0346.
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 0372 and
Tire Pressure Monitor Operation 0373.
Fuel Economy : Displays average fuel
economy, the best fuel economy over
the selected distance, and a bar graph
showing instantaneous fuel economy.
Average Speed : Displays the average
vehicle speed of the vehicle in
kilometers per hour (km/h) or miles
per hour (mph). This average is based
on the various vehicle speeds recorded
since the last reset. Reset the average
speed by pressing the thumbwheel
while this display is active to show a
confirmation window to select yes
or no.
Timer : This display can be used as a
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.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
INSTRUMENTS AND CONTROLS 113
DIC Info Tiles Selection
The following is the list of all possible
DIC Info Tiles. Depending on the
vehicle, some may not be available.
Left Zone
Battery Voltage :Displays the current
battery voltage. The battery voltage
can fluctuate while viewing this
information on the DIC. This is
normal.
Coolant Temperature : Displays the
coolant temperature in either degrees
Celsius (°C) or degrees Fahrenheit (°F).
eLSD : Displays the amount of rear
differential coupling when the
Electronic Limited-Slip Differential
(eLSD) is active and functioning
during vehicle operation. A reading of
1% is an open differential and 100% is
locked. It is normal for the value to
make small or large changes due to
driving conditions and driver inputs.
For the V-Series Blackwing models,
the eLSD maintains some coupling
even if the vehicle is stationary or not
accelerating. Coupling values of 3%
and up are typical. See Limited-Slip
Differential 0266. Engine Boost :
If equipped, displays
engine manifold pressure relative to
ambient air pressure. It will display
boost pressure generated by the
turbocharging system.
Instantaneous Fuel Economy/
Economy Trend : Displays the current
fuel economy in liters per
100 kilometers (L/100 km) or miles per
gallon (mpg). This number reflects
only the approximate fuel economy
and changes frequently as driving
conditions change. This display
cannot be reset.
When in tour mode, shows history of
the Average Fuel Economy from the
last 100 km (62 mi). Each bar
represents about 5 km (3 mi) of
driving. When driving, the bars shift
to reflect the most recent distance on
the right side.
Lateral G-Force : If equipped,
displays inertial forces being exerted
on the vehicle in the lateral
(side-to-side) direction as numerical
value and as graphical depiction.
Oil Pressure : Shows the current oil
pressure in either kilopascal (kPa) or
in pounds per square inch (psi). Oil Temperature :
Shows the current
oil temperature in either degrees
Celsius (°C) or degrees Fahrenheit (°F).
Time & Temperature : Displays the
current time and the current outside
air temperature.
Tire Status : Shows individual tire
pressures and overall temperature as
either Cold, Cool, Normal, Warm,
or Hot. Normal is typical for normal
driving while Warm is typical for
aggressive driving. Unknown displays
when tire temperature information is
unavailable.
Transmission Fluid Temperature :
If equipped, shows the temperature of
the transmission fluid in either
degrees Celsius (°C) or degrees
Fahrenheit (°F).
Right Zone
Trip 1 or 2/Average Speed/Average
Fuel Economy : Trip displays 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
and holding the thumbwheel while
this display is active.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
114 INSTRUMENTS AND CONTROLS
Average Speed displays the average
speed of the vehicle in kilometers per
hour (km/h) or miles per hour (mph).
This average is calculated based on
the various vehicle speeds recorded
since the last reset of this value. The
average speed can be reset by pressing
and holding the thumbwheel while
this display is active.
Average Fuel Economy displays 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 current,
approximate average fuel economy
and changes as driving conditions
change. The Average Fuel Economy
can be reset by pressing and holding
the thumbwheel while this display is
active.
Fuel Economy :Displays the average
fuel economy, the best fuel economy
over the selected distance, and a bar
graph showing instantaneous fuel economy. Pressing the thumbwheel
opens a menu to change the selected
distance or reset the current values.
Trip Timer/Fuel Used :
This display
can be used as a timer. To start/stop
the timer, press the thumbwheel while
this display is active and then select
the start/stop the timer. The display
shows the amount of time that has
passed since the timer was last reset.
To reset the timer to zero, press the
thumbwheel to access the menu while
this display is active.
Fuel Used displays the approximate
liters (L) or gallons (gal) of fuel that
have been used since last reset. The
fuel used can be reset by pressing the
thumbwheel and selecting Reset Fuel
Used in the menu.
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 status of all active safety
systems. Oil Life :
Displays an estimate of the
remaining useful 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
appears on the display. The oil should
be changed as soon as possible. See
Engine Oil 0331. In addition to the
engine oil life system monitoring the
oil life, additional maintenance is
recommended. See Maintenance
Schedule 0408.
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 0333.
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 are displayed based
on the engine air filter life and the

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
INSTRUMENTS AND CONTROLS 115
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 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 are displayed 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)
0 346.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.
Caution
If you try to use the HUD image as
a parking aid, you may misjudge
the distance and damage your
vehicle. Do not use the HUD image
as a parking aid. The HUD information can be
displayed in various languages. The
speedometer reading and other
numerical values can be displayed in
either English or metric units.
The language selection is changed
through the radio and the units of
measurement is changed through the
instrument cluster. See
Settings0182
and “Options” underInstrument Cluster
(Base Level) 089 or
Instrument Cluster (Uplevel) 091.
HUD Display on the Windshield

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
DRIVING AND OPERATING 215
Caution (Continued)
drive as long or as fast the first
time the vehicle is driven on the
track or raced.
.The axle lubricant should be
replaced with new lubricant.
.On vehicles without a differential
cooler, additional cooling capacity is
required for continuous competitive
driving. The V-Series Blackwing has
a differential cooler, so no
additional cooling capacity is
necessary.
Engine OilCaution
If the vehicle is used for track
events and competitive driving, the
engine may use more oil than it
would with normal use. Low oil
levels can damage the engine.
Check the oil level often and
maintain the proper level. See
Engine Oil 0331. Check the oil level often during track
events and competitive driving, and
keep the oil level at or near the upper
mark. See
“Checking the Engine Oil" in
Engine Oil 0331.
Fuel
Use premium unleaded gasoline with
a posted octane rating of 93 at a track
event. Unleaded gasoline with a
posted octane rating of 91 may be
used, but performance will be
degraded. See Prohibited Fuels 0312.
Automatic or Manual
Transmission Fluid
Have the transmission fluid set to the
track specific oil level prior to track
usage. Transmission fluid should be
changed after every 15 hours of track
usage. Any transmission level set or
change should be performed at the
dealer.
Brakes
Battery Disconnect
Disconnect the battery before
servicing the hydraulic brake system.
It is critical to disconnect the battery before bleeding the system, replacing
the pads, or any other work. The
battery must be disconnected to
prevent the brake master cylinder
from pressurizing the hydraulic
system during its automated self
diagnostic tests that may occur when
a door is opened or the remote key is
present.
{Warning
To avoid personal injury and/or
vehicle damage, always disconnect
the battery before performing
service work on the hydraulic brake
system. Bleeding the brake system
with the battery connected can lead
to excessive pressurization of the
system during automatic diagnostic
tests or diagnosis of a leak or air in
the braking system. A Diagnostic
Trouble Code (DTC) may set and
vehicle speed may be limited.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
312 DRIVING AND OPERATING
Do not use any fuel labeled E85 or
FlexFuel. Do not use gasoline with
ethanol levels greater than 15% by
volume.
Prohibited Fuels
Caution
Do not use fuels with any of the
following conditions; doing so may
damage the vehicle and void its
warranty:
.For vehicles that are not
FlexFuel, fuel labeled greater
than 15% ethanol by volume,
such as mid-level ethanol blends
(16–50% ethanol), E85,
or FlexFuel.
.Fuel with any amount of
methanol, methylal, ferrocene,
and aniline. These fuels can
corrode metal fuel system parts
or damage plastic and rubber
parts.(Continued)
Caution (Continued)
.Fuel containing metals such as
methylcyclopentadienyl
manganese tricarbonyl (MMT),
which can damage the emissions
control system and spark plugs.
.Fuel with a posted octane rating
of less than the recommended
fuel. Using this fuel will lower
fuel economy and performance,
and may decrease the life of the
emissions catalyst.
Fuels in Foreign Countries
The U.S., Canada, and Mexico post
fuel octane ratings in anti-knock index
(AKI). For fuel not to use in a foreign
country, seeProhibited Fuels 0312.
Fuel Additives
TOP TIER Detergent Gasoline is highly
recommended for use with your
vehicle. If your country does not have
TOP TIER Detergent Gasoline, add
ACDelco Fuel System Treatment
Plus−Gasoline to the vehicle’s gasoline
fuel tank at every oil change or
15 000 km (9,000 mi), whichever occurs first. TOP TIER Detergent
Gasoline and ACDelco Fuel System
Treatment Plus−Gasoline will help
keep your vehicle’s engine fuel deposit
free and performing optimally.
Filling the Tank
An arrow on the fuel gauge indicates
which side of the vehicle the fuel door
is on. See
Fuel Gauge 096.
{Warning
Fuel vapors and fuel fires burn
violently and can cause injury or
death.
Follow these guidelines to help
avoid injuries to you and others:
.Read and follow all the
instructions on the fuel pump
island.
.Turn off the engine when
refueling.
.Keep sparks, flames, and
smoking materials away
from fuel.
(Continued)

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
DRIVING AND OPERATING 315
warranty. SeeRecommended Fuel (LSY
2.0L L4 Turbo Engine) 0311 or
Recommended Fuel (L3B 2.7L L4 Turbo
and LF4 3.6L V6 Twin Turbo Engines)
0 311.
Driving Characteristics and
Towing Tips
{Warning
You can lose control when towing a
trailer if the correct equipment is
not used or the vehicle is not driven
properly. For example, if the trailer
is too heavy or the trailer brakes are
inadequate for the load, the vehicle
may not stop as expected. You and
others could be seriously injured.
The vehicle may also be damaged,
and the repairs would not be
covered by the vehicle warranty.
Pull a trailer only if all the steps in
this section have been followed. Ask
your dealer for advice and
information about towing a trailer
with the vehicle.
Driving with a Trailer
Trailering is different than just driving
the vehicle by itself. Trailering means
changes in handling, acceleration,
braking, durability, and fuel economy.
Successful, safe trailering takes correct
equipment, and it has to be used
properly.
The following information has many
time-tested, important trailering tips
and safety rules. Many of these are
important for your safety and that of
your passengers. Read this section
carefully before pulling a trailer.
When towing a trailer:
.Become familiar with and follow all
state and local laws that apply to
trailer towing. These requirements
vary from state to state.
.State laws may require the use of
extended side view mirrors. Even if
not required, you should install
extended side view mirrors if your
visibility is limited or restricted
while towing.
.Do not tow a trailer during the first
800 km (500 mi) of vehicle use to
prevent damage to the engine, axle,
or other parts.
.It is recommended to perform the
first oil change before heavy towing.
.During the first 800 km (500 mi) of
trailer towing, do not drive over
80 km/h (50 mph) and do not make
starts at full throttle.
.Vehicles can tow in D (Drive). If the
transmission downshifts too often, a
lower gear may be selected using
Manual Mode. See Manual Mode
(Electronic Shifter) 0249 or
Manual Mode (Mechanical Shifter)
0 248.
If equipped, the following driver
assistance features should be turned
off when towing a trailer:
.Adaptive Cruise Control (ACC)
.Super Cruise Control
.Lane Keep Assist (LKA)
.Park Assist
.Automatic Parking Assist (APA)
.Reverse Automatic Braking (RAB)

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
VEHICLE CARE 331
1. Windshield Washer Fluid Reservoir.See Washer Fluid 0343.
2. Engine Coolant Surge Tank and Pressure Cap. See Cooling System
0 338.
3. Engine Air Cleaner/Filter 0336.
4. Engine Cooling Fan (Out of View). See Cooling System 0338.
5. Engine Oil Fill Cap. See Engine Oil
0 331.
6. Engine Oil Dipstick. See Engine Oil
0 331.
7. Remote Positive (+) Battery Terminal. See Jump Starting - North
America 0390.
8. Brake/Clutch Fluid Reservoir. See Brake Fluid 0348.
9. Remote Negative (-) Battery Terminal. See Jump Starting - North
America 0390.
10. Engine Compartment Fuse Block. See Engine Compartment Fuse Block
0 356.Engine Oil
To ensure proper engine performance
and long life, careful attention must
be paid to engine oil. Following these
simple, but important steps will help
protect your investment:
.Use engine oil approved to the
proper specification and of the
proper viscosity grade. See
“Selecting the Right Engine Oil” in
this section.
.Check the engine oil level regularly
and maintain the proper oil level.
See “Checking Engine Oil” and
“When to Add Engine Oil” in this
section.
.Change the engine oil at the
appropriate time. See Engine Oil Life
System 0333.
.Always dispose of engine oil
properly. See “What to Do with Used
Oil” in this section.
Checking Engine Oil
Check the engine oil level regularly,
every 650 km (400 mi), especially prior
to a long trip. The engine oil dipstick
handle is a loop. See Engine
Compartment Overview 0326 for the
location.
{Warning
The engine oil dipstick handle may
be hot; it could burn you. Use a
towel or glove to touch the dipstick
handle.
If a low oil Driver Information Center
(DIC) message displays, check the oil
level.
Follow these guidelines:
.To get an accurate reading, park the
vehicle on level ground. Check the
engine oil level after the engine has
been off for at least two hours.
Checking the engine oil level on
steep grades or too soon after
engine shutoff can result in
incorrect readings. Accuracy