oil level CADILLAC CT4 2022 Owners Manual

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
2 INTRODUCTION
Using this Manual
To quickly locate information about
the vehicle, use the Index in the back
of the manual. It is an alphabetical
list of what is in the manual and the
page number where it can be found.
Danger, Warning, and
Caution
Warning messages found on vehicle
labels and in this manual describe
hazards and what to do to avoid or
reduce them.
{Danger
Danger indicates a hazard with a
high level of risk which will result
in serious injury or death.
{Warning
Warning indicates a hazard that
could result in injury or death.
Caution
Caution indicates a hazard that
could result in property or vehicle
damage.
A circle with a slash through it is a
safety symbol which means“Do not,”
“Do not do this,” or“Do not let this
happen.”
Symbols
The vehicle has components and
labels that use symbols instead of
text. Symbols are shown along with
the text describing the operation or
information relating to a specific
component, control, message, gauge,
or indicator.
M: Shown when the owner’s manual
has additional instructions or
information.
*: Shown when the service manual
has additional instructions or
information.
0: Shown when there is more
information on another page —
“see page.”
Vehicle Symbol Chart
Here are some additional symbols that
may be found on the vehicle and what
they mean. See the features in this
manual for information.
u: Air Conditioning System
G:Air Conditioning Refrigerant Oil
9:Airbag Readiness Light
!:Antilock Brake System (ABS)
$:Brake System Warning Light
9:Dispose of Used Components
Properly
P: Do Not Apply High Pressure
Water
B: Engine Coolant Temperature
_:Flame/Fire Prohibited

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
82 INSTRUMENTS AND CONTROLS
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . . . . . 83
Steering Wheel Controls . . . . . . . . . . 83
Heated Steering Wheel . . . . . . . . . . . . 83
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Windshield Wiper/Washer . . . . . . . . 83
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Power Outlets . . . . . . . . . . . . . . . . . . . . . . 86
Wireless Charging . . . . . . . . . . . . . . . . . 86
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . . . . . . 89
Instrument Cluster (Base Level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Instrument Cluster (Uplevel) . . . . . 91
Speedometer . . . . . . . . . . . . . . . . . . . . . . . 95
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Trip Odometer . . . . . . . . . . . . . . . . . . . . . 95
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . 95
Fuel Gauge . . . . . . . . . . . . . . . . . . . . . . . . . 96
Engine Coolant Temperature
Gauge (Base Level) . . . . . . . . . . . . . . . 96 Engine Coolant Temperature
Gauge (Uplevel) . . . . . . . . . . . . . . . . . . 97
Seat Belt Reminders . . . . . . . . . . . . . . . 97
Airbag Readiness Light . . . . . . . . . . . . 98
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Charging System Light . . . . . . . . . . . . 99
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . . . . . 99
Brake System Warning Light . . . . 101
Electric Parking Brake Light . . . . . 102
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . . . . 102
Performance Shifting Light . . . . . . 103
Automatic Vehicle Hold (AVH) Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Lane Keep Assist (LKA) Light . . . 103
Automatic Emergency Braking (AEB) Disabled Light . . . . . . . . . . . 104
Vehicle Ahead Indicator . . . . . . . . . 104
Pedestrian Ahead Indicator . . . . . . 104
Traction Off Light . . . . . . . . . . . . . . . . 104
StabiliTrak OFF Light . . . . . . . . . . . . 105
Traction Control System (TCS)/ StabiliTrak Light . . . . . . . . . . . . . . . . 105
Engine Coolant Temperature Warning Light . . . . . . . . . . . . . . . . . . 105
Driver Mode Control Light . . . . . . . 106 Tire Pressure Light . . . . . . . . . . . . . . . 107
Engine Oil Pressure Light . . . . . . . . 107
Low Fuel Warning Light . . . . . . . . . 108
Security Light . . . . . . . . . . . . . . . . . . . . . 108
High-Beam On Light . . . . . . . . . . . . . 108
Lamps On Reminder . . . . . . . . . . . . . 108
Cruise Control Light . . . . . . . . . . . . . . 109
Door Ajar Light . . . . . . . . . . . . . . . . . . . 109
Information Displays
Driver Information Center (DIC)
(Base Level) . . . . . . . . . . . . . . . . . . . . . 109
Driver Information Center (DIC) (Uplevel) . . . . . . . . . . . . . . . . . . . . . . . . . 112
Head-Up Display (HUD) . . . . . . . . . 115
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . . . . . . 119
Engine Power Messages . . . . . . . . . . 119
Vehicle Speed Messages . . . . . . . . . 120
Vehicle Personalization
Vehicle Personalization . . . . . . . . . . 120
Universal Remote System
Universal Remote System . . . . . . . . 125
Universal Remote System Programming . . . . . . . . . . . . . . . . . . . 125
Universal Remote System Operation . . . . . . . . . . . . . . . . . . . . . . . . 127

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
INSTRUMENTS AND CONTROLS 107
This light comes on when Sport Mode
is selected.
This light comes on when Race 1
Mode is selected.
This light comes on when Race 2
Mode is selected.
Tire Pressure Light
For vehicles with the Tire Pressure
Monitor System (TPMS), this light
comes on briefly when the vehicle is
started. It provides information about
tire pressures and the TPMS.
When the Light Is On Steady
This indicates that one or more of the
tires are significantly underinflated.
A Driver Information Center (DIC) tire
pressure message may also display.
Stop as soon as possible, and inflate
the tires to the pressure value shown
on the Tire and Loading Information
label. SeeTire Pressure 0370.
When the Light Flashes First and
Then Is On Steady
If the light flashes for about a minute
and then stays on, there may be a
problem with the TPMS. If the problem is not corrected, the light will
come on at every ignition cycle. See
Tire Pressure Monitor Operation
0373.
Engine Oil Pressure Light
Caution
Lack of proper engine oil
maintenance can damage the
engine. Driving with the engine oil
low can also damage the engine.
The repairs would not be covered
by the vehicle warranty. Check the
oil level as soon as possible. Add oil
if required, but if the oil level is
within the operating range and the
oil pressure is still low, have the
vehicle serviced. Always follow the
maintenance schedule for changing
engine oil.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
112 INSTRUMENTS AND CONTROLS
Follow Distance/Gap Setting :When
Adaptive Cruise Control (ACC) is not
engaged, the current follow time to
the vehicle ahead is displayed as a
time value on this page. When ACC
has been engaged, the display
switches to the gap setting page. This
page shows the current gap setting
along with the vehicle ahead telltale.
Driver Assistance : If equipped,
shows information for Lane Keep
Assist (LKA) and Forward Collision
Alert (FCA).
Battery Voltage : Shows the current
battery voltage.
Coolant Temperature : Shows the
engine coolant temperature in either
degrees Celsius (°C) or degrees
Fahrenheit (°F).
Oil Temperature : Shows the engine
oil temperature in either degrees
Celsius (°C) or degrees Fahrenheit (°F).
Engine Hours (Hourmeter) : Shows
the total number of hours the engine
has run. The display also shows the
engine idle hours. Engine Boost :
Displays engine
manifold pressure relative to ambient
air pressure. It will display boost
pressure generated by the
turbocharging system.
Transmission Fluid Temperature :
Shows the temperature of the
automatic transmission fluid in either
degrees Celsius (°C) or degrees
Fahrenheit (°F).
Info Page Options : Scroll to choose
which info pages appear on the DIC.
Press the thumbwheel to select or
deselect.
Blank Page : Allows for no
information to be displayed in the
cluster info display areas.
Driver Information Center
(DIC) (Uplevel)
The DIC is displayed in the
instrument cluster. It shows the status
of many vehicle systems.
DIC information is broken down into
two main zones: Left Zone :
Displays on the
instrument cluster to the left of the
speedometer.
Right Zone : Displays on the
instrument cluster to the right of the
speedometer.
SorT: Press to move left or right
between the interactive display zones
in the cluster. Press the thumbwheel
to select.
yorz: Use the thumbwheel to
scroll up or down in a list. Press the
thumbwheel to select.

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
214 DRIVING AND OPERATING
{Warning
Prior to each track event and again
before returning to public roads,
tighten the wheel nuts with a
torque wrench to the proper torque
specification. Wheel nuts that are
improperly or incorrectly tightened
can cause the wheels to become
loose or come off, resulting in a
crash. SeeCapacities and
Specifications 0424 for wheel nut
torque specifications.
Caution
Low oil levels can damage the
engine. If using the vehicle for
competitive driving, the engine may
use more oil than it would with
normal use. Check the oil level
often during competitive driving.
Competitive Driving Mode can be
selected. See Driver Mode Control
0 258.
Seat Belts
Lap-Shoulder Belt
If equipped, the driver seat belt has an
Automatic Locking Retractor (ALR).
This feature is useful in performance
driving scenarios where the driver
wants to be held in the seat more
tightly to take advantage of the
aggressive bolstering of the seat.
1. Move the seat 8-10 cm (3-4 in) rearward from the normal driving
position.
2. Pull the driver shoulder belt out as far as it will go, until it stops, to set
the lock. While holding the
shoulder belt in this position,
buckle the belt.
When the shoulder belt is released,
the retractor will make a ratchet
sound when it retracts. When the
retractor lock is set, the belt can be
tightened but not pulled out of the
retractor.
3. Adjust the belt, and then move the seat forward 8-10 cm (3-4 in) to
the desired driving position. This will secure the belt. The belt fit
should be tight, but not
uncomfortable.
To unlatch the belt, press the
button on the buckle. The belt
should return to its stowed
position.
Axle Fluid
Axles must have 2 400 km (1,500 mi)
before being used in track driving.
The rear axle fluid temperatures may
be higher than when driving in severe
conditions. Drain and refill with new
fluid after the first racing or
competitive driving event, and then
after every 24 hours of racing or
competitive driving. See your dealer
for the correct fluid.
Caution
During a first time track or racing
event, high axle temperatures can
occur. Damage could be caused to
the axle and would not be covered
by the vehicle warranty. Do not
(Continued)

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
DRIVING AND OPERATING 217
fluid is over a month old or unknown,
replace the brake fluid before track
events and competitive driving. Do
not use silicone or DOT 5 brake fluids.
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.
Check the fluid level before each
competitive driving event.
Brake System Flushing & Bleeding
The J55 brake system requires specific
processes for bleeding and fluid
flushing. These can be found in the
service manual.
Properly bleeding the brake system is
required for proper operation of the
hydraulic brake system.
Brake Leak Detection
The hydraulic braking system has
advanced diagnostic capability to help
detect hydraulic leaks, trapped air,and other performance issues. These
diagnostics are active when the
hydraulic system is powered. In order
to avoid inadvertently setting a leak
Diagnostic Trouble Code (DTC),
disconnect the battery before
servicing the brake system.
If the vehicle sets a DTC related to a
brake system leak, the Brake System
Warning Light will come on and
vehicle speed may be limited to
100 kph (62 mph). Any time a leak
DTC is set, the vehicle should be
inspected carefully for evidence of a
leak and should be repaired
immediately. See your dealer.
Brake Fade Warning Assist
The Brake Fade Warning Assist
system monitors the performance of
the brake system. If the system
detects brake fade, or if the brake
fluid is near the boiling point, the
driver will be alerted.
The Brake Fade Warning Assist
system is designed for use with the
factory-installed brake pads or GM
approved replacement pads. If the
brake pads on the vehicle need to be
replaced, use GM approved brakepads. If this is not done, the brake
fade warning system may not function
properly.
Stage 1 :
The DIC displays a “Reduce
Braking to Avoid Overheating”
message, a chime sounds and brake
pedal effort and travel is increased.
When the message displays, the driver
should back up braking points and
reduce brake usage in order to reduce
brake temperature. This will allow for
continued lapping with no speed
limitations.
Stage 2 : The DIC displays a Brakes
Overheated Service Now message, a
chime sounds, and brake pedal effort
and travel is further increased. This
code indicates that the brake fluid
temperature is excessive and is about
to boil. The system limits vehicle
speed to 100 km/h (62 mph). The
driver should immediately start a cool
down lap if on the track. If this
message displays, the vehicle needs to
be serviced. The brake system needs
to cool down, and the brake fluid
must be immediately flushed with
DOT 4 for street use, or to a qualified

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
218 DRIVING AND OPERATING
DOT 4 race fluid for track use. Boiled
brake fluid is compromised and must
be replaced.
Brake Burnishing
For vehicles equipped with front
Brembo brake systems:
Performance/racing brake pads are
required prior to racing or closed track
driving. Vehicles with option code JE2
have performance brake pads. This
procedure should not be performed on
other models as damage may result.
New brake pads must be burnished
before racing or other competitive
driving.
Caution
Performing the brake burnish
procedure on a base brake system
can result in brake damage.
Caution
The new vehicle break-in period
should be completed before
performing the brake burnish(Continued)
Caution (Continued)
procedure, otherwise damage may
occur to the powertrain/engine. See
New Vehicle Break-In0231.
Caution
Brake fade will occur during this
track burnish procedure and can
cause brake pedal travel and force
to increase. This could extend
stopping distance until the brakes
are fully burnished.
When this procedure is performed as
instructed, it will not damage the
brakes. The brake pads will smoke and
produce an odor. The braking force
and pedal travel may increase. After
the procedure, the brake pads may
appear white at the rotor contact.
Perform this procedure only on dry
pavement, in a safe manner, and in
compliance with all local and state
ordinances/laws regarding motor
vehicle operation. Street High Performance Brake
Burnishing Procedure
This section is for the V-Series
Blackwing with J57 carbon ceramic
brake rotors only.
This procedure should only be run on
a track or other non-public area, and
only on dry pavement.
Caution
Brake fade will occur during this
track burnish procedure and can
cause brake pedal travel and force
to increase. This could extend
stopping distance until the brakes
are fully burnished.
1. From a stop, accelerate as rapidly as possible without activating
traction control to a speed of
100 km/h (60 mph).
2. Using the G-Force Gauge in the HUD display, use enough pedal
force to completely stop the vehicle
in four to five seconds. (~0.7g Decel
level to stop the vehicle in a
straight line). If ABS activates,
braking is too hard.

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)