2022 CADILLAC CT4 differential

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
208 DRIVING AND OPERATING
Driving and
Operating
Driving Information
Driving for Better FuelEconomy . . . . . . . . . . . . . . . . . . . . . . . . 209
Distracted Driving . . . . . . . . . . . . . . . . 210
Defensive Driving . . . . . . . . . . . . . . . . 210
Impaired Driving . . . . . . . . . . . . . . . . . 210
Control of a Vehicle . . . . . . . . . . . . . . 211
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Off-Road Recovery . . . . . . . . . . . . . . . . 212
Loss of Control . . . . . . . . . . . . . . . . . . . 212
Track Events and Competitive Driving (V-Series and V-Series
Blackwing) . . . . . . . . . . . . . . . . . . . . . . 213
Driving on Wet Roads . . . . . . . . . . . 224
Hill and Mountain Roads . . . . . . . . 225
Winter Driving . . . . . . . . . . . . . . . . . . . . 226
If the Vehicle Is Stuck . . . . . . . . . . . 227
Vehicle Load Limits . . . . . . . . . . . . . . 228
Starting and Operating
New Vehicle Break-In . . . . . . . . . . . . 231
Composite Materials . . . . . . . . . . . . . 232
Ignition Positions . . . . . . . . . . . . . . . . 232
Starting the Engine . . . . . . . . . . . . . . 234
Stop/Start System . . . . . . . . . . . . . . . . 235 Engine Heater . . . . . . . . . . . . . . . . . . . . 236
Retained Accessory
Power (RAP) . . . . . . . . . . . . . . . . . . . . 237
Shifting Into Park (Mechanical Shifter) . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Shifting Into Park (Electronic Shifter) . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Shifting out of Park (Mechanical Shifter) . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Shifting out of Park (Electronic Shifter) . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Parking (Manual Transmission) . . . . . . . . . . . . . . . . . . . 240
Parking over Things That Burn . . . . . . . . . . . . . . . . . . . . . . . 240
Extended Parking . . . . . . . . . . . . . . . . . 240
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . . . . . . 241
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Automatic Transmission
Automatic Transmission(Mechanical Shifter) . . . . . . . . . . . . 242
Automatic Transmission (Electronic Shifter) . . . . . . . . . . . . . 244
Manual Mode (Mechanical Shifter) . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Manual Mode (Electronic Shifter) . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Manual Transmission
Manual Transmission . . . . . . . . . . . . 250
Active Rev Match . . . . . . . . . . . . . . . . 252
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . . . . . 253
Brakes
Electric Brake Boost . . . . . . . . . . . . . . 253
Antilock Brake System (ABS) . . . . 253
Electric Parking Brake . . . . . . . . . . . . 254
Brake Assist . . . . . . . . . . . . . . . . . . . . . . . 255
Hill Start Assist (HSA) . . . . . . . . . . . 256
Automatic VehicleHold (AVH) . . . . . . . . . . . . . . . . . . . . . 256
Ride Control Systems
Traction Control/ElectronicStability Control . . . . . . . . . . . . . . . . 257
Driver Mode Control . . . . . . . . . . . . . 258
Competitive Driving Mode . . . . . . . 264
Limited-Slip Differential . . . . . . . . . 266
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . . . . . 266
Adaptive Cruise Control (Advanced) . . . . . . . . . . . . . . . . . . . . . . 269
Super Cruise . . . . . . . . . . . . . . . . . . . . . . 278

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
264 DRIVING AND OPERATING
Engine Sound
Engine sound adjusts the volume of
engine noise. The settings range from
quietest to loudest volume from
Stealth through Track.
–Stealth, Tour, Sport, Track
PTM (If Equipped)
PTM controls vehicle performance
systems for professional handling on
race tracks. Traction Control and
Stability Control are reduced when
moving through each of the settings.
Changing PTM settings may also
automatically change the other
subsystem settings. While driving on a
track, turn off all active safety
features. While driving on a track,
turn off applicable driver assistance
features. For more information, see
Assistance Systems for Driving0301.
For more information on PTM, see
Competitive Driving Mode 0264.
–Off, Wet, Dry, Sport, Race 1, Race 2
Competitive Driving Mode
To select this optional handling mode,
place the vehicle in Sport Mode and
press
gtwo times and the Driver Information Center (DIC) will display
COMPETITIVE MODE ON. While in
the Competitive Driving Mode, the
traction off light
iand StabiliTrak/
ESC OFF light
gwill come on in the
instrument cluster. Traction Control
System (TCS) does not limit wheel
spin, the Electronic Limited-Slip
Differential (eLSD) allows increased
vehicle agility, and more effort is
required to turn the steering wheel.
See “Limited-Slip Differential (V–Series
Only)” later in this section. Adjust
your driving accordingly.
Press
gagain, or turn the vehicle to
accessory mode and restart the
vehicle, to turn TCS back on. The
traction off light
iand StabiliTrak/
ESC OFF light
gwill go out.
Caution
When traction control is turned off,
or Competitive Driving Mode is
active, it is possible to lose traction.
Performance Traction
Management (PTM)
If equipped, PTM can be activated
through V-Mode customization or by
pressing the ESC switch twice while in
Track Mode. Depending on available
options and trim levels, it can also be
activated through a separate PTM
switch on the steering wheel.
To activate PTM through V-Mode
customization, select the desired PTM
state in the center stack (Settings >
Vehicle > Drive Mode Customization >
V-Mode). Press the V-Mode switch
once to activate V-Mode. When PTM
is configured, a message will appear in
the DIC “V-Mode Active –Press Again
for PTM On –ESC May be Disabled.”
To confirm and enter PTM, press the
V-Mode switch again. The PTM state
can now be modified using the MODE
switch or changing the V-Mode PTM
settings in the center stack. Both the
V-Mode and PTM indicators are
displayed. To exit PTM, press the ESC
switch. To cancel, press the center
dismiss button on the steering wheel
(V-Mode remains active).

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
266 DRIVING AND OPERATING
launching the vehicle. This feature is
intended for use during closed course
race events where consistent zero to
60 and quarter mile times are
desirable.
Launch Control is only available when
the following criteria are met:
.Competitive Driving Mode is
selected or any of the PTM modes
are selected. The traction off light
comes on in the instrument cluster
and the appropriate DIC message
displays.
.The vehicle is not moving.
.The steering wheel is pointing
straight.
Automatic Transmissions
.The brake pedal is firmly pressed to
the floor, equivalent to a panic
brake event.
.The accelerator pedal is rapidly
applied to wide open throttle. If the
vehicle rolls due to wide open
throttle, release the throttle, press
the brake pedal more firmly, and
reapply the accelerator to wide open
throttle.Launch Control will initially limit
engine speed as you rapidly apply the
accelerator pedal to wide open
throttle. Allow the engine rpm to
stabilize. A smooth, quick release of
the brake pedal, while maintaining the
fully pressed accelerator pedal, will
manage wheel slip.
After the vehicle is launched, the
system continues in Competitive
Driving Mode or PTM.
Competitive Driving Mode, PTM, and
Launch Control are systems designed
for a closed course race track and not
intended for public roads. The systems
are not intended to compensate for
lack of driver experience or familiarity
with the race track.
Limited-Slip Differential
If equipped, the Electronic
Limited-Slip Differential (eLSD) is
automatically activated. eLSD actively
monitors vehicle sensors and driver
inputs to determine the amount of
change for the conditions. With eLSD,
the vehicle has:
.Enhanced high-speed control.
.Improved traction through corners,
allowing more acceleration.
.More precise steering.
.Increased vehicle agility.
.Integration with StabiliTrak/
Electronic Stability Control (ESC).
For vehicles with eLSD, driven under
severe conditions, the rear axle fluid
should be changed. See Competitive
Driving Mode 0264 and
Maintenance Schedule 0408.
Cruise Control
{
Warning
Cruise control can be dangerous
where you cannot drive safely at a
steady speed. Do not use cruise
control on winding roads or in
heavy traffic.
Cruise control can be dangerous on
slippery roads. On such roads, fast
changes in tire traction can cause
excessive wheel slip, and you could
lose control. Do not use cruise
control on slippery roads.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
SERVICE AND MAINTENANCE 411
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 k m/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)@ @@
Replace spark plugs. Inspect spark plug wires and/or
boots.@ @
Change transfer case fluid, if equipped with
AWD. (4)@
Change rear axle fluid, if equipped with limited slip
differential. (4)@@@
Change rear axle fluid, without limited slip
differential. (4)@
Change front axle fluid, if equipped with AWD. (4)@
Drain and fill engine cooling system. (5)@
Visually inspect accessory drive belts. (6)@
Replace brake fluid. (7)
Replace windshield wiper blades. (8)
@ @ @ @ @ @ @ @ @ @
Replace hood and/or body lift support gas struts. (9)@ @
Replace air conditioning desiccant. (10)

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
SERVICE AND MAINTENANCE 413
Maintenance Schedule
Additional Required Services -
Severe12 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)@ @@
Replace spark plugs. Inspect spark plug wires and/or
boots.@ @
Change automatic transmission fluid and filter.@@@
Change transfer case fluid, if equipped with
AWD. (4)@@@
Change rear axle fluid, if equipped with limited slip
differential. (4)@@@
Change rear axle fluid, without limited slip
differential. (4)@ @
Change front axle fluid, if equipped with AWD. (4)@@@
Drain and fill engine cooling system. (5)@
Visually inspect accessory drive belts. (6)@
Replace brake fluid. (7)
Replace windshield wiper blades. (8)
@ @ @ @ @ @ @ @ @ @
Replace hood and/or body lift support gas struts. (9)@ @
Replace air conditioning desiccant. (10)

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
TECHNICAL DATA 425
ApplicationCapacities
Metric English
Engine Oil with Filter
I2.0L L4 Engine 5.0 L
5.3 qt
I2.7L L4 Engine 5.7 L
6.0 qt
I3.6L V6 Engine 6.6 L
7.0 qt
Fuel Tank 66.0 L17.5 gal
Transfer Case –AWD 0.78 L0.8 qt
Front Axle –AWD 0.4 L0.42 qt
Rear Axle
IOpen Differential - Small 0.75 L
0.79 qt
IOpen Differential - Large 1.0 L
1.0 qt
IMechanical Limited Slip 1.0 L
1.0 qt