automatic transmission CADILLAC CT4 2023 User Guide

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
212 Infotainment System
.Change Teen Driver
settings.
.Change or clear the Teen
Driver PIN.
.Access or delete Report
Card data.
Set up/Add keys to activate
Teen Driver and assign
restrictions to the key:
Any vehicle key can be
registered, up to a maximum
of eight keys. Label the key to
tell it apart from the
other keys.
For a pushbutton start
system: 1. Start the vehicle.
2. For automatic transmissions, the vehicle
must be in P (Park). For
manual transmissions, the
vehicle must be stopped
with the parking brake set.
3. From the Settings menu, touch Vehicle and then
Teen Driver.
4. Enter the PIN. 5. Place the remote key you
wish to register in the
transmitter pocket. The
key does not need to be
the one that started the
vehicle. See Remote Key
Operation 09 for
transmitter pocket
location.
6. From the Teen Driver menu, touch Setup Keys or
Add/Remove Teen
Driver Keys.
.If the remote key has
not previously been
registered, the option to
add the key displays.
Touch Add and a
confirmation message
displays. Teen Driver
restrictions will be
applied whenever this
remote key is used to
operate the vehicle.
.If the remote key has
already been registered,
the option to remove
the key displays.
If Remove is touched,
the remote key is no longer registered.
A confirmation message
displays, and Teen
Driver restrictions will
not be applied if this
remote key is used to
operate the vehicle.
In vehicles with a pushbutton
start system, if a Teen Driver
and a non-Teen Driver key are
both present at start up, the
vehicle will recognize the
non-Teen Driver key to start
the vehicle. The Teen Driver
settings will not be active.
For a keyed ignition system: 1. Start the vehicle.
2. For automatic transmissions, the vehicle
must be in P (Park). For
manual transmissions, the
vehicle must be stopped
with the parking brake set.
3. From the Settings menu, touch Vehicle and then
Teen Driver.
4. Enter the PIN.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
232 Driving and Operating
Driving and
Operating
Driving Information
Driving for Better FuelEconomy . . . . . . . . . . . . . . . . . . . 234
Distracted Driving . . . . . . . . . 234
Defensive Driving . . . . . . . . . . 235
Impaired Driving . . . . . . . . . . . 235
Control of a Vehicle . . . . . . 235
Braking . . . . . . . . . . . . . . . . . . . . . . . 235
Steering . . . . . . . . . . . . . . . . . . . . . . 236
Off-Road Recovery . . . . . . . 237
Loss of Control . . . . . . . . . . . . 237
Track Events and Competitive Driving
(V-Series and V-Series
Blackwing) . . . . . . . . . . . . . . . . . 238
Driving on Wet Roads . . . . 251
Hill and Mountain Roads . . . . . . . . . . . . . . . . . . . . . . . 252
Winter Driving . . . . . . . . . . . . . . 253
If the Vehicle Is Stuck . . . . 255
Vehicle Load Limits . . . . . . . 255
Starting and Operating
New Vehicle Break-In . . . . 259
Composite Materials . . . . . 260
Ignition Positions . . . . . . . . . . . 261 Starting the Engine . . . . . . . 263
Stop/Start System . . . . . . . . 264
Engine Heater . . . . . . . . . . . . . . 266
Retained Accessory
Power (RAP) . . . . . . . . . . . . . . . 267
Shifting Into Park (Mechanical Shifter) . . . . . 267
Shifting Into Park (Electronic Shifter) . . . . . . 268
Shifting out of Park (Mechanical Shifter) . . . . . 269
Shifting out of Park (Electronic Shifter) . . . . . . 270
Parking (Manual Transmission) . . . . . . . . . . . . . 270
Parking over Things That Burn . . . . . . . . . . . . . . . . . . . 271
Extended Parking . . . . . . . . . . 271
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . 271
Running the Vehicle While Parked . . . . . . . . . . . . . . 272
Automatic Transmission
Automatic Transmission(Mechanical Shifter) . . . . . 272
Automatic Transmission (Electronic Shifter) . . . . . . 275
Manual Mode (Mechanical Shifter) . . . . . 280 Manual Mode (Electronic
Shifter) . . . . . . . . . . . . . . . . . . . . . . 281
Manual Transmission
Manual Transmission . . . . . 283
Active Rev Match . . . . . . . . . 285
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . 286
Brakes
Electric Brake Boost . . . . . 286
Antilock BrakeSystem (ABS) . . . . . . . . . . . . . 286
Electric Parking Brake . . . 287
Brake Assist . . . . . . . . . . . . . . . . 289
Hill Start Assist (HSA) . . . . 289
Automatic Vehicle Hold (AVH) . . . . . . . . . . . . . . . . . 289
Ride Control Systems
Traction Control/Electronic Stability
Control . . . . . . . . . . . . . . . . . . . . . . 290
Driver Mode Control . . . . . . 292
Competitive Driving Mode . . . . . . . . . . . . . . 298
Limited-Slip Differential . . . . . . . . . . . . . . . . . 301

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
240 Driving and Operating
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 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 0378.
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 0378.
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 0355.
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

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 249
1. Using the DriverInformation Center (DIC)
buttons on the right side
of the steering wheel,
navigate to the Launch
Control menu. See Driver
Information Center (DIC)
(Base Level) 0129 or
Driver Information Center
(DIC) (Uplevel) 0132.
2. Press SEL to select Custom.3. Scroll down toLaunch RPM.
4. Adjust the desired RPM: 1200–2400 for automatic
transmissions and 2400–
4000 RPM for manual
transmissions.
Manual Transmission 5. Set Slip Target to custom
desired setting.
.Manual Trans: Apply full
throttle to activate
Launch Control and
quickly release the
clutch pedal to launch
the vehicle.
Automatic Transmission
.Auto Trans: Firmly press
and hold the brake pedal
to activate Launch
Control.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
250 Driving and Operating
6. Auto Trans Only - Quicklyapply full throttle. Release
the brake pedal to launch
the vehicle.
Line Lock (If Equipped)
{Warning
The vehicle may move
unexpectedly when using
Line Lock, which could cause
injury to persons or property
located nearby. Only use
Line Lock on a closed track
where there is a large clear
area around all sides of the
vehicle. Be ready to apply
the brakes immediately if the
vehicle begins to move. Do
(Continued)
Warning (Continued)
not use Line Lock in an area
that is accessible to the
public or where people or
property are located near
the vehicle.
Caution
Attempting to shift when
the drive wheels are
spinning and do not have
traction may cause damage
to the transmission. Damage
caused by misuse of the
vehicle is not covered by the
vehicle warranty. Do not
attempt to shift when the
drive wheels do not have
traction.
Line Lock allows for locking
the front brakes
independently of the rear
brakes. This allows the rear
tires to spin when the throttle
is applied. To enter Line Lock, all of
these conditions must be met:
.The vehicle must be in
Track Mode.
.Performance Traction
Management (PTM) Mode
must be enabled.
.The steering wheel must be
straight.
.The driver door must be
closed.
.The vehicle must be in D
(Drive) for an automatic
transmission or 1 (First) gear
for a manual transmission.
.The parking brake must not
be engaged.
.The vehicle must be stopped
on level ground. The
accelerator pedal must not
be applied.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 261
{Warning
Rocker extensions may
break under pressure,
resulting in property damage
or injury. Do not stand on
the rocker extension or use
it as a step.
{Warning
Rear end spoilers may break
under pressure, resulting in
property damage or injury.
Do not push the vehicle by
the spoiler or use the spoiler
as a handle.
Ignition Positions
The vehicle has an electronic
keyless ignition with
pushbutton start.
The Remote Key must be in
the vehicle for the system to
operate. If the pushbutton
start is not working, the
vehicle may be near a strong
radio antenna signal causing
interference to the Keyless
Access system. See Remote
Key Operation09.
To shift out of P (Park), the
vehicle must be on and the
brake pedal must be applied. Stopping the Engine/OFF (No
Indicator Lights) :
When the
vehicle is stopped, press
ENGINE START/STOP once to
turn the engine off.
If the vehicle is in P (Park), the
ignition will turn off, and
Retained Accessory
Power (RAP) will remain active.
See Retained Accessory
Power (RAP) 0267.
If the vehicle has an automatic
transmission, and is not in
P (Park), the ignition will return
to accessory mode and display
a message in the Driver
Information Center (DIC).
When the vehicle is shifted
into P (Park), the ignition
system will turn OFF.
If the vehicle has a manual
transmission and is stationary,
the ignition will turn off, and
Retained Accessory
Power (RAP) will remain active.
See Retained Accessory
Power (RAP) 0267.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
262 Driving and Operating
The vehicle may have an
electric steering column lock.
The lock is activated when the
vehicle is switched to OFF and
the driver door is opened.
A sound may be heard as the
lock actuates or releases. The
steering column lock may not
release with the wheels
turned off center. If this
happens, the vehicle may not
start. Move the steering wheel
from left to right while
attempting to start the
vehicle. If this does not work,
the vehicle needs service.
Do not turn the engine off
when the vehicle is moving.
This will cause a loss of power
assist in the brake and
steering systems and disable
the airbags.
If the vehicle must be shut off
in an emergency:1. Brake using a firm and steady pressure. Do not
pump the brakes
repeatedly. This may deplete power assist,
requiring increased brake
pedal force.
2. Shift the vehicle to N (Neutral). This can be
done while the vehicle is
moving. After shifting to
N (Neutral), firmly apply the
brakes and steer the
vehicle to a safe location.
3. Come to a complete stop. Shift to P (Park) with an
automatic transmission,
or Neutral with a manual
transmission. Turn the
ignition off.
4. Set the parking brake. See Electric Parking Brake
0287.
{Warning
Turning off the vehicle while
moving may cause loss of
power assist in the brake
and steering systems and
disable the airbags. While
driving, only shut the vehicle
off in an emergency. If the vehicle cannot be pulled
over, and must be shut off
while driving, press and hold
ENGINE START/STOP for
longer than two seconds,
or press twice within
five seconds.
Accessory Mode (Amber
Indicator Light) :
This mode
allows the use of some
electrical accessories when
the engine is off.
With the ignition off, pressing
the button once without the
brake pedal applied will place
the ignition system in
accessory mode.
The ignition will switch from
accessory mode to OFF after
five minutes to prevent
battery rundown.
ON/RUN/START (Green
Indicator Light) : This mode is
for driving and starting. With
the ignition off, and the brake
pedal applied, pressing the
button once will place the
ignition system in ON/RUN/
START. Once engine cranking

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 263
begins, release the button.
Engine cranking will continue
until the engine starts. See
Starting the Engine0263. The
ignition will then remain on.
Service Mode
This power mode is available
for service and diagnostics,
and to verify the proper
operation of the malfunction
indicator lamp as may be
required for emission
inspection purposes. With the
vehicle off, and the brake
pedal not applied, pressing
and holding ENGINE
START/STOP for more than
five seconds will place the
vehicle in Service Mode. The
instruments and audio
systems will operate as they
do in ON/RUN, but the vehicle
will not be able to be driven.
The engine will not start in
Service Mode. Press the
button again to turn the
vehicle off.Starting the Engine
Place the transmission in the
proper gear
Caution
If you add electrical parts or
accessories, you could
change the way the engine
operates. Any resulting
damage would not be
covered by the vehicle
warranty. See Add-On
Electrical Equipment 0366.
Automatic Transmission
Move the shift lever to
P (Park) or N (Neutral). To
restart the vehicle when it is
already moving, use
N (Neutral) only.
Caution
Do not try to shift to P (Park)
if the vehicle is moving.
If you do, you could damage (Continued)
Caution (Continued)
the transmission. Shift to
P (Park) only when the
vehicle is stopped.
Manual Transmission
The shift lever should be in
Neutral and the parking brake
engaged. Hold the clutch pedal
down to the floor, press the
brake pedal, and start the
engine.
Starting the Vehicle 1. For vehicles with an automatic transmission,
press the brake pedal, then
press ENGINE START/
STOP on the instrument
panel. For a manual
transmission, place the
shift lever in Neutral with
the parking brake engaged.
Hold the clutch pedal down
to the floor, press the
brake pedal, then press
ENGINE START/STOP.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
264 Driving and Operating
If the remote key is not in
the vehicle, if there is
interference, or if the
remote key battery is low,
a Driver Information
Center (DIC) message will
display. See Remote Key
Operation09.
Caution
Cranking the engine for long
periods of time, by pressing
ENGINE START/STOP
immediately after cranking
has ended, can overheat and
damage the cranking motor,
and drain the battery. Wait
at least 15 seconds between
each try, to let the cranking
motor cool down.
2. If the engine does not start after five to 10 seconds,
especially in very cold
weather (below −18 °C or
0 °F), it could be flooded
with too much gasoline.
Try pushing the
accelerator pedal all the
way to the floor and hold it there, then press ENGINE
START/STOP for up to a
maximum of 15 seconds.
Wait at least 15 seconds
between each try, to allow
the cranking motor to cool
down. When the engine
starts, let go of the button
and the accelerator. If the
vehicle starts briefly but
then stops again, do the
same thing. This clears the
extra gasoline from the
engine. Do not race the
engine immediately after
starting it. Operate the
engine and transmission
gently until the oil warms
up and lubricates all
moving parts.
Stopping the Engine
If the vehicle has an automatic
transmission, move the shift
lever to P (Park) and press and
hold ENGINE START/STOP on
the instrument panel, until the
engine shuts off. If the shift
lever is not in P (Park), the
engine shuts off and the
ignition goes to accessory
mode. The DIC displays SHIFT
TO PARK. Once the shift lever
is moved to P (Park), the
vehicle turns off.
If the vehicle has a manual
transmission, before getting
out of the vehicle, shift to
1 (First) or R (Reverse) and
apply the parking brake. Then
turn off the ignition off by
pressing ENGINE START/
STOP and release the clutch
pedal when the engine has
stopped.
If the remote key is not
detected inside the vehicle
when it is turned off the DIC
displays a message.
Stop/Start System
If equipped, the Stop/Start
system will shut off the engine
to help conserve fuel. It has
components designed for the
increased number of starts.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 265
{Warning
The automatic engine Stop/
Start feature causes the
engine to shut off while the
vehicle is still on. Do not exit
the vehicle before shifting to
P (Park). The vehicle may
restart and move
unexpectedly. Always shift
to P (Park), and then turn
the ignition off before
exiting the vehicle.
Auto Engine Stop/Start
When the brakes are applied
and the vehicle is at a
complete stop, the engine may
turn off. When stopped, the
tachometer displays AUTO
STOP. See Tachometer 0113.
When the brake pedal is
released or the accelerator
pedal is pressed, the engine
will restart. To maintain vehicle
performance, other conditions
may cause the engine to
automatically restart before
the brake pedal is released.
Auto Stops may not occur
and/or Auto Starts may occur
because:
.The climate control settings
require the engine to be
running to cool or heat the
vehicle interior.
.The vehicle battery needs to
charge.
.The vehicle battery has
recently been disconnected.
.Minimum vehicle speed has
not been reached since the
last Auto Stop.
.The accelerator pedal is
pressed.
.The engine or transmission
is not at the required
operating temperature.
.The outside temperature is
not in the required operating
range.
.The vehicle transmission is
shifted out of D (Drive) to
any gear other than P (Park).
.Certain driver modes have
been selected. See Driver
Mode Control
0292.
.The vehicle is on a steep hill
or grade.
.The driver door has been
opened or the driver seat
belt has been unbuckled.
.The hood has been opened.
.The Auto Stop has reached
the maximum allowed time.
Auto Stop Disable Switch