automatic transmission CADILLAC CT4 2021 Owner's Manual

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
INTRODUCTION 5
1.Air Vents 0200.
2. Exterior Lamp Controls 0126.
Turn Signal Lever. See Turn and
Lane-Change Signals 0129.
3. Tap Shift Controls (If Equipped). See Manual Mode (Electronic Shifter)
0 235 or
Manual Mode (Mechanical Shifter)
0 234.
4. Cruise Control 0248.
Adaptive Cruise Control (Advanced)
0 251 (If Equipped).
Forward Collision Alert (FCA) System
0 283 (If Equipped).
Heated Steering Wheel 082 (If
Equipped).
5. Instrument Cluster (Base Level) 088
or
Instrument Cluster (Uplevel) 090.
Driver Information Center (DIC)
Display. See Driver Information
Center (DIC) (Base Level) 0107 or
Driver Information Center (DIC)
(Uplevel) 0110.
6. Steering Wheel Controls 0137 (If
Equipped).
7. Windshield Wiper/Washer 082. 8. Infotainment. See
Overview0135.
9. Light Sensor. See Automatic
Headlamp System 0128.
10. Hazard Warning Flashers 0129.
11. Dual Automatic Climate Control
System 0196.
12. Heated and Ventilated Front Seats
037 (If Equipped).
13. Lane Keep Assist (LKA) 0291 (If
Equipped).
14. Traction Control/Electronic Stability
Control 0239.
Stop/Start Disable Switch. See Stop/
Start System 0221.
Automatic Vehicle Hold (AVH) 0239.
MODE Button or
«/ªButton
(V-Series Only). See Driver Mode
Control 0241.
15. Wireless Charging Pad (If Equipped) (Out of View). See
Wireless Charging 085.
16. Park Assist Button. See Assistance
Systems for Parking or Backing
0 277. 17. Shift Lever. See
Automatic
Transmission (Mechanical Shifter)
0 227 or
Automatic Transmission (Electronic
Shifter) 0229.
18. ENGINE START/STOP Button. See Ignition Positions 0219.
19. Horn 082.
20. Steering Wheel Adjustment 082.
21. Head-Up Display (HUD) 0112 (If
Equipped).
22. Hood Release (Out of View). See Hood 0307.
23. Instrument Panel Illumination
Control 0130.
24. Data Link Connector (DLC) (Out of View). See Malfunction Indicator
Lamp (Check Engine Light) 097.
25. Electric Parking Brake 0237 (If
Equipped).

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
18 KEYS, DOORS, AND WINDOWS
To unlock the doors:
.PressKon the power door lock
switch.
.Shift the transmission into P (Park).
Automatic door locking cannot be
disabled. Automatic door unlocking
can be programmed. See Vehicle
Personalization 0117.
Lockout Protection
If the vehicle is on or in ACC/
ACCESSORY and the power door lock
switch is pressed with the driver door
open, all the doors will lock and only
the driver door will unlock.
If the vehicle is off and locking is
requested while a door is open, when
all doors are closed the vehicle will
check for keys inside. If any remote
key programmed to the vehicle is
detected and the number of keys
inside has not reduced, the driver door
will unlock and the horn will chirp
three times.
Lockout Protection can be manually
overridden with the driver door open
by pressing and holding
Qon the
power door lock switch.
Safety Locks
With Folding Mirrors
Without Folding Mirrors The rear door safety locks prevent
passengers from opening the rear
doors from inside the vehicle.
Press
{
vto activate the safety locks
on the rear doors. The indicator light
in the switch will illuminate when
activated.
The rear door power windows are also
disabled. See Power Windows 026.
Press
{ vagain to deactivate the
safety locks.
If an inside rear door handle is being
pulled at the same time the safety
lock is deactivated, only that door will
remain locked and the indicator light
may flash. Release the handle, then
press the safety lock twice to
deactivate the safety locks.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
84 INSTRUMENTS AND CONTROLS
feature on or off, see“Rainsense
Wipers ”under Vehicle Personalization
0 117.
Keep this area of the windshield clear
of debris to allow for best system
performance.
AUTO : When enabled, move the
windshield wiper lever to AUTO. Turn
the
Oband on the wiper lever to
adjust the sensitivity.
.Turn the band up for more
sensitivity to moisture.
.Turn the band down for less
sensitivity to moisture.
.Move the windshield wiper lever out
of the AUTO position to deactivate
Rainsense. Wiper Arm Assembly Protection
When using an automatic car wash,
move the windshield wiper lever to
OFF. This disables the automatic
Rainsense windshield wipers.
With Rainsense, if the transmission is
in N (Neutral) and the vehicle speed is
very slow, the wipers will
automatically stop at the base of the
windshield.
The wiper operations return to normal
when the transmission is no longer in
N (Neutral) or the vehicle speed has
increased.
f:
Pull the windshield wiper lever
toward you to spray windshield
washer fluid and activate the wipers.
The wipers will continue until the
lever is released or the maximum
wash time is reached. When the
windshield wiper lever is released,
additional wipes may occur depending
on how long the windshield washer
had been activated. See Washer Fluid
0 323 for information on filling the
windshield washer fluid reservoir.
Compass
The vehicle has a compass display on
the Driver Information Center (DIC).
The compass receives its heading and
other information from the Global
Positioning System (GPS) antenna,
StabiliTrak/Electronic Stability Control
(ESC), and vehicle speed information.
The compass system is designed to
operate for a certain number of miles
or degrees of turn before needing a
signal from the GPS satellites. When
the compass display shows CAL, drive
the vehicle for a short distance in an
open area where it can receive a GPS
signal. The compass system will
automatically determine when a GPS
signal is restored and provide a
heading again.
Clock
Set the time and date using the
infotainment system. See "Time /
Date" under Settings0176.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
INSTRUMENTS AND CONTROLS 109
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) 0324.
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 0348 and
Tire Pressure Monitor Operation 0349.
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.
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.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
LIGHTING 129
If the vehicle is started in a dark
garage, the automatic headlamp
system comes on immediately. If it is
light outside when the vehicle leaves
the garage, there is a slight delay
before the automatic headlamp
system turns off the headlamps.
During that delay, the instrument
cluster may not be as bright as usual.
Make sure the instrument panel
brightness control is in the full bright
position. SeeInstrument Panel
Illumination Control 0130.
When it is bright enough outside, the
headlamps will turn off.
The automatic headlamp system turns
off when the exterior lamp control is
turned to
Oor the ignition is off. For
vehicles sold in Canada, this control
only works when the transmission is
in P (Park).
Lights On with Wipers
If the windshield wipers are activated
in daylight with the engine on, and
the exterior lamp control is in AUTO,
the headlamps, parking lamps, and
other exterior lamps come on. The
transition time for the lamps coming on varies based on wiper speed. When
the wipers are not operating, these
lamps turn off. Move the exterior
lamp control to
Oor;to disable
this feature.
Hazard Warning Flashers
|: Press this button to make the
front and rear turn signal lamps flash
on and off. Release the button for at
least one second and press again to
turn the flashers off.
The hazard warning flashers turn on
automatically if the airbags deploy.
Turn and Lane-Change
Signals
Move the lever all the way up or down
to signal a turn.
An arrow on the instrument cluster
flashes in the direction of the turn or
lane change.
Raise or lower the lever until the
arrow starts to flash to signal a lane
change. Hold it there until the lane
change is completed. If the lever is
briefly pressed and released, the turn
signal flashes three times.
The turn and lane-change signal can
be turned off manually by moving the
lever back to its original position.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
184 INFOTAINMENT SYSTEM
Delete Profile
Touch to remove the profile from the
vehicle.
Touch Remove or Cancel.
Teen Driver
If equipped, this allows multiple keys
to be registered for beginner drivers to
encourage safe driving habits. When
the vehicle is started with a Teen
Driver key, it will automatically
activate certain safety systems, allow
setting of some features, and limit the
use of others. The Report Card will
record vehicle data about driving
behavior that can be viewed later.
When the vehicle is started with a
registered key, the Driver Information
Center (DIC) displays a message that
Teen Driver is active.
To access:1. Touch Settings on the Home Page, then touch Vehicle, and then Teen
Driver. 2. Create a Personal Identification
Number (PIN) by choosing a
four-digit PIN. Re-enter the PIN to
confirm. To change the PIN, touch
Change PIN.
The PIN is required to:.Register or unregister keys.
.Change Teen Driver settings.
.Change or clear the Teen
Driver PIN.
.Access or delete Report Card data.
Register 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 engine.
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 rear cupholder. The
key does not need to be the one
that started the vehicle. See Remote
Keyless Entry (RKE) System
Operation 07for rear cupholder
location.
6. From the Teen Driver menu, touch Setup Keys..If the transmitter key has not
previously been registered, the
option to add the key displays.
Touch Setup and a confirmation
message displays. Teen Driver
restrictions will be applied
whenever this key is used to
operate the vehicle.
.If the transmitter key has
already been registered, the
option to remove the key
displays. If Remove is touched,
the transmitter key is no longer
registered. A confirmation
message displays, and Teen
Driver restrictions will not be
applied if this transmitter key is
used to operate the vehicle.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
202 DRIVING AND OPERATING
Driving and
Operating
Driving Information
Driving for Better FuelEconomy . . . . . . . . . . . . . . . . . . . . . . . . 203
Distracted Driving . . . . . . . . . . . . . . . . 203
Defensive Driving . . . . . . . . . . . . . . . . 204
Impaired Driving . . . . . . . . . . . . . . . . . 204
Control of a Vehicle . . . . . . . . . . . . . . 204
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Off-Road Recovery . . . . . . . . . . . . . . . . 206
Loss of Control . . . . . . . . . . . . . . . . . . . 206
Track Events and Competitive Driving (V-Series Only) . . . . . . . . . 207
Driving on Wet Roads . . . . . . . . . . . 211
Hill and Mountain Roads . . . . . . . . 212
Winter Driving . . . . . . . . . . . . . . . . . . . . 213
If the Vehicle Is Stuck . . . . . . . . . . . 214
Vehicle Load Limits . . . . . . . . . . . . . . 214
Starting and Operating
New Vehicle Break-In . . . . . . . . . . . . 218
Composite Materials . . . . . . . . . . . . . 218
Ignition Positions . . . . . . . . . . . . . . . . 219
Starting the Engine . . . . . . . . . . . . . . 220
Stop/Start System . . . . . . . . . . . . . . . . 221
Engine Heater . . . . . . . . . . . . . . . . . . . . 222 Retained Accessory
Power (RAP) . . . . . . . . . . . . . . . . . . . . 223
Shifting Into Park (Mechanical Shifter) . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Shifting Into Park (Electronic
Shifter) . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Shifting out of Park (Mechanical Shifter) . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Shifting out of Park (Electronic Shifter) . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Parking over Things That Burn . . . . . . . . . . . . . . . . . . . . . . . 226
Extended Parking . . . . . . . . . . . . . . . . . 226
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . . . . . . 226
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Automatic Transmission
Automatic Transmission(Mechanical Shifter) . . . . . . . . . . . . 227
Automatic Transmission (Electronic Shifter) . . . . . . . . . . . . . 229
Manual Mode (Mechanical Shifter) . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Manual Mode (Electronic Shifter) . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . . . . . 236
Brakes
Electric Brake Boost . . . . . . . . . . . . . . 236
Antilock Brake System (ABS) . . . . 236
Electric Parking Brake . . . . . . . . . . . . 237
Brake Assist . . . . . . . . . . . . . . . . . . . . . . . 238
Hill Start Assist (HSA) . . . . . . . . . . . 238
Automatic VehicleHold (AVH) . . . . . . . . . . . . . . . . . . . . . 239
Ride Control Systems
Traction Control/ElectronicStability Control . . . . . . . . . . . . . . . . 239
Driver Mode Control . . . . . . . . . . . . . 241
Competitive Driving Mode . . . . . . . 246
Limited-Slip Differential . . . . . . . . . 248
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . . . . . 248
Adaptive Cruise Control (Advanced) . . . . . . . . . . . . . . . . . . . . . . 251
Super Cruise . . . . . . . . . . . . . . . . . . . . . . 260
Driver Assistance Systems
Driver Assistance Systems . . . . . . . 275
Assistance Systems for Parking or Backing . . . . . . . . . . . . . . . . . . . . . . . 277
Rear Pedestrian Alert . . . . . . . . . . . . 282
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . . . 283
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . 283

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
208 DRIVING AND OPERATING
Engine Oil
Check the oil level often during track
events and competitive driving and
keep the oil level at or near the
upper mark.
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.
Automatic 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 your
dealer.
Brakes
Brake cooling can be improved if the
front brake disc splash shield and
front tire deflector are removed.
Removing the shield will require that
the suspension bushings and wheelspeed wires visible to the brake disc
be protected with insulated thermal
wrapping.
Caution
Removing the splash shield can
degrade wet braking performance,
as well as introduce brake pedal
pulsation, due to brake disc
exposure to road debris. Only
remove the front brake disc splash
shield and front tire deflector when
driving in track events.
Brake Pad Wear Sensors
(V-Series Only)
If equipped, the brake pad wear
sensors need to be removed from the
brake calipers prior to any track or
racing event. The original sensors can
be reinstalled if significant brake pad
wear is not observed. The sensor
should not extend beyond the brake
pad surface at the rotor contact.
If this condition is observed, the brake
pad life system needs to be disabled
until a new set of brake pads and
sensors are installed and the system
reset. Brake Fluid
.Before racing, replace existing brake
fluid with a qualified racing brake
fluid from a sealed container. Brake
fluid with a dry boiling point
>279 °C (534 °F) is qualified.
If racing brake fluid is used, replace
it with GM approved brake fluid
before driving on public roads. See
Recommended Fluids and Lubricants
0
391.
.Do not use silicone-based fluids.
If racing brake fluid is in the vehicle
and the age of the brake fluid is over a
month old or unknown, replace the
brake fluid between racing/closed
track driving.
Caution
Failure to change the brake fluid
and transfer case fluid after any
performance or race track driving
could result in damage not covered
by the vehicle warranty. Have the
brake fluid and transfer case fluid
changed by your dealer after any (Continued)

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
DRIVING AND OPERATING 219
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. SeeRemote
Keyless Entry (RKE) System Operation
0 7.
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) 0223.
If the vehicle is not in P (Park), the
ignition will return to ACC/
ACCESSORY and display a message in
the Driver Information Center (DIC).
When the vehicle is shifted into
P (Park), the ignition system will
switch to OFF.
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), and turn the ignition to
OFF. On vehicles with an automatic
transmission, the shift lever must
be in P (Park) to turn the ignition
switch to the OFF position.
4. Set the parking brake. See Electric
Parking Brake 0237.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
DRIVING AND OPERATING 221
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. SeeRemote
Keyless Entry (RKE) System
Operation 07.
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
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 ACC/
ACCESSORY. The DIC displays SHIFT
TO PARK. Once the shift lever is
moved to P (Park), the vehicle
turns off.
If the remote key is not detected
inside the vehicle when it is turned off
the DIC displays a message.
Stop/Start System
The Stop/Start system will shut off
the engine to help conserve fuel.
It has components designed for the
increased number of starts.
{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 093. When the brake
pedal is released or the accelerator
pedal is pressed, the engine will
restart.