change time CADILLAC CT4 2023 Owner's Guide

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
230 Climate Controls
Settings > Climate and Air
Quality > Ionizer > Select ON
or OFF.
Sensors
The solar sensor, located in
the defrost grille in the middle
of the instrument panel,
monitors the solar heat. Do
not cover the solar sensor or
the system will not work
properly.
There is also an exterior
temperature sensor behind
the front grille. This sensor
reads the outside air
temperature and helpsmaintain the temperature
inside the vehicle. Any cover
on the front of the vehicle,
could cause a false reading in
the displayed temperature.
The climate control system
uses the information from
these sensors to maintain
comfort settings by adjusting
the outlet temperature, fan
speed, and air delivery mode.
The system may also supply
cooler air to the side of the
vehicle facing the sun. The
recirculation mode will also be
used as needed to maintain
cool outlet temperatures.
Afterblow Feature
If equipped, under certain
conditions, the fan may stay
on or may turn on and off
several times after you turn
off and lock the vehicle. This is
normal.
Air Vents
Adjustable air vents are in the
center and on the sides of the
instrument panel, and on the
rear of the center console
storage.
Move the slider knobs to
change the direction of or to
close off the airflow.

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 283
Manual
Transmission
If equipped, this is the shift
pattern for the manual
transmission.
Caution
Shifting the vehicle initially
into any gear other than
1 (First) or R (Reverse) can
damage the clutch. Shift the
manual transmission in the
proper sequence, and time
the gear shifting with the(Continued)
Caution (Continued)
accelerator to avoid revving
the engine and damaging
the clutch.
Caution
The message MANUAL
TRANSMISSION—
RELEASE CLUTCH PEDAL
displays and a chime sounds
if the manual transmission
clutch pedal is partially
applied for an extended
period of time while the
vehicle is being driven.
Driving with the clutch pedal
applied can reduce the life
of the clutch and/or damage
it. Fully release the clutch
pedal after each gear
change.
Caution
The message REDUCED
PERFORMANCE —REDUCE
CLUTCH USE displays and
engine torque is
momentarily limited if
excessive manual
transmission clutch slip is
detected while the clutch
pedal is fully released. This
could be caused by a hot
clutch. Apply less pressure
on the accelerator pedal
when accelerating from a
stop. Also, fully release the
accelerator pedal during
gear changes. This will allow
the clutch to cool and should
prevent further clutch slip
while the clutch pedal is fully
released. If this message
displays repeatedly, see
your dealer. Repeated clutch
slip could cause permanent
damage.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
286 Driving and Operating
.When ARM is deactivated,
the gear number is white.
.If no gear number is
displayed while the shift
lever is in gear, service is
required. All rev matching
will be disabled and the
malfunction indicator lamp
will be on. See Malfunction
Indicator Lamp (Check
Engine Light)0118. The
clutch and manual
transmission will continue to
operate normally.
ARM will also:
.Be active above 28 km/h
(18 mph).
.Match engine speed up to
6100 rpm.
.Not operate when the
accelerator pedal is applied.
.Be disabled when the
coolant temperature is
below 0 °C (32 °F).
Drive Systems
All-Wheel Drive
Vehicles with this feature
always send engine power
to all four wheels. It is fully
automatic, and adjusts itself as
needed for road conditions.
Brakes
Electric Brake Boost
Vehicles equipped with
electric brake boost have
hydraulic brake circuits that
are electronically controlled
when the brake pedal is
applied during normal
operation. The system
performs routine tests and
turns off within a few minutes
after the vehicle is turned off.
Noise may be heard during
this time. If the brake pedal is pressed during the tests or
when the electric brake boost
system is off, a noticeable
change in pedal force and
travel may be felt. This is
normal.
Antilock Brake
System (ABS)
The Antilock Brake System
(ABS) helps prevent a braking
skid and maintain steering
while braking hard.
If there is a problem with ABS,
this warning light stays on.
See Antilock Brake System
(ABS) Warning Light
0121.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 287
ABS does not change the time
needed to get a foot on the
brake pedal and does not
always decrease stopping
distance. If you get too close
to the vehicle ahead, there will
not be enough time to apply
the brakes if that vehicle
suddenly slows or stops.
Always leave enough room
ahead to stop, even with ABS.
Using ABS
Do not pump the brakes. Just
hold the brake pedal down
firmly. Hearing and feeling ABS
operate is normal.
Braking in Emergencies
ABS allows steering and
braking at the same time. In
many emergencies, steering
can help even more than
braking.
Electric Parking Brake
The Electric Parking Brake
(EPB) can always be applied,
even if the vehicle is off. In
case of insufficient electrical
power, the EPB cannot be
applied or released. To
prevent draining the battery,
avoid unnecessary repeated
cycles of the EPB.The system has a red parking
brake status light and an
amber service parking brake
warning light. See Electric
Parking Brake Light
0121 and
Service Electric Parking Brake
Light 0121. There are also
parking brake-related Driver
Information Center (DIC)
messages.
Before leaving the vehicle,
check the red parking brake
status light to ensure that the
parking brake is applied.EPB Apply
To apply the EPB:
1. Be sure the vehicle is at a complete stop.
2. Press the EPB switch momentarily.
The red parking brake status
light will flash and then stay on
once the EPB is fully applied.
If the red parking brake status
light flashes continuously, then
the EPB is only partially
applied or there is a problem
with the EPB. A DIC message

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
298 Driving and Operating
Engine/Shift
Engine/Shift adjusts the
throttle response, gear
shifting and engine
performance. Throttle
response increases in the
Sport, Track, and Snow/Ice
settings, and gear shifting is
more aggressive.
–Snow/Ice, Tour, Sport, Track
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 theother 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 Driving
0342. For
more information on PTM, see
Competitive Driving Mode
0 298.
–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

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 305
the selected following gap. To
disengage ACC, apply the
brake. If the Traction Control
System (TCS) or StabiliTrak/
Electronic Stability Control
(ESC) system activates while
ACC is engaged, ACC may
automatically disengage. See
Traction Control/Electronic
Stability Control0290. When
road conditions allow ACC to
be safely used, ACC can be
turned back on. ACC will not
engage if the TCS or
StabiliTrak/ESC electronic
stability control system is
disabled.
ACC can reduce the need for
you to frequently brake and
accelerate, especially when
used on expressways,
freeways, and interstate
highways. When used on other
roads, you may need to take
over the control of braking or
acceleration more often.{Warning
ACC has limited braking
ability and may not have
time to slow the vehicle
down enough to avoid a
collision with another vehicle
you are following. This can
occur when vehicles
suddenly slow or stop
ahead, or enter your lane.
Also see “Alerting the
Driver” in this section.
Complete attention is
always required while driving
and you should be ready to
take action and apply the
brakes. See Defensive
Driving 0235.
{Warning
ACC will not detect or brake
for children, pedestrians,
animals, or other objects.
Do not use ACC when:
.On winding and hilly roads
or when the sensors are
blocked by snow, ice,
or dirt. The system may
not detect a vehicle
ahead. Keep the entire
front of the vehicle clean.
.Visibility is low, such as in
fog, rain, or snow
conditions. ACC
performance is limited
under these conditions.
.On slippery roads where
fast changes in tire
traction can cause
excessive wheel slip.
.When towing a trailer.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
310 Driving and Operating
Near Gap Setting
Since each gap setting
corresponds to a following
time (Far, Medium, or Near),
the following distance will vary
based on vehicle speed. The
faster the vehicle speed, the
further back your vehicle will
follow a vehicle detected
ahead. Consider traffic and
weather conditions when
selecting the following gap.
The range of selectable gaps
may not be appropriate for all
drivers and driving conditions. Changing the gap setting
automatically changes the
alert timing sensitivity (Far,
Medium, or Near) for the
Forward Collision Alert (FCA)
feature. See Forward Collision
Alert (FCA) System
0342.
Courtesy Gap (If Equipped
with Super Cruise)
Press and Hold
[on the
steering wheel when vehicle is
moving to temporarily increase
the gap with the vehicle ahead
to allow for merging traffic.
Press and Hold
[when
stopped to cancel ACC from
resuming automatically (if the
stop is brief) and remain
stationary. This can be used to
allow traffic to merge between
you and the vehicle ahead.
Press RES+ or the accelerator
pedal to resume ACC.
Following distance gap will
return to the original selection
after hold. Alerting the Driver
If ACC is engaged, driver
action may be required when
ACC cannot apply sufficient
braking because of
approaching a vehicle too
rapidly.
When this condition occurs,
the collision alert symbol will
flash on the windshield. Either
eight beeps will sound from
the front, or both sides of the
Safety Alert Seat will pulse
five times. To view available
settings for this feature, touch
the Settings icon on the
infotainment home page.
Select
“Vehicle” to display the
list of available options and
select “Collision/Detection
Systems”.
See Defensive Driving 0235.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 321
When ready to allow Super
Cruise to resume steering
again, position the vehicle in
the center of the lane, hold the
steering wheel until the
steering wheel light bar turns
green, and then release the
steering wheel when it is safe
to do so.
Super Cruise does not
respond to vehicles in other
lanes near your vehicle.
{Warning
To help prevent crashes
before making a lane
change:
.Always check mirrors.
.Glance over your shoulder.
.Use the turn signals.Super Cruise Lane Change
On Demand Lane Changes
Super Cruise can steer to
perform a single lane change
under certain conditions when
requested by the driver or
initiated by the Super Cruise
System.
To request a lane change:
1. Verify the lane next to your vehicle is clear and
conditions are safe to
make a lane change.
2. Use the turn signal lever to activate the turn signal in
the direction of the desired
lane change.
3. Return the turn signal lever to the neutral
position after the lane
change. See Turn and
Lane-Change Signals
0149.
4. To cancel a lane change, return the turn signal lever
to the neutral position,
move the lever in the opposite direction of the
lane change, or steer
manually at any time.
Automatic Lane Changes
If equipped with automatic
lane change, the Super Cruise
System may initiate a single
lane change when enabled
through vehicle settings under
following conditions:
.The Super Cruise System
may initiate a lane change to
the left to pass a slower
moving vehicle ahead and a
subsequent lane change to
right to return to your
original lane.
.Super Cruise System may
initiate a lane change to left
or right when current lane is
ending ahead.
.To cancel a Super Cruise
lane change, return the turn
signal lever to the neutral
position or move the turn
signal lever.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
322 Driving and Operating
.Super Cruise steering can be
overridden with manual
steering at any time to
cancel a Super Cruise lane
change.
.Super Cruise System may
initiate an automatic lane
change to left or right when
a slower moving vehicle is
detected in the adjacent
ending lane to provide space
for merging vehicle.
If Super Cruise detects that
traffic is clear, Super Cruise
will steer the vehicle to
perform the lane change.
A message appears on the
Driver Information Center
(DIC) during the lane change to
provide more information on
the status of the lane change.
Super Cruise Lane Change
functionality is only available
on Super Cruise capable
divided roads. Super Cruise Lane Change
may be disabled when a trailer
or other accessories (e.g. bike
rack, cargo tray, etc.) are
detected.
Do not use Super Cruise Lane
Change when towing a trailer.
The Super Cruise Lane
Change feature can be
customized to be Off, On
Demand Lane Change, or On
Demand Lane Change &
Automatic Lane Change
through vehicle settings.
Touch the Settings icon on the
infotainment home page.
Select
“Vehicle” to display the
list of available options and
select “Super Cruise Lane
Change”.
{Warning
Super Cruise Lane Change
may not detect a vehicle in
an adjacent lane. Always
supervise the driving task
and monitor traffic
(Continued)
Warning (Continued)
conditions when using the
Super Cruise Lane Change
feature. Only request a lane
change when traffic
conditions are safe for a
lane change, and always be
ready to manually steer the
vehicle. See“Steering
Manually and Changing
Lanes” listed previously in
this section.
Take Over Alert
{Warning
Super Cruise will not
maintain the vehicle’s speed
while the steering wheel
light bar is flashing red.
If the steering wheel light
bar flashes red, immediately
resume manual steering to
prevent serious injury or
death. If you do not resume
manual steering, the vehicle (Continued)