engine CADILLAC CT4 2022 Manual Online

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
260 DRIVING AND OPERATING
scroll through the options and make a
selection. To exit PTM, select
INACTIVE in the PTM menu.
Mode Description
Tour Mode
Use for normal city and highway
driving to provide a smooth, soft ride.
This mode provides a balance between
comfort and handling. This is the
standard mode. See“Mode Selection
Attributes” later in this section. When
Tour Mode is selected, no indicator
will display.
Sport Mode
Use this mode where road conditions
or personal preference demand a more
controlled response. When this mode
is selected, the vehicle immediately
downshifts. The vehicle also monitors
driving behaviors and automatically
enables Performance Shift Features
when spirited driving is detected. These features maintain lower
transmission gears to increase
available engine braking and improve
acceleration response. The vehicle will
exit this feature and return to normal
operation after a short period when
spirited driving is no longer detected.
The steering changes to provide more
precise control. If the vehicle has
Magnetic Ride Control, the suspension
changes to provide better cornering
performance.
See
“Mode Selection Attributes ”later
in this section.
Snow/Ice Mode
Use this mode for slippery surfaces to
help control wheel speed. This mode
can compromise the acceleration on
dry asphalt. This feature is not intended for use
when the vehicle is stuck in sand,
mud, or gravel. If the vehicle is stuck,
see
If the Vehicle Is Stuck 0227.
See “Mode Selection Attributes ”later
in this section.
Track Mode (V-Series Only)
When in Track Mode, the automatic
transmission and steering function
similar to Sport Mode. The accelerator
pedal is adjusted to give maximum
control during the highest level of
spirited driving. The Magnetic Ride
Control is set to the optimum level for
vehicle responsiveness. PTM can be
accessed through this mode. See
“Performance Traction Management ”
in Competitive Driving Mode 0264.
See “Mode Selection Attributes ”later
in this section.
While driving on a track, turn off
applicable driver assistance features.
For more information see Assistance
Systems for Driving 0301.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
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DRIVING AND OPERATING 261
My Mode
My Mode is used to personalize
everyday driving. This mode is
designed to allow the driver to
configure vehicle systems to their own
preference for city or normal driving.
Through the DIC, the following vehicle
systems may be available for
customization in this mode.
.Steering: Tour (default), Sport,
Track
.Suspension: Tour (default), Sport,
Track
.Brake Feel: Tour (default), Sport,
Track
.Engine Sound: Stealth, Tour
(Default), Sport, Track
For information on the range of
settings, see “Drive Mode
Customization.” V-Mode (V-Series Only)
V-Mode is used to personalize
dynamic driving. This mode is
designed to allow the driver to
configure vehicle subsystems to their
own preference for maximum
handling. V-Mode further enhances
the driver’s experience by adding an
Engine/Shift customization option.
Through the DIC, the following vehicle
systems may be available for
customization in this mode.
.Steering: Tour, Sport (default),
Track
.Suspension: Tour, Sport, (default),
Track
.Engine/Shift: Snow/Ice, Tour, Sport,
(default), Track
.Brake Feel: Tour, Sport, Track
.Engine Sound: Stealth, Tour, Sport
(default), Track
.PTM: OFF, WET, DRY, SPORT, RACE
1, RACE 2
For information on the range of
settings, see “Drive Mode
Customization.”

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
262 DRIVING AND OPERATING
Mode Selection Attributes
MODESTOUR
Default SPORT TRACK SNOW/ICE
Engine/Shift TourTourTrack Snow/Ice
Throttle Progression TourTourTrack Snow/Ice
Transmission Shift Mode TourSport Track Tour
Engine Sound TourSport Track Tour
Steering TourSport Track Tour
Suspension (if equipped with Magnetic Ride
Control) Tour
Sport Track Tour
Traction and Stability Control TourTourTrack Tour
Competitive Driving Mode (if equipped) Not Available Available Not Available Not Available
Performance Traction Mode (if equipped) Not Available Not Available Available Not Available
Brake Feel TourSport Track Tour
Throttle Progression
Adjusts throttle sensitivity by
selecting how quick or slow the
throttle reacts to input.
.Snow/Ice –The accelerator pedal
reduces engine torque at small
pedal inputs. This allows better
wheel control on slippery surfaces.
.Track –The accelerator pedal
adjusts to give maximum control
during the highest level of spirited
driving.
Transmission Shift Mode
Sport or Track –Dynamic
Performance Mode (DPM) allows the
transmission to hold the current gear after a quick release of a heavily
applied accelerator pedal. This
provides greater engine braking and
enhanced vehicle control without
using the paddles. DPM recognizes
aggressive cornering, heavy braking,
and high acceleration to select and

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
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DRIVING AND OPERATING 263
hold lower gears when not using
paddles. The shifts are also firmer to
increase the quickness of shifting.
Engine Sound
Adjusts the volume of engine noise.
The sound level changes when the
variable exhaust valves open.
Steering (Assist Effort)
Adjusts from a lighter steering feel in
Tour Mode to reduced assist in Sport
and Track Mode for more
steering feel.
Magnetic Ride Control (If Equipped)
Adjusts the shock dampening
firmness from a comfort in Tour Mode
to an optimized responsiveness tune
in Sport and Track.
Stability Control
.Competitive Mode allows less
computer control to permit some
slide and drift and is selected with
the TCS/StabiliTrak button–only
available in Sport Mode.
.StabiliTrak/Electronic Stability
Control (ESC) can be turned off by
pressing and holding the TCS/
StabiliTrak button for five seconds.
Brake Feel
Adjusts brake pedal sensitivity by
selecting how quick or slow the brakes
respond to input.
Drive Mode Customization
The following settings can be changed
using the Drive Mode Customization
Menu. See Settings > Vehicle > Drive
Mode Customization in the center
display to customize My Mode or
V-Mode.
Steering
Steering adjusts the effort required to
turn the steering wheel. The steering
wheel offers better feedback in the
Tour setting, but requires more effort
in the Sport and Track settings.
–Tour, Sport, Track
Suspension
Suspension adjusts the firmness of the
suspension in the vehicle. Suspension
adjusts the stiffness of the shocks and/or springs. The ride is more
comfortable at lower settings and is
stiffer at higher settings for better
control.
–Tour, Sport, Track
Brake Feel
Brake Feel adjusts the brake pedal
response. Settings range from a slower
response for more comfortable driving
to the quickest response for quicker
deceleration. Brake pedal travel
decreases and caliper pressure
increases in the Sport and Track
settings.
–Tour, Sport, Track
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

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
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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
DRIVING AND OPERATING 265
If available, PTM can also be activated
through a PTM switch on the steering
wheel by pressing up on the switch.
From there a PTM menu will appear
in the DIC. Press up or down on the
PTM switch to scroll through the
options and make a selection. To exit
PTM, select INACTIVE in the PTM
menu, turn off PTM in the V-Mode
configuration page, or press the ESC
switch once.
Selecting PTM states may modify Off,
Wet, Dry, Sport, Race 1, and Race 2
V-Mode customization options.
In vehicles with a PTM steering wheel
switch, Inactive, Wet, Dry, Sport, Race
1, and Race 2 PTM states are available
through the moding menu.
In vehicles without a PTM steering
wheel switch, Wet, Dry, Sport, Race 1,
and Race 2 PTM states are available
through the moding menu.
The following is a DIC display
description and the recommended
usage of each mode:WET
.Intended for all driver skill levels.
.Wet or damp conditions only
—not
intended for use in heavy rain or
standing water.
.StabiliTrak/ESC is on and engine
power is reduced based on
conditions.
DRY
.For use by less experienced drivers
or while learning a new track.
.Dry conditions only.
.StabiliTrak/ESC is on and engine
power is slightly reduced.
SPORT
.For use by drivers who are familiar
with the track.
.Dry conditions only.
.Requires more driving skill
than DRY.
.StabiliTrak/ESC is on and more
engine power is available than
in DRY.
RACE 1
.For use by drivers who are familiar
with the track.
.Dry conditions only.
.Requires more driving skill than
modes DRY or SPORT.
.StabiliTrak/ESC is off and available
engine power is the same as SPORT.
RACE 2
.For use by experienced drivers who
are familiar with the track.
.Dry conditions only.
.Requires more driving skill than in
other modes.
.StabiliTrak/ESC is off and engine
power is available for maximum
cornering speed.
In any PTM Mode, Launch Control is
available. Use PTM Race 2 for the
most consistent performance during
drag strip use. See “Custom Launch
Control ”in Track Events and
Competitive Driving (V-Series and
V-Series Blackwing) 0213.
Launch Control
If equipped, Launch Control is
available within Competitive Driving
Mode and PTM to allow high levels of
vehicle acceleration in a straight line.
Launch Control is a form of traction
control that manages tire spin while

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
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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) -
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DRIVING AND OPERATING 311
camera. The LKA system does not
need service. Clean the outside of the
windshield behind the rearview mirror.
LKA assistance and/or LDW alerts
may occur due to tar marks, shadows,
cracks in the road, temporary or
construction lane markings, or other
road imperfections. This is normal
system operation; the vehicle does not
need service. Turn LKA off if these
conditions continue.
Fuel
Top Tier Fuel
GM recommends the use of TOP TIER
Detergent Gasoline to keep the engine
clean, reduce engine deposits, and
maintain optimal vehicle performance.
Look for the TOP TIER Logo or see
www.toptiergas.com for a list of TOP
TIER Detergent Gasoline marketers
and applicable countries.
Recommended Fuel (LSY
2.0L L4 Turbo Engine)
Premium unleaded gasoline meeting
ASTM specification D4814 with a
posted octane rating (R+M)/2 of 91
or greater is recommended.
If unavailable, unleaded gasoline with
a posted octane rating of 87 may be
used, but will result in reduced
performance and driveability. If heavyknocking is heard when using gasoline
rated at 91 or greater, the engine
needs service.
Do not use any fuel labeled E85 or
FlexFuel. Do not use gasoline with
ethanol levels greater than 15% by
volume.
Recommended Fuel (L3B
2.7L L4 Turbo and LF4 3.6L
V6 Twin Turbo Engines)
Premium unleaded gasoline meeting
ASTM specification D4814 with a
posted octane rating (R+M)/2 of 91 or
greater is required. The use of the
correct fuel is an important part of
the proper maintenance of the vehicle
and a condition of the vehicle
warranty. If heavy knocking is heard
when using gasoline rated at 91 or
greater, the engine needs service.

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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)

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DRIVING AND OPERATING 313
Warning (Continued)
.Do not leave the fuel pump
unattended.
.Avoid using electronic devices
while refueling.
.Do not re-enter the vehicle while
pumping fuel.
.Keep children away from the fuel
pump and never let children
pump fuel.
.Before touching the fill nozzle,
touch a metallic object to
discharge static electricity from
your body.
.Fuel can spray out if the fill
nozzle is inserted too quickly.
This spray can happen if the
tank is nearly full, and is more
likely in hot weather. Insert the
fill nozzle slowly and wait for any
hiss noise to stop before
beginning to flow fuel.
To open the fuel door, push and
release the rearward center edge of
the door.
The capless refueling system does not
have a fuel cap. Fully insert and latch
the fill nozzle, begin fueling.
{Warning
Overfilling the fuel tank by more
than three clicks of a standard fill
nozzle may cause:
.Vehicle performance issues,
including engine stalling and
damage to the fuel system.(Continued)
Warning (Continued)
.Fuel spills.
.Under certain conditions, fuel
fires.
Be careful not to spill fuel. Wait
five seconds after you have finished
pumping before removing the fill
nozzle. Clean fuel from painted
surfaces as soon as possible. See
Exterior Care 0397. Push the fuel door
closed until it latches.
{Warning
If a fire starts while you are
refueling, do not remove the fill
nozzle. Shut off the flow of fuel by
shutting off the pump or by
notifying the station attendant.
Leave the area immediately.