
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Instruments and Controls 141
.Driver Assistance Systems
.Cruise Control
.Lighting and Bulb
Replacement
.Wiper/Washer Systems
.Doors and Windows
.Seat Belts
.Airbag Systems
.Engine and Transmission
.Tire Pressure
.Battery
Engine Power
Messages
REDUCED
ACCELERATION DRIVE
WITH CARE
This message displays when
the vehicle's propulsion power
is reduced. A reduction in
propulsion power can affect
the vehicle's ability to
accelerate. If this message is
on, but there is no observed
reduction in performance,
proceed to your destination.
Under certain conditions theperformance may be reduced
the next time the vehicle is
driven. The vehicle may be
driven while this message is
on, but maximum acceleration
and speed may be reduced.
Anytime this message stays
on, or displays repeatedly, the
vehicle should be taken to
your dealer for service as
soon as possible.
Under certain operating
conditions, propulsion will be
disabled. Try restarting after
the ignition has been off for
two minutes.
Vehicle Speed
Messages
SPEED LIMITED TO
XXX KM/H (MPH)
This message shows that the
vehicle speed has been limited
to the speed displayed. The
limited speed is a protection
for various propulsion and
vehicle systems, such as
lubrication, thermal, brakes,
suspension, Teen Driver if
equipped, or tires.
Universal Remote
System
See Radio Frequency
Statement
0494.
Universal Remote
System Programming
If equipped, these buttons are
in the overhead console.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Lighting 149
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.
If after signaling a turn or lane
change, the arrow flashes
rapidly or does not come on, a
signal function may be
inoperative. This vehicle may
be equipped with LED lighting.
For replacement of any LED
lighting, contact your dealer.
Cornering Lamps
If equipped with cornering
lamps, they automatically
come on when all of the
following occur:
.The low-beam headlamps
are on.
.The turn signals are
activated or the steering
wheel is at a turning angle.
.The vehicle speed is below
40 km/h (25 mph).

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 - 5/4/22
Vehicle Care 371
If doing some of your own
service work, use the proper
service manual. It tells you
much more about how to
service the vehicle than this
manual can. To order the
proper service manual, see
Publication Ordering
Information0494.
This vehicle has an airbag
system. Before attempting to
do your own service work, see
Servicing the Airbag-Equipped
Vehicle 070.
If equipped with remote
vehicle start, open the hood
before performing any service
work to prevent remote
starting the vehicle
accidentally. See Remote
Vehicle Start 016.
Keep a record with all parts
receipts and list the mileage
and the date of any service
work performed. See
Maintenance Records 0477.Caution
Even small amounts of
contamination can cause
damage to vehicle systems.
Do not allow contaminants
to contact the fluids,
reservoir caps, or dipsticks.
Hood
{Warning
For vehicles with auto
engine stop/start, turn the
vehicle off before opening
the hood. If the vehicle is on,
the engine will start when
the hood is opened. You or
others could be injured.
{Warning
Components under the hood
can get hot from running the
engine. To help avoid the
risk of burning unprotected
skin, never touch these
(Continued)
Warning (Continued)
components until they have
cooled, and always use a
glove or towel to avoid
direct skin contact.
Clear any snow from the hood
before opening.
To open the hood:
1. Pull the hood release lever with the
isymbol. It is
on the lower left side of
the instrument panel.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/5/22
Customer Information 493
If a Crash Occurs
If there has been an injury, call
emergency services for help.
Do not leave the scene of a
crash until all matters have
been taken care of. Move the
vehicle only if its position puts
you in danger, or you are
instructed to move it by a
police officer.
Give only the necessary
information to police and other
parties involved in the crash.
For emergency towing, see
Roadside Assistance Program
0487.
Gather the following
information:
.Driver name, address, and
telephone number
.Driver license number
.Owner name, address, and
telephone number
.Vehicle license plate number
.Vehicle make, model, and
model year
.Vehicle Identification
Number (VIN)
.Insurance company and
policy number
.General description of the
damage to the other vehicle
Choose a reputable repair
facility that uses quality
replacement parts. See
“Collision Parts” earlier in this
section.
If the airbag has inflated, see
What Will You See after an
Airbag Inflates? 064.
Managing the Vehicle
Damage Repair Process
In the event that the vehicle
requires damage repairs, GM
recommends that you take an
active role in its repair. If you
have a pre-determined repair
facility of choice, take the
vehicle there, or have it towed
there. Specify to the facility
that any required replacement
collision parts be original equipment parts, either new
Genuine GM parts or recycled
original GM parts. Remember,
recycled parts will not be
covered by the GM vehicle
warranty.
Insurance pays the bill for the
repair, but you must live with
the repair. Depending on your
policy limits, your insurance
company may initially value the
repair using aftermarket parts.
Discuss this with the repair
professional, and insist on
Genuine GM parts. Remember,
if the vehicle is leased, you
may be obligated to have the
vehicle repaired with Genuine
GM parts, even if your
insurance coverage does not
pay the full cost.
If another party's insurance
company is paying for the
repairs, you are not obligated
to accept a repair valuation
based on that insurance
company's collision policy
repair limits, as you have no
contractual limits with that

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
516 INDEX
LATCH, Lower Anchorsand Tethers for
Children . . . . . . . . . . . . . . . . . . . . . . . . . 80
LED Lighting . . . . . . . . . . . . . . . . . . 403
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Illumination Control . . . . . . . . 150
LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . 403
Lights Airbag Readiness . . . . . . . . . . . 116
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 121
Automatic Emergency Braking (AEB)
Disabled . . . . . . . . . . . . . . . . . . . . . 123
Automatic Vehicle Hold . . . . . . . . . . . . . . . . 122
Brake System Warning . . . . . . . . . . . . . . . . . . . . . 120
Charging System . . . . . . . . . . . . 117
Check Engine
(Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 118
Cruise Control Light . . . . . . . 128
Door Ajar . . . . . . . . . . . . . . . . . . . . . . 129
Driver Mode Control . . . . . . . 125
Electric Parking Brake . . . . . 121 Lights (cont'd)
Engine Coolant
Temperature
Warning . . . . . . . . . . . . . . . . . . . . . 124
Engine Oil Pressure . . . . . . . . 127
Gauges and Indicators . . . . 105
High-Beam On . . . . . . . . . . . . . . . 128
Lane Keep Assist . . . . . . . . . . . 122
Low Fuel Warning . . . . . . . . . . 127
Performance Shifting . . . . . 122
Seat Belt Reminders . . . . . . 115
Security . . . . . . . . . . . . . . . . . . . . . . . 128
Service Electric Parking Brake . . . . . . . . . . . . . . . 121
StabiliTrak OFF . . . . . . . . . . . . . 124
Tire Pressure . . . . . . . . . . . . . . . . 126
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . 124
Traction Off . . . . . . . . . . . . . . . . . . 123
Limited-Slip Differential . . . . 301
Locks
Automatic Door . . . . . . . . . . . . . . . 21
Delayed Locking . . . . . . . . . . . . . 20
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Lockout Protection . . . . . . . . . . 21
Power Door . . . . . . . . . . . . . . . . . . . 20
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Loss of Control . . . . . . . . . . . . . . .237
Low Fuel Warning Light . . . . 127
Low-Profile Tires . . . . . . . . . . . . . 416
Lower Anchors and
Tethers for Children
(LATCH System) . . . . . . . . . . . . . 80
Lumbar Adjustment . . . . . . . . . . 40
Front Seats . . . . . . . . . . . . . . . . . . . 40
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . . 477
Maintenance Schedule . . . . 469 Recommended Fluidsand Lubricants . . . . . . . . . . . 474
Malfunction Indicator Lamp . . . . . . . . . . . . . . .118
Manual Mode . . . . . . . . . . . . . . . . . . . . 280, 281
Transmission . . . . . . . . . . . . . . . 283
Transmission Fluid . . . . . . . . 382
Map Data Updates . . . . . . . . . . . 184
Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Massage Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Matching
Active Rev . . . . . . . . . . . . . . . . . . . 285

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
INDEX 517
MediaAvoiding Untrusted
Devices . . . . . . . . . . . . . . . . . . . . . . 166
Memory Seats . . . . . . . . . . . . . . . . . . . 41
Messages Engine Power . . . . . . . . . . . . . . . 141
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 140
Vehicle Speed . . . . . . . . . . . . . . . 141
Mirrors Automatic Dimming . . . . . . . . . 30
Automatic DimmingRearview . . . . . . . . . . . . . . . . . . . . . . 31
Convex . . . . . . . . . . . . . . . . . . . . . . . . . 28
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Interior Rearview . . . . . . . . . . . . . 31
Manual Rearview . . . . . . . . . . . . . 31
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Tilt in Reverse . . . . . . . . . . . . . . . . 30
Mode Driver Control . . . . . . . . . . . . . . 292
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . . 424
Multi-band Antenna . . . . . . . . . . 166
Multi-Point Vehicle Inspection (MPVI) . . . . . . . . . . .472N
NavigationConnected Services . . . . . . 506
Destination . . . . . . . . . . . . . . . . . . . 176
Symbols . . . . . . . . . . . . . . . . . . . . . . . 175
Using the System . . . . . . . . . . 170
New Vehicle Break-In . . . . . . 259
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . .112 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . 237
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 378
Engine Oil Life System . . . . 381
Pressure Light . . . . . . . . . . . . . . 127
Older Children, Restraints . . . . . . . . . . . . . . . . . . . . . . 72
Online Account . . . . . . . . . . . . . . . 486
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . 498
Additional Information . . . . 501
Overview . . . . . . . . . . . . . . . . . . . . . 499
OnStar Emergency . . . . . . . . . 500
OnStar Security . . . . . . . . . . . . . . 501
Outlets
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Overheating, Engine . . . . . . . . . 391 Overview . . . . . . . . . . . . . . . . . . . . . . . . 155
Instrument Panel . . . . . . . . . . . . . . 5
P
Park
Assist . . . . . . . . . . . . . . . . . . 335, 338
Shifting Into . . . . . . . . . . . 267, 268
Shifting Out of . . . . . . 269, 270
Parking . . . . . . . . . . . . . . . . . . . . . . . . . 270 Brake and P (Park)Mechanism Check . . . . . . . 400
Extended . . . . . . . . . . . . . . . . . . . . . 271
Over Things That Burn . . . 271
Parking or Backing Assistance Systems . . . . . . 335
Passenger Airbag Status Indicator . . . . 117
Compartment Air
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Sensing System . . . . . . . . . . . . . . 66
Pedestrian Ahead
Indicator . . . . . . . . . . . . . . . . . . . . . . . 123
Perchlorate Materials Requirements,
California . . . . . . . . . . . . . . . . . . . . . 370
Performance
Data Recorder (PDR) . . . . . . 192
Shifting Light . . . . . . . . . . . . . . . . 122

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
520 INDEX
ShiftingInto Park . . . . . . . . . . . . . . . 267, 268
Out of Park . . . . . . . . . . . 269, 270
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . . . . . 349
Signals, Turn and Lane-Change . . . . . . . . . . . . . . . . 149
Software Updates . . . . . . . . . . . 162
Special Application Services . . . . . . . . . . . . . . . . . . . . . . 473
Specifications and
Capacities . . . . . . . . . . . . . . . . . . . . 480
Speedometer . . . . . . . . . . . . . . . . . . .112
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . 124
Start Assist, Hill . . . . . . . . . . . . . . 289
Start Vehicle, Remote . . . . . . . . 16
Starting the Engine . . . . . . . . . 263
Steering . . . . . . . . . . . . . . . . . . . . . . . . 236
Heated Wheel . . . . . . . . . . . . . . . . 98
Wheel Adjustment . . . . . . . . . . 98
Wheel Controls . . . . . . . . . . . . . 158
Stop/Start System . . . . . . . . . . 264
Storage Center Console . . . . . . . . . . . . . . 95
Compartments . . . . . . . . . . . . . . . 94
Cupholders . . . . . . . . . . . . . . . . . . . . 94
Glove Box . . . . . . . . . . . . . . . . . . . . . . 94 Storage (cont'd)
Umbrella . . . . . . . . . . . . . . . . . . . . . . . 95
Storage Areas Cargo ManagementSystem . . . . . . . . . . . . . . . . . . . . . . . . 96
Storing the Tire Sealant and
Compressor Kit . . . . . . . . . . . . . 446
Struts Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402
Stuck Vehicle . . . . . . . . . . . . . . . . . 255
Summer Tires . . . . . . . . . . . . . . . . . 416
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . 33
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Super Cruise . . . . . . . . . . . . . . . . . . . 316
Surround Vision System . . . . . . . . . . . . . . . . . . . . . . . . 336
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Navigation . . . . . . . . . . . . . . . . . . . . 175
System Airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Brake Pad Life . . . . . . . . . . . . . 396
Driver Assistance . . . . . . . . . 333
Engine Air Filter Life . . . . . . 383
Forward CollisionAlert (FCA) . . . . . . . . . . . . . . . . . 342
Global Positioning . . . . . . . . . . 183
Infotainment . . . . . . . . . . . . . . . . 498 System (cont'd)
Rear Cross Traffic
Alert . . . . . . . . . . . . . . . . . . . . . . . . . . 341
Surround Vision . . . . . . . . . . . . 336
T
Tachometer . . . . . . . . . . . . . . . . . . . . .113
Teen Driver . . . . . . . . . . . . . . . . . . . . . .211
Text Telephone (TTY) Users . . . . . . . . . . . . . . . . . . . . . . . . . . 486
Theft-Deterrent Systems . . . . . . . . . . . . . . . . . . . . . . . . 27
Immobilizer . . . . . . . . . . . . . . . . . . . . 27
Thigh Support Adjustment . . . . . . . . . . . . . . . . . . . . 39
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 413 All-Season . . . . . . . . . . . . . . . . . . . . 414
Buying New Tires . . . . . . . . . . 432
Chains . . . . . . . . . . . . . . . . . . . . . . . . 437
Designations . . . . . . . . . . . . . . . . . 418
Different Size . . . . . . . . . . . . . . . 433
If a Tire Goes Flat . . . . . . . . . 437
Inspection . . . . . . . . . . . . . . . . . . . 429
Low-Profile . . . . . . . . . . . . . . . . . . . 416
Pressure . . . . . . . . . . . . . . . 422, 423
Pressure Light . . . . . . . . . . . . . . 126