2023 CADILLAC CT4 air filter

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
472 Service and Maintenance
pressure water can
overcome the seals and
contaminate the transfer
case fluid. Contaminated
fluid will decrease the life of
the transfer case and/or
axles and should be
replaced.
.Change front axle fluid,
if equipped with AWD. Do
not directly power wash the
transfer case and/or front/
rear axle output seals. High
pressure water can
overcome the seals and
contaminate the transfer
case fluid. Contaminated
fluid will decrease the life of
the transfer case and/or
axles and should be
replaced.
Every 120 000 km
(75,000 mi)
.Change rear axle fluid,
without limited slip
differential. Do not directly
power wash the transfer
case and/or front/rear axle
output seals. High pressure water can overcome the
seals and contaminate the
transfer case fluid.
Contaminated fluid will
decrease the life of the
transfer case and/or axles
and should be replaced.
Owner Checks and
Services
Every Five Years
.Replace brake fluid every
five years. See Brake Fluid
0
398.
Every Seven Years
.Replace Air Conditioning
Desiccant every seven years.
The air conditioning system
requires maintenance every
seven years. This service
requires replacement of the
desiccant to help the
longevity and efficient
operation of the air
conditioning system. This
service can be complex. See
your dealer.
Multi-Point Vehicle
Inspection (MPVI)
A Multi Point Vehicle
Inspection (MPVI) completed
by a GM dealer technician is a
maintenance assessment of
your vehicle. The benefit of
the MPVI is to identify and
inform the customer of service
items that require immediate
attention and those that may
require attention in the future.
The technician will perform the
following checks on your
vehicle. For a complete list of
checks, inspections, and
services, see your dealer.
Some items may not apply to
your vehicle and/or region.
Diagnostics
.OnStar active, if equipped
.Service history/recall check
Engine Oil and Filter
.Engine oil
.Oil life monitor
‐ Reset oil life monitor

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Service and Maintenance 473
Exterior Lights
.Visual inspection
Windshield and Wipers
.Visual inspection
Battery
.Battery visual inspection
.Battery test results
.Battery cables and
connections
Systems, Fluids, and
Visible Leak Inspection
.Engine oil
.Transmission
.Drive axle
.Transfer case
.Engine cooling system
.Power steering, if equipped
.Fuel system
.Windshield washer fluid
Tire Inspection
.Tire pressure, tread depth,
and wear
.Rotation, if applicable
.Alignment check, optional
.Reset tire pressure monitor
.Check tire sealant expiration
date, if equipped
.Check spare tire, if equipped
Brakes
.Check brake system
Visible and Functional
Inspections
.Seat belt components
.Exhaust system
.Accelerator pedal
.Passenger compartment air
filter, if equipped
.Engine air filter
.Hoses
.Belts
.Shocks and struts
.Steering components
.Axle boots or driveshaft and
u-joints
.Compartment lift struts,
if equipped
.Floor mats secured, no
interference with pedals
.Horn
.Ignition lock, if equipped
.Starter switch
.Evaporative control system
Lubricate
.Chassis components
Special Application
Services
.Severe Commercial Use
Vehicles Only: Lubricate
chassis components every
oil change.
.Have underbody flushing
service performed. See
"Underbody Maintenance" in
Exterior Care 0455.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Service and Maintenance 475
Maintenance Replacement Parts
Replacement parts identified below by name, part number, or specification can be obtained from
your dealer.Part GM Part NumberACDelco
Part Number
Engine Air Cleaner/Filter
I2.0L L4 Engine 84498926 A3245C
I2.7L L4 Engine 84498926 A3245C
I3.6L V6 Engine (Driver Side) 84335354 A3235C
I3.6L V6 Engine (Passenger Side) 84335354 A3235C
Engine Oil Filter I2.0L L4 engine 55495105 PF66
I2.7L L4 engine 55495105 PF66
I3.6L V6 Engine 12707246 PF63
Passenger Compartment Air Filter IStandard Filter 84987523 CF185
IFine Dust Particulate 23195727 CF206
Spark Plugs I2.0L L4 engine 55504354 41–103–IP
I2.7L L4 engine 12688094 41–106–IP
I3.6L V6 Engine 12662396 41–147

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
480 Technical Data
Vehicle Data
Capacities and Specifications
ApplicationCapacities
Metric English
Air Conditioning Refrigerant For the air conditioning system refrigerant type and
charge amount, see the refrigerant label under the hood. See your dealer for more information.
Engine Cooling System*
I2.0L L4 Engine 10.4 L
11.0 qt
I2.7L L4 Engine 13.0 L
13.7 qt
I3.6L V6 Engine 13.6 L
14.4 qt
I3.6L V6 Engine Intercoolers (V-Series Blackwing) 2.7 L
2.9 qt
Engine Oil with Filter I2.0L L4 Engine 5.0 L
5.3 qt
I2.7L L4 Engine 5.7 L
6.0 qt
I3.6L V6 Engine 6.6 L
7.0 qt
Fuel Tank 66.0 L17.5 gal
Transfer Case –AWD 0.78 L0.8 qt
Front Axle –AWD 0.4 L0.42 qt

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
INDEX 509
IndexA
Accessories andModifications . . . . . . . . . . . . . . . . 370
Accessory Power . . . . . . . . . . . .267
Active Rev Match . . . . . . . . . . . . . . . . . . . 285
Adaptive Cruise Control . . . . . . . . . . . . . . 304
Add-On Electrical Equipment . . . . . . . . . . . . . . . . . . . 366
Additional OnStar Information . . . . . . . . 501
Adjustments Lumbar, Front Seats . . . . . . . 40
Thigh Support . . . . . . . . . . . . . . . . 39
Agreements Trademarks andLicense . . . . . . . . . . . . . . . . . . . . . . 215
Air
Cleaner/Filter, Engine . . . . 384
Conditioning . . . . . . . . . . . . . . . . 225
Filter Life System . . . . . . . . . 383
Filter, PassengerCompartment . . . . . . . . . . . . . . 231
Vents . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Airbag System . . . . . . . . . . . . . . . . . 59 Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Airbag System (cont'd)
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . . . 64
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . . . . 66
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 63
What Will You See after an Airbag
Inflates? . . . . . . . . . . . . . . . . . . . . . . 64
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 62
Where Are the Airbags? . . . . . . . . . . . . . . . . . . . . . . . 61
Airbags Adding Equipment to
the Vehicle . . . . . . . . . . . . . . . . . . . 70
Passenger Status Indicator . . . . . . . . . . . . . . . . . . . . . . 117
Readiness Light . . . . . . . . . . . . . 116
Replacing System Parts after a Crash . . . . . . . 72
Servicing Airbag-Equipped
Vehicles . . . . . . . . . . . . . . . . . . . . . . 70
Alarm
Vehicle Security . . . . . . . . . . . . . 24

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
INDEX 513
Driving (cont'd)Loss of Control . . . . . . . . . . . . . 237
Off-Road Recovery . . . . . . . . 237
Track Events and
Competitive . . . . . . . . . . . . . . . 238
Vehicle Load Limits . . . . . . . 255
Wet Roads . . . . . . . . . . . . . . . . . . . 251
Winter . . . . . . . . . . . . . . . . . . . . . . . . 253
Dual Automatic ClimateControl System . . . . . . . . . . . 225
E
ElectricBrake Boost . . . . . . . . . . . . . . . . . 286
Parking Brake . . . . . . . . . . . . . . . 287
Parking Brake Light . . . . . . . . 121
Electrical Equipment, Add-On . . . . . . . 366
System Overload . . . . . . . . . . 404
Electrical System Engine Compartment
Fuse Block . . . . . . . . . . . . . . . . . 407
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . . . 406
Instrument Panel
Fuse Block . . . . . . . . . . . . . . . . . 409 Electrical System (cont'd)
Rear Compartment
Fuse Block . . . . . . . . . . . . . . . . . . 411
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . 500
Engine Air Cleaner/Filter . . . . . . . . . . 384
Air Filter Life System . . . . . 383
Check Light
(Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 118
Compartment
Overview . . . . . . . . . . . . . . . . . . . 373
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . 114, 115
Coolant Temperature Warning Light . . . . . . . . . . . . . . 124
Cooling System . . . . . . . . . . . . 386
Drive Belt Routing . . . . . . . . . 482
Exhaust . . . . . . . . . . . . . . . . . . . . . . . 271
Heater . . . . . . . . . . . . . . . . . . . . . . . . 266
Oil Life System . . . . . . . . . . . . . . 381
Oil Pressure Light . . . . . . . . . . 127
Overheating . . . . . . . . . . . . . . . . . . 391
Power Messages . . . . . . . . . . . 141
Running While Parked . . . . 272
Starting . . . . . . . . . . . . . . . . . . . . . . 263 Entry Lighting . . . . . . . . . . . . . . . . . .151
Equipment, Towing . . . . . . . . . 365
Event Data Recorders . . . . . 497
Exit Lighting . . . . . . . . . . . . . . . . . . . .151
Extended Parking . . . . . . . . . . . . 271
Extender, Seat Belt . . . . . . . . . . . 57
Exterior
Lamp Controls . . . . . . . . . . . . . . 145
Lamps Off Reminder . . . . . . 147
Lighting Battery Saver . . . 153
F
FilterEngine Air Cleaner . . . . . . . . 384
Flash-to-Pass . . . . . . . . . . . . . . . . . . 147
Flashers, Hazard Warning . . . . . . . . . . . . . . . . . . . . . . . 149
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 437
Floor Mats . . . . . . . . . . . . . . . . . . . . . 465
Fluid Automatic
Transmission . . . . . . . . . . . . . . 382
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 398
Washer . . . . . . . . . . . . . . . . . . . . . . . 393
Folding Mirrors . . . . . . . . . . . . . . . . . 29
Forward Collision Alert (FCA)System . . . . . . . . . . . . . . . . . . . . . . 342

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