2023 CADILLAC CT4 brake fluid

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
474 Service and Maintenance
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
Fluids and lubricants identified below by name or specification, including fluids or lubricants not
listed here, can be obtained from your dealer.Usage Fluid/Lubricant
Automatic Transmission (8-SpeedTransmission) DEXRON-HP Automatic Transmission Fluid.
Automatic Transmission (10-Speed Transmission) DEXRON ULV Automatic Transmission Fluid.
Chassis Lubrication Chassis lubricant meeting requirements of NLGI #2, Category LB or GC-LB. Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant. See Cooling System0386.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade.
ACDelco dexos1 full synthetic is recommended. See Engine Oil 0378.
Hood Latch Assembly, Secondary Latch, Pivots, Spring Anchor, and Release Pawl Lubriplate Lubricant Aerosol or lubricant meeting requirements of NLGI #2,
Category LB or GC-LB.
Hydraulic Brake System DOT 4 Hydraulic Brake Fluid.
Key Lock Cylinders, Hood and Door Hinges Multi-Purpose Lubricant, Superlube. See your dealer.
Manual Transmission DEXRON III Automatic Transmission Fluid.
Rear Axle/Front Axle (All-Wheel Drive) See your dealer.
Windshield Washer Automotive windshield washer fluid that meets regional freeze protection
requirements.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
510 INDEX
AlertLane Change . . . . . . . . . . . . . . . 349
Rear Cross Traffic . . . . . . . . . 341
Side Blind
Zone (SBZA) . . . . . . . . . . . . . . . 349
All-Season Tires . . . . . . . . . . . . . . 414
All-Wheel Drive . . . . . . . . 286, 400
AM-FM Radio . . . . . . . . . . . . . . . . . . 162
Antenna Multi-band . . . . . . . . . . . . . . . . . . . . 166
Antilock Brake
System (ABS) . . . . . . . . . . . . . . . 286
Warning Light . . . . . . . . . . . . . . . . 121
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 455
Interior . . . . . . . . . . . . . . . . . . . . . . . . . 461
Apple CarPlay and Android Auto . . . . . . . . . . . . . . . . 204
Assistance Program, Roadside . . . . . . . . . . . . . . . . . . . . . 487
Assistance Systems
Driving . . . . . . . . . . . . . . . . . . . . . . . . 342
Parking and Backing . . . . . . 335
Audio Bluetooth . . . . . . . . . . . . . . . . . . . . . 169
Automatic Dimming Mirrors . . . . . . . . . . . . . 30
Door Locks . . . . . . . . . . . . . . . . . . . . . 21 Automatic (cont'd)
Emergency
Braking (AEB) . . . . . . . . . . . . . 345
Emergency Braking (AEB) Disabled Light . . . . . 123
Headlamp System . . . . . . . . . . 148
Transmission . . . . . . . . . 272, 275
Transmission Fluid . . . . . . . . 382
Vehicle Hold Light . . . . . . . . . . 122
Automatic Transmission Manual Mode . . . . . . . . . 280, 281
Automatic Vehicle
Hold (AVH) . . . . . . . . . . . . . . . . . . . 289
Avoiding Untrusted Media Devices . . . . . . . . . . . . . . . 166
B
BatteryExterior LightingBattery Saver . . . . . . . . . . . . . . 153
Load Management . . . . . . . . . 152
Power Protection . . . . . . . . . . 153
Battery - North America . . . . . . . . . . . . . . . . .399, 447
Blade Replacement, Wiper . . . . . . . . . . . . . . . . . . . . . . . . . . . 401
Bluetooth Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . 169 Bluetooth (cont'd)
Overview . . . . . . . . . . . . . . . . 198, 199
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . 398
Pad Life System . . . . . . . . . . . 396
System Warning Light . . . . 120
Brake Pad Life System . . . . 396
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 393
Antilock . . . . . . . . . . . . . . . . . . . . . . . 286
Brake Assist . . . . . . . . . . . . . . . . 289
Electric Brake Boost . . . . . 286
Electric Parking Brake . . . . 287
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 235 AutomaticEmergency (AEB) . . . . . . . . 345
Reverse Automatic . . . . . . . 340
Braking System FrontPedestrian (FPB) . . . . . . . . . 346
Break-In, New Vehicle . . . . . . 259
Buckle To Drive . . . . . . . . . . . . . . . . 50
Bulb Replacement . . . . . . . . . . . 403 Front Turn SignalLamps . . . . . . . . . . . . . . . . . . . . . . . 404
Halogen Bulbs . . . . . . . . . . . . . . 403
Headlamp Aiming . . . . . . . . . . 403

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
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
522 INDEX
V
VehicleAhead Indicator . . . . . . . . . . . . . 123
Alarm System . . . . . . . . . . . . . . . . . 24
Automatic Hold . . . . . . . . . . . . 289
Automatic Hold Light . . . . . 122
Canadian Owners . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . 235
Data Recording andPrivacy . . . . . . . . . . . . . . . . . . . . . . 496
Identification Number (VIN) . . . . . . . . . . . . . . 478
Load Limits . . . . . . . . . . . . . . . . . . 255
Messages . . . . . . . . . . . . . . . . . . . . . 140
Positioning . . . . . . . . . . . . . . . . . . . 183
Remote Start . . . . . . . . . . . . . . . . . . 16
Security . . . . . . . . . . . . . . . . . . . . . . . . 24
Speed Messages . . . . . . . . . . . 141
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Vehicle Care Storing the TireSealant and
Compressor Kit . . . . . . . . . . . 446
Tire Pressure . . . . . . . . . . . . . . . 422
Ventilation, Air . . . . . . . . . . . . . . . . 230
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Voice Recognition . . . . . . . . . . . . 185
W
Warning Brake System Light . . . . . . . . 120
Caution and Danger . . . . . . . . . . 3
Hazard Flashers . . . . . . . . . . . . 149
Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . 105
Washer Fluid . . . . . . . . . . . . . . . . . . 393
Wheels Alignment and Tire
Balance . . . . . . . . . . . . . . . . . . . . . 435
Different Size . . . . . . . . . . . . . . . 433
Replacement . . . . . . . . . . . . . . . . 436
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 431
Where to Put the Restraint . . . . . . . . . . . . . . . . . . . . . . . 79
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Windshield Replacement . . . . . . . . . . . . . . . . . 401
Wiper/Washer . . . . . . . . . . . . . . . . 99
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . 253
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414
Wiper Blade Replacement . . . . . . . . 401
Wireless Charging . . . . . . . . . . . 102