service indicator CADILLAC CT4 2022 Owner's Manual

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
342 VEHICLE CARE
Caution
If the pressure cap is not tightly
installed, coolant loss and engine
damage may occur. Be sure the cap
is properly and tightly secured.
2.7L L4 Engine
Automatic Coolant Service Fill
Instructions
The vehicle is equipped with a service
feature that assists with filling and
removing air from the cooling system
after service of components or when
coolant is added after being to low.
To use this feature:1. With a cold system unscrew the cooling system air bleeder cap.
If coolant can be seen through the
bleeder move to Step 3.
2. Add coolant through the surge tank until it is visible through the air
bleeder.
3. Replace the cooling system air bleeder cap.
4. Add coolant to the indicated line on the surge tank. 5. Replace the pressure cap on the
surge tank.
6. Activate the service feature: 6.1. Connect the vehicle to a battery charger.
6.2. Turn the ignition to Service Mode. See Ignition Positions
0 232.
6.3. Turn off the air conditioning.
6.4. Set the parking brake.
6.5. At the same time, press the accelerator and the brake
pedal for two seconds, then
release.
6.6. At the end of the cycle, check the coolant level in the surge
tank and add coolant if it is
below the indicated line. Turn
the ignition off, carefully
remove the pressure cap, refill
to the indicated line, replace
the pressure cap, and repeat
steps 6.2 –6.6.
Listen for pump activation and
movement of the control valves while
watching the level of the coolant in
the surge tank. If the tank empties,
turn the ignition off, carefully remove the pressure cap, refill to the indicated
line, replace the pressure cap, and
repeat steps 6.2
–6.6.
The fill and air removal process will
run for approximately 15 minutes.
Caution
If the pressure cap is not tightly
installed, coolant loss and engine
damage may occur. Be sure the cap
is properly and tightly secured.
Engine Overheating
The vehicle has an indicator to warn
of the engine overheating.
If the decision is made not to lift the
hood when this warning appears, get
service help right away. See Roadside
Service 0432.
If the decision is made to lift the
hood, make sure the vehicle is parked
on a level surface.
Then check to see if the engine
cooling fan is running. If the engine is
overheating, the fan should be

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
344 VEHICLE CARE
Open the cap with the washer symbol
on it. Add washer fluid until the tank
is full. SeeEngine Compartment
Overview 0326 for reservoir location.
Caution
.Do not use washer fluid that
contains any type of water
repellent coating. This can cause
the wiper blades to chatter
or skip.
.Do not use engine coolant
(antifreeze) in the windshield
washer. It can damage the
windshield washer system and
paint.
.Do not mix water with
ready-to-use washer fluid. Water
can cause the solution to freeze
and damage the washer fluid
tank and other parts of the
washer system.
.When using concentrated washer
fluid, follow the manufacturer
instructions for adding water.
.Fill the washer fluid tank only
three-quarters full when it is very
cold. This allows for fluid
(Continued)
Caution (Continued)
expansion if freezing occurs,
which could damage the tank if
it is completely full.
Brakes
Disc brake linings, except J57 V-Series
Blackwing with carbon ceramic brakes,
have built-in wear indicators that
make a high-pitched warning sound
when the brake linings are worn and
new linings are needed. The sound
can come and go or can be heard all
the time when the vehicle is moving,
except when applying the brake pedal
firmly. The V-Series Blackwing has
electronic pad wear sensors. See Brake
Pad Life System (If Equipped) 0346
{Warning
The brake wear warning sound
means that soon the brakes will not
work well. That could lead to a
crash. When the brake wear
warning sound is heard, have the
vehicle serviced.
Caution
Continuing to drive with worn-out
brake linings could result in costly
brake repairs.
Properly torqued wheel nuts are
necessary to help prevent brake
pulsation. When tires are rotated,
inspect brake linings for wear and
evenly tighten wheel nuts in the
proper sequence to torque
specifications. See Capacities and
Specifications 0424.
Brake linings should be replaced as
complete axle sets.
Brake Squeal and Brake Dust
Some driving conditions or climates
can cause a brake squeal when the
brakes are first applied, clearing up
following several applies. This does
not mean something is wrong with
the brakes.
Vehicles equipped with high
performance brake systems provide
superior fade resistance, but will
produce increased brake squeal and

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
416 SERVICE AND MAINTENANCE
Shocks and Struts
Shocks and struts help aid in control
for a smoother ride.
.Signs of wear may include steering
wheel vibration, bounce/sway while
braking, longer stopping distance,
or uneven tire wear.
.As part of the multi-point
inspection, trained dealer
technicians can visually inspect the
shocks and struts for signs of
leaking, blown seals, or damage, and
can advise when service is needed.
Tires
Tires need to be properly inflated,
rotated, and balanced. Maintaining
the tires can save money and fuel, and
can reduce the risk of tire failure.
.Signs that the tires need to be
replaced include three or more
visible treadwear indicators; cord or
fabric showing through the rubber;
cracks or cuts in the tread or
sidewall; or a bulge or split in
the tire.
.Trained dealer technicians can
inspect and recommend the right
tires. Your dealer can also provide
tire/wheel balancing services to
ensure smooth vehicle operation at
all speeds. Your dealer sells and
services name brand tires.
Vehicle Care
To help keep the vehicle looking like
new, vehicle care products are
available from your dealer. For
information on how to clean and
protect the vehicle’s interior and
exterior, see Interior Care 0402 and
Exterior Care 0397.
Wheel Alignment
Wheel alignment is critical for
ensuring that the tires deliver optimal
wear and performance.
.Signs that the alignment may need
to be adjusted include pulling,
improper vehicle handling,
or unusual tire wear.
.Your dealer has the required
equipment to ensure proper wheel
alignment. Windshield
For safety, appearance, and the best
viewing, keep the windshield clean
and clear.
.Signs of damage include scratches,
cracks, and chips.
.Trained dealer technicians can
inspect the windshield and
recommend proper replacement if
needed.
Wiper Blades
Wiper blades need to be cleaned and
kept in good condition to provide a
clear view.
.Signs of wear include streaking,
skipping across the windshield, and
worn or split rubber.
.Trained dealer technicians can
check the wiper blades and replace
them when needed.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
INDEX 453
Caution, Danger, and Warning . . . . . . . . 2
Center Console Storage . . . . . . . . . . . . . . 80
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . 383
ChargingWireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Charging System Light . . . . . . . . . . . . . . 99
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . . 99
Child Restraints Infants and Young Children . . . . . . . 61
Lower Anchors and Tethers
for Children . . . . . . . . . . . . . . . . . . . . . . . 66
Older Children . . . . . . . . . . . . . . . . . . . . . 60
Securing . . . . . . . . . . . . . . . . . . . . . . . . 73, 75
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . 355
Cleaning Exterior Care . . . . . . . . . . . . . . . . . . . . . . 397
Interior Care . . . . . . . . . . . . . . . . . . . . . . 402
Climate Control Systems
Dual Automatic . . . . . . . . . . . . . . . . . . . 202
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Cluster, Instrument . . . . . . . . . . . . . . 89, 91
Clutch, Hydraulic . . . . . . . . . . . . . . . . . . . 335
Collision Damage Repair . . . . . . . . . . . 435
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Competitive Driving Mode . . . . . . . . . 264
Composite Materials . . . . . . . . . . . . . . . . 232
Compressor Kit, Tire Sealant . . . . . . . 384
Connected Services
Connections . . . . . . . . . . . . . . . . . . . . . . . 449
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . 450
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . 448
Connections Connected Services . . . . . . . . . . . . . . . 449
Control
Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . . . . . . 257
Control of a Vehicle . . . . . . . . . . . . . . . . 211
Controls Steering Wheel . . . . . . . . . . . . . . . . . . . . 139
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . 23
Coolant Engine Temperature Gauge . . . 96, 97
Engine Temperature WarningLight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Cooling System . . . . . . . . . . . . . . . . . . . . . 338
Cornering Lamps . . . . . . . . . . . . . . . . . . . 132
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . 132
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 434
Coverage Explanations . . . . . . . . . . . . . 164 Cruise Control . . . . . . . . . . . . . . . . . . . . . . . 266
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Cruise Control, Adaptive . . . . . . . . . . . 269
Cruise Control, Super . . . . . . . . . . . . . . . 278
Cupholders . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Customer Assistance . . . . . . . . . . . . . . . 431 Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 430
Text Telephone (TTY) Users . . . . . 431
Customer Information Publications OrderingInformation . . . . . . . . . . . . . . . . . . . . . . 437
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 428
Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . 439
D
Damage Repair, Collision . . . . . . . . . . . 435
Danger, Warning, and Caution . . . . . . . . 2
Data Collection Infotainment System . . . . . . . . . . . . . 441
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 440
Data Recorder Performance . . . . . . . . . . . . . . . . . . . . . . . 170
Data Recorders, Event . . . . . . . . . . . . . . 440
Database Coverage Explanations . . . . . . . . . . . . . . . . . . . . . . 164
Daytime Running Lamps (DRL) . . . 130
Defensive Driving . . . . . . . . . . . . . . . . . . . 210

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
454 INDEX
Delayed Locking . . . . . . . . . . . . . . . . . . . . . 16
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . 156
DiagnosticsConnected Services . . . . . . . . . . . . . . . 450
Differential, Limited-Slip . . . . . . . . . . . 266
Distracted Driving . . . . . . . . . . . . . . . . . . 210
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . 132
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . . 109
Delayed Locking . . . . . . . . . . . . . . . . . . . 16
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . 16
Drive Belt Routing, Engine . . . . . . . . . 427
Drive Systems All-Wheel Drive . . . . . . . . . . . . . 253, 349
Driver
Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Driver Assistance Systems . . . . . . . . . 293
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . .109, 112
Driver Mode Control . . . . . . . . . . . . . . . . 258
Driver Mode Control Light . . . . . . . . . 106
Driving
Assistance Systems . . . . . . . . . . . . . . . 301
Better Fuel Economy . . . . . . . . . . . . . 209
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . . . . . 315
Competitive . . . . . . . . . . . . . . . . . . . . . . . 264 Driving (cont'd)
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Hill and Mountain Roads . . . . . . . . 225
If the Vehicle is Stuck . . . . . . . . . . . . 227
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Loss of Control . . . . . . . . . . . . . . . . . . . . 212
Off-Road Recovery . . . . . . . . . . . . . . . . 212
Track Events and
Competitive . . . . . . . . . . . . . . . . . . . . . . 213
Vehicle Load Limits . . . . . . . . . . . . . . 228
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . 224
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . . . . . 202
E
Electric Brake Boost . . . . . . . . . . . . . . . . 253
Electric Parking Brake . . . . . . . . . . . . . . 254
Electric Parking Brake Light . . . . . . . 102
Electrical Equipment, Add-On . . . . . 321
Electrical SystemEngine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Fuses and Circuit Breakers . . . . . . . 355
Instrument Panel Fuse Block . . . . 358
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361 Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 443
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . 336
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . . 99
Compartment Overview . . . . . . . . . . 326
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . 96, 97
Coolant Temperature Warning Light . . . . . . . . . . . . . . . . . . . 105
Cooling System . . . . . . . . . . . . . . . . . . . 338
Drive Belt Routing . . . . . . . . . . . . . . . . 427
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
Oil Life System . . . . . . . . . . . . . . . . . . . . 333
Oil Pressure Light . . . . . . . . . . . . . . . . . 107
Overheating . . . . . . . . . . . . . . . . . . . . . . . 342
Power Messages . . . . . . . . . . . . . . . . . . 119
Running While Parked . . . . . . . . . . . 241
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Engine Air Filter Life System . . . . . . 335
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . 133
Equipment, Towing . . . . . . . . . . . . . . . . . 320
Event Data Recorders . . . . . . . . . . . . . . 440
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . 134
Extended Parking . . . . . . . . . . . . . . . . . . . 240
Extender, Seat Belt . . . . . . . . . . . . . . . . . . 47

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
INDEX 455
Exterior Lamp Controls . . . . . . . . . . . . 128
Exterior Lamps Off Reminder . . . . . . 130
Exterior Lighting Battery Saver . . . . 135
F
Filter,Engine Air Cleaner . . . . . . . . . . . . . . . . 336
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . 130
Flashers, Hazard Warning . . . . . . . . . . 131
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 383
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 405
Fluid Automatic Transmission . . . . . . . . . 334
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . 23
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 438
Front Pedestrian Braking (FPB)
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Front Seats Heated and Ventilated . . . . . . . . . . . . 37
Front Turn Signal Lamps . . . . . . . . . . 353
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . 312
Economy, Driving for Better . . . . . 209 Fuel (cont'd)
Filling a Portable Fuel
Container . . . . . . . . . . . . . . . . . . . . . . . . 314
Filling the Tank . . . . . . . . . . . . . . . . . . . 312
Foreign Countries . . . . . . . . . . . . . . . . . 312
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Low Fuel Warning Light . . . . . . . . . 108
Prohibited Fuels . . . . . . . . . . . . . . . . . . 312
Recommended . . . . . . . . . . . . . . . . . . . . 311
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Fuses Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Fuses and Circuit Breakers . . . . . . . 355
Instrument Panel Fuse Block . . . . 358
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
G
Garage Door Opener . . . . . . . . . . . . . . . . 125Programming . . . . . . . . . . . . . . . . . . . . . . 125
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . 351
Gauges
Engine CoolantTemperature . . . . . . . . . . . . . . . . . . 96, 97
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Speedometer . . . . . . . . . . . . . . . . . . . . . . . 95 Gauges (cont'd)
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . 95
Trip Odometer . . . . . . . . . . . . . . . . . . . . . 95
Warning Lights and Indicators . . . 89
General Information Service and Maintenance . . . . . . . . 407
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . 323
Global Positioning System (GPS) . . . . . . . . . . . . . . . . . . . . . . 162
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 432
Guidance Problems with the Route . . . . . . . . . 163
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . 352
Hazard Warning Flashers . . . . . . . . . . 131
HD Radio Technology . . . . . . . . . . . . . . 145
Head Restraints . . . . . . . . . . . . . . . . . . . . . . 30
Head-up Display . . . . . . . . . . . . . . . . . . . . 115
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 130
Bulb Replacement . . . . . . . . . . . . . . . . 352
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . . . . . 130

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
456 INDEX
Headlamps (cont'd)Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . 130
High Intensity Discharge
(HID) Lighting . . . . . . . . . . . . . . . . . . . 352
High-Beam On Light . . . . . . . . . . . . . . 108
High/Low Beam Changer . . . . . . . . . 130
Lamps On Reminder . . . . . . . . . . . . . . 108
Heated Steering Wheel . . . . . . . . . . . . . . . . . . . . . 83
Heated and Ventilated Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . 25
Heater
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
High-Beam On Light . . . . . . . . . . . . . . . . 108
High-Speed Operation . . . . . . . . . . . . . . 371
Hill and Mountain Roads . . . . . . . . . . 225
Hill Start Assist (HSA) . . . . . . . . . . . . . 256
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
How to Wear Seat Belts Properly . . . 42
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Hydraulic Clutch . . . . . . . . . . . . . . . . . . . . 335I
If the System Needs Service . . . . . . . 164
Ignition Positions . . . . . . . . . . . . . . . . . . . 232
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Indicator Pedestrian Ahead . . . . . . . . . . . . . . . . . 104
Vehicle Ahead . . . . . . . . . . . . . . . . . . . . . 104
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Information
Publication Ordering . . . . . . . . . . . . . 437
Infotainment System . . . . . . . . . . . . . . . 441
Instrument Cluster . . . . . . . . . . . . . . 89, 91
Instrument Panel Overview . . . . . . . . . . . 4
Interior Rearview Mirrors . . . . . . . . . . . 25
Introduction . . . . . . . . . . . . . . . . . . . . . . 1, 136
J
Jump Starting - North America . . . . 390
K
Keyless Entry Remote (RKE) System . . . . . . . . . . . . . . . 7
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
L
Labeling, Tire Sidewall . . . . . . . . . . . . . 366
Lamps Cornering . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Courtesy . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Daytime Running (DRL) . . . . . . . . . . 130
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Exterior Controls . . . . . . . . . . . . . . . . . . 128
Exterior Lamps Off Reminder . . . . 130
Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Front Turn Signal . . . . . . . . . . . . . . . . . 353
Malfunction Indicator (Check Engine) . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
On Reminder . . . . . . . . . . . . . . . . . . . . . . 108
Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Lane Change Alert (LCA) . . . . . . . . . . . 307
Lane Keep Assist (LKA) . . . . . . . . . . . . 309
Lane Keep Assist Light . . . . . . . . . . . . . 103
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . 44
LATCH System Replacing Parts after a Crash . . . . . 73
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . . . . . 66
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . 353

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
INDEX 457
LightPerformance Shifting . . . . . . . . . . . . . 103
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Illumination Control . . . . . . . . . . . . . . 132
LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
Lights Airbag Readiness . . . . . . . . . . . . . . . . . . 98
Antilock Brake System (ABS)Warning . . . . . . . . . . . . . . . . . . . . . . . . . 102
Automatic Vehicle Hold . . . . . . . . . . 103
Brake System Warning . . . . . . . . . . . 101
Charging System . . . . . . . . . . . . . . . . . . . 99
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . . . . . . 99
Cruise Control . . . . . . . . . . . . . . . . . . . . . 109
Door Ajar . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Driver Mode Control . . . . . . . . . . . . . . 106
Electric Parking Brake . . . . . . . . . . . . 102
Engine Coolant Temperature Warning . . . . . . . . . . . . . . . . . . . . . . . . . 105
Engine Oil Pressure . . . . . . . . . . . . . . . 107
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . 130
High-Beam On . . . . . . . . . . . . . . . . . . . . 108
High/Low Beam Changer . . . . . . . . . 130
Lane Keep Assist . . . . . . . . . . . . . . . . . . 103
Low Fuel Warning . . . . . . . . . . . . . . . . 108 Lights (cont'd)
Seat Belt Reminders . . . . . . . . . . . . . . . 97
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Service Electric Parking
Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
StabiliTrak OFF . . . . . . . . . . . . . . . . . . . 105
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 107
Traction Control System (TCS)/StabiliTrak . . . . . . . . . . . . . . . . 105
Traction Off . . . . . . . . . . . . . . . . . . . . . . . 104
Limited-Slip Differential . . . . . . . . . . . . 266
Locks Automatic Door . . . . . . . . . . . . . . . . . . . . 17
Delayed Locking . . . . . . . . . . . . . . . . . . . 16
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Lockout Protection . . . . . . . . . . . . . . . . 17
Power Door . . . . . . . . . . . . . . . . . . . . . . . . . 16
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Loss of Control . . . . . . . . . . . . . . . . . . . . . . 212
Low Fuel Warning Light . . . . . . . . . . . 108
Low-Profile Tires . . . . . . . . . . . . . . . . . . . . 365
Lower Anchors and Tethers for Children (LATCH System) . . . . . . . . . 66
Lumbar Adjustment . . . . . . . . . . . . . . . . . 33 Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . 33M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . . . . . . . 421
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . . . . . 414
Maintenance Schedule . . . . . . . . . . . . . 408 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . . . . . 417
Malfunction Indicator Lamp . . . . . . . . 99
Manual Mode . . . . . . . . . . . . . . . . . .248, 249
Manual Transmission . . . . . . . . . . . . . . 250 Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Map Data Updates . . . . . . . . . . . . . . . . . . 164
Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Massage Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Matching Active Rev . . . . . . . . . . . . . . . . . . . . . . . . . 252
Media
Avoiding Untrusted Devices . . . . . 147
Memory Seats . . . . . . . . . . . . . . . . . . . . . . . . 34
Messages Engine Power . . . . . . . . . . . . . . . . . . . . . 119
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Vehicle Speed . . . . . . . . . . . . . . . . . . . . . 120
Mirrors Automatic Dimming . . . . . . . . . . . . . . . 25
Automatic Dimming Rearview . . . . 25

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
458 INDEX
Mirrors (cont'd)Convex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Manual Rearview . . . . . . . . . . . . . . . . . . 25
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Tilt in Reverse . . . . . . . . . . . . . . . . . . . . . 25
Mirrors, Interior Rearview . . . . . . . . . . . 25
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258 Driver Control . . . . . . . . . . . . . . . . . . . . . 258
Monitor System, Tire Pressure . . . . . 372
Multi-band Antenna . . . . . . . . . . . . . . . . 147
N
Navigation Connected Services . . . . . . . . . . . . . . . 448
Destination . . . . . . . . . . . . . . . . . . . . . . . . 156
Using the System . . . . . . . . . . . . . . . . . 151
Navigation Symbols . . . . . . . . . . . . . . . . 155
New Vehicle Break-In . . . . . . . . . . . . . . . 231
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Oil
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Engine Oil Life System . . . . . . . . . . . 333 Oil (cont'd)
Pressure Light . . . . . . . . . . . . . . . . . . . . . 107
Older Children, Restraints . . . . . . . . . . . 60
Online Owner Center . . . . . . . . . . . . . . . 431
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 440
OnStar Additional Information . . . . 444
OnStar Emergency . . . . . . . . . . . . . . . . . . 443
OnStar Overview . . . . . . . . . . . . . . . . . . . . 442
OnStar Security . . . . . . . . . . . . . . . . . . . . . 443
OnStar System . . . . . . . . . . . . . . . . . . . . . . 161
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Overheating, Engine . . . . . . . . . . . . . . . . 342
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137 Instrument Panel . . . . . . . . . . . . . . . . . . . . 4
P
ParkShifting Into . . . . . . . . . . . . . . . . 238, 239
Shifting Out of . . . . . . . . . . . . . . 239, 240
Park Assist . . . . . . . . . . . . . . . . . . . . .295, 297
Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240 Brake and P (Park)Mechanism Check . . . . . . . . . . . . . . . 350
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Over Things That Burn . . . . . . . . . . . 240
Parking or Backing Assistance Systems . . . . . . . . . . . . . . . 295 Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Passenger Sensing System . . . . . . . . . . 54
Pedestrian Ahead Indicator . . . . . . . . 104
Perchlorate Materials Requirements, California . . . . . . . . . 323
Performance Data Recorder (PDR) . . . . . . . . . . . . . . . . . . . . 170
Performance Shifting Light . . . . . . . . 103
Personalization
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Phone Apple CarPlay andAndroid Auto . . . . . . . . . . . . . . . . . . . . 180
Bluetooth . . . . . . . . . . . . . . . . . . . . 175, 176
Port USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Positioning Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . 16
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Protection, Battery . . . . . . . . . . . . . . . . 135
Retained Accessory (RAP) . . . . . . . . 237
Seat Adjustment . . . . . . . . . . . . . . . . . . . 31