service indicator CADILLAC CT4 2021 Owner's Guide

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
322 VEHICLE CARE
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 0403.
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 running. If it is not, do not continue
to run the engine. Have the vehicle
serviced.
Caution
Do not run the engine if there is a
leak in the engine cooling system.
This can cause a loss of all coolant
and can damage the system and
vehicle. Have any leaks fixed
right away.
If Steam Is Coming from the
Engine Compartment
{Warning
Steam and scalding liquids from a
hot cooling system are under
pressure. Turning the pressure cap,
even a little, can cause them to
come out at high speed and you
could be burned. Never turn the cap
when the cooling system, including
the pressure cap, is hot. Wait for
the cooling system and pressure
cap to cool.
If No Steam Is Coming from the
Engine Compartment
If an engine overheat warning is
displayed but no steam can be seen or
heard, the problem may not be too
serious. Sometimes the engine can get
a little too hot when the vehicle:
.Climbs a long hill on a hot day.
.Stops after high-speed driving.
.Idles for long periods in traffic.
If the overheat warning is displayed
with no sign of steam: 1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and to the highest fan
speed. Open the windows as
necessary.
3. When it is safe to do so, pull off the road, shift to P (Park) or
N (Neutral) and let the engine idle.
If the overheat warning no longer
displays, the vehicle can be driven.
Continue to drive the vehicle slowly
for about 10 minutes. Keep a safe
vehicle distance from the vehicle in
front. If the warning does not come

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
VEHICLE CARE 323
back on, continue to drive normally
and have the cooling system checked
for proper fill and function.
If the warning continues, pull over,
stop, and park the vehicle right away.
If there is no sign of steam, idle the
engine for three minutes while parked.
If the warning is still displayed, turn
off the engine until it cools down.
Washer Fluid
What to Use
When windshield washer fluid is
needed, be sure to read the
manufacturer's instructions before
use. If operating the vehicle in an area
where the temperature may fall below
freezing, use a fluid that has sufficient
protection against freezing.
Adding Washer Fluid
Open the cap with the washer symbol
on it. Add washer fluid until the tank
is full. SeeEngine Compartment
Overview 0309 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.
(Continued)
Caution (Continued)
.Fill the washer fluid tank only
three-quarters full when it is very
cold. This allows for fluid
expansion if freezing occurs,
which could damage the tank if
it is completely full.
Brakes
Disc brake linings 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.
{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.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
390 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 0375 and
Exterior Care 0370.
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-14584335) -
2021 - CRC - 11/23/20
INDEX 423
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . 358
ChargingWireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Charging System Light . . . . . . . . . . . . . . 97
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . . 97
Child Restraints Infants and Young Children . . . . . . . 60
Lower Anchors and Tethersfor Children . . . . . . . . . . . . . . . . . . . . . . . 65
Older Children . . . . . . . . . . . . . . . . . . . . . 59
Securing . . . . . . . . . . . . . . . . . . . . . . . . 72, 74
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . 331
Cleaning Exterior Care . . . . . . . . . . . . . . . . . . . . . . 370
Interior Care . . . . . . . . . . . . . . . . . . . . . . 375
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . . . . . 196
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Cluster, Instrument . . . . . . . . . . . . . . 88, 90
Collision Damage Repair . . . . . . . . . . . 406
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Competitive Driving Mode . . . . . . . . . 246
Composite Materials . . . . . . . . . . . . . . . . 218 Compressor Kit, Tire Sealant . . . . . . . 360
Connected Services
Connections . . . . . . . . . . . . . . . . . . . . . . . 419
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . 420
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . 418
Connections Connected Services . . . . . . . . . . . . . . . 419
Control Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Control of a Vehicle . . . . . . . . . . . . . . . . 204
Controls
Steering Wheel . . . . . . . . . . . . . . . . . . . . 137
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . 23
Coolant Engine Temperature Gauge . . . 94, 95
Engine Temperature Warning
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Cooling System . . . . . . . . . . . . . . . . . . . . . 317
Cornering Lamps . . . . . . . . . . . . . . . . . . . 130
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . 130
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 405
Coverage Explanations . . . . . . . . . . . . . 163
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . 248
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Cruise Control, Adaptive . . . . . . . . . . . 251 Cruise Control, Super . . . . . . . . . . . . . . . 260
Cupholders . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Customer Assistance . . . . . . . . . . . . . . . 402
Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 401
Text Telephone (TTY) Users . . . . . 402
Customer Information Publications Ordering
Information . . . . . . . . . . . . . . . . . . . . . . 408
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 399
Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . 410
D
Damage Repair, Collision . . . . . . . . . . . 406
Danger, Warning, and Caution . . . . . . . . 2
Data Collection Infotainment System . . . . . . . . . . . . . 412
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 412
Data Recorders, Event . . . . . . . . . . . . . . 411
Database Coverage Explanations . . . . . . . . . . . . . . . . . . . . . . 163
Daytime Running Lamps (DRL) . . . 128
Defensive Driving . . . . . . . . . . . . . . . . . . . 204
Delayed Locking . . . . . . . . . . . . . . . . . . . . . 17
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Diagnostics Connected Services . . . . . . . . . . . . . . . 420
Differential, Limited-Slip . . . . . . . . . . . 248

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
INDEX 425
F
Filter,Engine Air Cleaner . . . . . . . . . . . . . . . . 316
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . 128
Flashers, Hazard Warning . . . . . . . . . . 129
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 377
Fluid Automatic Transmission . . . . . . . . . 315
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . 24
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 409
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
Front Seats
Heated and Ventilated . . . . . . . . . . . . 37
Front Turn Signal Lamps . . . . . . . . . . 330
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . 294
Economy, Driving for Better . . . . . 203
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . . . . . . 296
Filling the Tank . . . . . . . . . . . . . . . . . . . 295
Foreign Countries . . . . . . . . . . . . . . . . . 294 Fuel (cont'd)
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Low Fuel Warning Light . . . . . . . . . 105
Prohibited Fuels . . . . . . . . . . . . . . . . . . 294
Recommended . . . . . . . . . . . . . . 293, 294
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Fuses
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332
Fuses and Circuit Breakers . . . . . . . 331
Instrument Panel Fuse Block . . . . 334
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
G
Garage Door Opener . . . . . . . . . . . . . . . . 122Programming . . . . . . . . . . . . . . . . . . . . . . 122
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . 328
Gauges Engine CoolantTemperature . . . . . . . . . . . . . . . . . . 94, 95
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Speedometer . . . . . . . . . . . . . . . . . . . . . . . 93
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . 93
Trip Odometer . . . . . . . . . . . . . . . . . . . . . 93
Warning Lights and Indicators . . . 87 General Information
Service and Maintenance . . . . . . . . 379
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . 305
Global Positioning System (GPS) . . . . . . . . . . . . . . . . . . . . . . 161
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402
Guidance Problems with the Route . . . . . . . . . 162
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . 330
Hazard Warning Flashers . . . . . . . . . . 129
HD Radio Technology . . . . . . . . . . . . . . 143
Head Restraints . . . . . . . . . . . . . . . . . . . . . . 31
Head-up Display . . . . . . . . . . . . . . . . . . . . 112
Headlamps
Aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 128
Bulb Replacement . . . . . . . . . . . . . . . . 329
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . . . . . 128
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . 128
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . 330
High-Beam On Light . . . . . . . . . . . . . . 105

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
426 INDEX
Headlamps (cont'd)High/Low Beam Changer . . . . . . . . . 128
Lamps On Reminder . . . . . . . . . . . . . . 106
Heated Steering Wheel . . . . . . . . . . . . . . . . . . . . . 82
Heated and Ventilated Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . 25
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
High-Beam On Light . . . . . . . . . . . . . . . . 105
High-Speed Operation . . . . . . . . . . . . . . 347
Hill and Mountain Roads . . . . . . . . . . 212
Hill Start Assist (HSA) . . . . . . . . . . . . . 238
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
How to Wear Seat Belts Properly . . . 42
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
I
If the System Needs Service . . . . . . . 163
Ignition Positions . . . . . . . . . . . . . . . . . . . 219
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Indicator Pedestrian Ahead . . . . . . . . . . . . . . . . . 102
Vehicle Ahead . . . . . . . . . . . . . . . . . . . . . 102 Infants and Young Children,
Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Information Publication Ordering . . . . . . . . . . . . . 408
Infotainment System . . . . . . . . . . . . . . . 412
Instrument Cluster . . . . . . . . . . . . . . 88, 90
Instrument Panel Overview . . . . . . . . . . . 4
Interior Rearview Mirrors . . . . . . . . . . . 26
Introduction . . . . . . . . . . . . . . . . . . . . . . 1, 134
J
Jump Starting - North America . . . . 366
K
Keyless Entry Remote (RKE) System . . . . . . . . . . . . . . . 7
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
L
Labeling, Tire Sidewall . . . . . . . . . . . . . 342
Lamps
Cornering . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Courtesy . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Daytime Running (DRL) . . . . . . . . . . 128
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Exterior Controls . . . . . . . . . . . . . . . . . . 126
Exterior Lamps Off Reminder . . . . 128
Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 Lamps (cont'd)
Front Turn Signal . . . . . . . . . . . . . . . . . 330
Malfunction Indicator (Check
Engine) . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
On Reminder . . . . . . . . . . . . . . . . . . . . . . 106
Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Lane Change Alert (LCA) . . . . . . . . . . . 289
Lane Keep Assist (LKA) . . . . . . . . . . . . 291
Lane Keep Assist Light . . . . . . . . . . . . . 101
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . 44
LATCH System Replacing Parts after a Crash . . . . . 72
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . . . . . 65
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . 330
Light Performance Shifting . . . . . . . . . . . . . 101
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Illumination Control . . . . . . . . . . . . . . 130
LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
Lights Airbag Readiness . . . . . . . . . . . . . . . . . . 96
Antilock Brake System (ABS)Warning . . . . . . . . . . . . . . . . . . . . . . . . . 100
Automatic Vehicle Hold . . . . . . . . . . 101
Brake System Warning . . . . . . . . . . . . 99

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
INDEX 427
Lights (cont'd)Charging System . . . . . . . . . . . . . . . . . . . 97
Check Engine (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . . . . . . 97
Cruise Control . . . . . . . . . . . . . . . . . . . . . 106
Door Ajar . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Driver Mode Control . . . . . . . . . . . . . . 103
Electric Parking Brake . . . . . . . . . . . . 100
Engine Coolant Temperature Warning . . . . . . . . . . . . . . . . . . . . . . . . . 103
Engine Oil Pressure . . . . . . . . . . . . . . . 104
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . 128
High-Beam On . . . . . . . . . . . . . . . . . . . . 105
High/Low Beam Changer . . . . . . . . . 128
Lane Keep Assist . . . . . . . . . . . . . . . . . . 101
Low Fuel Warning . . . . . . . . . . . . . . . . 105
Seat Belt Reminders . . . . . . . . . . . . . . . 95
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Service Electric Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
StabiliTrak OFF . . . . . . . . . . . . . . . . . . . 102
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 104
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . . . . . . . 103
Traction Off . . . . . . . . . . . . . . . . . . . . . . . 102
Limited-Slip Differential . . . . . . . . . . . . 248 Locks
Automatic Door . . . . . . . . . . . . . . . . . . . . 17
Delayed Locking . . . . . . . . . . . . . . . . . . . 17
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Lockout Protection . . . . . . . . . . . . . . . . 18
Power Door . . . . . . . . . . . . . . . . . . . . . . . . . 17
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Loss of Control . . . . . . . . . . . . . . . . . . . . . . 206
Low Fuel Warning Light . . . . . . . . . . . 105
Low-Profile Tires . . . . . . . . . . . . . . . . . . . . 341
Lower Anchors and Tethers for Children (LATCH System) . . . . . . . . . 65
Lumbar Adjustment . . . . . . . . . . . . . . . . . 32 Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . 32
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . . . . . 388
Maintenance Schedule . . . . . . . . . . . . . 380
Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . . . . . 391
Malfunction Indicator Lamp . . . . . . . . 97
Manual Mode . . . . . . . . . . . . . . . . . .234, 235
Map Data Updates . . . . . . . . . . . . . . . . . . 163 Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Massage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Media
Avoiding Untrusted Devices . . . . . 145
Memory Seats . . . . . . . . . . . . . . . . . . . . . . . . 34
Messages Engine Power . . . . . . . . . . . . . . . . . . . . . 117
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Vehicle Speed . . . . . . . . . . . . . . . . . . . . . 117
Mirrors Automatic Dimming . . . . . . . . . . . . . . . 25
Automatic Dimming Rearview . . . . 26
Convex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Manual Rearview . . . . . . . . . . . . . . . . . . 26
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Tilt in Reverse . . . . . . . . . . . . . . . . . . . . . 25
Mirrors, Interior Rearview . . . . . . . . . . . 26
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241 Driver Control . . . . . . . . . . . . . . . . . . . . . 241
Monitor System, Tire Pressure . . . . . 348
Multi-band Antenna . . . . . . . . . . . . . . . . 145

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
428 INDEX
N
NavigationConnected Services . . . . . . . . . . . . . . . 418
Destination . . . . . . . . . . . . . . . . . . . . . . . . 155
Using the System . . . . . . . . . . . . . . . . . 150
Navigation Symbols . . . . . . . . . . . . . . . . 154
New Vehicle Break-In . . . . . . . . . . . . . . . 218
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
Engine Oil Life System . . . . . . . . . . . 314
Pressure Light . . . . . . . . . . . . . . . . . . . . . 104
Older Children, Restraints . . . . . . . . . . . 59
Online Owner Center . . . . . . . . . . . . . . . 402
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 412
OnStar Additional Information . . . . 414
OnStar Emergency . . . . . . . . . . . . . . . . . . 414
OnStar Overview . . . . . . . . . . . . . . . . . . . . 413
OnStar Security . . . . . . . . . . . . . . . . . . . . . 414
OnStar System . . . . . . . . . . . . . . . . .149, 160
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Overheating, Engine . . . . . . . . . . . . . . . . 322
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Instrument Panel . . . . . . . . . . . . . . . . . . . . 4
P
ParkShifting Into . . . . . . . . . . . . . . . . 223, 224
Shifting Out of . . . . . . . . . . . . . . . . . . . . 225
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Parking Brake and P (Park)Mechanism Check . . . . . . . . . . . . . . . 327
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Over Things That Burn . . . . . . . . . . . 226
Parking or Backing Assistance Systems . . . . . . . . . . . . . . . 277
Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Passenger Sensing System . . . . . . . . . . 53
Pedestrian Ahead Indicator . . . . . . . . 102
Perchlorate Materials
Requirements, California . . . . . . . . . 306
Performance Shifting Light . . . . . . . . 101
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 Phone
Apple CarPlay and
Android Auto . . . . . . . . . . . . . . . . . . . . 174
Bluetooth . . . . . . . . . . . . . . . . . . . . 169, 170
Port USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Positioning
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . 17
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Protection, Battery . . . . . . . . . . . . . . . . 133
Retained Accessory (RAP) . . . . . . . . 223
Seat Adjustment . . . . . . . . . . . . . . . . . . . 32
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Pregnancy, Using Seat Belts . . . . . . . . . 46
Privacy Vehicle Data Recording . . . . . . . . . . 410
Problems with Route Guidance . . . . 162
Program Courtesy Transportation . . . . . . . . . 405
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . 294
Proposition 65 Warning,
California . . . . . . . . . . . . . . .305, 326, 366,
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