2021 CADILLAC XT4 air filter

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
INSTRUMENTS AND CONTROLS 115
Speed :Shows the vehicle speed in
either kilometers per hour (km/h) or
miles per hour (mph).
Trip 1 or Trip 2 and Average Fuel
Economy : The Trip display shows the
current distance traveled, in either
kilometers (km) or miles (mi), since
the trip odometer was last reset. The
trip odometer can be reset by pressing
Vand selecting yes or no while this
display is active.
Shows the approximate average liters
per 100 kilometers (L/100 km),
kilometers per liter (km/L), or miles
per gallon (mpg). This number is
calculated based on the number of
L/100 km or km/L recorded since the
last time this menu item was reset.
This number reflects only the
approximate average fuel economy
that the vehicle has right now, and
will change as driving conditions
change. The Average Fuel Economy
can be reset by pressing
Vand
selecting yes or no while this display
is active.
Fuel Range : Shows the approximate
distance the vehicle can be driven
without refueling. LOW will be displayed when the vehicle is low on
fuel. The fuel range estimate is based
on an average of the vehicle's fuel
economy over recent driving history
and the amount of fuel remaining in
the fuel tank.
Oil Life :
Shows an estimate of the
oil's remaining useful life.
If REMAINING OIL LIFE 99% is
displayed, that means 99% of the
current oil life remains.
When the remaining oil life is low, the
CHANGE ENGINE OIL SOON message
will appear on the display. The oil
should be changed as soon as
possible. See Engine Oil0286. In
addition to the engine oil life system
monitoring the oil life, additional
maintenance is recommended. See
Maintenance Schedule 0358.
The Oil Life display must be reset
after each oil change. It will not reset
itself. Do not reset the Oil Life display
accidentally at any time other than
when the oil has just been changed.
It cannot be reset accurately until the
next oil change. To reset the engine
oil life system, see Engine Oil Life
System 0288. Tire Pressure :
Shows the
approximate pressures of all four tires.
Tire pressure is displayed in either
kilopascal (kPa) or in pounds per
square inch (psi). If the pressure is
low, the value for that tire is shown in
amber. See Tire Pressure Monitor
System 0318 and
Tire Pressure Monitor Operation 0319.
Air Filter Life : Shows an estimate of
the engine air filter’s remaining useful
life and the state of the system.
Engine Air Filter Life 95% means 95%
of the current air filter life remains.
Messages will display based on the
engine air filter life and the state of
the system. When the REPLACE AT
NEXT OIL CHANGE message displays,
the engine air filter should be replaced
at the time of the next oil change.
When the REPLACE SOON message
displays, the engine air filter should
be replaced at the earliest
convenience.
The Air Filter Life display must be
reset after the engine air filter
replacement. To reset, see Engine Air
Filter Life System 0289.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
182 INFOTAINMENT SYSTEM
.Bose AudioPilot Noise
Compensation Technology (If
Equipped): This feature adjusts the
volume based on the noise in the
vehicle and the speed.
Touch Off or On.
.Manage Favorites: Touch to display
a list of Audio, Mobile Devices, and
Navigation favorites.
Favorites can be moved, renamed,
or deleted.
To move, touch and hold the
favorite, and then drag up or down
to rearrange the position.
.Set Number of Audio Favorites:
Touch to select how many favorites
pages can be viewed from the audio
application. The Auto setting will
automatically adjust this number
based on the number of favorites
you have saved. Touch Auto, 5, 10,
15, 20, 25, 30, 35, or 40.
.RDS: This allows the Radio Data
System (RDS) to be turned on or off.
Touch the controls on the
infotainment display to disable or
enable.
.HD Radio: This allows HD Radio
reception to be turned on or off.
Touch the controls on the
infotainment display to disable or
enable.
.Explicit Content Filter: This setting
allows access to explicit content
SiriusXM channels.
Touch Off or On.
.Manage Phones: Select to connect
to a different phone source,
disconnect a phone, or delete a
phone.
.Reset Music Index: This allows the
music index to be reset if you are
having difficulty accessing all of the
media content on your device.
Touch Yes or No.
Climate
Touch and the following may display:
.Auto Fan Speed: This setting
specifies the amount of airflow
when the climate control fan setting
is Auto Fan.
Touch Low, Medium, or High.
.Air Quality Sensor: This setting
switches the system into
Recirculation Mode based on the
quality of the outside air.
Touch Off, Low Sensitivity, or High
Sensitivity.
.Auto Cooled Seats: This setting
automatically turns on and
regulates the ventilated seats when
the cabin temperature is warm.
Touch the controls on the
infotainment display to disable or
enable.
.Auto Heated Seats: This setting
automatically turns on and
regulates the heated seats when the
cabin temperature is cool. The auto
heated seats can be turned off by
using the heated seat controls on
the center stack.
Touch the controls on the
infotainment display to disable or
enable.
.Auto Defog: This setting
automatically turns the front
defogger on when the vehicle engine
is started.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
186 INFOTAINMENT SYSTEM
Set Audio Volume Limit :Allows a
maximum radio volume to be set. Use
the arrows to choose the maximum
allowable level for the audio volume.
Teen Driver Speed Limiter : Limits
the maximum speed of the vehicle.
When the speed limiter is turned on
and the vehicle is started with a Teen
Driver key, the DIC displays a message
that the top speed is limited.
On certain vehicles, when the Speed
Limiter is turned ON, the vehicle’s
maximum acceleration will be limited.
The DIC will display a message that
the acceleration is limited.
Teen Driver Speed Warning : Allows
the speed warning to be turned on or
off. Touch Set Teen Driver Speed
Warning to set the warning speed.
Set Teen Driver Speed Warning :
Displays a warning in the DIC when
exceeding a selectable speed. Choose
the desired speed warning level. The
speed warning does not limit the
speed of the vehicle.
SiriusXM Explicit Content Filter (if
equipped) : Allows the SiriusXM
Explicit Content Filter to be turned ON or OFF. When ON, the teen driver
will not be able to listen to SiriusXM
stations that contain explicit content,
and the Explicit Content Filter
selection in the Audio Settings will be
unavailable for change.
When Teen Driver is Active:
.If equipped with Buckle to Drive,
shifting out of P (Park) will be
prevented if the driver seat belt, and
in some vehicles the front passenger
seat belt, is not buckled.
.The radio will mute when the driver
seat belt, and in some vehicles the
front passenger seat belt, is not
buckled. The audio from any device
paired to the vehicle will also be
muted.
.An object placed on the front
passenger seat, such as a briefcase,
handbag, grocery bag, laptop,
or other electronic device, could
cause the passenger sensing system
to falsely sense an unbuckled front
passenger and mute the radio.
If this happens, remove the object
from the seat. See
Passenger Sensing
System 060.
.Some safety systems, such as
Forward Collision Alert, if equipped,
cannot be turned off.
.The gap setting for the Forward
Collision Alert and Adaptive Cruise
Control, if equipped, cannot be
changed.
.When trying to change a safety
feature that is not configurable in
Teen Driver, the DIC displays a
message indicating that Teen Driver
is active and the action is not
available.
.Super Cruise, if equipped, is not
available.
.Enhanced Low Fuel Warning (if
equipped) –When the vehicle is low
on fuel, the low fuel light on the
instrument cluster flashes and the
DIC low fuel warning cannot be
dismissed.
.Do not tow a trailer.
Report Card
The vehicle owner must secure the
driver’s consent to record certain
vehicle data when the vehicle is driven
with a registered Teen Driver key.
There is one Report Card per vehicle.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
CLIMATE CONTROLS 197
Climate Controls
Climate Control Systems
Dual Automatic Climate ControlSystem . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Maintenance
Passenger Compartment AirFilter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Climate Control Systems
Dual Automatic Climate Control System
The climate control buttons on the center stack and on the climate control
display are used to adjust the heating, cooling, and ventilation.
1. ON/OFF
2. AUTO (Automatic Operation)
3. Air Delivery Mode Controls
4. Driver Temperature Control
5. Fan Control
6. Passenger Temperature Control 7. A/C (Air Conditioning)
8. Recirculation
9. SYNC (Synchronized Temperature)
10. Max Defrost
11. Rear Window Defogger

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
CLIMATE CONTROLS 201
Sensor
The solar sensor, on top of the
instrument panel near the windshield,
monitors the solar intensity.
The climate control system uses the
sensor information to adjust the
temperature, fan speed, recirculation,
and air delivery mode for best
comfort.
If the sensor is covered, the automatic
climate control system may not work
properly.
Air Vents
Adjustable air vents are in the center
and on the sides of the instrument
panel, and on the rear of the center
console storage.
Move the slider knobs to change the
direction of or to close off the airf low.
Operation Tips
.Clear away any ice, snow, or leaves
from air inlets at the base of the
windshield that could block the
flow of air into the vehicle.
.Clear snow off the hood to improve
visibility and help decrease moisture
drawn into the vehicle.
.Keep the path under the front seats
clear of objects to help circulate the
air inside of the vehicle more
effectively.
.Use of non-GM approved hood
deflectors can adversely affect the
performance of the system. Check
with your dealer before adding
equipment to the outside of the
vehicle.
.Do not attach any devices to the air
vent slats. This restricts airf low and
may cause damage to the air vents.
Maintenance
Passenger Compartment
Air Filter
The filter reduces dust, pollen, and
other airborne irritants from outside
air that is pulled into the vehicle. The
filter should be replaced as part of
routine scheduled maintenance. See
Maintenance Schedule0358.
See your dealer regarding replacement
of the filter.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
DRIVING AND OPERATING 223
To Use the Engine Heater
1. Turn off the engine.
2. Open the hood and unwrap theelectrical cord. The cord is located
on the passenger side of the
compartment near the air cleaner/
filter.
Check the heater cord for damage.
If it is damaged, do not use it. See
your dealer for a replacement.
Inspect the cord for damage yearly.
3. Plug it into a normal, grounded 110-volt AC outlet.
{Warning
Improper use of the heater cord or
an extension cord can damage the
cord and may result in overheating
and fire.
.Plug the cord into a three-prong
electrical utility receptacle that is
protected by a ground fault
detection function. An
ungrounded outlet could cause
an electric shock.
.Use a weatherproof, heavy-duty,
15 amp-rated extension cord if
needed. Failure to use the
recommended extension cord in
good operating condition,
or using a damaged heater or
extension cord, could make it
(Continued)
Warning (Continued)
overheat and cause a fire,
property damage, electric shock,
and injury.
.Do not operate the vehicle with
the heater cord permanently
attached to the vehicle. Possible
heater cord and thermostat
damage could occur.
.While in use, do not let the
heater cord touch vehicle parts
or sharp edges. Never close the
hood on the heater cord.
.Before starting the vehicle,
unplug the cord, reattach the
cover to the plug, and securely
fasten the cord. Keep the cord
away from any moving parts.
4. Before starting the engine, be sure to unplug and store the cord as it
was before to keep it away from
moving engine parts. If you do not
it could be damaged.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
VEHICLE CARE 281
Vehicle Care
General Information
General Information . . . . . . . . . . . . . 282
California Proposition65 Warning . . . . . . . . . . . . . . . . . . . . . 282
California Perchlorate Materials Requirements . . . . . . . . . . . . . . . . . . . 282
Accessories and Modifications . . . . . . . . . . . . . . . . . . . 283
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . . . . . . 283
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . . . . . . 285
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . 286
Engine Oil Life System . . . . . . . . . . . 288
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289
Engine Air Filter Life System . . . . 289
Engine Air Cleaner/Filter . . . . . . . . . 290
Cooling System . . . . . . . . . . . . . . . . . . . 291
Engine Overheating . . . . . . . . . . . . . . 294
Washer Fluid . . . . . . . . . . . . . . . . . . . . . 295
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . 296
Battery - North America . . . . . . . . . 297
All-Wheel Drive . . . . . . . . . . . . . . . . . . 298 Park Brake and P (Park)
Mechanism Check . . . . . . . . . . . . . . 298
Wiper Blade Replacement . . . . . . . 299
Windshield Replacement . . . . . . . . 300
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . 300
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . 301
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . 301
LED Lighting . . . . . . . . . . . . . . . . . . . . . 301
Back-Up Lamps . . . . . . . . . . . . . . . . . . . 302
Electrical System
Electrical System Overload . . . . . . 302
Fuses and Circuit Breakers . . . . . . 303
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
Instrument Panel Fuse Block . . . . 306
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308
All-Season Tires . . . . . . . . . . . . . . . . . . 309
Winter Tires . . . . . . . . . . . . . . . . . . . . . . 310
Summer Tires . . . . . . . . . . . . . . . . . . . . 310
Tire Sidewall Labeling . . . . . . . . . . . 310
Tire Designations . . . . . . . . . . . . . . . . . 312
Tire Terminology and Definitions . . . . . . . . . . . . . . . . . . . . . . 313
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 316 Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . . . . . . . 317
Tire Pressure Monitor System . . . 318
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . . . . . . 319
Tire Inspection . . . . . . . . . . . . . . . . . . . 322
Tire Rotation . . . . . . . . . . . . . . . . . . . . . 323
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Buying New Tires . . . . . . . . . . . . . . . . 325
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Uniform Tire Quality Grading . . . 326
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 328
Wheel Replacement . . . . . . . . . . . . . . 328
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . 328
If a Tire Goes Flat . . . . . . . . . . . . . . . . 329
Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . . . 331
Storing the Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . . . 336
Tire Changing . . . . . . . . . . . . . . . . . . . . . 337
Compact Spare Tire . . . . . . . . . . . . . . 341
Jump Starting
Jump Starting - North America . . . . . . . . . . . . . . . . . . . . . . . . . 342

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
286 VEHICLE CARE
1.Engine Air Cleaner/Filter 0290.
2. Engine Oil Fill Cap. See Engine Oil
0 286.
3. Engine Oil Dipstick. See Engine Oil
0 286.
4. Engine Cooling Fan (Out of View). See Cooling System 0291.
5. Brake Fluid Reservoir. See Brake
Fluid 0296.
6. Battery - North America 0297.
7. Engine Coolant Surge Tank and Pressure Cap. See Cooling System
0 291.
8. Positive (+) Battery Terminal (Under Cover). See Jump Starting -
North America 0342.
9. Windshield Washer Fluid Reservoir. See Washer Fluid 0295.
10. Engine Compartment Fuse Block
0303.
11. Remote Negative (-) Battery Terminal. See Jump Starting - North
America 0342.Engine Oil
To ensure proper engine performance
and long life, careful attention must
be paid to engine oil. Following these
simple, but important steps will help
protect your investment:
.Use engine oil approved to the
proper specification and of the
proper viscosity grade. See
“Selecting the Right Engine Oil” in
this section.
.Check the engine oil level regularly
and maintain the proper oil level.
See “Checking Engine Oil” and
“When to Add Engine Oil” in this
section.
.Change the engine oil at the
appropriate time. See Engine Oil Life
System 0288.
.Always dispose of engine oil
properly. See “What to Do with Used
Oil” in this section.
Checking Engine Oil
Check the engine oil level regularly,
every 650 km (400 mi), especially prior
to a long trip. The engine oil dipstick handle is a loop. See
Engine
Compartment Overview 0285 for the
location.
{Warning
The engine oil dipstick handle may
be hot; it could burn you. Use a
towel or glove to touch the dipstick
handle.
If a low oil Driver Information Center
(DIC) message displays, check the oil
level.
Follow these guidelines:
.To get an accurate reading, park the
vehicle on level ground. Check the
engine oil level after the engine has
been off for at least two hours.
Checking the engine oil level on
steep grades or too soon after
engine shutoff can result in
incorrect readings. Accuracy
improves when checking a cold
engine prior to starting. Remove the
dipstick and check the level.
.If unable to wait two hours, the
engine must be off for at least
15 minutes if the engine is warm,
or at least 30 minutes if the engine