CADILLAC XT4 2021 Owner's Manual

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
390 ONSTAR
the vehicle. The available
dealer-installed TTY system can
provide in-vehicle access to all OnStar
services, except Virtual Advisor and
OnStar Turn-by-Turn Navigation.
If equipped, TTY mode can be turned
on or off by touching Settings, then
Apps, and then Phone. When TTY
mode is on, phone calls can be made
or received with OnStar using the
infotainment display.
OnStar Personal Identification
Number (PIN)
A PIN is needed to access some
OnStar services. The PIN will need to
be changed the first time when
speaking with an Advisor. To change
the OnStar PIN, contact an OnStar
Advisor by pressing
Qor calling
1-888-4ONSTAR.
Warranty
OnStar equipment may be warranted
as part of the vehicle warranty.
Languages
The vehicle can be programmed to
respond in multiple languages. Press
Qand ask for an Advisor. Advisors
are available in English, Spanish, and
French. Available languages may vary
by country.
Potential Issues
OnStar cannot perform Remote Door
Unlock or Stolen Vehicle Assistance
after the vehicle has been off
continuously for 10 days without an
ignition cycle. If the vehicle has not
been started for 10 days, OnStar can
contact Roadside Service or a
locksmith to help gain access to the
vehicle.
Global Positioning System (GPS)
.Obstruction of the GPS can occur in
a large city with tall buildings; in
parking garages; around airports; in
tunnels and underpasses; or in an
area with very dense trees. If GPS
signals are not available, the OnStar
system should still operate to call
OnStar. However, OnStar could have
difficulty identifying the exact
location.
.In emergency situations, OnStar can
use the last stored GPS location to
send to emergency responders.
A temporary loss of GPS can cause
loss of the ability to send a
Turn-by-Turn Navigation route. The
Advisor may give a verbal route or
may ask for a call back after the
vehicle is driven into an open area.
Cellular and GPS Antennas
Cellular reception is required for
OnStar to send remote signals to the
vehicle. Do not place items over or
near the antenna to prevent blocking
cellular and GPS signal reception.
Unable to Connect to OnStar
Message
If there is limited cellular coverage or
the cellular network has reached
maximum capacity, this message may
come on. Press
Qto try the call again
or try again after driving a few miles
into another cellular area.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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ONSTAR 391
Vehicle and Power Issues
OnStar services require a vehicle
electrical system, wireless service, and
GPS satellite technologies to be
available and operating for features to
function properly. These systems may
not operate if the battery is
discharged or disconnected.
Add-on Electrical Equipment
The OnStar system is integrated into
the electrical architecture of the
vehicle. Do not add any electrical
equipment. SeeAdd-On Electrical
Equipment 0280. Added electrical
equipment may interfere with the
operation of the OnStar system and
cause it to not operate.
Vehicle Software Updates
OnStar or GM may remotely deliver
software updates or changes to the
vehicle without further notice or
consent. These updates or changes
may enhance or maintain safety,
security, or the operation of the
vehicle or the vehicle systems.
Software updates or changes may
affect or erase data or settings that
are stored in the vehicle, such as saved navigation destinations or
pre-set radio stations. Neither OnStar
nor GM is responsible for any affected
or erased data or settings. These
updates or changes may also collect
personal information. Such collection
is described in the OnStar privacy
statement or separately disclosed at
the time of installation. These updates
or changes may also cause a system to
automatically communicate with GM
servers to collect information about
vehicle system status, identify
whether updates or changes are
available, or deliver updates or
changes. An active OnStar agreement
constitutes consent to these software
updates or changes and agreement
that either OnStar or GM may
remotely deliver them to the vehicle.Privacy
The complete OnStar Privacy
Statement may be found at
www.onstar.com (U.S.),
or www.onstar.ca (Canada). We
recommend that you review it. If you
have any questions, call
1-888-4ONSTAR (1-888-466-7827) or
press
Qto speak with an Advisor.
Users of wireless communications are
cautioned that the privacy of any
information sent via wireless cellular
communications cannot be assured.
Third parties may unlawfully intercept
or access transmissions and private
communications without consent.
OnStar - Software
Acknowledgements
To obtain the source code under GPL,
LGPL, MPL, and other open source
licenses, that is contained in this
product, please visit http://
opensource.lge.com. In addition to the
source code, all referred license terms,
warranty disclaimers, and copyright
notices are available for download.
This offer is valid for a period of three
years after our last shipment of this
product. This offer is valid to anyone
in receipt of this information.
*Provided through LG Electronics Inc.,
who is solely responsible for
provisions of related OSS compliance.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
392 CONNECTED SERVICES
Connected Services
Connected Services
Navigation . . . . . . . . . . . . . . . . . . . . . . . . 392
Connections . . . . . . . . . . . . . . . . . . . . . . 393
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . 394
Connected Services
Navigation
Navigation requires a specific OnStar
or connected service plan.
Press
Qto receive Turn-by-Turn
directions or have them sent to the
vehicle’s navigation screen,
if equipped.
Turn-by-Turn Navigation
1. PressQto connect to an Advisor.
2. Request directions to be downloaded to the vehicle.
3. Follow the voice-guided commands.
Using Voice Commands During a
Planned Route
Functionality of the Voice Command
button, if equipped, may vary by
vehicle and region. For some vehicles,
press
=to open the OnStar app on
the infotainment display. For other
vehicles press
=as follows. Cancel Route
1. Press
=. System responds: “OnStar
ready,” then a tone.
2. Say “Cancel route.” System
responds: “Do you want to cancel
directions?”
3. Say “Yes.”System responds: “OK,
request completed, thank you,
goodbye.”
Route Preview
1. Press
=. System responds: “OnStar
ready,” then a tone.
2. Say “Route preview.” System
responds with the next three
maneuvers.
Repeat
1. Press
=. System responds: “OnStar
ready,” then a tone.
2. Say “Repeat.” System responds with
the last direction given, then
responds with “OnStar ready,” then
a tone.
Get My Destination
1. Press
=. System responds: “OnStar
ready,” then a tone.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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CONNECTED SERVICES 393
2. Say“Get my destination.” System
responds with the address and
distance to the destination, then
responds with “OnStar ready,” then
a tone.
Send Destination to Vehicle
Directions can be sent to the vehicle’s
navigation screen, if equipped.
Press
Q, then ask the Advisor to
download directions to the vehicle’s
navigation system, if equipped. After
the call ends, the navigation screen
will provide prompts to begin driving
directions. Routes that are sent to the
navigation screen can only be
canceled through the navigation
system.
See www.onstar.com (U.S.) or
www.onstar.ca (Canada).
Connections
The following services help with
staying connected.
For coverage maps, see
www.onstar.com (U.S.) or
www.onstar.ca (Canada). Ensuring Security
.Change the default passwords for
the Wi-Fi hotspot and myCadillac
mobile app. Make these passwords
different from each other and use a
combination of letters and numbers
to increase the security.
.Change the default name of the
SSID (Service Set Identifier). This is
your network’s name that is visible
to other wireless devices. Choose a
unique name and avoid family
names or vehicle descriptions.
Wi-Fi Hotspot (If Equipped)
The vehicle may have a built-in Wi-Fi
hotspot that provides access to the
Internet and web content at 4G LTE
speed. Up to seven mobile devices can
be connected. A data plan is required.
Use the in-vehicle controls only when
it is safe to do so. 1. To retrieve Wi-Fi hotspot information, press
=to open the
OnStar app on the infotainment
display, then select Wi-Fi Hotspot.
On some vehicles, touch Wi-Fi or
Wi-Fi Settings on the screen. 2. The Wi-Fi settings will display the
Wi-Fi hotspot name (SSID),
password, and on some vehicles,
the connection type (no Internet
connection, 3G, 4G, 4G LTE), and
signal quality (poor, good,
excellent). The LTE icon shows
connection to Wi-Fi. It is possible
that the icon may not illuminate
even though the vehicle has an
active connection.
3. To change the SSID or password, press
Qor call 1-888-4ONSTAR to
connect with an Advisor. On some
vehicles, the SSID and password
can be changed in the Wi-Fi
Hotspot menu.
After initial set-up, your vehicle’s
Wi-Fi hotspot will connect
automatically to your mobile devices.
Manage data usage by turning Wi-Fi
on or off on your mobile device, by
using the myCadillac mobile app,
or by contacting an OnStar Advisor.
On some vehicles, Wi-Fi can also be
managed from the Wi-Fi
Hotspot menu.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
394 CONNECTED SERVICES
MyCadillac Mobile App (If Available)
Download the myCadillac mobile app
to compatible Apple and Android
smartphones. Cadillac users can
access the following services from a
smartphone:
.Remotely start/stop the vehicle,
if factory-equipped.
.Lock/unlock doors, if equipped with
automatic locks.
.Activate the horn and lamps.
.Check the vehicle’s fuel level, oil
life, or tire pressure,
if factory-equipped with the Tire
Pressure Monitor System.
.Send destinations to the vehicle.
.Locate the vehicle on a map (U.S.
market only).
.Turn the vehicle's Wi-Fi hotspot on/
off, manage settings, and monitor
data consumption, if equipped.
.Locate a dealer and schedule
service.
.Request Roadside Service.
.Set a parking reminder with pin
drop, take a photo, make a note,
and set a timer.
.Connect with Cadillac on social
media.
Features are subject to change. For
myCadillac mobile app information
and compatibility, see my.cadillac.com.
An active OnStar or connected service
plan may be required. A compatible
device, factory-installed remote start,
and power locks are required. Data
rates apply. See www.onstar.com for
details and system limitations.
Remote Services
Contact an OnStar Advisor to unlock
the doors or sound the horn and flash
the lamps.
Marketplace
OnStar Advisors can provide offers
from restaurants and retailers on your
route, help locate hotels, or book a
room. These services vary by market.
Diagnostics
By monitoring and reporting on the
vehicle’s key systems, OnStar
Advanced Diagnostics, if equipped,
provides a way to keep up on
maintenance. Capabilities vary by model. See www.onstar.com for details
and system limitations. Features are
subject to change. For updates on
feature capabilities, see
my.cadillac.com. Message and data
rates may apply.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
INDEX 395
IndexA
About Driving the Vehicle . . . . . . . . . . . . . 2
Accessories and Modifications . . . . . 283
Accessory Power . . . . . . . . . . . . . . . . . . . . 224
Active Fuel Management . . . . . . . . . . . 225
Adaptive Cruise Control . . . . . . . . . . . . 240
Add-On Electrical Equipment . . . . . . 280
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 388
Additional Maintenance
and Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 364
Adjustments Lumbar, Front Seats . . . . . . . . . . . . . . . 39
Agreements
Trademarks and License . . . . . . . . . 187
Air Cleaner/Filter, Engine . . . . . . . . . . 290
Air Conditioning . . . . . . . . . . . . . . . . . . . . 197
Air Filter Life System . . . . . . . . . . . . . . . . . . . . . . . . 289
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . . . . . . 201
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
How Does an Airbag Restrain? . . . . 58
Passenger Sensing System . . . . . . . . 60
What Makes an AirbagInflate? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Airbag System (cont'd)
What Will You See after an
Airbag Inflates? . . . . . . . . . . . . . . . . . . 59
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Where Are the Airbags? . . . . . . . . . . . 56
Airbags
Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Passenger Status Indicator . . . . . . . 104
Readiness Light . . . . . . . . . . . . . . . . . . . 104
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
System Check . . . . . . . . . . . . . . . . . . . . . . 54
Alarm Vehicle Security . . . . . . . . . . . . . . . . . . . . 25
Alert Lane Change . . . . . . . . . . . . . . . . . . . . . . 263
Rear Pedestrian . . . . . . . . . . . . . . . . . . . 256
Side Blind Zone (SBZA) . . . . . . . . . . 263
All-Season Tires . . . . . . . . . . . . . . . . . . . . . 309
All-Wheel Drive . . . . . . . . . . . . . . . .232, 298
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . 142
Antenna Multi-band . . . . . . . . . . . . . . . . . . . . . . . . 146
Antilock Brake System (ABS) . . . . . . 232 Warning Light . . . . . . . . . . . . . . . . . . . . 108

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
396 INDEX
Appearance CareExterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
Apple CarPlay and Android Auto . . . . . . . . . . . . . . . . . . . . . . 175
Armrest Storage . . . . . . . . . . . . . . . . . . . . . . 85
Assistance Systems for Driving . . . . 257
Assistance Systems for Parking and Backing . . . . . . . . . . . . . . . . . . . . . . . 250
Audio Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Auto Stop Stop/Start System . . . . . . . . . . . . . . . . 221
Automatic Dimming Mirrors . . . . . . . . . . . . . . . . . . 29
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . 18
Emergency Braking (AEB) . . . . . . . . 260
Headlamp System . . . . . . . . . . . . . . . . 131
Transmission . . . . . . . . . . . . . . . . . . . . . . 226
Transmission Fluid . . . . . . . . . . . . . . . 289
Automatic Transmission
Manual Mode . . . . . . . . . . . . . . . . . . . . . 231
Avoiding Untrusted Media Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147B
BatteryExterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Power Protection . . . . . . . . . . . . . . . . . . 135
Battery - North America . . . . . .297, 342
Blade Replacement, Wiper . . . . . . . . . 299
Bluetooth Overview . . . . . . . . . . . . . . . . . . . . 170, 171
Bluetooth Audio . . . . . . . . . . . . . . . . . . . . 150
Brake
Electric Boost . . . . . . . . . . . . . . . . . . . . . 232
Parking, Electric . . . . . . . . . . . . . . . . . . 233
System Warning Light . . . . . . . . . . . . 107
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296 Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Automatic Emergency (AEB) . . . . . 260
Braking System Front Pedestrian (FPB) . . . . . . . . . . . 261
Break-In, New Vehicle . . . . . . . . . . . . . . 219
Bulb Replacement Back-up Lamps . . . . . . . . . . . . . . . . . . . 302
Headlamp Aiming . . . . . . . . . . . . . . . . 301
Headlamps . . . . . . . . . . . . . . . . . . . . . . . . 301
Buying New Tires . . . . . . . . . . . . . . . . . . . 325
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
California
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . 282
California Proposition 65 Warning . . . . . . . . . . . . .282, 297, 342, Back Cover
Canadian Vehicle Owners . . . . . . . . . . . . . 1
Capacities and Specifications . . . . . . 371
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . . . . . 226
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Winter Driving . . . . . . . . . . . . . . . . . . . . 213
Cargo Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Caution, Danger, and Warning . . . . . . . . 2
Center Console Storage . . . . . . . . . . . . . . 86
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . 328
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Charging System Light . . . . . . . . . . . . . 105
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . 105
Child Restraints Infants and Young Children . . . . . . . 67

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INDEX 397
Child Restraints (cont'd)Lower Anchors and Tethers
for Children . . . . . . . . . . . . . . . . . . . . . . . 72
Older Children . . . . . . . . . . . . . . . . . . . . . 65
Securing . . . . . . . . . . . . . . . . . . . . . . . . 79, 81
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . 303
Cleaning
Exterior Care . . . . . . . . . . . . . . . . . . . . . . 348
Interior Care . . . . . . . . . . . . . . . . . . . . . . 352
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . . . . . 197
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Cluster, Instrument . . . . . . . . . . . . . . . . . . 99
Collision Damage Repair . . . . . . . . . . . 381
Compact Spare Tire . . . . . . . . . . . . . . . . . 341
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Compressor Kit, Tire Sealant . . . . . . . 331
Connected Services Connections . . . . . . . . . . . . . . . . . . . . . . . 393
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . 394
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . 392
Connections Connected Services . . . . . . . . . . . . . . . 393 Control
Traction and Electronic
Stability . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Control of a Vehicle . . . . . . . . . . . . . . . . 206
Controls Steering Wheel . . . . . . . . . . . . . . . . . . . . 138
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . 28
Coolant
Engine Temperature Gauge . . . . . . 103
Engine Temperature WarningLight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Cooling System . . . . . . . . . . . . . . . . . . . . . 291
Cornering Lamps . . . . . . . . . . . . . . . . . . . 133
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . 133
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Cover Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Coverage Explanations . . . . . . . . . . . . . 164
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . 237 Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Cruise Control, Adaptive . . . . . . . . . . . 240
Customer Assistance . . . . . . . . . . . . . . . 376 Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 376
Text Telephone (TTY) Users . . . . . 376 Customer Information
Publications Ordering
Information . . . . . . . . . . . . . . . . . . . . . . 383
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 374
Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . 385
D
Damage Repair, Collision . . . . . . . . . . . 381
Danger, Warning, and Caution . . . . . . . . 2
Data Collection Infotainment System . . . . . . . . . . . . . 386
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 386
Data Recorders, Event . . . . . . . . . . . . . . 385
Database Coverage Explanations . . . . . . . . . . . . . . . . . . . . . . 164
Daytime Running Lamps (DRL) . . . 131
Defensive Driving . . . . . . . . . . . . . . . . . . . 206
Delayed Locking . . . . . . . . . . . . . . . . . . . . . 18
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Diagnostics
Connected Services . . . . . . . . . . . . . . . 394
Distracted Driving . . . . . . . . . . . . . . . . . . 205
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . 133
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . . 114
Delayed Locking . . . . . . . . . . . . . . . . . . . 18
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

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398 INDEX
Door (cont'd)Power Locks . . . . . . . . . . . . . . . . . . . . . . . . 18
Drive Belt Routing, Engine . . . . . . . . . 373
Drive Systems All-Wheel Drive . . . . . . . . . . . . . 232, 298
Driver Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Driver Assistance Systems . . . . . . . . . 248
Driver Behavior . . . . . . . . . . . . . . . . . . . . . 204
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . . . . . . 114
Driver Mode Control . . . . . . . . . . . . . . . . 236
Driver Mode Control Light . . . . . . . . . 111
Driving
Assistance Systems . . . . . . . . . . . . . . . 257
Better Fuel Economy . . . . . . . . . . . . . 205
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . . . . . 271
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Environment . . . . . . . . . . . . . . . . . . . . . . 204
Hill and Mountain Roads . . . . . . . . 213
If the Vehicle is Stuck . . . . . . . . . . . . 214
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Loss of Control . . . . . . . . . . . . . . . . . . . . 208
Off-Road . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Off-Road Recovery . . . . . . . . . . . . . . . . 207
Vehicle Load Limits . . . . . . . . . . . . . . 215
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . 212 Driving (cont'd)
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Driving the Vehicle . . . . . . . . . . . . . . . . . . . . 2
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . . . . . 197
E
Electric Brake Boost . . . . . . . . . . . . . . . . 232
Electric Parking Brake . . . . . . . . . . . . . . 233
Electric Parking Brake Light . . . . . . . 107
Electrical Equipment, Add-On . . . . . 280
Electrical SystemEngine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
Fuses and Circuit Breakers . . . . . . . 303
Instrument Panel Fuse Block . . . . 306
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . 302
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 388
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . 290
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . 105
Compartment Overview . . . . . . . . . . 285
Coolant Temperature Gauge . . . . . 103
Coolant Temperature Warning Light . . . . . . . . . . . . . . . . . . . 111
Cooling System . . . . . . . . . . . . . . . . . . . 291 Engine (cont'd)
Drive Belt Routing . . . . . . . . . . . . . . . . 373
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Oil Life System . . . . . . . . . . . . . . . . . . . . 288
Oil Pressure Light . . . . . . . . . . . . . . . . . 112
Overheating . . . . . . . . . . . . . . . . . . . . . . . 294
Power Messages . . . . . . . . . . . . . . . . . . 120
Running While Parked . . . . . . . . . . . 226
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Engine Air Filter Life System . . . . . . 289
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . 134
Equipment, Towing . . . . . . . . . . . . . . . . . 277
Event Data Recorders . . . . . . . . . . . . . . 385
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . 134
Extended Parking . . . . . . . . . . . . . . . . . . . 225
Extender, Seat Belt . . . . . . . . . . . . . . . . . . 53
Exterior Lamp Controls . . . . . . . . . . . . 129
Exterior Lamps Off Reminder . . . . . . 131
Exterior Lighting Battery Saver . . . . 135
F
Filter, Engine Air Cleaner . . . . . . . . . . . . . . . . 290
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . 131
Flashers, Hazard Warning . . . . . . . . . . 132
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 337

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
INDEX 399
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
FluidAutomatic Transmission . . . . . . . . . 289
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . 28
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 383
Front Pedestrian Braking (FPB)
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Front Seats Heated and Ventilated . . . . . . . . . . . . 43
Front Storage . . . . . . . . . . . . . . . . . . . . . . . . 84
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Economy, Driving for Better . . . . . 205
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . . . . . . 270
Filling the Tank . . . . . . . . . . . . . . . . . . . 268
Foreign Countries . . . . . . . . . . . . . . . . . 268
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Low Fuel Warning Light . . . . . . . . . 112
Management, Active . . . . . . . . . . . . . . 225
Prohibited Fuels . . . . . . . . . . . . . . . . . . 268
Recommended . . . . . . . . . . . . . . . . . . . . 267
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . 267 Fuses
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
Fuses and Circuit Breakers . . . . . . . 303
Instrument Panel Fuse Block . . . . 306
G
Garage Door Opener . . . . . . . . . . . . . . . . 125 Programming . . . . . . . . . . . . . . . . . . . . . . 125
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . 300
Gauges Engine Coolant Temperature . . . . 103
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Speedometer . . . . . . . . . . . . . . . . . . . . . . 101
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 102
Trip Odometer . . . . . . . . . . . . . . . . . . . . 101
Warning Lights and Indicators . . . 99
Gear Shifting Light . . . . . . . . . . . . . . . . . 108
General Information Service and Maintenance . . . . . . . . 357
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . 282
Global Positioning System (GPS) . . . . . . . . . . . . . . . . . . . . . . 163
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 377 Guidance
Problems with the Route . . . . . . . . . 163
H
Hazard Warning Flashers . . . . . . . . . . 132
HD Radio Technology . . . . . . . . . . . . . . 144
Head Restraints . . . . . . . . . . . . . . . . . . . . . . 37
Head-up Display . . . . . . . . . . . . . . . . . . . . 116
Headlamps
Aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 131
Bulb Replacement . . . . . . . . . . . . . . . . 301
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . . . . . 131
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . 131
High-Beam On Light . . . . . . . . . . . . . . 113
High/Low Beam Changer . . . . . . . . . 131
Lamps On Reminder . . . . . . . . . . . . . . 113
Heated Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Steering Wheel . . . . . . . . . . . . . . . . . . . . . 91
Heated and Ventilated Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . 29
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
High-Beam On Light . . . . . . . . . . . . . . . . 113