service CADILLAC CT4 2021 Service Manual

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
INFOTAINMENT SYSTEM 183
SiriusXM
Touch and the following may display:
.Account Information: Displays the
account information and
subscription information.
.Listener Options: Based on the
current vehicle profile selected.
Touch and the following may
display:
.SiriusXM Favorites: Favorites
shown can be moved or deleted.
.Listener Settings: Selections
include hide explicit language,
channels and content, reset
listening history, and start songs
at the beginning when tuning to
a music channel.
.System Settings: Enable or disable
SiriusXM location services. Also
shows radio ID.
.Contact SiriusXM: Displays radio ID
and phone number to call SiriusXM
Customer Care.
.SiriusXM Policies: Shows
information on the Customer
Agreement and Privacy Policy.
Vehicle
This menu allows adjustment of
different vehicle features. SeeVehicle
Personalization 0117.
Personal
If equipped, this menu allows
adjustment of different user profile
settings. See “Users”in Using the
System 0137 for information on
setting up user profiles.
The menu may contain the following:
Name
Touch to edit your user name that will
be displayed in the vehicle.
Vehicle Account Information
Touch to view the vehicle account
information and to change the
account password.
An “unverified user account ”pop-up
will display until the account
information verification process has
been completed on the Internet.
Check your registered e-mail account
for an activation e-mail to complete
the verification process. Profile Picture
Touch to choose or change your
profile picture.
Profile Identifiers
Touch to have the vehicle recognize
the identifier you choose.
Touch Vehicle Key 1 and/or
Vehicle Key 2.
If the remote key is lost or stolen, see
your dealer.
Security
Touch to have your profile secured
with a Personal Identification
Number (PIN).
Touch No or Yes.
Vehicle Name
Touch to edit your vehicle name.
Vehicle Account
Touch to view the vehicle account
information and to change the
account password.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
INFOTAINMENT SYSTEM 187
Trademarks and License
Agreements
FCC Information
SeeRadio Frequency Statement 0409.
"Made for iPod," and "Made for
iPhone," mean that an electronic
accessory has been designed to
connect specifically to iPod or iPhone,
respectively, and has been certified by
the developer to meet Apple
performance standards. Apple is not
responsible for the operation of this
device or its compliance with safety
and regulatory standards. Please note
that the use of this accessory with
iPod or iPhone may affect wireless
performance. iPhone, iPod, iPod
classic, iPod nano, iPod shuffle, and
iPod touch are trademarks of Apple
Inc., registered in the U.S. and other
countries.
If you decide to continue service after
your trial, your selected subscription
plan will automatically renew
thereafter. You will be charged at
then-current rates. Fees and taxes
apply. Please see the SiriusXM
Customer Agreement at siriusxm.com
for complete terms and how to cancel,
which includes calling SiriusXM at
1-866-635-2349. All fees and
programming are subject to change.
Fees and Taxes: Subscription fee,
taxes, one time activation fee, and
other fees may apply. Subscription fee
is consumer only. All fees and
programming subject to change.
Subscriptions subject to Customer
Agreement available at
www.siriusxm.com. SiriusXM service is
only available in the 48 contiguous
United States and Canada. In Canada: Some deterioration of
service may occur in extreme northern
latitudes. This is beyond the control of
SiriusXM Satellite Radio.
Explicit Language Notice: Channels
with frequent explicit language are
indicated with an
“XL”preceding the
channel name. Channel blocking is
available for SiriusXM Satellite Radio
receivers by notifying SiriusXM:
.USA Customers —See
www.siriusxm.com or call
1-888-601–6296.
.Canada Customers —See
www.siriusxm.ca or call
1-877-438-9677.
It is prohibited to copy, decompile,
disassemble, reverse engineer, hack,
manipulate, or otherwise make
available any technology or software
incorporated in receivers compatible
with the SiriusXM Satellite Radio
System or that support the SiriusXM
website, the Online Service or any of
its content. Furthermore, the AMBER
voice compression software included
in this product is protected by

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
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188 INFOTAINMENT SYSTEM
intellectual property rights including
patent rights, copyrights, and trade
secrets of Digital Voice Systems, Inc.
General Requirements:1. A License Agreement from SiriusXM is required for any
product that incorporates SiriusXM
Technology and/or for use of any of
the SiriusXM marks to be
manufactured, distributed,
or marketed in the SiriusXM
Service Area.
2. For products to be distributed, marketed, and/or sold in Canada, a
separate agreement is required with
Canadian Satellite Radio Inc.
(operating as SiriusXM Canada).
TouchSense Technology and
TouchSense System 1000 Series
Licensed from Immersion Corporation. TouchSense System 1000 protected
under one or more of the U.S. Patents
at the following address
www.immersion.com/
patent-marking.html and other
patents pending.
Bose
Bose AudioPilot and Bose Centerpoint
surround are registered trademarks of
Bose Corporation in the U.S. and other
countries.
HD Radio Technology
HD Radio Technology manufactured
under license from iBiquity Digital
Corporation. U.S. and Foreign Patents.
For patents see http://dts.com/patents.
HD Radio and the HD, HD Radio, and
“ARC”
logos are registered trademarks
or trademarks of iBiquity Digital
Corporation in the United States and/
or other countries. Bluetooth
The Bluetooth word mark and logos
are owned by the Bluetooth SIG, Inc.
and any use of such marks by General
Motors is under license. Other
trademarks and trade names are those
of their respective owners.
Java
Java is a registered trademark of
Oracle and/or its affiliates.
Schedule I: Gracenote EULA
Music recognition technology and
related data are provided by
Gracenote. Gracenote is the industry
standard in music recognition
technology and related content
delivery. For more information see
www.gracenote.com.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
INFOTAINMENT SYSTEM 189
Music-related data from Gracenote,
Inc., copyright © 2000 to present
Gracenote. Gracenote Software,
copyright © 2000 to present
Gracenote. One or more patents
owned by Gracenote may apply to this
product and service. See the
Gracenote website for a
non-exhaustive list of applicable
Gracenote patents. Gracenote, CDDB,
MusicID, MediaVOCS, the Gracenote
logo and logotype, and the "Powered
by Gracenote" logo are either
registered trademarks or trademarks
of Gracenote in the United States and/
or other countries.
Gracenote Terms of Use
This application or device contains
software from Gracenote, Inc. of
Emeryville, California ("Gracenote").
The software from Gracenote (the
"Gracenote Software") enables this
application to do disc or file
identification and obtain
music-related information, including
name, artist, track, and title
information ("Gracenote Data") from
online servers or embedded databases
(collectively, "Gracenote Servers") andto perform other functions. You may
use Gracenote Data only by means of
the intended End-User functions of
this application or device.
This application or device may
contain content belonging to
Gracenote’s providers. If so, all of the
restrictions set forth herein with
respect to Gracenote Data shall also
apply to such content and such
content providers shall be entitled to
all of the benefits and protections set
forth herein that are available to
Gracenote.
You agree that you will use Gracenote
Data, the Gracenote Software, and
Gracenote Servers for your own
personal non-commercial use only.
You agree not to assign, copy, transfer
or transmit the Gracenote Software or
any Gracenote Data to any third party.
YOU AGREE NOT TO USE OR
EXPLOIT GRACENOTE DATA, THE
GRACENOTE SOFTWARE, OR
GRACENOTE SERVERS, EXCEPT AS
EXPRESSLY PERMITTED HEREIN.
You agree that your non-exclusive
license to use the Gracenote Data, the
Gracenote Software, and GracenoteServers will terminate if you violate
these restrictions. If your license
terminates, you agree to cease any
and all use of the Gracenote Data, the
Gracenote Software, and Gracenote
Servers. Gracenote reserves all rights
in Gracenote Data, the Gracenote
Software, and the Gracenote Servers,
including all ownership rights. Under
no circumstances will Gracenote
become liable for any payment to you
for any information that you provide.
You agree that Gracenote may enforce
its rights under this Agreement
against you directly in its own name.
The Gracenote service uses a unique
identifier to track queries for
statistical purposes. The purpose of a
randomly assigned numeric identifier
is to allow the Gracenote service to
count queries without knowing
anything about who you are. For more
information, see the web page for the
Gracenote Privacy Policy for the
Gracenote service.
The Gracenote Software and each item
of Gracenote Data are licensed to you
"AS IS." Gracenote makes no
representations or warranties, express

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
190 INFOTAINMENT SYSTEM
or implied, regarding the accuracy of
any Gracenote Data. Gracenote
reserves the right to delete data from
the Gracenote Servers or to change
data categories for any cause that
Gracenote deems sufficient. No
warranty is made that the Gracenote
Software or Gracenote Servers are
error-free or that functioning of
Gracenote Software or Gracenote
Servers will be uninterrupted.
Gracenote is not obligated to provide
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data types or categories that
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at any time.
GRACENOTE DISCLAIMS ALL
WARRANTIES EXPRESS OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO,
IMPLIED WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE, TITLE, AND
NON-INFRINGEMENT. GRACENOTE
DOES NOT WARRANT THE RESULTS
THAT WILL BE OBTAINED BY YOUR
USE OF THE GRACENOTE
SOFTWARE OR ANY GRACENOTE
SERVER. IN NO CASE WILL
GRACENOTE BE LIABLE FOR ANYCONSEQUENTIAL OR INCIDENTAL
DAMAGES OR FOR ANY LOST
PROFITS OR LOST REVENUES.
© 2014. Gracenote, Inc. All Rights
Reserved.
MPEG4–AVC (H.264)
THIS PRODUCT IS LICENSED UNDER
THE AVC PATENT PORTFOLIO
LICENSE FOR THE PERSONAL AND
NON-COMMERCIAL USE OF A
CONSUMER TO (i) ENCODE VIDEO IN
COMPLIANCE WITH THE AVC
STANDARD (“AVC VIDEO”) AND/OR
(ii) DECODE AVC VIDEO THAT WAS
ENCODED BY A CONSUMER
ENGAGED IN A PERSONAL AND
NON-COMMERCIAL ACTIVITY AND/
OR WAS OBTAINED FROM A VIDEO
PROVIDER LICENSED TO PROVIDE
AVC VIDEO. NO LICENSE IS
GRANTED OR SHALL BE IMPLIED
FOR ANY OTHER USE. ADDITIONAL
INFORMATION MAY BE OBTAINED
FROM MPEG LA, LLC. SEE
HTTP://WWW.MPEGLA.COM.
VC-1
THIS PRODUCT IS LICENSED UNDER
THE VC-1 PATENT PORTFOLIO
LICENSE FOR THE PERSONAL AND
NON-COMMERCIAL USE OF A
CONSUMER TO (i) ENCODE VIDEO IN
COMPLIANCE WITH THE VC-1
STANDARD (“VC-1 VIDEO”) AND/OR
(ii) DECODE VC-1 VIDEO THAT WAS
ENCODED BY A CONSUMER
ENGAGED IN A PERSONAL AND
NON-COMMERCIAL ACTIVITY AND/
OR WAS OBTAINED FROM A VIDEO
PROVIDER LICENSED TO PROVIDE
VC-1 VIDEO. NO LICENSE IS
GRANTED OR SHALL BE IMPLIED
FOR ANY OTHER USE. ADDITIONAL
INFORMATION MAY BE OBTAINED
FROM MPEG LA, LLC. SEE
HTTP://WWW.MPEGLA.COM.
MPEG4–Visual
USE OF THIS PRODUCT IN ANY
MANNER THAT COMPLIES WITH
THE MPEG-4 VISUAL STANDARD IS
PROHIBITED, EXCEPT FOR USE BY A
CONSUMER ENGAGING IN
PERSONAL AND NON-COMMERCIAL
ACTIVITIES.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
INFOTAINMENT SYSTEM 191
MP3
MPEG Layer-3 audio coding
technology licensed from Fraunhofer
IIS and Thomson.
WMV/WMA
This product includes technology
owned by Microsoft Corporation and
under a license from Microsoft
Licensing, GP. Use or distribution of
such technology outside of this
product is prohibited without a license
from Microsoft Corporation and/or
Microsoft Licensing, GP as applicable.
Map End User License
Agreement
END USER TERMS
The Map Data SD card (“Data”) is
provided for your personal, internal
use only and not for resale. It is
protected by copyright, and is subject
to the following terms (this “End User
License Agreement ”) and conditions
which are agreed to by you, on the
one hand, and HERE North America,
LLC (“HERE”) and its licensors
(including their licensors and
suppliers) on the other hand. The Data for areas of Canada includes
information taken with permission
from Canadian authorities, including:
© Her Majesty the Queen in Right of
Canada, © Queen's Printer for Ontario,
© Canada Post Corporation, GeoBase
®.
HERE holds a nonexclusive license
from the United States Postal Service
®
to publish and sell ZIP+4®
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© United States Postal Service 2013.
Prices are not established, controlled,
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Postal Service. The following
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Postal Service, USPS, and ZIP+4.
TERMS AND CONDITIONS
Personal Use Only: You agree to use
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You may transfer the Data and all
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set as provided to you and not as a
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Restrictions
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or (b) with, or in communication with,
including without limitation, cellular
phones, palmtop and handheld
computers, pagers, and personal
digital assistants or PDAs.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
196 CLIMATE CONTROLS
Climate Controls
Climate Control Systems
Dual Automatic Climate ControlSystem . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Maintenance
Passenger Compartment AirFilter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
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 system. Center
Stack Climate Controls
1. ON/OFF (Power)
2. AUTO (Automatic Operation)
3. Air Delivery Mode Control
4. Driver Temperature Controls
5. Fan Control
6. Passenger Temperature Controls7. A/C (Air Conditioning)
8. Recirculation
9. SYNC (Synchronized Temperature)
10. Defrost
11. Rear Window Defogger

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CLIMATE CONTROLS 201
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 Schedule0380.
See your dealer regarding replacement
of the filter.
Service
All vehicles have a label underhood
that identifies the refrigerant used in
the vehicle. The refrigerant system
should only be serviced by trained and
certified technicians. The air
conditioning evaporator should never
be repaired or replaced by one from a
salvage vehicle. It should only be
replaced by a new evaporator to
ensure proper and safe operation. During service, all refrigerants should
be reclaimed with proper equipment.
Venting refrigerants directly to the
atmosphere is harmful to the
environment and may also create
unsafe conditions based on inhalation,
combustion, frostbite, or other
health-based concerns.
The air conditioning system requires
periodic maintenance. See
Maintenance Schedule
0380.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
DRIVING AND OPERATING 209
Caution (Continued)
performance or race track driving.
SeeRecommended Fluids and
Lubricants 0391.
Brake Fade Warning Assist
The Brake Fade Warning Assist
system monitors the performance of
the brake system. If the system
detects brake fade, or if the brake
fluid is near the boiling point, the
driver will be alerted.
The Brake Fade Warning Assist
system is designed for use with the
factory-installed brake pads or
GM-approved replacement pads. If the
brake pads on the vehicle need to be
replaced, use GM-approved brake
pads. If this is not done, the brake
fade warning system may not function
properly.
Stage 1 : The Driver Information
Center (DIC) displays a “Reduce
Braking to Avoid Overheating”
message and brake pedal effort and
travel is increased. When the message
displays, the driver should decrease
brake pedal pressure. Stage 2 :
The Driver Information
Center (DIC) displays a “Brakes
Overheated Service Now ”message that
the brake fluid temperature is
excessive and is about to boil. The
system increases brake pedal effort
and travel, and will also limit vehicle
speed. The driver should immediately
start a cool down lap if on the track.
If this message displays, take the
vehicle to be serviced at your dealer.
Brake Burnishing
For vehicles equipped with front
Brembo brake systems:
Performance/racing brake pads are
required prior to racing or closed track
driving. Vehicles with option code JE2
have performance brake pads.
New brake pads must be burnished
before racing or other competitive
driving.
These procedures are specific to the
V-Series brake package. This
procedure should not be performed on
other models as damage may result.
Caution
Performing the brake burnish
procedure on a base brake system
can result in brake damage.
Caution
The new vehicle break-in period
should be completed before
performing the brake burnish
procedure, otherwise damage may
occur to the powertrain/engine. See
New Vehicle Break-In 0218.
Caution
Brake fade will occur during this
track burnish procedure and can
cause brake pedal travel and force
to increase. This could extend
stopping distance until the brakes
are fully burnished.
When this procedure is performed as
instructed, it will not damage the
brakes. The brake pads will smoke and
produce an odor. The braking force

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
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212 DRIVING AND OPERATING
{Warning
Wet brakes can cause crashes. They
might not work as well in a quick
stop and could cause pulling to one
side. You could lose control of the
vehicle.
After driving through a large puddle
of water or a car/vehicle wash,
lightly apply the brake pedal until
the brakes work normally.
Flowing or rushing water creates
strong forces. Driving through
flowing water could cause the
vehicle to be carried away. If this
happens, you and other vehicle
occupants could drown. Do not
ignore police warnings and be very
cautious about trying to drive
through flowing water.
Hydroplaning
Hydroplaning is dangerous. Water can
build up under the vehicle's tires so
they actually ride on the water. This
can happen if the road is wet enoughand you are going fast enough. When
the vehicle is hydroplaning, it has
little or no contact with the road.
There is no hard and fast rule about
hydroplaning. The best advice is to
slow down when the road is wet.
Other Rainy Weather Tips
Besides slowing down, other wet
weather driving tips include:
.Allow extra following distance.
.Pass with caution.
.Keep windshield wiping equipment
in good shape.
.Keep the windshield washer fluid
reservoir filled.
.Have good tires with proper tread
depth. See
Tires0339.
.Turn off cruise control.
Hill and Mountain Roads
Driving on steep hills or through
mountains is different than driving on
flat or rolling terrain. Tips include:
.Keep the vehicle serviced and in
good shape.
.Check all fluid levels and brakes,
tires, cooling system, and
transmission.
.Shift to a lower gear when going
down steep or long hills.
{Warning
Using the brakes to slow the vehicle
on a long downhill slope can cause
brake overheating, can reduce brake
performance, and could result in a
loss of braking. Shift the
transmission to a lower gear to let
the engine assist the brakes on a
steep downhill slope.
{Warning
Coasting downhill in N (Neutral) or
with the ignition off is dangerous.
This can cause overheating of the
brakes and loss of steering assist.
Always have the engine running
and the vehicle in gear.
.Drive at speeds that keep the
vehicle in its own lane. Do not
swing wide or cross the center line.