Page 261 of 524

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
260 Driving and Operating
Caution (Continued)
.Check engine oil with
every refueling and add if
necessary. Oil and fuel
consumption may be
higher than normal during
the first
2 414 km (1,500 mi).
.To break in new tires,
drive at moderate speeds
and avoid hard cornering
for the first
322 km (200 mi). New tires
do not have maximum
traction and may tend
to slip.
.New brake linings also
need a break-in period.
Avoid making hard stops
during the first
322 km (200 mi). This is
recommended every time
brake linings are replaced.
.Should the vehicle be used
for racing or competitive
driving (after break-in), the
rear axle lubricant must be
replaced beforehand.See Track Events and
Competitive Driving (V-Series
and V-Series Blackwing)
0238.
On new vehicles, the various
mechanical and electrical
systems experience a
“break-in” period during the
first 6,400 km (4,000 miles) of
routine driving. As the vehicle
is driven, the mechanical
systems adjust to provide
optimal fuel economy and
transmission shift
performance.
Electrical systems will adapt
and calibrate during the
break-in period. A one-time
occurrence of clicks and
similar vehicle noises is normal
during this process.
Normal driving charges the
vehicle’s battery to achieve
the best operation of the
vehicle, including fuel
economy.
Composite Materials
This vehicle may be equipped
with parts containing carbon
fiber, sheet-molding
compound, or other composite
materials. Dealer-installed
accessories may also contain
composite materials.
{Warning
Exposed edges of parts
containing carbon fiber and
other composite materials
can be sharp. Contact with
these parts could result in
injury. Use caution to avoid
contacting these parts,
including when washing the
vehicle. If the parts are
damaged, replace the parts
promptly with replacements
from your dealer.
Page 497 of 524

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/5/22
496 Customer Information
Reporting Safety
Defects to General
Motors
In addition to notifying NHTSA
(or Transport Canada) in a
situation like this, notify
General Motors.
In the U.S., call
1-800-458-8006, or write:
Cadillac Customer Assistance
Center
Cadillac Motor Car Division
P.O. Box 33169
Detroit, MI 48232-5169
In Canada, call
1-888-446-2000, or write:
Canadian Cadillac Customer
Care Centre
General Motors of Canada
Company
500 Wentworth Street W
Oshawa, ON L1J 0C5
In Mexico, call 800-466-0805
or 800-212-234-5522.In other Central America and
Caribbean Countries, call
52-555-901-2369.Vehicle Data
Recording and
Privacy
The vehicle has a number of
computers that record
information about the vehicle’s
performance and how it is
driven or used. For example,
the vehicle uses computer
modules to monitor and
control engine and
transmission performance, to
monitor the conditions for
airbag deployment and deploy
them in a crash, and,
if equipped, to provide antilock
braking to help the driver
control the vehicle. These
modules may store data to
help the dealer technician
service the vehicle or to help
GM improve safety or
features. Some modules may
also store data about how thevehicle is operated, such as
rate of fuel consumption or
average speed. These
modules may retain personal
preferences, such as radio
presets, seat positions, and
temperature settings.
Cybersecurity
GM collects information about
the use of your vehicle
including operational and
safety related information. We
collect this information to
provide, evaluate, improve, and
troubleshoot our products and
services and to develop new
products and services. The
protection of vehicle
electronics systems and
customer data from
unauthorized outside
electronic access or control is
important to GM. GM
maintains appropriate security
standards, practices,
guidelines and controls aimed
at defending the vehicle and
the vehicle service ecosystem
against unauthorized
Page 509 of 524

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
508 Connected Services
vehicles, Wi-Fi can also be
managed from the Wi-Fi
Hotspot menu.
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 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
Assistance.
.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.