2021 CADILLAC CT5 fuel

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
398 TECHNICAL DATA
ApplicationCapacities
Metric English
Engine Oil with Filter
I2.0L L4 Engine 5.0 L
5.3 qt
I3.0L V6 Engine RWD 5.7 L
6.0 qt
I3.0L V6 Engine AWD 6.2 L
6.5 qt
Front Axle 0.40 L0.42 qt
Rear Axle
IOpen Differential - Small 0.75 L
0.79 qt
IOpen Differential - Large 1.0 L
1.0 qt
IMechanical Limited Slip 1.0 L
1.0 qt
IElectronic Limited Slip 1.5 L
1.5 qt
Fuel Tank 66.0 L17.5 gal

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
CUSTOMER INFORMATION 405
Roadside Service
U.S.: 1-800-224-1400.
Canada: 1-800-882-1112.
Text Telephone (TTY) Users (U.S.
Only): 1-888-889-2438.
Service is available 24 hours a day,
365 days a year.
Calling for Service
When calling Roadside Service, have
the following information ready:
.Your name, home address, and
home telephone number
.Telephone number of your location
.Location of the vehicle
.Model, year, color, and license plate
number of the vehicle
.Odometer reading, Vehicle
Identification Number (VIN), and
delivery date of the vehicle
.Description of the problem
Coverage
Services are provided for the duration
of the vehicle’s powertrain warranty.In the U.S., anyone driving the vehicle
is covered. In Canada, a person driving
the vehicle without permission from
the owner is not covered.
Roadside Service is not a part of the
New Vehicle Limited Warranty.
General Motors North America and
Cadillac reserve the right to make any
changes or discontinue the Roadside
Service program at any time without
notification.
General Motors North America and
Cadillac reserve the right to limit
services or payment to an owner or
driver if they decide the claims are
made too often, or the same type of
claim is made many times.
Cadillac Owner Privileges
™
.Emergency Fuel Delivery: Delivery
of enough fuel for the vehicle to get
to the nearest service station.
.Lock-Out Service: Service to unlock
the vehicle if you are locked out.
A remote unlock may be available if
you have OnStar. For security
reasons, the driver must present
identification before this service is
given.
.Emergency Tow from a Public
Road or Highway: Tow to the
nearest Cadillac dealer for warranty
service, or if the vehicle was in a
crash and cannot be driven.
Assistance is not given when the
vehicle is stuck in the sand, mud,
or snow.
.Flat Tire Change: Service to change
a flat tire with a spare tire. The
spare tire, if equipped, must be in
good condition and properly
inflated. It is your responsibility for
the repair or replacement of the tire
if it is not covered by the warranty.
.Battery Jump Start: Service to
jump start a dead battery.
.Trip Interruption Benefits and
Service: If your trip is interrupted
due to a warranty failure, incidental
expenses may be reimbursed during
the Powertrain warranty period.
Items considered are hotel, meals,
and rental car or a vehicle being
delivered back to the customer, up
to 500 miles.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
406 CUSTOMER INFORMATION
Cadillac Technician Roadside
Service (U.S. Only)
Cadillac's exceptional Roadside Service
is more than an auto club or towing
service. It provides every Cadillac
owner in the United States with the
advantage of contacting a Cadillac
advisor and, where available, a
Cadillac trained dealer technician who
can provide on-site service.
A dealer technician will travel to your
location within a 30-mile radius of a
participating Cadillac dealership.
If beyond this radius, we will arrange
to have your car towed to the nearest
Cadillac dealership. Each technician
travels with a specially equipped
service vehicle complete with the
necessary Cadillac parts and tools
required to handle most roadside
repairs.
Services Not Included in
Roadside Service
.Impound towing caused by violation
of any laws
.Legal fines
.Mounting, dismounting, or changing
of snow tires, chains, or other
traction devices
Service is not provided if a vehicle is
in an area that is not accessible to the
service vehicle or is not a regularly
traveled or maintained public road,
which includes ice and winter roads.
Off-road use is not covered.
Services Specific to
Canadian-Purchased Vehicles
.Fuel delivery: Reimbursement is up
to 7 liters. Diesel fuel delivery may
be restricted. Propane and other
fuels are not provided through this
service.
.Lock-Out Service: Vehicle
registration is required.
.Trip Interruption Benefits and
Service: Pre-authorization, original
detailed receipts, and a copy of the
repair orders are required. Once
authorization has been received, the
Roadside Service advisor will help
you make arrangements and explain
how to receive payment. Items
considered are hotel, meals, and rental car or a vehicle being
delivered back to the customer, up
to 800 km.
.Alternative Service:
If assistance
cannot be provided right away, the
Roadside Service advisor may give
you permission to get local
emergency road service. You will
receive payment, up to $100, after
sending the original receipt to
Roadside Service. Mechanical
failures may be covered, however
any cost for parts and labor for
repairs not covered by the warranty
are the owner responsibility.
Scheduling Service
Appointments
When the vehicle requires warranty
service, contact your dealer and
request an appointment. By
scheduling a service appointment and
advising the service consultant of
your transportation needs, your dealer
can help minimize your
inconvenience.
If the vehicle cannot be scheduled
into the service department
immediately, keep driving it until it

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
CUSTOMER INFORMATION 407
can be scheduled for service, unless,
of course, the problem is safety
related. If it is, please call your
dealership, let them know this, and
ask for instructions.
If your dealer requests you to bring
the vehicle for service, you are urged
to do so as early in the work day as
possible to allow for same-day repair.
Courtesy Transportation
Program
To enhance your ownership
experience, we and our participating
dealers are proud to offer Courtesy
Transportation, a customer support
program for vehicles with the
Bumper-to-Bumper (Base Warranty
Coverage period in Canada), extended
powertrain, and/or hybrid-specific
warranties in both the U.S. and
Canada.
Several Courtesy Transportation
options are available to assist in
reducing inconvenience when
warranty repairs are required.Courtesy Transportation is not a part
of the New Vehicle Limited Warranty.
A separate manual entitled
“Limited
Warranty and Owner Assistance
Information ”furnished with each new
vehicle provides detailed warranty
coverage information.
Transportation Options
Warranty service can generally be
completed while you wait. However,
if you are unable to do so, your dealer
may offer the following transportation
options:
Shuttle Service
This includes one-way or round-trip
shuttle service within reasonable time
and distance parameters of your
dealer's area.
Public Transportation or Fuel
Reimbursement
If overnight warranty repairs are
needed, and public transportation is
used, the expense must be supported
by original receipts and within the
maximum amount allowed by GM.
If U.S. customers arrange their own
transportation, limited reimbursement for reasonable fuel expenses may be
available. Claim amounts should
reflect actual costs and be supported
by original receipts. See your dealer
for information.
Courtesy Rental Vehicle
For an overnight warranty repair, the
dealer may provide an available
courtesy rental vehicle or provide for
reimbursement of a rental vehicle.
Reimbursement is limited and must
be supported by original receipts as
well as a signed and completed rental
agreement and meet state/provincial,
local, and rental vehicle provider
requirements. Requirements vary and
may include minimum age
requirements, insurance coverage,
credit card, etc. Additional fees such
as fuel, rental vehicle insurance, taxes,
levies, usage fees, excessive mileage,
or rental usage beyond the completion
of the repair are also your
responsibility.
It may not be possible to provide a
like vehicle as a courtesy rental.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
412 CUSTOMER INFORMATION
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 the vehicle
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
electronic access, detecting possible
malicious activity in related networks,
and responding to suspected
cybersecurity incidents in a timely,
coordinated and effective manner.
Security incidents could impact your
safety or compromise your private
data. To minimize security risks,
please do not connect your vehicle
electronic systems to unauthorized
devices or connect your vehicle to any
unknown or untrusted networks (such
as Bluetooth, WIFI or similartechnology). In the event you suspect
any security incident impacting your
data or the safe operation of your
vehicle, please stop operating your
vehicle and contact your dealer.
Event Data Recorders
This vehicle is equipped with an event
data recorder (EDR). The main
purpose of an EDR is to record, in
certain crash or near crash-like
situations, such as an air bag
deployment or hitting a road obstacle,
data that will assist in understanding
how a vehicle’s systems performed.
The EDR is designed to record data
related to vehicle dynamics and safety
systems for a short period of time,
typically 30 seconds or less. The EDR
in this vehicle is designed to record
such data as:
.How various systems in your
vehicle were operating;
.Whether or not the driver and
passenger safety belts were buckled/
fastened;
.How far (if at all) the driver was
depressing the accelerator and/or
brake pedal; and,

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
CONNECTED SERVICES 421
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 CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
422 INDEX
IndexA
Accessories and Modifications . . . . . 310
Accessory Power . . . . . . . . . . . . . . . . . . . . 229
Active Fuel Management . . . . . . . . . . . 230
Adaptive Cruise Control . . . . . . . . . . . . 251
Add-On Electrical Equipment . . . . . . 307
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 389
Adjustments Lumbar, Front Seats . . . . . . . . . . . . . . . 38
Thigh Support . . . . . . . . . . . . . . . . . . . . . 38
Agreements
Trademarks and License . . . . . . . . . 192
Air Cleaner/Filter, Engine . . . . . . . . . . 320
Air Conditioning . . . . . . . . . . . . . . . . . . . . 202
Air Filter Life System . . . . . . . . . . . . . . . . . . . . . . . . 319
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . . . . . . 206
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
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 . . . . . . . 102
Readiness Light . . . . . . . . . . . . . . . . . . . 102
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
System Check . . . . . . . . . . . . . . . . . . . . . . 54
Alarm Vehicle Security . . . . . . . . . . . . . . . . . . . . 23
Alert Lane Change . . . . . . . . . . . . . . . . . . . . . . 291
Rear Pedestrian . . . . . . . . . . . . . . . . . . . 284
Side Blind Zone (SBZA) . . . . . . . . . . 291
All-Season Tires . . . . . . . . . . . . . . . . . . . . . 342
All-Wheel Drive . . . . . . . . . . . . . . . .237, 331
AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . 147
Antenna
Multi-band . . . . . . . . . . . . . . . . . . . . . . . . 151
Antilock Brake System (ABS) . . . . . . 237
Warning Light . . . . . . . . . . . . . . . . . . . . 106

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
INDEX 425
DoorAjar Light . . . . . . . . . . . . . . . . . . . . . . . . . 113
Delayed Locking . . . . . . . . . . . . . . . . . . . 17
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . 17
Drive Belt Routing, Engine . . . . . . . . . 400
Drive Systems All-Wheel Drive . . . . . . . . . . . . . 237, 331
Driver Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Driver Assistance Systems . . . . . . . . . 275
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . . .113, 116
Driver Mode Control . . . . . . . . . . . . . . . . 242
Driver Mode Control Light . . . . . . . . . 109
Driving Assistance Systems . . . . . . . . . . . . . . . 285
Better Fuel Economy . . . . . . . . . . . . . 209
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . . . . . 301
Competitive . . . . . . . . . . . . . . . . . . . . . . . 247
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Hill and Mountain Roads . . . . . . . . 217
If the Vehicle is Stuck . . . . . . . . . . . . 219
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Loss of Control . . . . . . . . . . . . . . . . . . . . 212
Off-Road Recovery . . . . . . . . . . . . . . . . 212 Driving (cont'd)
Track Events and
Competitive . . . . . . . . . . . . . . . . . . . . . . 213
Vehicle Load Limits . . . . . . . . . . . . . . 219
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . 217
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Dual Automatic Climate
Control System . . . . . . . . . . . . . . . . . . . . 202
E
Electric Brake Boost . . . . . . . . . . . . . . . . 237
Electric Parking Brake . . . . . . . . . . . . . . 238
Electric Parking Brake Light . . . . . . . 106
Electrical Equipment, Add-On . . . . . 307
Electrical SystemEngine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Fuses and Circuit Breakers . . . . . . . 334
Instrument Panel Fuse Block . . . . 337
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . 320
Check Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . . . . . 103 Engine (cont'd)
Compartment Overview . . . . . . . . . . 313
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 100, 101
Coolant Temperature Warning Light . . . . . . . . . . . . . . . . . . . 109
Cooling System . . . . . . . . . . . . . . . . . . . 322
Drive Belt Routing . . . . . . . . . . . . . . . . 400
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Oil Life System . . . . . . . . . . . . . . . . . . . . 318
Oil Pressure Light . . . . . . . . . . . . . . . . . 110
Overheating . . . . . . . . . . . . . . . . . . . . . . . 326
Power Messages . . . . . . . . . . . . . . . . . . 123
Running While Parked . . . . . . . . . . . 231
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Engine Air Filter Life System . . . . . . 319
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . 137
Equipment, Towing . . . . . . . . . . . . . . . . . 306
Event Data Recorders . . . . . . . . . . . . . . 412
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . 138
Extended Parking . . . . . . . . . . . . . . . . . . . 230
Extender, Seat Belt . . . . . . . . . . . . . . . . . . 53
Exterior Lamp Controls . . . . . . . . . . . . 132
Exterior Lamps Off Reminder . . . . . . 134
Exterior Lighting Battery Saver . . . . 139