2019 CADILLAC CT6 engine

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
TECHNICAL DATA 399
Engine Specifications
EngineVIN CodeTransmission Spark Plug Gap
2.0L L4 Engine KAutomatic0.75–0.90 mm (0.030–0.035 in)
3.0L V6 Engine 6Automatic 0.65–0.75 mm (0.26–0.030 in)
3.6L V6 Engine SAutomatic0.80–0.90 mm (0.031–0.035 in)
4.2L V8 Engine JAutomatic 0.74–0.75 mm (0.029–0.030 in)
Engine Drive Belt Routing
2.0L L4 Engine
3.0L V6 Engine3.6L V6 Engine

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
400 TECHNICAL DATA
4.2L V8 Engine

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
410 CUSTOMER INFORMATION
Managing the Vehicle Damage
Repair Process
In the event that the vehicle requires
damage repairs, GM recommends that
you take an active role in its repair.
If you have a pre-determined repair
facility of choice, take the vehicle
there, or have it towed there. Specify
to the facility that any required
replacement collision parts be original
equipment parts, either new Genuine
GM parts or recycled original GM
parts. Remember, recycled parts will
not be covered by the GM vehicle
warranty.
Insurance pays the bill for the repair,
but you must live with the repair.
Depending on your policy limits, your
insurance company may initially value
the repair using aftermarket parts.
Discuss this with the repair
professional, and insist on Genuine
GM parts. Remember, if the vehicle is
leased, you may be obligated to have
the vehicle repaired with Genuine GM
parts, even if your insurance coverage
does not pay the full cost.If another party's insurance company
is paying for the repairs, you are not
obligated to accept a repair valuation
based on that insurance company's
collision policy repair limits, as you
have no contractual limits with that
company. In such cases, you can have
control of the repair and parts choices
as long as the cost stays within
reasonable limits.
Publication Ordering
Information
Service Manuals
Service manuals have the diagnosis
and repair information on the engine,
transmission, axle, suspension, brakes,
electrical system, steering system,
body, etc.
Customer Literature
Owner’s manuals are written
specifically for owners and are
intended to provide basic operational
information about the vehicle. The
owner’s manual includes the
Maintenance Schedule for all models.Customer literature publications
available for purchase include owner’s
manuals, warranty manuals,
infotainment manuals, and portfolios.
Portfolios include an owner’s manual,
warranty manual, infotainment
manual, if applicable, and zip lock bag
or pouch.
Current and Past Models
Service manuals and customer
literature are available for many
current and past model year GM
vehicles.
To order, call 1-800-551-4123
Monday–Friday, 8:00 a.m.–6:00 p.m.
eastern time
For credit card orders only (VISA,
MasterCard, or Discover), see Helm,
Inc. at: www.helminc.com.
To order by mail, write to:
Helm, Incorporated
Attention: Customer Service
47911 Halyard Drive
Plymouth, MI 48170
Make checks payable in U.S. funds.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
412 CUSTOMER INFORMATION
or write to:
Transport Canada
Motor Vehicle Safety Directorate
Defect Investigations and Recalls
Division
80 Noel Street
Gatineau
,QC J8Z 0A1
Reporting Safety Defects
to General Motors
In addition to notifying NHTSA (or
Transport Canada) in a situation like
this, notify General Motors.
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, Mail Code: CA1-163-005
General Motors of Canada Company
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7
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. 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. 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.
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-likesituations, 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,
. How fast the vehicle was traveling.
These data can help provide a better
understanding of the circumstances in
which crashes and injuries occur.
Note
EDR data are recorded by your vehicle
only if a non-trivial crash situation
occurs; no data are recorded by the
EDR under normal driving conditions

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
416 ONSTAR
Security
If equipped, OnStar provides these
services:
.With Stolen Vehicle Assistance,
OnStar Advisors can use GPS to
pinpoint the vehicle and help
authorities quickly recover it.
. With Remote Ignition Block,
if equipped, OnStar can block the
engine from being restarted.
. With Stolen Vehicle Slowdown,
if equipped, OnStar can work with
law enforcement to gradually slow
the vehicle down.
Theft Alarm Notification
If equipped, if the doors are locked
and the vehicle alarm sounds, a
notification by text, e-mail, or phone
call will be sent. If the vehicle is
stolen, an OnStar Advisor can work
with authorities to recover the vehicle.
OnStar Additional
Information
In-Vehicle Audio Messages
Audio messages may play important
information at the following times:
.Prior to vehicle purchase. Press
Q
to set up an account.
. After change in ownership and at
90 days.
Transferring Service
PressQto request account transfer
eligibility information. The Advisor
can cancel or change account
information.
Selling/Transferring the Vehicle
Call 1-888-4ONSTAR (1-888-466-7827)
immediately to terminate your OnStar
or connected services if the vehicle is
disposed of, sold, transferred, or if the
lease ends.
Reactivation for Subsequent
Owners
PressQand follow the prompts to
speak to an Advisor as soon as
possible. The Advisor will update
vehicle records and explain OnStar or
connected service options.
How OnStar Service Works
Automatic Crash Response,
Emergency Services, Crisis Assist,
Stolen Vehicle Assistance, Remote
Services, Roadside Assistance, and
Hands-Free Calling are available on
most vehicles. Not all OnStar services
are available everywhere or on all
vehicles. For more information, a full
description of OnStar services, system
limitations, and OnStar User Terms,
Privacy Statement, and Software
Terms:
. Call 1-888-4ONSTAR
(1-888-466-7827).
. See www.onstar.com (U.S.).
. See www.onstar.ca (Canada).
. Call TTY 1-877-248-2080.
. Press
Qto speak with an Advisor.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
426 INDEX
IndexA
Accessories and Modifications . . . . . 290
Accessory Power . . . . . . . . . . . . . . . . . . . . 206
Active Fuel Management . . . . . . . . . . . 208
Adaptive Cruise Control . . . . . . . . . . . . 229
Add-On Electrical Equipment . . . . . . 287
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 416
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 389
Adjustments Lumbar, Front Seats . . . . . . . . . . . . . . . . 65
Lumbar, Rear Seats . . . . . . . . . . . . . . . . . 74
Thigh Support . . . . . . . . . . . . . . . . . . . . . . 66
Air Cleaner/Filter, Engine . . . . . . . . . . 304
Air Conditioning . . . . . . . . . . . . . . .175, 180
Air Filter Life System . . . . . . . . . . . . . . . . . . . . . . . . 304
Air Filter, Passenger
Compartment . . . . . . . . . . . . . . . . . . . . . 187
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
How Does an Airbag Restrain? . . . . . 88
Passenger Sensing System . . . . . . . . . 90
What Makes an Airbag Inflate? . . . . 88
What Will You See after anAirbag Inflates? . . . . . . . . . . . . . . . . . . . 88 Airbag System (cont'd)
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Where Are the Airbags? . . . . . . . . . . . . 85
Airbags Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Passenger Status Indicator . . . . . . . 138
Readiness Light . . . . . . . . . . . . . . . . . . . 138
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
System Check . . . . . . . . . . . . . . . . . . . . . . . 84
Alarm Vehicle Security . . . . . . . . . . . . . . . . . . . . . 49
Alert Lane Change . . . . . . . . . . . . . . . . . . . . . . 271
Rear Pedestrian . . . . . . . . . . . . . . . . . . . 260
Side Blind Zone (SBZA) . . . . . . . . . . 270
All-Season Tires . . . . . . . . . . . . . . . . . . . . . 340
All-Wheel Drive . . . . . . . . . . . . . . . .216, 317
Antilock Brake System (ABS) . . . . . . 217 Warning Light . . . . . . . . . . . . . . . . . . . . 143
Appearance Care
Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 372
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 376
Armrest Storage . . . . . . . . . . . . . . . . . . . . . 115
Ashtrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Assistance Systems for Driving . . . . 262

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
INDEX 427
Assistance Systems for Parkingand Backing . . . . . . . . . . . . . . . . . . . . . . . 253
Auto Stop Stop/Start System . . . . . . . . . . . . . . . . 203
Automatic Climate Control System . . . . . 175, 180
Dimming Mirrors . . . . . . . . . . . . . . . . . . . 53
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Forward Braking . . . . . . . . . . . . . . . . . . 264
Headlamp System . . . . . . . . . . . . . . . . 169
Transmission . . . . . . . . . . . . . . . . . . . . . . 210
Transmission Fluid . . . . . . . . . . . . . . . 303
Vehicle Hold Light . . . . . . . . . . . . . . . . 144
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . . . . . 215
Automatic Vehicle Hold (AVH) . . . . 220
B
Battery
Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Load Management . . . . . . . . . . . . . . . . 173
Power Protection . . . . . . . . . . . . . . . . . . 173
Battery - North America . . . . . .316, 367
Blade Replacement, Wiper . . . . . . . . . 319
Brake Parking, Electric . . . . . . . . . . . . . . . . . . 218
System Warning Light . . . . . . . 141, 142 Brake Pad Life System . . . . . . . . . . . . . . 315
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314
Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Pad Life System . . . . . . . . . . . . . . . . . . . 315
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Automatic Forward . . . . . . . . . . . . . . . 264
Braking System Front Pedestrian (FPB) . . . . . . . . . . . 266
Break-In, New Vehicle . . . . . . . . . . . . . . 200
Bulb Replacement
Headlamp Aiming . . . . . . . . . . . . . . . . 321
Headlamps . . . . . . . . . . . . . . . . . . . . . . . . 321
Buying New Tires . . . . . . . . . . . . . . . . . . . 355
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . 122
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . 290
California Proposition 65 Warning . . . . . . . . . . . . .289, 316, 367, Back Cover
Canadian Vehicle Owners . . . . . . . . . . . . . 2
Capacities and Specifications . . . . . . 397
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . . . . . 209 Carbon Monoxide (cont'd)
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Winter Driving . . . . . . . . . . . . . . . . . . . . 195
Cargo
Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . . . 117
Caution, Danger, and Warning . . . . . . . . 2
Center Console Storage . . . . . . . . . . . . . 116
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . 359
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Charging System Light . . . . . . . . . . . . . 139
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . 139
Child Restraints Infants and Young Children . . . . . . . . 97
Lower Anchors and Tethersfor Children . . . . . . . . . . . . . . . . . . . . . . 102
Older Children . . . . . . . . . . . . . . . . . . . . . . 96
Securing . . . . . . . . . . . . . . . . . . . . . . 108, 111
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Cigarette Lighter . . . . . . . . . . . . . . . . . . . . 125
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . 322
Cleaning Exterior Care . . . . . . . . . . . . . . . . . . . . . . 372
Interior Care . . . . . . . . . . . . . . . . . . . . . . 376
Climate Control Systems Automatic . . . . . . . . . . . . . . . . . . . . 175, 180

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
428 INDEX
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Cluster, Instrument . . . . . . . . . . . .127, 130
Collision Damage Repair . . . . . . . . . . . 408
Compact Spare Tire . . . . . . . . . . . . . . . . . 366
CompartmentsStorage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Connected Services
Connections . . . . . . . . . . . . . . . . . . . . . . . 423
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . 425
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . 422
Connections Connected Services . . . . . . . . . . . . . . . 423
Control Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Control of a Vehicle . . . . . . . . . . . . . . . . 191
Convenience Net . . . . . . . . . . . . . . . . . . . . 117
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . 52
Coolant Engine Temperature Gauge . . . . . . 135
Engine Temperature Warning
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Cooling . . . . . . . . . . . . . . . . . . . . . . . . .175, 180
Cooling System . . . . . . . . . . . . . . . . . . . . . 307
Cornering Lamps . . . . . . . . . . . . . . . . . . . 170
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . 171 Courtesy Transportation
Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 407
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . 227 Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Cruise Control, Adaptive . . . . . . . . . . . 229
Cruise Control, Super . . . . . . . . . . . . . . . 237
Cupholders . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Customer Assistance . . . . . . . . . . . . . . . 403 Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 403
Text Telephone (TTY) Users . . . . . 403
Customer Information
Publications OrderingInformation . . . . . . . . . . . . . . . . . . . . . . 410
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 401
D
Damage Repair, Collision . . . . . . . . . . . 408
Danger, Warning, and Caution . . . . . . . . 2
Data CollectionInfotainment System . . . . . . . . . . . . . 413
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 413
Data Recorders, Event . . . . . . . . . . . . . . 412
Daytime Running Lamps (DRL) . . . 168
Defensive Driving . . . . . . . . . . . . . . . . . . . 191
Delayed Locking . . . . . . . . . . . . . . . . . . . . . 40
Diagnostics Connected Services . . . . . . . . . . . . . . . 425 Distracted Driving . . . . . . . . . . . . . . . . . . 190
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . 171
Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . . 149
Delayed Locking . . . . . . . . . . . . . . . . . . . . 40
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . . 40
Rear Seat Pass-Through . . . . . . . . . . . . 75
Drive Belt Routing, Engine . . . . . . . . . 399
Drive Systems All-Wheel Drive . . . . . . . . . . . . . . 216, 317
Driver Assistance Systems . . . . . . . . . 252
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . . . . . . 150
Driver Mode Control . . . . . . . . . . . . . . . . 222
Driver Mode Control Light . . . . . . . . . 146
Driving Assistance Systems . . . . . . . . . . . . . . . 262
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . . . . . 281
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
For Better Fuel Economy . . . . . . . . . . . 27
Hill and Mountain Roads . . . . . . . . 194
If the Vehicle is Stuck . . . . . . . . . . . . 196
Loss of Control . . . . . . . . . . . . . . . . . . . . 193
Off-Road Recovery . . . . . . . . . . . . . . . . 192
Track Events and Competitive . . . 193