service CADILLAC CT6 2019 Owner's Manual

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
ContentsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . 2
In Brief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Keys, Doors, and Windows . . . . . . . . . 28
Seats and Restraints . . . . . . . . . . . . . . . 62
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Instruments and Controls . . . . . . . . 118
Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Infotainment System . . . . . . . . . . . . . 174
Climate Controls . . . . . . . . . . . . . . . . . . 175
Driving and Operating . . . . . . . . . . . . 189
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . 288
Service and Maintenance . . . . . . . . . 381
Technical Data . . . . . . . . . . . . . . . . . . . . 396
Customer Information . . . . . . . . . . . . 401
Reporting Safety Defects . . . . . . . . . 411
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414
Connected Services . . . . . . . . . . . . . . . 422
Index . . . . . . . . . . . . . . . . . . . . . . . . 426

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
2 INTRODUCTION
Introduction
The names, logos, emblems, slogans,
vehicle model names, and vehicle
body designs appearing in this manual
including, but not limited to, GM, the
GM logo, CADILLAC, the CADILLAC
Emblem, and CT6are trademarks and/
or service marks of General Motors
LLC, its subsidiaries, affiliates,
or licensors.
For vehicles first sold in Canada,
substitute the name “General Motors
of Canada Company ”for Cadillac
Motor Car Division wherever it
appears in this manual. This manual describes features that
may or may not be on the vehicle
because of optional equipment that
was not purchased on the vehicle,
model variants, country specifications,
features/applications that may not be
available in your region, or changes
subsequent to the printing of this
owner’s manual.
Refer to the purchase documentation
relating to your specific vehicle to
confirm the features.
Keep this manual in the vehicle for
quick reference.
Canadian Vehicle Owners
A French language manual can be
obtained from your dealer, at
www.helminc.com, or from:
Propriétaires Canadiens
On peut obtenir un exemplaire de ce
guide en français auprès du
concessionnaire ou à l'adresse
suivante:Helm, Incorporated
Attention: Customer Service
47911 Halyard Drive
Plymouth, MI 48170
USA
Using this Manual
To quickly locate information about
the vehicle, use the Index in the back
of the manual. It is an alphabetical
list of what is in the manual and the
page number where it can be found.
Danger, Warning, and
Caution
Warning messages found on vehicle
labels and in this manual describe
hazards and what to do to avoid or
reduce them.
{Danger
Danger indicates a hazard with a
high level of risk which will result
in serious injury or death.
Litho in U.S.A.
Part No. 84714566 B Second Printing©2019 General Motors LLC. All Rights Reserved.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
INTRODUCTION 3
{Warning
Warning indicates a hazard that
could result in injury or death.
Caution
Caution indicates a hazard that
could result in property or vehicle
damage.
A circle with a slash through it is a
safety symbol which means“Do Not,”
“Do not do this,” or“Do not let this
happen.”
Symbols
The vehicle has components and
labels that use symbols instead of
text. Symbols are shown along with the text describing the operation or
information relating to a specific
component, control, message, gauge,
or indicator.
M:
Shown when the owner’s manual
has additional instructions or
information.
*: Shown when the service manual
has additional instructions or
information.
0: Shown when there is more
information on another page —
“see page.”
Vehicle Symbol Chart
Here are some additional symbols that
may be found on the vehicle and what
they mean. See the features in this
manual for information.
u: Air Conditioning System
G:Air Conditioning Refrigerant Oil
9:Airbag Readiness Light
!:Antilock Brake System (ABS)
$:Brake System Warning Light
9:Dispose of Used Components
Properly
P: Do Not Apply High Pressure
Water
B: Engine Coolant Temperature
g: First Responder
_:Flame/Fire Prohibited
H: Flammable
[:Forward Collision Alert
R: Fuse Block Cover Lock Location
+:Fuses
_:High Voltage
j: ISOFIX/LATCH System Child
Restraints
Q: Keep Fuse Block Covers Properly
Installed
|: Lane Change Alert
@:Lane Departure Warning
A:Lane Keep Assist
*:Malfunction Indicator Lamp
::Oil Pressure
X:Park Assist
~:Pedestrian Ahead Indicator
O:Power

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
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IN BRIEF 5
In Brief
Instrument Panel
Instrument Panel Overview . . . . . . . . . 6
Initial Drive Information
Initial Drive Information . . . . . . . . . . . 8
Stop/Start System . . . . . . . . . . . . . . . . . . . 8
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Remote Vehicle Start . . . . . . . . . . . . . . . 9
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Seat Adjustment . . . . . . . . . . . . . . . . . . . 11
Memory Features . . . . . . . . . . . . . . . . . . 12
Second Row Seats . . . . . . . . . . . . . . . . . 12
Heated and Ventilated Seats . . . . . . 13
Head Restraint Adjustment . . . . . . . 13
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Passenger Sensing System . . . . . . . . 14
Mirror Adjustment . . . . . . . . . . . . . . . . 14
Steering Wheel Adjustment . . . . . . . 15
Interior Lighting . . . . . . . . . . . . . . . . . . . 15
Exterior Lighting . . . . . . . . . . . . . . . . . . . 16
Windshield Wiper/Washer . . . . . . . . 16
Climate Controls . . . . . . . . . . . . . . . . . . . 18
Transmission . . . . . . . . . . . . . . . . . . . . . . . 19
Vehicle Features
Infotainment System . . . . . . . . . . . . . . 19
Steering Wheel Controls . . . . . . . . . . 19
Cruise Control . . . . . . . . . . . . . . . . . . . . . 19
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . . . . . 20
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Night Vision System . . . . . . . . . . . . . . . 20
Forward Automatic Braking (FAB) . . . . . . . . . . . . . . . . . . . . 21
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Lane Keep Assist (LKA) . . . . . . . . . . . 21
Lane Change Alert (LCA) . . . . . . . . . . 21
Surround Vision . . . . . . . . . . . . . . . . . . . 21
Rear Vision Camera (RVC) . . . . . . . . 22
Rear Cross Traffic Alert (RCTA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . 22
Automatic Parking Assist (APA) . . . . . . . . . . . . . . . . . . . . . . 22
Reverse Automatic Braking (RAB) . . . . . . . . . . . . . . . . . . . . 22
Rear Pedestrian Alert . . . . . . . . . . . . . . 23
Surround Vision Recorder . . . . . . . . . 23
Power Outlets . . . . . . . . . . . . . . . . . . . . . . 23
Universal Remote System . . . . . . . . . 23
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Performance and Maintenance
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . . . . 24
Tire Pressure Monitor . . . . . . . . . . . . . 25
Fuel (2.0L L4 Turbo Engine) . . . . . . 25
Fuel (3.0L Twin Turbo V6 and 4.2L Twin Turbo V8 Engines) . . . . . . . . . 26
Fuel (3.6L V6 Engine) . . . . . . . . . . . . . 26
E85 or FlexFuel . . . . . . . . . . . . . . . . . . . . 26
Engine Oil Life System . . . . . . . . . . . . 26
Driving for Better Fuel Economy . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Roadside Service . . . . . . . . . . . . . . . . . . . 27

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
12 IN BRIEF
To adjust the seatback:
.Tilt the top of the control
rearward to recline.
. Tilt the top of the control forward
to raise.
See Reclining Seatbacks 067.
Memory Features
Platinum Driver Seat Shown,
Passenger Seat Similar
If equipped, memory seats allow two
drivers to save and recall their unique
seat positions for driving the vehicle,
and a shared exit position for getting
out of the vehicle. Other feature positions may also be saved, such as
power mirrors and power steering
wheel, if equipped. Memory positions
are linked to RKE transmitter 1 or 2
for automatic memory recalls.
Before saving, adjust all available
memory feature positions. Turn the
ignition on and then press and release
SET; a beep will sound. Then
immediately press and hold 1, 2,
or
B(Exit) until two beeps sound.
To manually recall these positions,
press and hold 1, 2, or
Buntil the
saved position is reached.
When Seat Entry Memory is enabled
in vehicle personalization, positions
previously saved to memory buttons
1 and 2 are recalled when the ignition
is changed from off to on or ACC/
ACCESSORY.
When Seat Exit Memory is enabled in
vehicle personalization, the feature
automatically recalls the previously
saved exit position when exiting the
vehicle. Memory adjustments may not be
available upon delivery or after service
until steps in
“Saving Memory
Positions” section are performed. See
Memory Seats 067.
Second Row Seats
If equipped, the armrest may have
seat adjustment controls.
1. Seatback Display and Lumbar
Adjustment Control
2. Power Seat Adjustment
3. Power Seat Adjustment
4. Massage
See Rear Seats 072.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
IN BRIEF 27
2. Press and hold SEL to clear theCHANGE ENGINE OIL SOON
message and reset the oil life
at 100%.
Be careful not to reset the oil life
display accidentally at any time
other than after the oil is
changed. It cannot be reset
accurately until the next oil
change.
The oil life system can also be reset as
follows: 1. Using the DIC buttons, display REMAINING OIL LIFE on the
DIC. See Driver Information Center
(DIC) 0150.
2. Fully press and release the accelerator pedal three times
within five seconds.
If the CHANGE ENGINE OIL
SOON message is not on, the
system is reset.
See Engine Oil Life System 0302.Driving for Better Fuel
Economy
Driving habits can affect fuel mileage.
Here are some driving tips to get the
best fuel economy possible:
.
Set the climate controls to the
desired temperature after the
engine is started, or turn them off
when not required.
. Avoid fast starts and accelerate
smoothly.
. Brake gradually and avoid abrupt
stops.
. Avoid idling the engine for long
periods of time.
. When road and weather
conditions are appropriate, use
cruise control.
. Always follow posted speed limits
or drive more slowly when
conditions require. .
Keep vehicle tires properly
inflated.
. Combine several trips into a
single trip.
. Replace the vehicle's tires with the
same TPC Spec number molded
into the tire's sidewall near
the size.
. Follow recommended scheduled
maintenance.
Roadside Service
U.S.: 1-800-224-1400
Canada: 1-800-882-1112
TTY Users (U.S. Only): 1-888-889-2438
New Cadillac owners are automatically
enrolled in the Roadside Service
Program.
See Roadside Service 0405.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
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KEYS, DOORS, AND WINDOWS 29
This key, inside the Remote Keyless
Entry (RKE) transmitter, is used for
the driver door.To remove the key, press the button
on the side of the RKE transmitter
near the bottom, and pull the key out.
Never pull the key out without
pressing the button.
See your dealer if a new key is needed.
Contact Roadside Service if locked out
of the vehicle. See
Roadside Service
0 405.
With an active OnStar or connected
service plan, an OnStar Advisor may
remotely unlock the vehicle. See
OnStar Overview 0414.
Remote Keyless Entry
(RKE) System
See Radio Frequency Statement 0411.
If there is a decrease in the Remote
Keyless Entry (RKE) operating range:
. Check the distance. The
transmitter may be too far from
the vehicle.
. Check the location. Other vehicles
or objects may be blocking the
signal. .
Check the transmitter's battery.
See “Battery Replacement ”later in
this section.
. If the transmitter is still not
working correctly, see your dealer
or a qualified technician for
service.
Remote Keyless Entry
(RKE) System Operation
The Keyless Access system allows for
vehicle entry when the Remote
Keyless Entry (RKE) transmitter is
within 1 m (3 ft). See “Keyless Access
Operation ”later in this section.
The RKE transmitter may work up to
60 m (197 ft) away from the vehicle.
Other conditions can impact the
performance of the transmitter. See
Remote Keyless Entry (RKE) System
0 29.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
KEYS, DOORS, AND WINDOWS 51
With the vehicle turned off, presso
in the front overhead console. The
indicator light will come on
momentarily, indicating that these
sensors have been disabled for the
next alarm system arming cycle.
Immobilizer
SeeRadio Frequency Statement 0411.
Immobilizer Operation
This vehicle has a passive
theft-deterrent system.
The system does not have to be
manually armed or disarmed. The vehicle is automatically
immobilized when the vehicle is
turned off.
The immobilization system is
disarmed when the vehicle is started
or the ignition is in ACC/ACCESSORY
and a valid transmitter is present in
the vehicle.
The security light, in the instrument
cluster, comes on if there is a problem
with arming or disarming the
theft-deterrent system.
The system has one or more RKE
transmitters matched to an
immobilizer control unit in the
vehicle. Only a correctly matched RKE
transmitter will start the vehicle.
If the transmitter is ever damaged,
you may not be able to start your
vehicle.
When trying to start the vehicle, the
security light may come on briefly
when the ignition is turned on.
If the engine does not start and the
security light stays on, there is a
problem with the system. Turn the
ignition off and try again.
If the vehicle will not change ignition
modes (ACC/ACCESSORY, on, off), and
the RKE transmitter appears to be
undamaged, try another transmitter.
Or, you may try placing the
transmitter in the transmitter pocket
located in the center console. See
Remote Keyless Entry (RKE) System
Operation
029.
If the ignition modes will not change
with the other transmitter or with the
transmitter in the transmitter pocket,
your vehicle needs service. If the
ignition does change modes, the first
transmitter may be faulty. See your
dealer.
It is possible for the immobilizer
system to learn new or replacement
RKE transmitters. Up to eight
transmitters can be programmed for
the vehicle. To program additional

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
56 KEYS, DOORS, AND WINDOWS
Troubleshooting
See your dealer for service if a blue
screen and
3are displayed in the
mirror, and the display shuts off. Also,
push the tab as indicated to return to
the automatic dimming mode.
The Rear Camera Mirror may not work
properly or display a clear image if:
. There is glare from the sun or
headlamps. This may obstruct
objects from view. If needed, push
the tab to turn off the display.
.
Dirt, snow, or other debris blocks
the camera lens. Clean the lens
with a soft damp cloth, or if
equipped, with the Rear Camera
Washer. See Windshield Wiper/
Washer 0120.
. The camera’s mounting on the
vehicle has been damaged, and/or
the position or the mounting angle
of the camera has changed.
Windows
{Warning
Never leave a child, a helpless adult,
or a pet alone in a vehicle,
especially with the windows closed
in warm or hot weather. They can
be overcome by the extreme heat
and suffer permanent injuries or
even death from heat stroke.
The vehicle aerodynamics are
designed to improve fuel economy
performance. This may result in a

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
68 SEATS AND RESTRAINTS
If equipped, memory seats allow two
drivers to save and recall their unique
seat positions for driving the vehicle,
and a shared exit position for getting
out of the vehicle. Other feature
positions may also be saved, such as
power mirrors and power steering
wheel, if equipped. Memory positions
are linked to RKE transmitter 1 or 2
for automatic memory recalls.
Before saving, adjust all available
memory feature positions. Turn the
ignition on and then press and release
SET; a beep will sound. Then
immediately press and hold 1, 2,
or
B(Exit) until two beeps sound.
To manually recall these positions,
press and hold 1, 2, or
Buntil the
saved position is reached. Follow the
instructions under “Saving Memory
Positions.”
The vehicle identifies the current
driver’s RKE transmitter number (1–
8). See Remote Keyless Entry (RKE)
System Operation 029. Only RKE
transmitters 1 and 2 can be used for
automatic memory recalls. A Driver
Information Center (DIC) welcome
message indicating the transmitter number may display for the first few
ignition cycles following a transmitter
change. For Seat Entry Memory to
work properly, save the positions to
the memory button (1 or 2) matching
the RKE transmitter number displayed
in the DIC welcome message. Carry
the linked RKE transmitter when
entering the vehicle.
Memory adjustments may not be
available upon delivery or after service
until steps in
“Saving Memory
Positions” section are performed.
Vehicle Personalization Settings
. To have the Seat Entry Memory
movement begin when the vehicle
is started, select the Settings
menu, then Vehicle, then Seating
Position, and then Seat Entry
Memory. Select On or Off. See
“Seat Entry Memory” later in this
section.
. Seat Exit Memory movement
begins when the ignition is turned
off and the driver door is opened,
or when the ignition is turned off
with the driver door already
opened, select the Settings menu, then Vehicle, then Seating
Position, and then Seat Exit
Memory. Select On or Off. See
“Seat Exit Memory”
later in this
section.
. See Vehicle Personalization 0157
for additional setting information.
Identifying Driver Number
To identify the driver number: 1. Start the vehicle with a different key or RKE transmitter. The DIC
should display the driver
number; 1 or 2. Turn the ignition
off and remove the key or RKE
transmitter from the vehicle.
2. Start the vehicle with the initial key or RKE transmitter. The DIC
should display the other driver
number not shown in Step 1.
Saving Memory Positions
Read these instructions completely
before saving memory positions.
To save preferred driving positions
1 and 2: 1. Turn the ignition on or to ACC/ ACCESSORY.