service CADILLAC CT6 2017 1.G Owners Manual

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
ContentsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . 2
In Brief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Keys, Doors, and Windows . . . . . . . . . 28
Seats and Restraints . . . . . . . . . . . . . . . 55
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Instruments and Controls . . . . . . . . 107
Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Infotainment System . . . . . . . . . . . . . 170
Climate Controls . . . . . . . . . . . . . . . . . . 171
Driving and Operating . . . . . . . . . . . . 184
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . 244
Service and Maintenance . . . . . . . . . 310
Technical Data . . . . . . . . . . . . . . . . . . . . 321
Customer Information . . . . . . . . . . . . 325
Index . . . . . . . . . . . . . . . . . . . . . . . . 327

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
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.
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 manual.
Refer to the purchase documentation
relating to your specific vehicle to
confirm the features.
Keep this manual in the vehicle for
quick reference.
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.
{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.”
Litho in U.S.A.
Part No. 23229105_US©2016 General Motors LLC. All Rights Reserved.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
INTRODUCTION 3
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 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. For more information on
the symbol, refer to the Index.
9: Airbag Readiness Light
#:Air Conditioning
G:Air Conditioning Refrigerant Oil
!:Antilock Brake System (ABS)
g: Audio Steering Wheel Controls or
OnStar®(if equipped)
$: Brake System Warning Light
I:Certified Technician
":Charging System
I: Cruise Control
`:Do Not Puncture
^:Do Not Service
B:Engine Coolant Temperature
O:Exterior Lamps
_:Flame/Fire Prohibited
H: Flammable
.:Fuel Gauge
+: Fuses
3:Headlamp High/Low-Beam
Changer
(: Heated Steering Wheel
j:LATCH System Child Restraints
*:Malfunction Indicator Lamp
::Oil Pressure
O:Power
/:Remote Vehicle Start
>:Safety Belt Reminders
h:Start/Stop
7: Tire Pressure Monitor
d:Traction Control/StabiliTrak®
a:Under Pressure
M: Windshield Washer Fluid

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
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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 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.
Remote Keyless Entry
(RKE) System
Do not make changes or modifications
to the Remote Keyless Entry (RKE).
This could void authorization to use
this equipment.
If there is a decrease in the 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 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.
Keep in mind that other conditions,
such as those previously stated, can
impact the performance of the
transmitter.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
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KEYS, DOORS, AND WINDOWS 45
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/RUN/
START, 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.
SeeKey and Lock Messages 0145.
If the ignition modes will not change
with the other transmitter, your
vehicle needs service. If the ignition
does change modes, the first
transmitter may be faulty. See the
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
transmitters, see
“Programming
Transmitters to the Vehicle ”under
Remote Keyless Entry (RKE) System
Operation 029.
Do not leave the key or device that
disarms or deactivates the
theft-deterrent system in the vehicle.Exterior Mirrors
Convex Mirrors
{Warning
A convex mirror can make things,
like other vehicles, look farther
away than they really are. If you cut
too sharply into the right lane, you
could hit a vehicle on the right.
Check the inside mirror or glance
over your shoulder before changing
lanes.
The passenger side mirror is convex
shaped. A convex mirror's surface is
curved so more can be seen from the
driver seat.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
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48 KEYS, DOORS, AND WINDOWS
To adjust the brightness, press the
button (1) on the back of the rearview
mirror without covering the light
sensor (2).
Each button press cycles the
brightness between five settings.
{Warning
The Rear Camera Mirror (RCM) has
a limited view. Portions of the road,
vehicles, and other objects may not
be seen. Do not drive or park the
vehicle using only this camera.
Objects may appear closer than
they are. Check the outside mirrors
or glance over your shoulder when
making lane changes or merging.
Failure to use proper care may
result in injury, death, or vehicle
damage.
The camera that provides the Rear
Camera Mirror (RCM) image is above
the license plate, next to the Rear
Vision Camera (RVC).
To clean the rear camera, see
Windshield Wiper/Washer0109.
Troubleshooting
If the tab is in the rearward position
and a blue screen and
dare displayed
in the mirror and the display shuts
off, see your dealer for service.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
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62 SEATS AND RESTRAINTS
See“Auto Memory Recall’ under
“Comfort and Convenience ”in Vehicle
Personalization 0152.
To stop recall movement, press one of
the memory, power mirror, or power
seat controls; or press the power tilt
and telescoping steering column
control.
RKE transmitters are not labeled with
a number. If your memory seat
position is stored to 1 or 2 but this
position is not automatically recalling,
then store your positions to the other
button or switch RKE transmitters
with the other driver.
If the vehicle’s driver has changed, in
some vehicles the Driver ID may be
displayed for the first few ignition
cycles.
Easy Exit Recall (Driver Only)
If programmed on in the vehicle
personalization menu, the easy exit
feature automatically recalls the
previously stored exit positions when
leaving the vehicle. See “Storing
Memory Positions ”earlier in this
section. See also Vehicle
Personalization 0152. Easy exit recall automatically activates
when one of the following occurs:
.
The vehicle is turned off and the
driver door is opened within a
short time.
. The vehicle is turned off with the
driver door open.
To stop recall movement, press one of
the memory, power mirror, or power
seat controls; or press the power tilt
and telescoping steering column
control.
Obstructions
If something has blocked the driver
seat while recalling a memory
position, the recall may stop. Remove
the obstruction. Then do one of the
following:
. If automatically or manually
recalling the stored memory
position, press and hold the
appropriate manual control for
two seconds. Try recalling again
by pressing the appropriate
memory button. If automatically
recalling the position, try recalling again by opening the driver door
and pressing
Kon the RKE
transmitter.
. If recalling the exit position, press
and hold the appropriate manual
control for the exit feature not
recalling for two seconds. Then try
recalling the exit position again.
If the memory position is still not
recalling, see your dealer for service.
Heated and Ventilated
Front Seats
{Warning
If you cannot feel temperature
change or pain to the skin, the seat
heater may cause burns. To reduce
the risk of burns, people with such
a condition should use care when
using the seat heater, especially for
long periods of time. Do not place
anything on the seat that insulates
against heat, such as a blanket,
cushion, cover, or similar item. This
may cause the seat heater to (Continued)

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
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SEATS AND RESTRAINTS 79
{Warning
When an airbag inflates, there may
be dust in the air. This dust could
cause breathing problems for
people with a history of asthma or
other breathing trouble. To avoid
this, everyone in the vehicle should
get out as soon as it is safe to do
so. If you have breathing problems
but cannot get out of the vehicle
after an airbag inflates, then get
fresh air by opening a window or a
door. If you experience breathing
problems following an airbag
deployment, you should seek
medical attention.
The vehicle has a feature that may
automatically unlock the doors, turn
on the interior lamps and hazard
warning flashers, and shut off the fuel
system after the airbags inflate. The
feature may also activate, without
airbag inflation, after an event that
exceeds a predetermined threshold.
You can lock the doors, turn off the interior lamps, and turn off the hazard
warning flashers by using the controls
for those features.
{Warning
A crash severe enough to inflate the
airbags may have also damaged
important functions in the vehicle,
such as the fuel system, brake and
steering systems, etc. Even if the
vehicle appears to be drivable after
a moderate crash, there may be
concealed damage that could make
it difficult to safely operate the
vehicle.
Use caution if you should attempt
to restart the engine after a crash
has occurred.
In many crashes severe enough to
inflate the airbag, windshields are
broken by vehicle deformation.
Additional windshield breakage may
also occur from the front outboard
passenger airbag.
. Airbags are designed to inflate
only once. After an airbag inflates,
you will need some new parts for the airbag system. If you do not
get them, the airbag system will
not be there to help protect you in
another crash. A new system will
include airbag modules and
possibly other parts. The service
manual for the vehicle covers the
need to replace other parts.
. The vehicle has a crash sensing
and diagnostic module which
records information after a crash.
See Vehicle Data Recording and
Privacy 0325 and Event Data
Recorders 0325.
. Let only qualified technicians
work on the airbag systems.
Improper service can mean that
an airbag system will not work
properly. See your dealer for
service.
Passenger Sensing System
The vehicle has a passenger sensing
system for the front outboard
passenger position. The passenger
airbag status indicator will light on
the overhead console when the vehicle
is started.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
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SEATS AND RESTRAINTS 81
.The system determines that an
infant is present in a child
restraint.
. A front outboard passenger takes
his/her weight off of the seat for a
period of time.
. There is a critical problem with
the airbag system or the passenger
sensing system.
When the passenger sensing system
has turned off the front outboard
passenger frontal airbag and knee
airbag, the off indicator will light and
stay lit as a reminder that the airbags
are off. See Passenger Airbag Status
Indicator 0126.
The passenger sensing system is
designed to turn on the front
outboard passenger frontal airbag and
knee airbag anytime the system
senses that a person of adult size is
sitting properly in the front outboard
passenger seat. When the passenger
sensing system has allowed the
airbag(s) to be enabled, the on
indicator will light and stay lit as a
reminder that the airbag(s) are active. For some children, including children
in child restraints, and for very small
adults, the passenger sensing system
may or may not turn off the front
outboard passenger frontal airbag and
knee airbag, depending upon the
person’s seating posture and body
build. Everyone in the vehicle who has
outgrown child restraints should wear
a safety belt properly
—whether or
not there is an airbag for that person.
{Warning
If the airbag readiness light ever
comes on and stays on, it means
that something may be wrong with
the airbag system. To help avoid
injury to yourself or others, have
the vehicle serviced right away. See
Airbag Readiness Light 0126 for
more information, including
important safety information.
If the On Indicator Is Lit for a
Child Restraint
The passenger sensing system is
designed to turn off the front
outboard passenger frontal airbag and knee airbag if the system determines
that an infant is present in a child
restraint. If a child restraint has been
installed and the on indicator is lit:
1. Turn the vehicle off.
2. Remove the child restraint from the vehicle.
3. Remove any additional items from the seat such as blankets,
cushions, seat covers, seat
heaters, or seat massagers.
4. Reinstall the child restraint following the directions provided
by the child restraint
manufacturer and refer to
Securing Child Restraints (With the
Safety Belt in the Rear Seat) 098
or Securing Child Restraints (With
the Safety Belt in the Front
Seat) 099.
Make sure the safety belt
retractor is locked by pulling the
shoulder belt all the way out of
the retractor when installing the
child restraint, even if the child
restraint is equipped with a
safety belt lock-off. When the

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
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SEATS AND RESTRAINTS 83
{Warning
If the front outboard passenger
airbag is turned off for an
adult-sized occupant, the airbag will
not be able to inflate and help
protect that person in a crash,
resulting in an increased risk of
serious injury or even death. An
adult-sized occupant should not
ride in the front outboard passenger
seat, if the passenger airbag off
indicator is lit.
Additional Factors Affecting
System Operation
Safety belts help keep the passenger
in position on the seat during vehicle
maneuvers and braking, which helps
the passenger sensing system
maintain the passenger airbag status.
See“Safety Belts” and“Child
Restraints ”for additional information
about the importance of proper
restraint use.
A thick layer of additional material,
such as a blanket or cushion,
or aftermarket equipment such as seat covers, seat heaters, and seat
massagers can affect how well the
passenger sensing system operates.
We recommend that you not use seat
covers or other aftermarket equipment
except when approved by GM for your
specific vehicle. See
Adding Equipment
to the Airbag-Equipped Vehicle 084 for
more information about modifications
that can affect how the system
operates.
The on indicator may be lit if an
object, such as a briefcase, handbag,
grocery bag, laptop, or other electronic
device is put on an unoccupied seat.
If this is not desired remove the object
from the seat.{Warning
Stowing of articles under the
passenger seat or between the
passenger seat cushion and
seatback may interfere with the
proper operation of the passenger
sensing system.
Servicing the
Airbag-Equipped Vehicle
Airbags affect how the vehicle should
be serviced. There are parts of the
airbag system in several places around
the vehicle. Your dealer and the
service manual have information
about servicing the vehicle and the
airbag system.
{Warning
For up to 10 seconds after the
vehicle is turned off and the battery
is disconnected, an airbag can still
inflate during improper service. You
can be injured if you are close to an
airbag when it inflates. Avoid
yellow connectors. They are
probably part of the airbag system.
Be sure to follow proper service
procedures, and make sure the
person performing work for you is
qualified to do so.