2020 CADILLAC CT6 climate control

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
164 CLIMATE CONTROLS
9. On/Off
The fan, air delivery mode, air
conditioning, driver and passenger
temperatures, and Sync settings can
be controlled by touching CLIMATE
on the infotainment Home Page or the
climate button in the climate control
display application tray. A selection
can then be made on the front climate
control page displayed. See the
infotainment manual.
Climate Control Status DisplayThe climate control status display
appears briefly when the climate
control buttons on the center stack
are adjusted.
Automatic Operation
The system automatically controls the
fan speed, air delivery, air
conditioning, and recirculation in
order to heat or cool the vehicle to the
desired temperature.
When the indicator light is on or
AUTO is displayed on the climate
control display, the system is in full
automatic operation. If the air delivery
mode or fan setting is manually
adjusted, the Auto indicator turns off
and the display will show the selected
settings. Auto operation can be turned
off individually for climate settings.
For automatic operation: 1. Press AUTO.
2. Set the temperature. Allow the system time to stabilize. Then
adjust the temperature as
needed. To improve fuel efficiency and to cool
the vehicle faster, recirculation may be
automatically selected in warm
weather. The recirculation light will
not come on in AUTO mode. Press
@to select recirculation; press it
again to select outside air.
English units can be changed to
metric units through the instrument
cluster. See “Cluster Options Menu ”or
“Cluster Menu ”under Instrument
Cluster (Base Level) 0110 or
Instrument Cluster (Uplevel) 0113.
OFF : Press to turn the fan on or off.
Q/R:The temperature can be
adjusted separately for the driver and
the passenger. Press to increase or
decrease the temperature. Press and
hold to rapidly increase or decrease
the temperature.
The driver and passenger
temperatures can also be adjusted by
touching the controls on the climate
control display.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
CLIMATE CONTROLS 165
Sync :Touch Sync on the climate
control display to link all climate zone
settings to the driver settings. When
all climate zone settings are linked,
the Sync indicator will be lit. Adjust
the driver side temperature control to
change the linked temperature. When
the front or rear passenger settings
are adjusted, the Sync indicator will
turn off.
Manual Operation
Q 9 R:Press or touch the fan
buttons on the center stack or climate
control display to increase or decrease
the fan speed. Press and hold the
buttons to adjust speed more quickly.
The fan speed setting displays.
Pressing either button cancels
automatic fan control and the fan can
be controlled manually. Press AUTO to
return to automatic operation.
Driver and Passenger Air Delivery
Mode Controls : When the climate
information is displayed, touch the
desired air delivery mode on the
climate control display to change the
direction of the airflow. The selected
air delivery mode button is lit.
Touching any of the air delivery buttons cancels automatic air delivery
control and the direction of the
airf low can be controlled manually.
Press AUTO to return to automatic
operation.
To change the current mode, select
one of the following:
Y:
Air is directed to the instrument
panel outlets.
\: Air is divided between the
instrument panel outlets and the floor
outlets.
[: Air is directed primarily to the
floor outlets. Some air Is directed to
the windshield and outboard vent
outlets.
c: Clears the windows of fog or
moisture. Air is directed to the
windshield, windshield defroster, side
window defrosters, outboard vent
outlets, and floor outlets.
0: Clears the windshield of fog or
frost more quickly. Air is directed to
the windshield. Press
0to turn on or
off. Changing the air delivery mode
also turns the defrost off. A/C :
Touch A/C on the climate
control display to turn the air
conditioning on or off. If the fan is
turned off or the outside temperature
falls below freezing, the air
conditioner will not run.
Press AUTO to return to automatic
operation and the air conditioner runs
as needed.
Automatic Air Recirculation : When
the AUTO indicator light is on, the air
is automatically recirculated as
needed to help quickly cool the inside
of the vehicle.
The climate control system may have
a sensor to detect air pollution. When
using automatic air recirculation, the
air quality control system may
operate. To adjust the sensitivity of
the air quality sensor, see “Climate
and Air Quality” underVehicle
Personalization 0140.
@:Press to alternate between
recirculating air inside the vehicle or
pulling in outside air. The indicator
light on the button is lit when
recirculation mode is active. This

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
166 CLIMATE CONTROLS
helps to quickly cool the air inside the
vehicle or reduce the outside air and
odors that might enter.
Pressing this button cancels automatic
recirculation. Press AUTO to return to
automatic operation; recirculation
runs automatically as needed.
Manual recirculation mode is not
available when in Defrost, Heater,
or Defog modes.
Auto Defog :The climate control
system has a sensor to automatically
detect high humidity inside the
vehicle. When high humidity is
detected, the climate control system
may adjust to outside air supply and
turn on the air conditioner. If the
climate control system does not
detect possible window fogging, it
returns to normal operation. To turn
Auto Defog off or on, see “Climate and
Air Quality” underVehicle
Personalization 0140.
Ionizer : If equipped with an ionizer,
this feature helps to clean the air
inside the vehicle and remove
contaminants such as pollen, odors,
and dust. If the climate control system is on and the ionizer is
enabled, the ionizer status indicator
will be lit on the climate control
display. To turn the ionizer on or off,
see
“Climate and Air Quality” under
Vehicle Personalization 0140.
Rear Window Defogger
K:Press to turn the rear window
defogger on or off.
The rear window defogger can be set
to automatic operation. See “Climate
and Air Quality” underVehicle
Personalization 0140. When Auto Rear
Defog is selected, the rear window
defogger turns on automatically when
the interior temperature is cold and
the outside temperature is about 4 °C
(40 °F) and below.
The upper grid lines on the rear
window are antenna lines and are not
intended to heat when the defogger is
activated.
The heated outside mirrors turn on
when the rear window defogger
button is on and help to clear fog or
frost from the surface of the mirrors.
Caution
Do not try to clear frost or other
material from the inside of the
front windshield and rear window
with a razor blade or anything else
that is sharp. This may damage the
rear window defogger grid and
affect the radio's ability to pick up
stations clearly. The repairs would
not be covered by the vehicle
warranty.
Driver and Passenger Heated and
Ventilated Seats (If Equipped) :
Press
Ior+to heat the driver or
passenger seatback only.
Press
Jorzto heat the driver or
passenger seat cushion and seatback.
Press
Cor{to ventilate the driver
or passenger seat. See Heated and
Ventilated Front Seats 051.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
CLIMATE CONTROLS 167
Remote Start Climate Control
Operation :If equipped with the
remote start feature, the climate
control system may run when the
vehicle is started remotely. The system
uses the driver’s previous settings to
heat or cool the inside of the vehicle.
The rear window defogger may come
on during remote start based on cold
ambient conditions. The rear window
defogger indicator light does not come
on during a remote start.
If equipped, the heated seats will turn
on if it is cold outside or the
ventilated seats will turn on if it is hot
outside. The heated and ventilated
seat indicator lights may not come on
during a remote start. If equipped, the
heated steering wheel will come on in
a remote start if it is cold outside. The
heated steering wheel indicator light
may not come on.
See Remote Vehicle Start 017 and
Heated and Ventilated Front Seats 051.Sensor
The solar sensor, on top of the
instrument panel near the windshield,
monitors the solar heat. The climate control system uses the
sensor information to adjust the
temperature, fan speed, recirculation,
and air delivery mode for best
comfort.
If the sensor is covered, the automatic
climate control system may not work
properly.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
168 CLIMATE CONTROLS
Rear Climate Control System
The rear climate control system is on the rear of the center console. The settings
can be adjusted with the rear climate control buttons and the rear climate
control display.
Rear Climate Control Buttons
1. Rear Driver Side and Passenger Side Temperature Controls
2.
O(On/Off) 3. Air Delivery Mode Control
4. AUTO (Automatic Operation)
5. Fan Control
Rear Climate Control Display
1. Rear Driver Side and Passenger Side Temperature Display
2. Rear Fan Control
3. Rear Driver Side and Passenger Side Temperature Controls
4. Sync (Synchronized Temperatures)
5. Rear Control Lockout
6. Air Delivery Mode Control
7. Rear Auto (Automatic Operation)
8. On/Off

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
CLIMATE CONTROLS 169
Rear :Touch Rear on the Home Page
of the infotainment display to open
the rear climate control display. The
rear climate control settings can now
be adjusted from the front
passenger area.
O: PressOor touch On/Off on the
rear climate control display to turn
the rear climate control on or off.
Sync : Touch Sync on the rear climate
control display to match the rear
climate control temperature to the
front climate control driver
temperature. The Sync button will
be lit.
Rear Control Lockout : Touch to lock
or unlock control of the rear climate
control system from the rear seat
passengers. When locked, the rear
climate control can only be adjusted
from the front seat.
Automatic Operation
AUTO : Press to turn on or off. The
air delivery is controlled
automatically. The Auto indicator appears on the display. If the air
delivery mode is manually adjusted,
this cancels full automatic operation.
Manual Operation
9:
Press or press and hold the rear
fan button up or down to increase or
decrease the rear climate airf low. The
rear climate airf low can also be
adjusted by touching the fan controls
on the front climate control display.
Temperature Controls : Press or
press and hold the rear temperature
control buttons up or down to adjust
the rear passenger temperatures. The
rear passenger temperatures can also
be adjusted by touching
Qfor warmer
air or
Rfor cooler air on the front
climate control display.
Air Delivery Mode Control : Press or
press and hold the button up or down
to select the desired air delivery mode.
Touch the desired air delivery mode
on the rear climate control display to
change the direction of the airf low in
the rear seating area.
Air Vents
Adjustable air vents are in the center
and on the sides of the instrument
panel, on the rear of the center
console storage, and in the headliner
over the rear seats, if equipped.
Move the slider knobs to change the
direction of or to close off the airf low.
Operation Tips
. Clear away any ice, snow, or leaves
from air inlets at the base of the
windshield that could block the
flow of air into the vehicle.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
170 CLIMATE CONTROLS
.Clear snow off the hood to
improve visibility and help
decrease moisture drawn into the
vehicle.
. Keep the path under the front
seats clear of objects to help
circulate the air inside of the
vehicle more effectively.
. Use of non-GM approved hood
deflectors can adversely affect the
performance of the system. Check
with your dealer before adding
equipment to the outside of the
vehicle.
. Do not attach any devices to the
air vent slats. This restricts airflow
and may cause damage to the air
vents.Maintenance
Passenger Compartment
Air Filter
The filter reduces dust, pollen, and
other airborne irritants from outside
air that is pulled into the vehicle. The
filter should be replaced as part of
routine scheduled maintenance. See
Maintenance Schedule 0359.
See your dealer regarding replacement
of the filter.
Service
All vehicles have a label underhood
that identifies the refrigerant used in
the vehicle. The refrigerant system
should only be serviced by trained and
certified technicians. The air
conditioning evaporator should never
be repaired or replaced by one from a
salvage vehicle. It should only be
replaced by a new evaporator to
ensure proper and safe operation. During service, all refrigerants should
be reclaimed with proper equipment.
Venting refrigerants directly to the
atmosphere is harmful to the
environment and may also create
unsafe conditions based on inhalation,
combustion, frostbite, or other
health-based concerns.
The air conditioning system requires
periodic maintenance. See
Maintenance Schedule
0359.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/14/19
172 DRIVING AND OPERATING
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . 258
Recommended Fuel (3.6LV6 Engine) . . . . . . . . . . . . . . . . . . . . . . 258
Recommended Fuel (4.2L Twin Turbo V8 Engine) . . . . . . . . . . . . . . . 259
Prohibited Fuels . . . . . . . . . . . . . . . . . . 259
Fuels in Foreign Countries . . . . . . . 259
Fuel Additives . . . . . . . . . . . . . . . . . . . . 259
Filling the Tank . . . . . . . . . . . . . . . . . . 260
Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . . . . . . . 261
Trailer Towing
General Towing Information . . . . 262
Driving Characteristics andTowing Tips . . . . . . . . . . . . . . . . . . . . . 262
Trailer Towing . . . . . . . . . . . . . . . . . . . . 266
Towing Equipment . . . . . . . . . . . . . . . 267
Conversions and Add-Ons
Add-On Electrical Equipment . . . 269
Driving Information
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.
Distracted Driving
Distraction comes in many forms and
can take your focus from the task of
driving. Exercise good judgment and
do not let other activities divert your
attention away from the road. Many
local governments have enacted laws
regarding driver distraction. Become
familiar with the local laws in
your area.
To avoid distracted driving, keep your
eyes on the road, keep your hands on
the steering wheel, and focus your
attention on driving.
.Do not use a phone in demanding
driving situations. Use a
hands-free method to place or
receive necessary phone calls.