2016 CADILLAC CT6 air conditioning

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
190 Climate Controls 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.
.
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 0 344 .
See your dealer regarding
replacement of the filter.
Service This vehicle has the new
environmentally friendly refrigerant,
R1234yf. This refrigerant has a
significantly reduced global warming
impact on the environment,
compared to the traditional
automotive refrigerant, R-134a. 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.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Vehicle Care 281too serious. Sometimes the engine
can get a little too hot when the
vehicle:
.
Climbs a long hill on a hot day.
.
Stops after high-speed driving.
.
Idles for long periods in traffic.
If the overheat warning is displayed
with no sign of steam:
1. Turn the air conditioning off.
2. Turn the heater on to the
highest temperature and to the
highest fan speed. Open the
windows as necessary.
3. When it is safe to do so, pull off
the road, shift to P (Park) or
N (Neutral), and let the
engine idle.
If the engine coolant temperature
gauge is no longer in the
overheated area or the engine
coolant temperature warning light no
longer displays, the vehicle can be
driven. Continue to drive the vehicle
slowly for about 10 minutes. Keep a
safe distance from the vehicle in
front. If the warning does not come back on, continue to drive normally
and have the cooling system
checked for proper fill and function.
If the warning continues, pull over,
stop, and park the vehicle
right away.
If there is no sign of steam, idle the
engine for three minutes while
parked. If the warning is still
displayed, turn off the engine until it
cools down.
Washer Fluid What to Use When windshield washer fluid is
needed, be sure to read the
manufacturer's instructions before
use. If operating the vehicle in an
area where the temperature may fall
below freezing, use a fluid that has
sufficient protection against
freezing. Adding Washer Fluid
Open the cap with the washer
symbol on it. Add washer fluid until
the tank is full. See Engine
Compartment Overview 0 265 for
reservoir location.
Caution .
Do not use washer fluid that
contains any type of water
repellent coating. This can
cause the wiper blades to
chatter or skip.
.
Do not use engine coolant
(antifreeze) in the
windshield washer. It can
damage the windshield
washer system and paint.
(Continued)

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
304 Vehicle Care (4) Construction Code :
A letter
code is used to indicate the type
of ply construction in the tire.
The letter R means radial ply
construction; the letter D means
diagonal or bias ply
construction; and the letter B
means belted-bias ply
construction.
(5) Rim Diameter :
Diameter of
the wheel in inches.
(6) Service Description :
These
characters represent the load
index and speed rating of the
tire. The load index represents
the load carrying capacity a tire
is certified to carry. The speed
rating is the maximum speed a
tire is certified to carry a load.
Tire Terminology and
Definitions Air Pressure :
The amount of
air inside the tire pressing
outward on each square inch of the tire. Air pressure is
expressed in kPa (kilopascal)
or psi (pounds per square inch).
Accessory Weight :
The
combined weight of optional
accessories. Some examples of
optional accessories are
automatic transmission, power
windows, power seats, and air
conditioning.
Aspect Ratio :
The relationship
of a tire's height to its width.
Belt :
A rubber coated layer of
cords between the plies and the
tread. Cords may be made from
steel or other reinforcing
materials.
Bead :
The tire bead contains
steel wires wrapped by steel
cords that hold the tire onto
the rim.
Bias Ply Tire :
A pneumatic tire
in which the plies are laid at
alternate angles less than
90 degrees to the centerline of
the tread. Cold Tire Pressure :
The
amount of air pressure in a tire,
measured in kPa (kilopascal)
or psi (pounds per square inch)
before a tire has built up heat
from driving. See Tire
Pressure 0 306 .
Curb Weight :
The weight of a
motor vehicle with standard and
optional equipment including the
maximum capacity of fuel, oil,
and coolant, but without
passengers and cargo.
DOT Markings :
A code molded
into the sidewall of a tire
signifying that the tire is in
compliance with the U.S.
Department of Transportation
(DOT) Motor Vehicle Safety
Standards. The DOT code
includes the Tire Identification
Number (TIN), an alphanumeric
designator which can also
identify the tire manufacturer,
production plant, brand, and
date of production.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
354 Service and Maintenance Usage Fluid/Lubricant
Key Lock Cylinders, Hood and Door
Hinges Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in
Canada 10953474).
Weatherstrip Conditioning Weatherstrip Lubricant (GM Part No. 3634770, in Canada 10953518) or
Dielectric Silicone Grease (GM Part No. 12345579, in Canada 10953481).
Maintenance Replacement Parts Replacement parts identified below by name, part number, or specification can be obtained from your dealer.
Part GM Part Number ACDelco Part Number
Engine Air Cleaner/Filter
2.0L L4 Engine 23184137 A3205C
3.0L V6 Twin Turbo Engine (Driver Side) 23441383 A3207C
3.0L V6 Twin Turbo Engine (Passenger Side) 23450879 A3206C
3.6L V6 Engine 23458700 A3204C
Engine Oil Filter
2.0L L4 Engine 12640445 PF64
3.0L V6 Twin Turbo Engine 19330000 PF63E
3.6L V6 Engine 19330000 PF63E
Passenger Compartment Air Filter 13356916 CF185

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
358 Technical Data
Vehicle Data Capacities and Specifications The following approximate capacities are given in metric and English conversions. See Recommended Fluids and
Lubricants 0 353 for more information.
Application Capacities
Metric English
Air Conditioning Refrigerant For the air conditioning system refrigerant type and
charge amount, see the refrigerant label under the
hood. See your dealer for more information.
Cooling System – Engine
2.0L L4 Engine 8.6 L 9.1 qt
2.0L L4 Engine with Rear A/C 10.3 L 10.9 qt
3.0L V6 Twin Turbo Engine 10.6 L 11.2 qt
3.0L V6 Twin Turbo Engine with Rear A/C 12.3 L 13.0 qt
3.0L V6 Twin Turbo Engine with Rear A/C and Auxiliary
Radiator 13.2 L 13.9 qt
3.6L V6 Engine 9.8 L 10.4 qt
3.6L V6 Engine with Rear A/C 11.4 L 12.0 qt
Cooling System – Twin Turbo
3.0L V6 Engine Intercoolers 3.2 L 3.4 qt

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Index 385
Index A Accessories and
Modifications . . . . . . . . . . . . . . . . . . 262
Accessory Power . . . . . . . . . . . . . . . 206
Adaptive Cruise Control . . . . . . . . 223
Add-On Electrical Equipment . . . 260
Additional Information
OnStar ®
. . . . . . . . . . . . . . . . . . . . . . 379
Additional Maintenance
and Care . . . . . . . . . . . . . . . . . . . . . . 350
Adjustments
Lumbar, Front Seats . . . . . . . . . . . . 60
Lumbar, Rear Seats . . . . . . . . . . . . 68
Thigh Support . . . . . . . . . . . . . . . . . . 61
Air Cleaner/Filter, Engine . . . . . . . 273
Air Conditioning . . . . . . . . . . . 178, 185
Air Filter, Passenger
Compartment . . . . . . . . . . . . . . . . . 190
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 189
Airbag System
Check . . . . . . . . . . . . . . . . . . . . . . . . . . 87
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . . . 80
Passenger Sensing System . . . . 82
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 80
What Will You See after an
Airbag Inflates? . . . . . . . . . . . . . . . 81 Airbag System (cont'd)
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 79
Where Are the Airbags? . . . . . . . . 78
Airbags
Adding Equipment to the
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . 86
Passenger Status Indicator . . . 130
Readiness Light . . . . . . . . . . . . . . 130
Servicing Airbag-Equipped
Vehicles . . . . . . . . . . . . . . . . . . . . . . . 86
System Check . . . . . . . . . . . . . . . . . . 76
Alarm
Vehicle Security . . . . . . . . . . . . . . . . 44
Alert
Lane Change . . . . . . . . . . . . . . . . . 246
Side Blind Zone (SBZA) . . . . . . 246
All-Season Tires . . . . . . . . . . . . . . . . 300
All-Wheel Drive . . . . . . . . . . . . 213, 284
Antilock Brake System (ABS) . . . 214
Warning Light . . . . . . . . . . . . . . . . . 135
Appearance Care
Exterior . . . . . . . . . . . . . . . . . . . . . . . 333
Interior . . . . . . . . . . . . . . . . . . . . . . . . 338
Armrest
Rear Seat . . . . . . . . . . . . . . . . . . . . . . 68
Armrest Storage . . . . . . . . . . . . . . . . 107

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Index 389Fuel (cont'd)
Filling a Portable Fuel
Container . . . . . . . . . . . . . . . . . . . 255
Filling the Tank . . . . . . . . . . . . . . . 253
Foreign Countries . . . . . . . . . . . . 253
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 124
Low Fuel Warning Light . . . . . . . 138
Requirements, California . . . . . 253
System Messages . . . . . . . . . . . . 150
Fuses
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 290
Fuses and Circuit Breakers . . . 290
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 293
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 295
G Garage Door Opener . . . . . . . . . . . 166
Programming . . . . . . . . . . . . . . . . . 166
Gauges
Boost . . . . . . . . . . . . . . . . . . . . . . . . . 125
Engine Coolant
Temperature . . . . . . . . . . . . . . . . 128
Engine Oil Pressure . . . . . . . . . . 126
Engine Oil Temperature . . . . . . . 127
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Odometer . . . . . . . . . . . . . . . . . . . . . 124 Gauges (cont'd)
Speedometer . . . . . . . . . . . . . . . . . 123
Tachometer . . . . . . . . . . . . . . . . . . . 124
Trip Odometer . . . . . . . . . . . . . . . . 124
Voltmeter . . . . . . . . . . . . . . . . . . . . . 129
Warning Lights and
Indicators . . . . . . . . . . . . . . . . . . . .117
General Information
Service and Maintenance . . . . . 342
Towing . . . . . . . . . . . . . . . . . . . . . . . . 255
Vehicle Care . . . . . . . . . . . . . . . . . . 262
Glove Box . . . . . . . . . . . . . . . . . . . . . . 106
H Hazard Warning Flashers . . . . . . . 173
Head Restraints . . . . . . . . . . . . . . . . . 58
Head-up Display . . . . . . . . . . . . . . . . 143
Headlamps
Aiming . . . . . . . . . . . . . . . . . . . . . . . . 287
Automatic . . . . . . . . . . . . . . . . . . . . . 172
Bulb Replacement . . . . . . . . . . . . 288
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . 172
Flash-to-Pass . . . . . . . . . . . . . . . . . 172
High-Beam On Light . . . . . . . . . . 139
High/Low Beam Changer . . . . . 172
Lamps On Reminder . . . . . . . . . 139
Heated
Steering Wheel . . . . . . . . . . . . . . . . 111 Heated and Ventilated Front
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Heated and Ventilated Rear
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Heated Mirrors . . . . . . . . . . . . . . . . . . . 49
Heater
Engine Coolant . . . . . . . . . . . . . . . 206
Heating and Air
Conditioning . . . . . . . . . . . . . . 178, 185
High-Beam On Light . . . . . . . . . . . . 139
High-Speed Operation . . . . . . . . . . 308
Hill and Mountain Roads . . . . . . . . 196
Hill Start Assist (HSA) . . . . . . . . . . 216
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
How to Wear Safety Belts
Properly . . . . . . . . . . . . . . . . . . . . . . . . 71
I Ignition Positions . . . . . . . . . . . . . . . 202
Immobilizer . . . . . . . . . . . . . . . . . . . . . . 46
Indicator
Pedestrian Ahead . . . . . . . . . . . . 136
Vehicle Ahead . . . . . . . . . . . . . . . . 136
Infants and Young Children,
Restraints . . . . . . . . . . . . . . . . . . . . . . 90
Infotainment . . . . . . . . . . . . . . . . . . . . 177
Infotainment System . . . . . . . . . . . . 374
Instrument Cluster . . . . . . . . . 118, 121