2019 CADILLAC CT6 air conditioning

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
344 VEHICLE CARE
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 0346. 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.
GVWR
:Gross Vehicle Weight
Rating. See Vehicle Load Limits
0 197.
GAWR FRT
:Gross Axle Weight
Rating for the front axle. See
Vehicle Load Limits 0197.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
SERVICE AND MAINTENANCE 383
Maintenance Schedule
Owner Checks and Services
At Each Fuel Stop
.Check the engine oil level. See
Engine Oil 0299.
Once a Month
. Check the tire inflation pressures.
See Tire Pressure 0346.
. Inspect the tires for wear. See Tire
Inspection 0353.
. Check the windshield washer fluid
level. See Washer Fluid 0313.
Engine Oil Change
When the CHANGE ENGINE OIL
SOON message displays, have the
engine oil and filter changed within
the next 1 000 km/600 mi. If driven
under the best conditions, the engine
oil life system may not indicate the
need for vehicle service for up to a
year. The engine oil and filter must be
changed at least once a year and the
oil life system must be reset. Your
trained dealer technician can perform
this work. If the engine oil life system is reset accidentally, service the
vehicle within 5 000 km/3,000 mi since
the last service. Reset the oil life
system when the oil is changed. See
Engine Oil Life System
0302.
Air Conditioning Desiccant
(Replace Every Seven Years)
The air conditioning system requires
maintenance every seven years. This
service requires replacement of the
desiccant to help the longevity and
efficient operation of the air
conditioning system. This service can
be complex. See your dealer.
Tire Rotation and Required
Services Every 12 000 km/
7,500 mi
Rotate the tires, if recommended for
the vehicle, and perform the following
services. See Tire Rotation0353.
. Check engine oil level and oil
life percentage. If needed, change
engine oil and filter, and reset oil
life system. See Engine Oil0299
and
Engine Oil Life System 0302. .
Inspect the engine air filter and
check the air filter life percentage.
If necessary, replace engine air
filter and reset the Engine Air
Filter Life System. See Engine Air
Cleaner/Filter 0304 and
Engine Air Filter Life System 0304.
. Check engine coolant level. See
Cooling System 0307.
. Check windshield washer fluid
level. See Washer Fluid 0313.
. Check tire inflation pressures. See
Tire Pressure 0346.
. Inspect tire wear. See Tire
Inspection 0353.
. Visually check for fluid leaks.
. Inspect brake system. See Exterior
Care 0372.
. Visually inspect steering,
suspension, and chassis
components for damage, including
cracks or tears in the rubber boots,
loose or missing parts, or signs of
wear at least once a year. See
Exterior Care 0372.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
SERVICE AND MAINTENANCE 393
UsageFluid/Lubricant
Weatherstrip Conditioning Weatherstrip Lubricant (GM Part No. 3634770, in Canada 10953518) or equivalent.
Windshield Washer Automotive windshield washer fluid that meets regional freeze protection
requirements.
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 23418368 A3219C
3.0L V6 Engine (Driver Side) 23441383 A3207C
3.0L V6 Engine (Passenger Side) 23450879 A3206C
3.6L V6 Engine 23458700 A3204C
4.2L V8 Engine 84166540 A3242C
Engine Oil Filter
2.0L L4 Engine 55495105 PF66
3.0L V6 Engine 19330000 PF63E
3.6L V6 Engine 19330000 PF63E

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
TECHNICAL DATA 397
Vehicle Data
Capacities and Specifications
The following approximate capacities are given in metric and English conversions. SeeRecommended Fluids and Lubricants
0 392 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 thehood. See your dealer for more information.
Brake Fluid 0.4 L 0.4 qt
Cooling System –Engine
2.0L L4 Engine 9.4 L 10.0 qt
2.0L L4 Engine with Rear A/C 11.0 L 11.6 qt
3.0L V6 Engine 10.6 L 11.2 qt
3.0L V6 Engine with Rear A/C 12.3 L 13.0 qt
3.0L V6 Engine Intercoolers 3.2 L 3.4 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
4.2L V8 Engine 10.9 L 11.5 qt

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