CADILLAC CT6 2019 Owner's Manual

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
390 SERVICE AND MAINTENANCE
Lamps
Properly working headlamps,
taillamps, and brake lamps are
important to see and be seen on
the road.
.Signs that the headlamps need
attention include dimming, failure
to light, cracking, or damage. The
brake lamps need to be checked
periodically to ensure that they
light when braking.
. With a multi-point inspection,
your dealer can check the lamps
and note any concerns.
Shocks and Struts
Shocks and struts help aid in control
for a smoother ride.
. Signs of wear may include steering
wheel vibration, bounce/sway
while braking, longer stopping
distance, or uneven tire wear.
. As part of the multi-point
inspection, trained dealer
technicians can visually inspect
the shocks and struts for signs of leaking, blown seals, or damage,
and can advise when service is
needed.
Tires
Tires need to be properly inflated,
rotated, and balanced. Maintaining
the tires can save money and fuel, and
can reduce the risk of tire failure.
. Signs that the tires need to be
replaced include three or more
visible treadwear indicators; cord
or fabric showing through the
rubber; cracks or cuts in the tread
or sidewall; or a bulge or split in
the tire.
. Trained dealer technicians can
inspect and recommend the right
tires. Your dealer can also provide
tire/wheel balancing services to
ensure smooth vehicle operation
at all speeds. Your dealer sells and
services name brand tires.
Vehicle Care
To help keep the vehicle looking like
new, vehicle care products are
available from your dealer. For
information on how to clean and protect the vehicle’s interior and
exterior, see
Interior Care 0376 and
Exterior Care 0372.
Wheel Alignment
Wheel alignment is critical for
ensuring that the tires deliver optimal
wear and performance.
. Signs that the alignment may need
to be adjusted include pulling,
improper vehicle handling,
or unusual tire wear.
. Your dealer has the required
equipment to ensure proper wheel
alignment.
Windshield
For safety, appearance, and the best
viewing, keep the windshield clean
and clear.
. Signs of damage include scratches,
cracks, and chips.
. Trained dealer technicians can
inspect the windshield and
recommend proper replacement if
needed.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
SERVICE AND MAINTENANCE 391
Wiper Blades
Wiper blades need to be cleaned and
kept in good condition to provide a
clear view.
.Signs of wear include streaking,
skipping across the windshield,
and worn or split rubber.
. Trained dealer technicians can
check the wiper blades and replace
them when needed.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
392 SERVICE AND MAINTENANCE
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
UsageFluid/Lubricant
Automatic Transmission DEXRON-ULV Automatic Transmission Fluid (GM Part No. 19352619, in Canada 19352620).
Engine Coolant 50/50 mixture of clean drinkable water and use only DEX-COOL Coolant.
Engine Oil (Except 4.2L V8 Twin Turbo Engine) Engine oil meeting the dexos1 specification of the proper SAE viscosity grade.
ACDelco dexos1 full synthetic is recommended. See
Engine Oil0299.
Engine Oil (4.2L V8 Twin Turbo Engine Only) Engine oil meeting the dexos2 specification of the proper SAE viscosity grade.
ACDelco dexos2 is recommended. See
Engine Oil0299.
Hood Latch Assembly, Pivots, Spring Anchor, and Release Pawl Lubriplate Lubricant Aerosol (GM Part No. 89021668, in Canada 89021674) or
lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid (GM Part No. 19353126, in Canada 19353127).
Key Lock Cylinders, Hood and Door Hinges Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in
Canada 10953474).
Rear Axle (Except V-Series)/Front Axle SAE 75W-90 Synthetic Axle Lubricant (GM Part No. 88863089, in Canada 88863090).
Rear Axle (V-Series) SAE 75W-90 Synthetic Axle Lubricant (GM Part No. 88862624, in
Canada 88862625).
Transfer Case (All-Wheel Drive) Transfer Case Fluid (GM Part No. 19331044, in Canada 19331045).

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
394 SERVICE AND MAINTENANCE
PartGM Part Number ACDelco Part Number
4.2L V8 Engine 19330000PF63E
Passenger Compartment Air Filter
Particulate 13508023CF185
Carbon 13356914CF184
Spark Plugs
2.0L L4 Engine 5550435441-103-IP
3.0L V6 Engine 1265028341-131
3.6L V6 Engine 1264678041-130
4.2L V8 Engine 1267217541-104
Wiper Blades Driver Side –60 cm (23.62 in) 23368186—
Passenger Side –45 cm (17.72 in) 23353587—

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
SERVICE AND MAINTENANCE 395
Maintenance Records
After the scheduled services are performed, record the date, odometer reading, who performed the service, and the type of
services performed in the boxes provided. Retain all maintenance receipts.Date Odometer
Reading Serviced By Maintenance Stamp Services Performed

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
396 TECHNICAL DATA
Technical Data
Vehicle Identification
Vehicle IdentificationNumber (VIN) . . . . . . . . . . . . . . . . . . . 396
Service Parts Identification Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 396
Vehicle Data
Capacities and Specifications . . . . 397
Engine Drive Belt Routing . . . . . . . 399
Vehicle Identification
Vehicle Identification
Number (VIN)
This legal identifier is in the front
corner of the instrument panel, on the
driver side of the vehicle. It can be
seen through the windshield from
outside. The Vehicle Identification
Number (VIN) also appears on the
Vehicle Certification and Service Parts
labels and certificates of title and
registration.
Engine Identification
The eighth character in the VIN is the
engine code. This code identifies the
vehicle's engine, specifications, and
replacement parts. See “EngineSpecifications”
underCapacities and
Specifications 0397 for the vehicle's
engine code.
Service Parts Identification
Label
There may be a label on the inside of
the trunk that contains the following
information:
. Vehicle Identification
Number (VIN)
. Model designation
. Paint information
. Production options and special
equipment
If there is no label, there is a barcode
on the certification label on the
center (B) pillar to scan for this same
information.

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
398 TECHNICAL DATA
ApplicationCapacities
Metric English
4.2L V8 Engine with Rear A/C 12.5 L 13.0 qt
4.2L V8 Engine with Intercooler 2.7 L 2.8 qt
Engine Oil with Filter 2.0L L4 Engine 5.0 L 5.3 qt
3.0L V6 Engine 5.7 L 6.0 qt
3.6L V6 Engine 5.7 L 6.0 qt
4.2L V8 Engine 8.5 L 9.0 qt
Front Axle 0.5 L 0.53 qt
Rear Axle 0.5 L 0.53 qt
Rear Axle 4.2L V8 Twin Turbo (LTA) Engine or V-Series 1.1 L 1.16 qt
Fuel Tank 72.7 L 19.2 gal
Transfer Case –AWD 0.8 L 0.85 qt
Wheel Nut Torque 150 Y110 lb ft
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this manual.
Recheck fluid level after filling.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
TECHNICAL DATA 399
Engine Specifications
EngineVIN CodeTransmission Spark Plug Gap
2.0L L4 Engine KAutomatic0.75–0.90 mm (0.030–0.035 in)
3.0L V6 Engine 6Automatic 0.65–0.75 mm (0.26–0.030 in)
3.6L V6 Engine SAutomatic0.80–0.90 mm (0.031–0.035 in)
4.2L V8 Engine JAutomatic 0.74–0.75 mm (0.029–0.030 in)
Engine Drive Belt Routing
2.0L L4 Engine
3.0L V6 Engine3.6L V6 Engine