2018 CADILLAC CT6 brake

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
396 SERVICE AND MAINTENANCE
Additional Maintenance
and Care
Your vehicle is an important
investment and caring for it properly
may help to avoid future costly
repairs. To maintain vehicle
performance, additional maintenance
services may be required.
It is recommended that your dealer
perform these services—their trained
dealer technicians know your vehicle
best. Your dealer can also perform a
thorough assessment with a
multi-point inspection to recommend
when your vehicle may need
attention.
The following list is intended to
explain the services and conditions to
look for that may indicate services are
required.
Battery
The 12-volt battery supplies power to
start the engine and operate any
additional electrical accessories.
. To avoid break-down or failure to
start the vehicle, maintain a
battery with full cranking power. .
Trained dealer technicians have
the diagnostic equipment to test
the battery and ensure that the
connections and cables are
corrosion-free.
Belts
. Belts may need replacing if they
squeak or show signs of cracking
or splitting.
. Trained dealer technicians have
access to tools and equipment to
inspect the belts and recommend
adjustment or replacement when
necessary.
Brakes
Brakes stop the vehicle and are crucial
to safe driving.
. Signs of brake wear may include
chirping, grinding, or squealing
noises, or difficulty stopping.
. Trained dealer technicians have
access to tools and equipment to
inspect the brakes and recommend
quality parts engineered for the
vehicle. Fluids
Proper fluid levels and approved fluids
protect the vehicle’s systems and
components. See
Recommended Fluids
and Lubricants 0399 for GM approved
fluids.
. Engine oil and windshield washer
fluid levels should be checked at
every fuel fill.
. Instrument cluster lights may
come on to indicate that fluids
may be low and need to be filled.
Hoses
Hoses transport fluids and should be
regularly inspected to ensure that
there are no cracks or leaks. With a
multi-point inspection, your dealer
can inspect the hoses and advise if
replacement is needed.
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

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
SERVICE AND MAINTENANCE 397
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 0384 and
Exterior Care 0380. 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-11292458) -
2018 - crc - 2/14/17
SERVICE AND MAINTENANCE 399
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
UsageFluid/Lubricant
Automatic Transmission DEXRON-HP Automatic Transmission Fluid (GM Part No. 19331925, in Canada 19300537).
Engine Coolant (Gasoline Only Vehicles) 50/50 mixture of clean drinkable water and use only DEX-COOL Coolant. Engine Coolant, High Voltage Battery,
and Power Electronics Cooling System (PLUG-IN Only Vehicles) Use Only Premix DEX-COOL Coolant (GM Part No. 12378390, in
Canada 10953456).
See
Cooling System (Gasoline Only) 0312 orCooling System (PLUG-IN Only)
0 316.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade.
ACDelco dexos1 is recommended. See Engine Oil0307.
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 (Gasoline Only) DOT 3 Hydraulic Brake Fluid (GM Part No. 19299818, in Canada 19299819).
Hydraulic Brake System (PLUG-IN Only) DOT 4 Hydraulic Brake Fluid (GM Part No. 19299570, in Canada 19299571). Key Lock Cylinders, Hood and Door Hinges Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in
Canada 10953474).
Rear Axle SAE 75W-90 Synthetic Axle Lubricant (GM Part No. 88863089, in
Canada 88863090) meeting GM Specification 9986285.
Rear Axle/Front Axle (All-Wheel Drive) SAE 75W-90 Synthetic Axle Lubricant (GM Part No. 88863089, in Canada 88863090).

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
404 TECHNICAL DATA
Vehicle Data
Capacities and Specifications
The following approximate capacities are given in metric and English conversions. SeeRecommended Fluids and Lubricants
0 399 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 8.6 L 9.1 qt
2.0L L4 Engine with Rear A/C 10.3 L 10.9 qt
2.0L L4 PLUG–IN Engine 9.8 L 10.4 qt
2.0L L4 PLUG–IN Engine –Power Electronics 4.0 L 4.2 qt
2.0L L4 PLUG–IN Engine –RESS 3.1 L 3.3 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 with Rear A/C and Auxiliary Radiator 13.2 L 13.9 qt
3.0L V6 Engine with Auxiliary Radiator 11.5 L 12.2 qt

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
416 CUSTOMER INFORMATION
Give only the necessary information
to police and other parties involved in
the crash.
For emergency towing seeRoadside
Service 0411.
Gather the following information:
. Driver name, address, and
telephone number
. Driver license number
. Owner name, address, and
telephone number
. Vehicle license plate number
. Vehicle make, model, and
model year
. Vehicle Identification
Number (VIN)
. Insurance company and policy
number
. General description of the damage
to the other vehicle
Choose a reputable repair facility that
uses quality replacement parts. See
“Collision Parts ”earlier in this section. If the airbag has inflated, see
What
Will You See after an Airbag Inf lates?
0 89.
Managing the Vehicle Damage
Repair Process
In the event that the vehicle requires
damage repairs, GM recommends that
you take an active role in its repair.
If you have a pre-determined repair
facility of choice, take the vehicle
there, or have it towed there. Specify
to the facility that any required
replacement collision parts be original
equipment parts, either new Genuine
GM parts or recycled original GM
parts. Remember, recycled parts will
not be covered by the GM vehicle
warranty.
Insurance pays the bill for the repair,
but you must live with the repair.
Depending on your policy limits, your
insurance company may initially value
the repair using aftermarket parts.
Discuss this with the repair
professional, and insist on Genuine
GM parts. Remember, if the vehicle is
leased, you may be obligated to have the vehicle repaired with Genuine GM
parts, even if your insurance coverage
does not pay the full cost.
If another party's insurance company
is paying for the repairs, you are not
obligated to accept a repair valuation
based on that insurance company's
collision policy repair limits, as you
have no contractual limits with that
company. In such cases, you can have
control of the repair and parts choices
as long as the cost stays within
reasonable limits.
Service Publications
Ordering Information
Service Manuals
Service Manuals have the diagnosis
and repair information on the engines,
transmission, axle, suspension, brakes,
electrical, steering, body, etc.
Owner Information
Owner publications are written
specifically for owners and intended
to provide basic operational

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
CUSTOMER INFORMATION 419
Vehicle Data Recording
and Privacy
The vehicle has a number of
computers that record information
about the vehicle’s performance and
how it is driven. For example, the
vehicle uses computer modules to
monitor and control engine and
transmission performance, to monitor
the conditions for airbag deployment
and deploy them in a crash, and,
if equipped, to provide antilock
braking to help the driver control the
vehicle. These modules may store data
to help the dealer technician service
the vehicle. Some modules may also
store data about how the vehicle is
operated, such as rate of fuel
consumption or average speed. These
modules may retain personal
preferences, such as radio presets, seat
positions, and temperature settings.
Event Data Recorders
This vehicle is equipped with an event
data recorder (EDR). The main
purpose of an EDR is to record, in
certain crash or near crash-likesituations, such as an air bag
deployment or hitting a road obstacle,
data that will assist in understanding
how a vehicle’s systems performed.
The EDR is designed to record data
related to vehicle dynamics and safety
systems for a short period of time,
typically 30 seconds or less. The EDR
in this vehicle is designed to record
such data as:
.
How various systems in your
vehicle were operating;
. Whether or not the driver and
passenger safety belts were
buckled/fastened;
. How far (if at all) the driver was
depressing the accelerator and/or
brake pedal; and,
. How fast the vehicle was traveling.
These data can help provide a better
understanding of the circumstances in
which crashes and injuries occur.
Note
EDR data are recorded by your vehicle
only if a non-trivial crash situation
occurs; no data are recorded by the
EDR under normal driving conditions
and no personal data (e.g., name, gender, age, and crash location) are
recorded. However, other parties, such
as law enforcement, could combine
the EDR data with the type of
personally identifying data routinely
acquired during a crash investigation.
To read data recorded by an EDR,
special equipment is required, and
access to the vehicle or the EDR is
needed. In addition to the vehicle
manufacturer, other parties, such as
law enforcement, that have the special
equipment, can read the information
if they have access to the vehicle or
the EDR.
GM will not access these data or share
it with others except: with the consent
of the vehicle owner or, if the vehicle
is leased, with the consent of the
lessee; in response to an official
request by police or similar
government office; as part of GM's
defense of litigation through the
discovery process; or, as required by
law. Data that GM collects or receives
may also be used for GM research
needs or may be made available to
others for research purposes, where a
need is shown and the data is not tied
to a specific vehicle or vehicle owner.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
432 INDEX
IndexA
Accessories and Modifications . . . . . 298
Accessory Power . . . . . . . . . . . . . . . . . . . . 224
Adaptive Cruise Control . . . . . . . . . . . . 245
Add-On Electrical Equipment . . . . . . 295
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 426
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 396
Adjustments
Lumbar, Front Seats . . . . . . . . . . . . . . . . 67
Lumbar, Rear Seats . . . . . . . . . . . . . . . . . 76
Thigh Support . . . . . . . . . . . . . . . . . . . . . . 68
Air Cleaner/Filter, Engine . . . . . . . . . . 311
Air Conditioning . . . . . . . . . . . . . . .191, 197
Air Filter, Passenger
Compartment . . . . . . . . . . . . . . . . . . . . . 204
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
How Does an Airbag Restrain? . . . . . 89
Passenger Sensing System . . . . . . . . . 91
What Makes an Airbag Inflate? . . . . 89
What Will You See after anAirbag Inflates? . . . . . . . . . . . . . . . . . . . 89
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Where Are the Airbags? . . . . . . . . . . . . 86 Airbags
Adding Equipment to the
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Passenger Status Indicator . . . . . . . 141
Readiness Light . . . . . . . . . . . . . . . . . . . 141
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
System Check . . . . . . . . . . . . . . . . . . . . . . . 85
Alarm Vehicle Security . . . . . . . . . . . . . . . . . . . . . 51
Alert
Lane Change . . . . . . . . . . . . . . . . . . . . . . 269
Side Blind Zone (SBZA) . . . . . . . . . . 268
All-Season Tires . . . . . . . . . . . . . . . . . . . . . 341
All-Wheel Drive . . . . . . . . . . . . . . . .234, 326
Antilock Brake System (ABS) . . . . . . 234 Warning Light . . . . . . . . . . . . . . . . . . . . 146
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384
Armrest Storage . . . . . . . . . . . . . . . . . . . . . 116
Ashtrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Assistance Systems for Driving . . . . 260
Assistance Systems for Parking and Backing . . . . . . . . . . . . . . . . . . . . . . . 254
Auto Stop Mode . . . . . . . . . . . . . . . . . . . . 150
Automatic Climate Control System . . . . . 191, 197

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
INDEX 433
Automatic (cont'd)Dimming Mirrors . . . . . . . . . . . . . . . . . . . 55
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Forward Braking . . . . . . . . . . . . . . . . . . 262
Headlamp System . . . . . . . . . . . . . . . . 185
Transmission . . . . . . . . . . . . . . . . . . . . . . 231
Transmission Fluid . . . . . . . . . . . . . . . 310
Vehicle Hold Light . . . . . . . . . . . . . . . . 147
Automatic Transmission
Manual Mode . . . . . . . . . . . . . . . . . . . . . 233
Shift Lock Control FunctionCheck . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
Automatic Vehicle Hold (AVH) . . . . 237
B
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Power Protection . . . . . . . . . . . . . . . . . . 189
Battery - North America . . . . . .324, 374
Battery Gauge High Voltage . . . . . . . . . . . . . . . . . . . . . . 135
Blade Replacement, Wiper . . . . . . . . . 327
Boost Gauge . . . . . . . . . . . . . . . . . . . . . . . . . 136
Brake Parking, Electric . . . . . . . . . . . . . . . . . . 235
System Warning Light . . . . . . . . . . . . 145
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . 234 Brakes (cont'd)
Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Regenerative Braking . . . . . . . . . . . . . 237
Braking . . . . . . . . . . . . . . . . . . . . . . . . .207, 208 Automatic Forward . . . . . . . . . . . . . . . 262
Braking System Front Pedestrian (FPB) . . . . . . . . . . . 264
Break-In, New Vehicle . . . . . . . . . . . . . . 216
Bulb Replacement . . . . . . . . . . . . . . . . . . 330
Headlamp Aiming . . . . . . . . . . . . . . . . 329
Headlamps . . . . . . . . . . . . . . . . . . . . . . . . 330
License Plate Lamps . . . . . . . . . . . . . . 330
Buying New Tires . . . . . . . . . . . . . . . . . . . 355C
Cadillac Premium Care
Maintenance . . . . . . . . . . . . . . . . . . . . . . 390
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . 122
California
Fuel Requirements . . . . . . . . . . . . . . . . 287
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . 297
California Proposition
65 Warning . . . . . . . . . . . . .297, 324, 374, Back Cover
Canadian Vehicle Owners . . . . . . . . . . . . . 2
Capacities and Specifications . . . . . . 404 Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . . . . . 230
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Winter Driving . . . . . . . . . . . . . . . . . . . . 211
Cargo Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . . . 117
Caution, Danger, and Warning . . . . . . . . 2
Center Console Storage . . . . . . . . . . . . . 116
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . 360
Charge Cord . . . . . . . . . . . . . . . . . . . . . . . . . 279
Charging
Delay Override . . . . . . . . . . . . . . . . . . . . 275
Electrical Requirements . . . . . . . . . . 285
Plug-In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Programmable . . . . . . . . . . . . . . . . . . . . 152
Utility Interruption . . . . . . . . . . . . . . . 284
Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Charging Status Screens . . . . . . . . . . . . 275
Charging System Light . . . . . . . . . . . . . 142
Check Engine Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . . . . . 143
Child Restraints Infants and Young Children . . . . . . . . 98
Lower Anchors and Tethersfor Children . . . . . . . . . . . . . . . . . . . . . . 103
Older Children . . . . . . . . . . . . . . . . . . . . . . 96
Securing . . . . . . . . . . . . . . . . . . . . . . 109, 111