service schedule CADILLAC CT6 2019 User Guide

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
382 SERVICE AND MAINTENANCE
Proper vehicle maintenance helps to
keep the vehicle in good working
condition, improves fuel economy, and
reduces vehicle emissions.
Because of the way people use
vehicles, maintenance needs vary.
There may need to be more frequent
checks and services. The Additional
Required Services - Normal are for
vehicles that:
.Carry passengers and cargo within
recommended limits on the Tire
and Loading Information label. See
Vehicle Load Limits 0197.
. Are driven on reasonable road
surfaces within legal driving limits.
. Use the recommended fuel. See
Recommended Fuel (2.0L L4 Turbo
Engine) 0277 or
Recommended Fuel (3.0L Twin
Turbo V6 and 4.2L Twin Turbo
V8 Engines) 0277 or
Recommended Fuel (3.6L V6 Engine)
0 277. Refer to the information in the
Maintenance Schedule Additional
Required Services - Normal chart.
The Additional Required Services -
Severe are for vehicles that are:
.
Mainly driven in heavy city traffic
in hot weather.
. Mainly driven in hilly or
mountainous terrain.
. Frequently towing a trailer.
. Used for high speed or competitive
driving.
. Used for taxi, police, or delivery
service.
Refer to the information in the
Maintenance Schedule Additional
Required Services - Severe chart.{Warning
Performing maintenance work can
be dangerous and can cause serious
injury. Perform maintenance work
only if the required information,
proper tools, and equipment are
available. If they are not, see your
dealer to have a trained technician
do the work. See Doing Your Own
Service Work 0290.

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 385
Maintenance Schedule
Additional Required Services -
Normal12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi
60 000 km/37,500 mi
72 000 km/45,000 mi
84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi
120 000 km/75,000 mi
132 000 km/82,500 mi
144 000 km/90,000 mi
156 000 km/97,500 mi
168 000 km/105,000 mi
180 000 km/112,500 mi
192 000 km/120,000 mi
204 000 km/127,500 mi
216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 mi
Rotate tires, if recommended for the vehicle, and
perform Required Services. Check engine oil level
and oil life percentage. Change engine oil and filter,
if needed. (1)@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Replace passenger compartment air filter. (2)@ @@@@@
Inspect evaporative control system. (3)@ @@
Replace engine air cleaner filter. (4.2L Engine
Only) (4)@@@@@
Replace engine air cleaner filter. (Except 4.2L
Engine) (5)@ @@
Replace spark plugs. Inspect spark plug wires.
(Except 3.6L Engine)@ @
Replace spark plugs. Inspect spark plug wires. (3.6L
Engine Only)@
Drain and fill engine cooling system. (6)@
Change transfer case fluid, if equipped with
AWD. (7)@
Change rear axle fluid. (Except V-Series)@
Replace rear axle fluid. (V-Series Only)@@@
Visually inspect accessory drive belts. (8)@
Replace brake fluid. (9)
Replace windshield wiper blades. (10)
@ @ @ @ @ @ @ @ @ @
Replace hood and/or body lift support gas struts.@ @

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
386 SERVICE AND MAINTENANCE
Footnotes—Maintenance Schedule
Additional Required Services -
Normal
(1) Vehicles with different size front
and rear tires do not have tire
rotation. See Tire Rotation0353.
(2) Or every two years, whichever
comes first. More frequent passenger
compartment air filter replacement
may be needed if driving in areas with
heavy traffic, poor air quality, high
dust levels, or environmental
allergens. Passenger compartment air
filter replacement may also be needed
if there is reduced airf low, window
fogging, or odors. Your GM dealer can
help determine when to replace the
filter. (3)
Visually check all fuel and vapor
lines and hoses for proper attachment,
connection, routing, and condition.
(4) Or every three years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed.
(5) Or every four years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed.
(6) Or every five years, whichever
comes first. See Cooling System0307.
(7) Do not directly power wash the
transfer case and/or front/rear axle
output seals. High pressure water can
overcome the seals and contaminate
the transfer case fluid. Contaminated
fluid will decrease the life of the
transfer case and/or axles and should
be replaced. (8)
Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage; replace,
if needed.
(9) Replace brake fluid every five
years for DOT 3 fluid or every three
years for DOT 4 fluid. See Brake Fluid
0 315.
(10) Or every 12 months, whichever
comes first. See Wiper Blade
Replacement 0319.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
SERVICE AND MAINTENANCE 387
Maintenance Schedule
Additional Required Services -
Severe12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi
60 000 km/37,500 mi
72 000 km/45,000 mi
84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi
120 000 km/75,000 mi
132 000 km/82,500 mi
144 000 km/90,000 mi
156 000 km/97,500 mi
168 000 km/105,000 mi
180 000 km/112,500 mi
192 000 km/120,000 mi
204 000 km/127,500 mi
216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 mi
Rotate tires, if recommended for the vehicle, and
perform Required Services. Check engine oil level
and oil life percentage. Change engine oil and filter,
if needed. (1)@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Replace passenger compartment air filter. (2)@ @@@@@
Inspect evaporative control system. (3)@ @@
Replace engine air cleaner filter. (4.2L Engine
Only) (4)@@@@@
Replace engine air cleaner filter. (Except 4.2L
Engine) (5)@ @@
Replace spark plugs. Inspect spark plug wires.
(Except 3.6L Engine)@ @
Replace spark plugs. Inspect spark plug wires. (3.6L
Engine Only)@
Change automatic transmission fluid and filter.@@@
Change transfer case fluid, if equipped with
AWD. (6)@@@
Change rear axle fluid.@@@
Change front axle fluid, if equipped with AWD.@@@
Drain and fill engine cooling system. (7)@
Visually inspect accessory drive belts. (8)@
Replace brake fluid. (9)
Replace windshield wiper blades. (10)
@ @ @ @ @ @ @ @ @ @
Replace hood and/or body lift support gas struts.@ @

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
388 SERVICE AND MAINTENANCE
Footnotes—Maintenance Schedule
Additional Required Services -
Severe
(1) Vehicles with different size front
and rear tires do not have tire
rotation. See Tire Rotation0353.
(2) Or every two years, whichever
comes first. More frequent passenger
compartment air filter replacement
may be needed if driving in areas with
heavy traffic, poor air quality, high
dust levels, or environmental
allergens. Passenger compartment air
filter replacement may also be needed
if there is reduced airf low, window
fogging, or odors. Your GM dealer can
help determine when to replace the
filter.
(3) Visually check all fuel and vapor
lines and hoses for proper attachment,
connection, routing, and condition.
(4) Or every three years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed. (5)
Or every four years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed.
(6) Do not directly power wash the
transfer case and/or front/rear axle
output seals. High pressure water can
overcome the seals and contaminate
the transfer case fluid. Contaminated
fluid will decrease the life of the
transfer case and/or axles and should
be replaced.
(7) Or every five years, whichever
comes first. See Cooling System0307.
(8) Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage; replace,
if needed.
(9) Replace brake fluid every five
years for DOT 3 fluid or every three
years for DOT 4 fluid. See Brake Fluid
0 315.
(10) Or every 12 months, whichever
comes first. See Wiper Blade
Replacement 0319.Special Application
Services
.
Severe Commercial Use Vehicles
Only: Lubricate chassis
components every oil change.
. Have underbody flushing service
performed. See "Underbody
Maintenance" in Exterior Care
0 372.

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
404 CUSTOMER INFORMATION
Online Owner Center
Online Owner Experience (U.S.)
my.cadillac.com
The Cadillac online owner experience
allows interaction with Cadillac and
keeps important vehicle-specific
information in one place.
Membership Benefits
E:Download owner’s manuals and
view vehicle-specific how-to videos.
G: View maintenance schedules,
alerts, and Vehicle Diagnostic
Information. Schedule service
appointments.
I: View printable dealer-recorded
service records and self-recorded
service records.
D: Select a dealer and view
locations, maps, phone numbers, and
hours.
r: Track your vehicle’s warranty
information.
J: View active recalls or search by
Vehicle Identification Number (VIN).
See Vehicle Identification Number (VIN)
0 396.
H:View GM Card, SiriusXM Satellite
radio (if equipped), and OnStar
account information.
F: Chat with online help
representatives.
See my.cadillac.com to register your
vehicle.
Cadillac Owner Centre (Canada)
www.cadillacowner.ca
Visit the Cadillac Owner Centre:
. Chat live with online help
representatives.
. Locate owner resources such as
lease-end, financing, and warranty
information.
. Retrieve favorite articles, quizzes,
tips, and multimedia galleries
organized into the Featured
Articles and Auto Care Sections.
. Download owner’s manuals. .
Find Cadillac-recommended
maintenance services.
GM Mobility
Reimbursement Program
This program is available to qualified
applicants for cost reimbursement, up
to certain limits, of eligible
aftermarket adaptive equipment
required for the vehicle, such as hand
controls or a wheelchair/scooter lift
for the vehicle.
To learn about the GM Mobility
program, see www.gmmobility.com or
call the GM Mobility Assistance
Center at 1-800-323-9935. Text
Telephone (TTY) users, call
1-800-833-9935.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
CUSTOMER INFORMATION 407
Scheduling Service
Appointments
When the vehicle requires warranty
service, contact your dealer and
request an appointment. By
scheduling a service appointment and
advising the service consultant of
your transportation needs, your dealer
can help minimize your
inconvenience.
If the vehicle cannot be scheduled
into the service department
immediately, keep driving it until it
can be scheduled for service, unless,
of course, the problem is safety
related. If it is, please call your
dealership, let them know this, and
ask for instructions.
If your dealer requests you to bring
the vehicle for service, you are urged
to do so as early in the work day as
possible to allow for same-day repair.
Courtesy Transportation
Program
To enhance your ownership
experience, we and our participating
dealers are proud to offer Courtesy
Transportation, a customer support
program for vehicles with the
Bumper-to-Bumper (Base Warranty
Coverage period in Canada), extended
powertrain, and/or hybrid-specific
warranties in both the U.S. and
Canada.
Several Courtesy Transportation
options are available to assist in
reducing inconvenience when
warranty repairs are required.
Courtesy Transportation is not a part
of the New Vehicle Limited Warranty.
A separate booklet entitled“Limited
Warranty and Owner Assistance
Information ”furnished with each new
vehicle provides detailed warranty
coverage information.
Transportation Options
Warranty service can generally be
completed while you wait. However,
if you are unable to do so, your dealer
may offer the following transportation
options:
Shuttle Service
This includes one-way or round-trip
shuttle service within reasonable time
and distance parameters of your
dealer's area.
Public Transportation or Fuel
Reimbursement
If overnight warranty repairs are
needed, and public transportation is
used, the expense must be supported
by original receipts and within the
maximum amount allowed by GM for
shuttle service. If U.S. customers
arrange their own transportation,
limited reimbursement for reasonable
fuel expenses may be available. Claim
amounts should reflect actual costs
and be supported by original receipts.
See your dealer for information.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
410 CUSTOMER INFORMATION
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.
Publication Ordering
Information
Service Manuals
Service manuals have the diagnosis
and repair information on the engine,
transmission, axle, suspension, brakes,
electrical system, steering system,
body, etc.
Customer Literature
Owner’s manuals are written
specifically for owners and are
intended to provide basic operational
information about the vehicle. The
owner’s manual includes the
Maintenance Schedule for all models.Customer literature publications
available for purchase include owner’s
manuals, warranty manuals,
infotainment manuals, and portfolios.
Portfolios include an owner’s manual,
warranty manual, infotainment
manual, if applicable, and zip lock bag
or pouch.
Current and Past Models
Service manuals and customer
literature are available for many
current and past model year GM
vehicles.
To order, call 1-800-551-4123
Monday–Friday, 8:00 a.m.–6:00 p.m.
eastern time
For credit card orders only (VISA,
MasterCard, or Discover), see Helm,
Inc. at: www.helminc.com.
To order by mail, write to:
Helm, Incorporated
Attention: Customer Service
47911 Halyard Drive
Plymouth, MI 48170
Make checks payable in U.S. funds.