2018 CADILLAC CT6 maintenance schedule

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
392 SERVICE AND MAINTENANCE
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)@@@
Replace spark plugs. Inspect spark plug wires. (2.0L
and 3.0L Twin Turbo Engines)@ @
Replace spark plugs. Inspect spark plug wires. (3.6L
Engine Only)@
Drain and fill engine cooling system and Power
Electronics cooling system. (5)@
Change transfer case fluid, if equipped with
AWD. (6)@
Change rear axle fluid.@
Visually inspect accessory drive belts. (7)@
Replace brake fluid. (8)

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
SERVICE AND MAINTENANCE 393
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 four years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed. (5)
Or every five years, whichever
comes first.
See Cooling System (Gasoline Only)
0 312 orCooling System (PLUG-IN
Only) 0316.
(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 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage; replace,
if needed.
(8) Replace brake fluid every five
years for DOT 3 fluid or every three
years for DOT 4 fluid. See Brake Fluid
0 323.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
394 SERVICE AND MAINTENANCE
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)@@@
Replace spark plugs. Inspect spark plug wires. (2.0L
and 3.0L Twin Turbo Engines)@ @
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. (5)@@@
Change rear axle fluid.@@@
Change front axle fluid, if equipped with AWD.@@@
Drain and fill engine cooling system and Power
Electronics cooling system. (6)@
Visually inspect accessory drive belts. (7)@
Replace brake fluid. (8)

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
SERVICE AND MAINTENANCE 395
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 four years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed.
(5) 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.
(6)
Or every five years, whichever
comes first.
See Cooling System (Gasoline Only)
0 312 orCooling System (PLUG-IN
Only) 0316.
(7) Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage; replace,
if needed.
(8) Replace brake fluid every five
years for DOT 3 fluid or every three
years for DOT 4 fluid. See Brake Fluid
0 323.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
0 380.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
402 SERVICE AND MAINTENANCE
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-11292458) -
2018 - crc - 2/14/17
CUSTOMER INFORMATION 411
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 OnStar onboard 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)
0 403.
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)
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.
Roadside Service
U.S.: 1-800-224-1400.
Canada: 1-800-882-1112.
Text Telephone (TTY) Users (U.S.
Only): 1-888-889-2438.
Service is available 24 hours a day,
365 days a year.
Calling for Service
When calling Roadside Service, have
the following information ready:
.Your name, home address, and
home telephone number
. Telephone number of your
location
. Location of the vehicle
. Model, year, color, and license
plate number of the vehicle
. Odometer reading, Vehicle
Identification Number (VIN), and
delivery date of the vehicle
. Description of the problem

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
CUSTOMER INFORMATION 417
information about the vehicle. The
Owner’s Manual includes the
Maintenance Schedule for all models.
In-Portfolio: Includes a Portfolio,
Owner’s Manual, and Warranty
Manual.
RETAIL SELL PRICE: $35.00–
$40.00 (U.S.) plus handling and
shipping fees.
Without Pouch: Owner’s Manual only.
RETAIL SELL PRICE:
$25.00 (U.S.) plus handling and
shipping fees.
Current and Past Models
Service and Owner publications are
available for many current and past
model year GM vehicles.
ORDER TOLL FREE: 1-800-551-4123
Monday –Friday 8:00 AM –6:00 PM
Eastern Time
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Helm, Incorporated
Attention: Customer Service
47911 Halyard Drive
Plymouth, MI 48170
Prices are subject to change without
notice and without incurring
obligation. Allow ample time for
delivery.
All listed prices are quoted in U.S.
funds. Make checks payable in U.S.
funds.
Radio Frequency
Statement
This vehicle has systems that operate
on a radio frequency that complies
with Part 15/Part 18 of the Federal
Communications Commission (FCC)
rules and with Innovation, Science
and Economic Development (ISED)
Canada's RSP-100 / license-exempt
RSS's / ICES-001.
Operation is subject to the following
two conditions:
1. The device may not cause harmful interference.
2. The device must accept any interference received, including
interference that may cause
undesired operation of the
device.
Changes or modifications to any of
these systems by other than an
authorized service facility could void
authorization to use this equipment.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
438 INDEX
Lights (cont'd)Low Fuel Warning . . . . . . . . . . . . . . . . 150
Seat Belt Reminders . . . . . . . . . . . . . . 140
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Service Electric Parking Brake . . . 146
Service Vehicle Soon . . . . . . . . . . . . . 145
Sport Mode . . . . . . . . . . . . . . . . . . . . . . . . 146
StabiliTrak OFF . . . . . . . . . . . . . . . . . . . 148
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 149
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . . . . . . . 148
Traction Off . . . . . . . . . . . . . . . . . . . . . . . 148
Vehicle Ready . . . . . . . . . . . . . . . . . . . . . 151
Winter Driving Mode . . . . . . . . . . . . . 146
Locks Automatic Door . . . . . . . . . . . . . . . . . . . . . 45
Delayed Locking . . . . . . . . . . . . . . . . . . . . 45
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Lockout Protection . . . . . . . . . . . . . . . . . 46
Power Door . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Loss of Control . . . . . . . . . . . . . . . . . . . . . . 209
Low Fuel Warning Light . . . . . . . . . . . 150
Low-Profile Tires . . . . . . . . . . . . . . . . . . . . 342
Lower Anchors and Tethers for Children (LATCH System) . . . . . . . . 103 Lumbar Adjustment . . . . . . . . . . . . . 67, 76
Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . . . . . 396
Maintenance Modes . . . . . . . . . . . . . . . . 228
Maintenance Schedule . . . . . . . . . . . . . 390 Recommended Fluids and
Lubricants . . . . . . . . . . . . . . . . . . . . . . . 399
Malfunction Indicator Lamp . . . . . . . 143
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . 233
Massage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Memory Features . . . . . . . . . . . . . . . . . . . . 13
Memory Seats . . . . . . . . . . . . . . . . . . . . . . . . 69
Messages Engine Power . . . . . . . . . . . . . . . . . . . . . 169
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Vehicle Speed . . . . . . . . . . . . . . . . . . . . . 169
Mirror Rear Camera . . . . . . . . . . . . . . . . . . . . . . . . 56
Mirrors Automatic Dimming . . . . . . . . . . . . . . . . 55
Automatic Dimming Rearview . . . . . 56 Mirrors (cont'd)
Convex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Tilt in Reverse . . . . . . . . . . . . . . . . . . . . . . 56
Mirrors, Interior Rearview . . . . . . . . . . . 56
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241 Driver Control . . . . . . . . . . . . . . . . . . . . . 241
Modes Driver Selected . . . . . . . . . . . . . . . . . . . . 226
Maintenance . . . . . . . . . . . . . . . . . . . . . . 228
Monitor System, Tire Pressure . . . . . 349
N
Navigation OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 423
Net, Convenience . . . . . . . . . . . . . . . . . . . 117
New Vehicle Break-In . . . . . . . . . . . . . . . 216
Night Vision System . . . . . . . . . . . . . . . . 266
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307
Engine Oil Life System . . . . . . . . . . . 309