2016 CADILLAC CT6 fuel

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Service and Maintenance 347(3) Check all fuel and vapor lines
and hoses for proper hook-up,
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 0 275 .
(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. See Brake Fluid 0 283 .

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Service and Maintenance 349Footnotes — Maintenance
Schedule Additional Required
Services - Severe
(1) Vehicles with different size front
and rear tires do not have tire
rotation. See Tire Rotation 0 313 .
(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 airflow, window
fogging, or odors. Your GM dealer
can help determine when to replace
the filter.
(3) Check all fuel and vapor lines
and hoses for proper hook-up,
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 0 275 .
(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. See Brake Fluid 0 283 .Special Application
Services .
Severe Commercial Use
Vehicles Only: Lubricate chassis
components every 5 000 km/
3,000 mi.
.
Have underbody flushing service
performed. See "Underbody
Maintenance" in Exterior
Care 0 333 .

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
350 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 0 353 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.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Service and Maintenance 351Lamps
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 0 338 and
Exterior Care 0 333 .
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-9235592) -
2016 - crc - 11/6/15
Technical Data 359Application Capacities
Metric English
Engine Oil with Filter
2.0L L4 Engine 4.7 L 5.0 qt
3.0L V6 Twin Turbo Engine 5.7 L 6.0 qt
3.6L V6 Engine 6.15 L 6.5 qt
Fuel Tank 72.7 L 19.2 gal
Transfer Case – AWD 0.8 L 0.85 qt
Wheel Nut Torque 150 Y 110 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.
Engine SpecificationsEngine VIN Code Transmission Spark Plug Gap
2.0L L4 Engine X Automatic 0.75 – 0.90 mm (0.030 –
0.035 in)
3.0L V6 Twin Turbo Engine 6 Automatic 0.65 – 0.75 mm (0.26 –
0.030 in)
3.6L V6 Engine S Automatic 0.80 – 0.90 mm (0.031 –
0.035 in)

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Customer Information 365Service 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.
Coverage
Services are provided for the
duration of the vehicle ’ s powertrain
warranty. In the U.S., anyone driving the
vehicle is covered. In Canada, a
person driving the vehicle without
permission from the owner is not
covered.
Roadside Service is not a part of the
New Vehicle Limited Warranty.
General Motors North America and
Cadillac reserve the right to make
any changes or discontinue the
Roadside Service program at any
time without notification.
General Motors North America and
Cadillac reserve the right to limit
services or payment to an owner or
driver if they decide the claims are
made too often, or the same type of
claim is made many times.
Cadillac Owner Privileges ™.
Emergency Fuel Delivery:
Delivery of enough fuel for the
vehicle to get to the nearest
service station.
.
Lock-Out Service: Service to
unlock the vehicle if you are
locked out. A remote unlock may
be available if you have OnStar. For security reasons, the driver
must present identification
before this service is given.
.
Emergency Tow from a Public
Road or Highway: Tow to the
nearest Cadillac dealer for
warranty service, or if the vehicle
was in a crash and cannot be
driven. Assistance is not given
when the vehicle is stuck in the
sand, mud, or snow.
.
Flat Tire Change: Service to
change a flat tire with a spare
tire. The spare tire, if equipped,
must be in good condition and
properly inflated. It is your
responsibility for the repair or
replacement of the tire if it is not
covered by the warranty.
.
Battery Jump Start: Service to
jump start a dead battery.
.
Trip Interruption Benefits and
Service: If your trip is
interrupted due to a warranty
failure, incidental expenses may
be reimbursed during the
Powertrain warranty period.
Items considered are hotel,
meals, and rental car or a

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
366 Customer Information vehicle being delivered back to
the customer, up to 805 km
(500 mi).
Cadillac Technician Roadside
Service (U.S. Only) Cadillac's exceptional Roadside
Service is more than an auto club or
towing service. It provides every
Cadillac owner in the United States
with the advantage of contacting a
Cadillac advisor and, where
available, a Cadillac trained dealer
technician who can provide on-site
service.
A dealer technician will travel to
your location within a 30-mile radius
of a participating Cadillac
dealership. If beyond this radius, we
will arrange to have your car towed
to the nearest Cadillac dealership.
Each technician travels with a
specially equipped service vehicle
complete with the necessary
Cadillac parts and tools required to
handle most roadside repairs. Services Not Included in
Roadside Service .
Impound towing caused by
violation of any laws.
.
Legal fines.
.
Mounting, dismounting,
or changing of snow tires,
chains, or other traction devices.
Service is not provided if a vehicle
is in an area that is not accessible
to the service vehicle or is not a
regularly traveled or maintained
public road, which includes ice and
winter roads. Off-road use is not
covered.
Services Specific to
Canadian-Purchased Vehicles .
Fuel delivery: Reimbursement
is up to 7 liters. Diesel fuel
delivery may be restricted.
Propane and other fuels are not
provided through this service.
.
Lock-Out Service: Vehicle
registration is required. .
Trip Interruption Benefits and
Service: Pre-authorization,
original detailed receipts, and a
copy of the repair orders are
required. Once authorization has
been received, the Roadside
Service advisor will help you
make arrangements and explain
how to receive payment.
.
Alternative Service: If
assistance cannot be provided
right away, the Roadside Service
advisor may give you permission
to get local emergency road
service. You will receive
payment, up to $100, after
sending the original receipt to
Roadside Service. Mechanical
failures may be covered,
however any cost for parts and
labor for repairs not covered by
the warranty are the owner
responsibility.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Customer Information 367
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.