fuel pressure CADILLAC CT6 2019 Owner's Manual

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
IN BRIEF 5
In Brief
Instrument Panel
Instrument Panel Overview . . . . . . . . . 6
Initial Drive Information
Initial Drive Information . . . . . . . . . . . 8
Stop/Start System . . . . . . . . . . . . . . . . . . . 8
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Remote Vehicle Start . . . . . . . . . . . . . . . 9
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Seat Adjustment . . . . . . . . . . . . . . . . . . . 11
Memory Features . . . . . . . . . . . . . . . . . . 12
Second Row Seats . . . . . . . . . . . . . . . . . 12
Heated and Ventilated Seats . . . . . . 13
Head Restraint Adjustment . . . . . . . 13
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Passenger Sensing System . . . . . . . . 14
Mirror Adjustment . . . . . . . . . . . . . . . . 14
Steering Wheel Adjustment . . . . . . . 15
Interior Lighting . . . . . . . . . . . . . . . . . . . 15
Exterior Lighting . . . . . . . . . . . . . . . . . . . 16
Windshield Wiper/Washer . . . . . . . . 16
Climate Controls . . . . . . . . . . . . . . . . . . . 18
Transmission . . . . . . . . . . . . . . . . . . . . . . . 19
Vehicle Features
Infotainment System . . . . . . . . . . . . . . 19
Steering Wheel Controls . . . . . . . . . . 19
Cruise Control . . . . . . . . . . . . . . . . . . . . . 19
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . . . . . 20
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Night Vision System . . . . . . . . . . . . . . . 20
Forward Automatic Braking (FAB) . . . . . . . . . . . . . . . . . . . . 21
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Lane Keep Assist (LKA) . . . . . . . . . . . 21
Lane Change Alert (LCA) . . . . . . . . . . 21
Surround Vision . . . . . . . . . . . . . . . . . . . 21
Rear Vision Camera (RVC) . . . . . . . . 22
Rear Cross Traffic Alert (RCTA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . 22
Automatic Parking Assist (APA) . . . . . . . . . . . . . . . . . . . . . . 22
Reverse Automatic Braking (RAB) . . . . . . . . . . . . . . . . . . . . 22
Rear Pedestrian Alert . . . . . . . . . . . . . . 23
Surround Vision Recorder . . . . . . . . . 23
Power Outlets . . . . . . . . . . . . . . . . . . . . . . 23
Universal Remote System . . . . . . . . . 23
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Performance and Maintenance
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . . . . 24
Tire Pressure Monitor . . . . . . . . . . . . . 25
Fuel (2.0L L4 Turbo Engine) . . . . . . 25
Fuel (3.0L Twin Turbo V6 and 4.2L Twin Turbo V8 Engines) . . . . . . . . . 26
Fuel (3.6L V6 Engine) . . . . . . . . . . . . . 26
E85 or FlexFuel . . . . . . . . . . . . . . . . . . . . 26
Engine Oil Life System . . . . . . . . . . . . 26
Driving for Better Fuel Economy . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Roadside Service . . . . . . . . . . . . . . . . . . . 27

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
IN BRIEF 25
andiilluminate in the
instrument cluster. The
appropriate DIC message displays.
. Press and release
Yagain to turn
on both systems.
See Traction Control/Electronic Stability
Control 0220.
The vehicle has Driver Mode Control.
See Driver Mode Control 0222.
Tire Pressure Monitor
This vehicle may have a Tire Pressure
Monitor System (TPMS).
The low tire pressure warning light
alerts to a significant loss in pressure
of one of the vehicle's tires. If the
warning light comes on, stop as soon
as possible and inflate the tires to the
recommended pressure shown on the
Tire and Loading Information label. See
Vehicle Load Limits 0197. The
warning light will remain on until the
tire pressure is corrected.
The low tire pressure warning light
may come on in cool weather when
the vehicle is first started, and then
turn off as the vehicle is driven. This
may be an early indicator that the tire
pressures are getting low and the tires
need to be inflated to the proper
pressure.
The TPMS does not replace normal
monthly tire maintenance. Maintain
the correct tire pressures.
See Tire Pressure Monitor System
0 348.
Tire Fill Alert (If Equipped)
This feature provides visual and
audible alerts outside the vehicle to
help when inflating an underinflated
tire to the recommended cold tire
pressure. See “Tire Fill Alert (If
Equipped)” underTire Pressure Monitor
Operation 0349.
Fuel (2.0L L4 Turbo Engine)
Premium Recommended
Use premium 93 octane —(R+M)/2 —
unleaded gasoline in your vehicle. TOP
TIER Detergent Gasoline is
recommended. Unleaded gasoline with
an octane rating as low as 87 may be
used, but it will reduce performance
and fuel economy. See Recommended
Fuel (2.0L L4 Turbo Engine) 0277 or
Recommended Fuel (3.0L Twin Turbo
V6 and 4.2L Twin Turbo V8 Engines)
0 277 or
Recommended Fuel (3.6L V6 Engine)
0 277.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
118 INSTRUMENTS AND CONTROLS
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . . . 119
Steering Wheel Controls . . . . . . . . . 119
Heated Steering Wheel . . . . . . . . . . 119
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Windshield Wiper/Washer . . . . . . . 120
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Power Outlets . . . . . . . . . . . . . . . . . . . . . 122
Wireless Charging . . . . . . . . . . . . . . . . 123
Cigarette Lighter . . . . . . . . . . . . . . . . . . 125
Ashtrays . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . . . . 126
Instrument Cluster (Base
Level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Instrument Cluster (Uplevel) . . . . 130
Speedometer . . . . . . . . . . . . . . . . . . . . . . 133
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . 133
Trip Odometer . . . . . . . . . . . . . . . . . . . . 133
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 133
Fuel Gauge . . . . . . . . . . . . . . . . . . . . . . . . 133 Engine Oil Pressure Gauge (Base
Level Cluster Only) . . . . . . . . . . . . . 134
Engine Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Voltmeter Gauge (Base Level
Cluster Only) . . . . . . . . . . . . . . . . . . . . 136
Seat Belt Reminders . . . . . . . . . . . . . . 137
Airbag Readiness Light . . . . . . . . . . 138
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . . . . 138
Charging System Light . . . . . . . . . . . 139
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . . . . 139
Brake System Warning Light (3.0L Twin Turbo and 3.6L
V6 Engines) . . . . . . . . . . . . . . . . . . . . . 141
Brake System Warning Light (2.0L L4 Turbo and 4.2L Twin
Turbo V8 Engines) . . . . . . . . . . . . . . 142
Electric Parking Brake Light . . . . . 143
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . . . . 143
Gear Shifting Light . . . . . . . . . . . . . . . 144
Automatic Vehicle Hold (AVH) Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Lane Keep Assist (LKA) Light . . . 144
Vehicle Ahead Indicator . . . . . . . . . 144
Pedestrian Ahead Indicator . . . . . . 145 Traction Off Light . . . . . . . . . . . . . . . . 145
StabiliTrak OFF Light . . . . . . . . . . . . 145
Traction Control System (TCS)/
StabiliTrak Light . . . . . . . . . . . . . . . . 146
Engine Coolant Temperature
Warning Light . . . . . . . . . . . . . . . . . . 146
Driver Mode Control Light . . . . . . . 146
Tire Pressure Light . . . . . . . . . . . . . . . 147
Engine Oil Pressure Light . . . . . . . . 147
Low Fuel Warning Light . . . . . . . . . 148
Security Light . . . . . . . . . . . . . . . . . . . . . 148
High-Beam On Light . . . . . . . . . . . . . 148
Lamps On Reminder . . . . . . . . . . . . . 149
Cruise Control Light . . . . . . . . . . . . . . 149
Door Ajar Light . . . . . . . . . . . . . . . . . . . 149
Information Displays
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . . . . 150
Head-Up Display (HUD) . . . . . . . . . 152
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . . . . . . 156
Engine Power Messages . . . . . . . . . . 156
Vehicle Speed Messages . . . . . . . . . 156
Vehicle Personalization
Vehicle Personalization . . . . . . . . . . 157
Universal Remote System
Universal Remote System . . . . . . . . 162

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
134 INSTRUMENTS AND CONTROLS
Uplevel Balanced Configuration
When the ignition is on, the fuel
gauge indicates about how much fuel
is left in the tank.
There is an arrow near the fuel gauge
pointing to the side of the vehicle the
fuel door is on.
When the indicator nears empty, the
low fuel light comes on. There still is
a little fuel left, but the vehicle should
be refueled soon. Here are four things that some owners
ask about. None of these show a
problem with the fuel gauge:
.
At the service station, the fuel
pump shuts off before the gauge
reads full.
. It takes a little more or less fuel to
fill up than the gauge indicated.
For example, the gauge may have
indicated the tank was half full,
but it actually took a little more or
less than half the tank's capacity
to fill the tank.
. The gauge moves a little while
turning a corner or speeding up.
. The gauge takes a few seconds to
stabilize after the ignition is
turned on, and goes back to empty
when the ignition is turned off.
Engine Oil Pressure Gauge
(Base Level Cluster Only)
Metric, Standard Theme Shown

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
344 VEHICLE CARE
diagonal or bias ply construction;
and the letter B means belted-bias
ply construction.
(5) Rim Diameter
:Diameter of
the wheel in inches.
(6) Service Description
:These
characters represent the load
index and speed rating of the tire.
The load index represents the load
carrying capacity a tire is certified
to carry. The speed rating is the
maximum speed a tire is certified
to carry a load.
Tire Terminology and
Definitions
Air Pressure:The amount of air
inside the tire pressing outward
on each square inch of the tire.
Air pressure is expressed in kPa
(kilopascal) or psi (pounds per
square inch).
Accessory Weight
:The combined
weight of optional accessories.
Some examples of optional accessories are automatic
transmission, power windows,
power seats, and air conditioning.
Aspect Ratio
:The relationship of
a tire's height to its width.
Belt
:A rubber coated layer of
cords between the plies and the
tread. Cords may be made from
steel or other reinforcing
materials.
Bead
:The tire bead contains steel
wires wrapped by steel cords that
hold the tire onto the rim.
Bias Ply Tire
:A pneumatic tire in
which the plies are laid at
alternate angles less than
90 degrees to the centerline of the
tread.
Cold Tire Pressure
:The amount
of air pressure in a tire, measured
in kPa (kilopascal) or psi (pounds
per square inch) before a tire has
built up heat from driving. See
Tire Pressure 0346. Curb Weight
:The weight of a
motor vehicle with standard and
optional equipment including the
maximum capacity of fuel, oil, and
coolant, but without passengers
and cargo.
DOT Markings
:A code molded
into the sidewall of a tire
signifying that the tire is in
compliance with the U.S.
Department of Transportation
(DOT) Motor Vehicle Safety
Standards. The DOT code includes
the Tire Identification Number
(TIN), an alphanumeric designator
which can also identify the tire
manufacturer, production plant,
brand, and date of production.
GVWR
:Gross Vehicle Weight
Rating. See Vehicle Load Limits
0 197.
GAWR FRT
:Gross Axle Weight
Rating for the front axle. See
Vehicle Load Limits 0197.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
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346 VEHICLE CARE
Speed Rating:An alphanumeric
code assigned to a tire indicating
the maximum speed at which a
tire can operate.
Traction
:The friction between
the tire and the road surface. The
amount of grip provided.
Tread
:The portion of a tire that
comes into contact with the road.
Treadwear Indicators
:Narrow
bands, sometimes called wear
bars, that show across the tread of
a tire when only 1.6 mm (1/16 in)
of tread remains. See When It Is
Time for New Tires 0354.
UTQGS (Uniform Tire Quality
Grading Standards)
:A tire
information system that provides
consumers with ratings for a tire's
traction, temperature, and
treadwear. Ratings are determined
by tire manufacturers using
government testing procedures.
The ratings are molded into the
sidewall of the tire. See Uniform
Tire Quality Grading 0357. Vehicle Capacity Weight
:The
number of designated seating
positions multiplied by
68 kg (150 lb) plus the rated cargo
load. See Vehicle Load Limits 0197.
Vehicle Maximum Load on the
Tire
:Load on an individual tire
due to curb weight, accessory
weight, occupant weight, and
cargo weight.
Vehicle Placard
:A label
permanently attached to a vehicle
showing the vehicle capacity
weight and the original equipment
tire size and recommended
inflation pressure. See “Tire and
Loading Information Label” under
Vehicle Load Limits 0197.
Tire Pressure
Tires need the correct amount of
air pressure to operate effectively.
{Warning
Neither tire underinflation nor
overinflation is good.
Underinflated tires, or tires that
do not have enough air, can
result in:
.Tire overloading and
overheating which could
lead to a blowout.
.Premature or
irregular wear.
.Poor handling.
.Reduced fuel economy.
Overinflated tires, or tires that
have too much air, can result in:
.Unusual wear.
.Poor handling.
.Rough ride.
.Needless damage from
road hazards.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
348 VEHICLE CARE
Warning (Continued)
operation. When speed limits and
road conditions allow the vehicle to
be driven at high speeds, make sure
the tires are rated for high-speed
operation, are in excellent
condition, and are set to the correct
cold tire inflation pressure for the
vehicle load.
Vehicles with 235/50R18 97V or 245/
45R19 98V size tires require inflation
pressure adjustment when driving the
vehicle at speeds of
160 km/h (100 mph) or higher. Set the
cold inflation pressure for all four
tires to 270 kPa (39 psi).
Vehicles with 245/40R20 95W size
tires require inflation pressure
adjustment when driving the vehicle
at speeds of 160 km/h (100 mph) or
higher. Set the cold inflation pressure
to 290 kPa (42 psi).
Vehicles with 245/40ZR20 95Y size
tires require inflation pressure
adjustment when driving the vehicle
at speeds of 160 km/h (100 mph) or higher. Set the cold inflation pressure
for the front tires to 280 kPa (41 psi)
and the rear tires to 300 kPa (44 psi).
Return the tires to the recommended
cold tire inflation pressure when
high-speed driving has ended. See
Vehicle Load Limits
0197 and
Tire Pressure 0346.
Tire Pressure Monitor
System
The Tire Pressure Monitor System
(TPMS) uses radio and sensor
technology to check tire pressure
levels. The TPMS sensors monitor the
air pressure in your tires and transmit
tire pressure readings to a receiver
located in the vehicle.
Each tire, including the spare (if
provided), should be checked monthly
when cold and inflated to the
inflation pressure recommended by
the vehicle manufacturer on the
vehicle placard or tire inflation
pressure label. (If your vehicle has
tires of a different size than the size
indicated on the vehicle placard or tire inflation pressure label, you should
determine the proper tire inflation
pressure for those tires.)
As an added safety feature, your
vehicle has been equipped with a tire
pressure monitoring system (TPMS)
that illuminates a low tire pressure
telltale when one or more of your tires
is significantly under-inflated.
Accordingly, when the low tire
pressure telltale illuminates, you
should stop and check your tires as
soon as possible, and inflate them to
the proper pressure. Driving on a
significantly under-inflated tire causes
the tire to overheat and can lead to
tire failure. Under-inflation also
reduces fuel efficiency and tire tread
life, and may affect the vehicle's
handling and stopping ability.
Please note that the TPMS is not a
substitute for proper tire maintenance,
and it is the driver's responsibility to
maintain correct tire pressure, even if
under-inflation has not reached the
level to trigger illumination of the
TPMS low tire pressure telltale.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
376 VEHICLE CARE
Steering, Suspension, and
Chassis Components
Visually inspect steering, suspension,
and chassis components for damaged,
loose, or missing parts or signs of
wear at least once a year.
Inspect power steering for proper
attachment, connections, binding,
leaks, cracks, chafing, etc.
Visually check constant velocity joint
boots and axle seals for leaks.
Body Component Lubrication
Lubricate all key lock cylinders, hood
hinges, liftgate hinges, and the steel
fuel door hinges, unless the
components are plastic. Applying
silicone grease on weatherstrips with a
clean cloth will make them last
longer, seal better, and not stick or
squeak.
Underbody Maintenance
At least twice a year, spring and fall,
use plain water to flush any corrosive
materials from the underbody. Takecare to thoroughly clean any areas
where mud and other debris can
collect.
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 fluid. Contaminated fluid will
decrease the life of the transfer case
and/or axles and should be replaced.
Sheet Metal Damage
If the vehicle is damaged and requires
sheet metal repair or replacement,
make sure the body repair shop
applies anti-corrosion material to
parts repaired or replaced to restore
corrosion protection.
Original manufacturer replacement
parts will provide the corrosion
protection while maintaining the
vehicle warranty.
Finish Damage
Quickly repair minor chips and
scratches with touch-up materials
available from your dealer to avoidcorrosion. Larger areas of finish
damage can be corrected in your
dealer's body and paint shop.
Chemical Paint Spotting
Airborne pollutants can fall upon and
attack painted vehicle surfaces
causing blotchy, ring-shaped
discolorations, and small, irregular
dark spots etched into the paint
surface. See
“Finish Care”previously in
this section.
Interior Care
To prevent dirt particle abrasions,
regularly clean the vehicle's interior.
Immediately remove any soils.
Newspapers or dark garments can
transfer color to the vehicle’s interior.
Use a soft bristle brush to remove
dust from knobs and crevices on the
instrument cluster. Using a mild soap
solution, immediately remove hand
lotions, sunscreen, and insect
repellent from all interior surfaces or
permanent damage may result.

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) -
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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.