2019 CADILLAC CT6 engine

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
178 CLIMATE CONTROLS
turned off or the outside temperature
falls below freezing, the air
conditioner will not run.
Press AUTO to return to automatic
operation and the air conditioner runs
as needed.
Automatic Air Recirculation :When
the AUTO indicator light is on, the air
is automatically recirculated as
needed to help quickly cool the inside
of the vehicle.
The climate control system may have
a sensor to detect air pollution. When
using automatic air recirculation, the
air quality control system may
operate. To adjust the sensitivity of
the air quality sensor, see “Climate
and Air Quality” underVehicle
Personalization 0157.
@:Press to alternate between
recirculating air inside the vehicle or
pulling in outside air. The indicator
light on the button is lit when
recirculation mode is active. This
helps to quickly cool the air inside the
vehicle or reduce the outside air and
odors that might enter. Pressing this button cancels automatic
recirculation. Press AUTO to return to
automatic operation; recirculation
runs automatically as needed.
Manual recirculation mode is not
available when in Defrost or Defog
modes.
Auto Defog :
The climate control
system has a sensor to automatically
detect high humidity inside the
vehicle. When high humidity is
detected, the climate control system
may adjust to outside air supply and
turn on the air conditioner. If the
climate control system does not
detect possible window fogging, it
returns to normal operation. To turn
Auto Defog off or on, see “Climate and
Air Quality” underVehicle
Personalization 0157.
Ionizer : If equipped with an ionizer,
this feature helps to clean the air
inside the vehicle and remove
contaminants such as pollen, odors,
and dust. If the climate control
system is on and the ionizer is
enabled, the ionizer status indicator
will be lit on the climate control display. To turn the ionizer on or off,
see
“Climate and Air Quality” under
Vehicle Personalization 0157.
Rear Window Defogger
K:Press to turn the rear window
defogger on or off. The rear window
defogger only works when the engine
is running.
The rear window defogger can be set
to automatic operation. See “Climate
and Air Quality” underVehicle
Personalization 0157. When Auto Rear
Defog is selected, the rear window
defogger turns on automatically when
the interior temperature is cold and
the outside temperature is about 4 °C
(40 °F) and below.
The upper grid lines on the rear
window are antenna lines and are not
intended to heat when the defogger is
activated.
The heated outside mirrors turn on
when the rear window defogger
button is on and help to clear fog or
frost from the surface of the mirrors.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
DRIVING AND OPERATING 189
Driving and
Operating
Driving Information
Distracted Driving . . . . . . . . . . . . . . . . 190
Defensive Driving . . . . . . . . . . . . . . . . 191
Drunk Driving . . . . . . . . . . . . . . . . . . . . 191
Control of a Vehicle . . . . . . . . . . . . . . 191
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Off-Road Recovery . . . . . . . . . . . . . . . . 192
Loss of Control . . . . . . . . . . . . . . . . . . . 193
Track Events and CompetitiveDriving . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Driving on Wet Roads . . . . . . . . . . . 193
Hill and Mountain Roads . . . . . . . . 194
Winter Driving . . . . . . . . . . . . . . . . . . . . 195
If the Vehicle Is Stuck . . . . . . . . . . . 196
Vehicle Load Limits . . . . . . . . . . . . . . 197
Starting and Operating
New Vehicle Break-In . . . . . . . . . . . . 200
Ignition Positions . . . . . . . . . . . . . . . . 201
Starting the Engine . . . . . . . . . . . . . . 202
Stop/Start System . . . . . . . . . . . . . . . . 203
Engine Heater . . . . . . . . . . . . . . . . . . . . 205
Retained Accessory Power (RAP) . . . . . . . . . . . . . . . . . . . . 206 Shifting Into Park . . . . . . . . . . . . . . . . 206
Shifting out of Park . . . . . . . . . . . . . . 207
Parking over Things
That Burn . . . . . . . . . . . . . . . . . . . . . . . 208
Active Fuel Management . . . . . . . . 208
Extended Parking . . . . . . . . . . . . . . . . . 209
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . . . . . . 209
Running the Vehicle While
Parked . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Automatic Transmission
Automatic Transmission . . . . . . . . . 210
Manual Mode . . . . . . . . . . . . . . . . . . . . . 215
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . . . . . 216
Brakes
Antilock Brake System (ABS) . . . . 217
Electric Parking Brake . . . . . . . . . . . . 218
Brake Assist . . . . . . . . . . . . . . . . . . . . . . . 219
Hill Start Assist (HSA) . . . . . . . . . . . 219
Automatic VehicleHold (AVH) . . . . . . . . . . . . . . . . . . . . . 220
Ride Control Systems
Traction Control/ElectronicStability Control . . . . . . . . . . . . . . . . 220
Driver Mode Control . . . . . . . . . . . . . 222
Locking Rear Axle . . . . . . . . . . . . . . . . 226
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . . . . . 227
Adaptive Cruise Control . . . . . . . . . 229
Super Cruise . . . . . . . . . . . . . . . . . . . . . . 237
Driver Assistance Systems
Driver Assistance Systems . . . . . . . 252
Assistance Systems for Parking or Backing . . . . . . . . . . . . . . . . . . . . . . . 253
Rear Pedestrian Alert . . . . . . . . . . . . 260
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Forward Automatic Braking (FAB) . . . . . . . . . . . . . . . . . . . 264
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Night Vision System . . . . . . . . . . . . . 268
Side Blind Zone Alert (SBZA) . . . . 270
Lane Change Alert (LCA) . . . . . . . . 271
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . . . 272
Lane Keep Assist (LKA) . . . . . . . . . . 273
Surround Vision Recorder . . . . . . . 274
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . 276
Recommended Fuel (2.0L L4 Turbo Engine) . . . . . . . . . . . . . . . . . . . 277

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
190 DRIVING AND OPERATING
Recommended Fuel (3.0L TwinTurbo V6 and 4.2L Twin Turbo
V8 Engines) . . . . . . . . . . . . . . . . . . . . . 277
Recommended Fuel (3.6L V6 Engine) . . . . . . . . . . . . . . . . . . . . . . 277
Prohibited Fuels . . . . . . . . . . . . . . . . . . 277
Fuels in Foreign Countries . . . . . . . 278
Fuel Additives . . . . . . . . . . . . . . . . . . . . 278
Filling the Tank . . . . . . . . . . . . . . . . . . 278
Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . . . . . . . 280
Trailer Towing
General Towing Information . . . . 280
Driving Characteristics andTowing Tips . . . . . . . . . . . . . . . . . . . . . 281
Trailer Towing . . . . . . . . . . . . . . . . . . . . 284
Towing Equipment . . . . . . . . . . . . . . . 286
Conversions and Add-Ons
Add-On Electrical Equipment . . . 287
Driving Information
Distracted Driving
Distraction comes in many forms and
can take your focus from the task of
driving. Exercise good judgment and
do not let other activities divert your
attention away from the road. Many
local governments have enacted laws
regarding driver distraction. Become
familiar with the local laws in
your area.
To avoid distracted driving, keep your
eyes on the road, keep your hands on
the steering wheel, and focus your
attention on driving.
. Do not use a phone in demanding
driving situations. Use a
hands-free method to place or
receive necessary phone calls.
. Watch the road. Do not read, take
notes, or look up information on
phones or other electronic devices.
. Designate a front seat passenger
to handle potential distractions. .
Become familiar with vehicle
features before driving, such as
programming favorite radio
stations and adjusting climate
control and seat settings. Program
all trip information into any
navigation device prior to driving.
. Wait until the vehicle is parked to
retrieve items that have fallen to
the floor.
. Stop or park the vehicle to tend to
children.
. Keep pets in an appropriate carrier
or restraint.
. Avoid stressful conversations
while driving, whether with a
passenger or on a cell phone.
{Warning
Taking your eyes off the road too
long or too often could cause a
crash resulting in injury or death.
Focus your attention on driving.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
DRIVING AND OPERATING 191
Refer to the infotainment section for
more information on using that
system and the navigation system,
if equipped, including pairing and
using a cell phone.
Defensive Driving
Defensive driving means“always
expect the unexpected.” The first step
in driving defensively is to wear the
seat belt. See Seat Belts076.
. Assume that other road users
(pedestrians, bicyclists, and other
drivers) are going to be careless
and make mistakes. Anticipate
what they might do and be ready.
. Allow enough following distance
between you and the driver in
front of you.
. Focus on the task of driving.
Drunk Driving
Death and injury associated with
drinking and driving is a global
tragedy.
{Warning
Drinking and then driving is very
dangerous. Your reflexes,
perceptions, attentiveness, and
judgment can be affected by even a
small amount of alcohol. You can
have a serious —or even fatal —
collision if you drive after drinking.
Do not drink and drive or ride with
a driver who has been drinking.
Ride home in a cab; or if you are
with a group, designate a driver
who will not drink.
Control of a Vehicle
Braking, steering, and accelerating are
important factors in helping to control
a vehicle while driving.
Braking
Braking action involves perception
time and reaction time. Deciding to
push the brake pedal is perception
time. Actually doing it is
reaction time. Average driver reaction time is about
three-quarters of a second. In that
time, a vehicle moving at 100 km/h
(60 mph) travels 20 m (66 ft), which
could be a lot of distance in an
emergency.
Helpful braking tips to keep in mind
include:
.
Keep enough distance between
you and the vehicle in front
of you.
. Avoid needless heavy braking.
. Keep pace with traffic.
If the engine ever stops or a brake
fault occurs, the brakes may lose
power assist. More effort will be
required to stop the vehicle. It may
take longer to stop.
Steering
Variable Effort Steering
The vehicle has a steering system that
varies the amount of effort required to
steer the vehicle in relation to the
speed of the vehicle.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
194 DRIVING AND OPERATING
these types of driving conditions and
avoid driving through large puddles
and deep-standing or flowing water.
{Warning
Wet brakes can cause crashes. They
might not work as well in a quick
stop and could cause pulling to one
side. You could lose control of the
vehicle.
After driving through a large puddle
of water or a car/vehicle wash,
lightly apply the brake pedal until
the brakes work normally.
Flowing or rushing water creates
strong forces. Driving through
flowing water could cause the
vehicle to be carried away. If this
happens, you and other vehicle
occupants could drown. Do not
ignore police warnings and be very
cautious about trying to drive
through flowing water.
Hydroplaning
Hydroplaning is dangerous. Water can
build up under the vehicle's tires so
they actually ride on the water. This
can happen if the road is wet enough
and you are going fast enough. When
the vehicle is hydroplaning, it has
little or no contact with the road.
There is no hard and fast rule about
hydroplaning. The best advice is to
slow down when the road is wet.
Other Rainy Weather Tips
Besides slowing down, other wet
weather driving tips include:
.Allow extra following distance.
. Pass with caution.
. Keep windshield wiping equipment
in good shape.
. Keep the windshield washer fluid
reservoir filled.
. Have good tires with proper tread
depth. See Tires0339.
. Turn off cruise control.
Hill and Mountain Roads
Driving on steep hills or through
mountains is different than driving on
flat or rolling terrain. Tips include:
.Keep the vehicle serviced and in
good shape.
. Check all fluid levels and brakes,
tires, cooling system, and
transmission.
. Shift to a lower gear when going
down steep or long hills.
{Warning
Using the brakes to slow the vehicle
on a long downhill slope can cause
brake overheating, can reduce brake
performance, and could result in a
loss of braking. Shift the
transmission to a lower gear to let
the engine assist the brakes on a
steep downhill slope.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
DRIVING AND OPERATING 195
{Warning
Coasting downhill in N (Neutral) or
with the ignition off is dangerous.
This can cause overheating of the
brakes and loss of steering assist.
Always have the engine running
and the vehicle in gear.
. Drive at speeds that keep the
vehicle in its own lane. Do not
swing wide or cross the
center line.
. Be alert on top of hills; something
could be in your lane (e.g., stalled
car, crash).
. Pay attention to special road signs
(e.g., falling rocks area, winding
roads, long grades, passing or
no-passing zones) and take
appropriate action.
Winter Driving
Driving on Snow or Ice
Snow or ice between the tires and the
road creates less traction or grip, so
drive carefully. Wet ice can occur at
about 0 °C (32 °F) when freezing rain
begins to fall. Avoid driving on wet ice
or in freezing rain until roads can be
treated.
For slippery road driving:
.Accelerate gently. Accelerating too
quickly causes the wheels to spin
and makes the surface under the
tires slick.
. Turn on Traction Control. See
Traction Control/Electronic Stability
Control 0220.
. Antilock Brake System (ABS)
improves vehicle stability during
hard stops, but the brakes should
be applied sooner than when on
dry pavement. See Antilock Brake
System (ABS) 0217.
See Driver Mode Control 0222. .
Allow greater following distance
and watch for slippery spots. Icy
patches can occur on otherwise
clear roads in shaded areas. The
surface of a curve or an overpass
can remain icy when the
surrounding roads are clear. Avoid
sudden steering maneuvers and
braking while on ice.
. Turn off cruise control.
Blizzard Conditions
Stop the vehicle in a safe place and
signal for help. Stay with the vehicle
unless there is help nearby. If possible,
use Roadside Service. See Roadside
Service 0405. To get help and keep
everyone in the vehicle safe:
. Turn on the hazard warning
flashers.
. Tie a red cloth to an outside
mirror.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
196 DRIVING AND OPERATING
{Warning
Snow can trap engine exhaust
under the vehicle. This may cause
exhaust gases to get inside. Engine
exhaust contains carbon monoxide
(CO), which cannot be seen or
smelled. It can cause
unconsciousness and even death.
If the vehicle is stuck in snow:. Clear snow from the base of
the vehicle, especially any
blocking the exhaust pipe.
. Open a window about 5 cm
(2 in) on the vehicle side that
is away from the wind, to
bring in fresh air.
. Fully open the air outlets on
or under the instrument
panel.
. Adjust the climate control
system to circulate the air
inside the vehicle and set the
(Continued)
Warning (Continued)
fan speed to the highest
setting. See“Climate Control
Systems.”
For more information about CO, see
Engine Exhaust 0209.
To save fuel, run the engine for short
periods to warm the vehicle and then
shut the engine off and partially close
the window. Moving about to keep
warm also helps.
If it takes time for help to arrive,
when running the engine, push the
accelerator pedal slightly so the
engine runs faster than the idle speed.
This keeps the battery charged to
restart the vehicle and to signal for
help with the headlamps. Do this as
little as possible, to save fuel.
If the Vehicle Is Stuck
Slowly and cautiously spin the wheels
to free the vehicle when stuck in sand,
mud, ice, or snow. If stuck too severely for the traction
system to free the vehicle, turn the
traction system off and use the
rocking method. See
Traction Control/
Electronic Stability Control 0220.
{Warning
If the vehicle's tires spin at high
speed, they can explode, and you or
others could be injured. The vehicle
can overheat, causing an engine
compartment fire or other damage.
Spin the wheels as little as possible
and avoid going above 56 km/h
(35 mph).
Rocking the Vehicle to Get it Out
Turn the steering wheel left and right
to clear the area around the front
wheels. Turn off any traction system.
Shift back and forth between
R (Reverse) and a low forward gear,
spinning the wheels as little as
possible. To prevent transmission
wear, wait until the wheels stop
spinning before shifting gears. Release
the accelerator pedal while shifting,
and press lightly on the accelerator

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
200 DRIVING AND OPERATING
weight of the driver, passengers,
and cargo should never exceed the
vehicle's capacity weight.
Certification Label
Label Example
A vehicle-specific Certification
label is attached to the vehicle's
center pillar (B-pillar). The label
may show the gross weight
capacity of the vehicle, called the
Gross Vehicle Weight Rating
(GVWR). The GVWR includes the
weight of the vehicle, all
occupants, fuel, and cargo.
{Warning
Things inside the vehicle can
strike and injure people in a
sudden stop or turn, or in a
crash.
.Put things in the cargo
area of the vehicle. In the
cargo area, put them as far
forward as possible. Try to
spread the weight evenly.
.Never stack heavier things,
like suitcases, inside the
vehicle so that some of
them are above the tops of
the seats.
.Do not leave an unsecured
child restraint in the
vehicle.
.Secure loose items in the
vehicle.
.Do not leave a seat folded
down unless needed.
Starting and Operating
New Vehicle Break-In
Follow these recommended guidelines
during the first 2 400 km (1,500 mi) of
driving this vehicle. Parts have a
break-in period and performance will
be better in the long run.
For the first 2 400 km (1,500 mi):
. Avoid full throttle starts and
abrupt stops.
. Do not exceed 4000 engine rpm.
. Avoid driving at any one constant
speed, fast or slow.
. Avoid downshifting to brake or
slow the vehicle when the engine
speed will exceed 4000 rpm.
. Do not let the engine labor. Never
lug the engine in high gear at low
speeds.