engine CADILLAC XT6 2020 Workshop Manual

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
186 DRIVING AND OPERATING
Retained Accessory
Power (RAP)
Some vehicle accessories may be used
after the ignition is turned off.
The power windows and sunroof,
if equipped, will continue to work for
up to 10 minutes or until any door is
opened.
The infotainment system will continue
to work for 10 minutes, until the
driver door is opened, or until the
ignition is turned on or placed in
ACC/ACCESSORY.
Shifting Into Park
To shift into P (Park):1. Hold the brake pedal down and set the parking brake. See Electric
Parking Brake 0198.
2. Press the button on top of the shift lever to shift into P (Park).
See Automatic Transmission
0 190.
3. The P indicator on the shift lever will turn red when the vehicle is
in P (Park).
Leaving the Vehicle with the
Engine Running
{Warning
It can be dangerous to leave the
vehicle with the engine running.
It could overheat and catch fire.
It is dangerous to get out of the
vehicle if the vehicle is not in
P (Park) with the parking brake set.
The vehicle can roll.
Do not leave the vehicle when the
engine is running. If you have left
the engine running, the vehicle can
move suddenly. You or others could
be injured. To be sure the vehicle
will not move, even when you are
on fairly level ground, always set
the parking brake and shift to
P (Park). See Shifting Into Park 0186
. If you are towing a trailer, see
Driving Characteristics and Towing
Tips 0244. If you have to leave the vehicle with
the engine running, be sure the
vehicle is in P (Park) and the parking
brake is set before you leave it.
If you are towing a trailer and parking
on a hill, see
Driving Characteristics
and Towing Tips 0244.
Shifting out of Park
This vehicle is equipped with an
electronic transmission. The shift lock
release button is designed to prevent
inadvertent shifting out of P (Park)
unless the ignition is on, the brake
pedal is applied, and the shift lock
release button is pressed.
The shift lock control is always
functional except in the case of an
uncharged or low voltage (less than
9-volt) battery.
If the vehicle has an uncharged
battery or a battery with low voltage,
try charging or jump starting the
battery. See Jump Starting - North
America 0318.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
DRIVING AND OPERATING 187
To shift out of P (Park):1. Ensure the engine is running.
2. Apply the brake pedal.
3. Press the shift lock release button.
4. Move the shift lever to the desired position.
5. The P indicator will turn white and the gear indicator on the
shift lever will turn red when the
vehicle is no longer in P (Park).
6. After releasing the shift lever, it will return to the center position.
If the vehicle cannot shift from
P (Park), a Driver Information
Center (DIC) message will be
displayed. See your dealer for service.
Manual Park Release
{Warning
The transmission will be placed in
N (Neutral) when the manual park
release is pulled. The vehicle can (Continued)
Warning (Continued)
roll and you or others could be
injured. Ensure the vehicle is on
level ground.
Caution
The manual park release is not
intended to be used for towing.
Damage may result from using the
manual park release in this way.
The repairs would not be covered
by the vehicle warranty.
This vehicle includes a manual park
release that can be used to shift the
vehicle into N (Neutral) when the
engine is not running.
Pulling the manual park release while
the vehicle is on or turning the
ignition on while the manual park
release is pulled, will cause a DIC
message to display. To place the vehicle in N (Neutral)
using the manual park release:
1. Ensure the vehicle is on level ground and set the parking
brake. Release the brake pedal.
2. Turn the vehicle off.
3. Use a flat-bladed tool to remove the interior trim panel.
4. Ensure more than one minute has passed since Step 2. Apply
the brake pedal.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
188 DRIVING AND OPERATING
5. Pull the manual park releaselever 90° to its latching position.
6. With the brake pedal released, place the ignition in ACC/
ACCESSORY. Then apply the
brake pedal and release the
parking brake.
7. Ensure there are no loose objects in the area that could bump the
manual park release lever.
To return the vehicle to P (Park) using
the manual park release: 1. Bring the vehicle to a complete stop.2. Rotate the manual park release
lever 90° back to its original
position.
3. Apply the parking brake.
4. Confirm that the vehicle is in P (Park) by turning the ignition
on or by placing the vehicle in
ACC/ACCESSORY, then ensure
that the indicator displays P.
5. Reinstall the interior trim panel.
Parking over Things
That Burn
{Warning
Things that can burn could touch
hot exhaust parts under the vehicle
and ignite. Do not park over papers,
leaves, dry grass, or other things
that can burn.
Active Fuel Management
This vehicle's engine may be equipped
with Active Fuel Management, which
allows the engine to operate on either
all of its cylinders, or in reduced
cylinder operation, depending on the
driving conditions.
When less power is required, such as
cruising at a constant vehicle speed,
the system will operate in reduced
operation mode, allowing the vehicle
to achieve better fuel economy. When
greater power demands are required,
such as accelerating from a stop,

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
DRIVING AND OPERATING 189
passing, or merging onto a freeway,
the system will maintain full-cylinder
operation.
If the vehicle has an Active Fuel
Management indicator, see Driver
Information Center (DIC) for more
information on using this display.
Extended Parking
It is best not to park with the vehicle
running. If the vehicle is left running,
be sure it will not move and there is
adequate ventilation.
SeeShifting Into Park 0186 and
Engine Exhaust 0189.
If the vehicle is left parked and
running with the RKE transmitter
outside the vehicle, it will continue to
run for up to half an hour. If the vehicle is left parked and
running with the RKE transmitter
inside the vehicle, it will continue to
run for up to an hour.
The vehicle could turn off sooner if it
is parked on a hill, due to lack of
available fuel.
The timer will reset if the vehicle is
taken out of P (Park) while it is
running.
Engine Exhaust
{Warning
Engine exhaust contains carbon
monoxide (CO), which cannot be
seen or smelled. Exposure to CO
can cause unconsciousness and
even death.
Exhaust may enter the vehicle if:
. The vehicle idles in areas with
poor ventilation (parking
garages, tunnels, deep snow
that may block underbody
airflow or tail pipes).
. The exhaust smells or sounds
strange or different.
. The exhaust system leaks due
to corrosion or damage.
. The vehicle exhaust system
has been modified, damaged,
or improperly repaired.
(Continued)

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
190 DRIVING AND OPERATING
Warning (Continued)
.There are holes or openings
in the vehicle body from
damage or aftermarket
modifications that are not
completely sealed.
If unusual fumes are detected or if
it is suspected that exhaust is
coming into the vehicle: . Drive it only with the
windows completely down.
. Have the vehicle repaired
immediately.
Never park the vehicle with the
engine running in an enclosed area
such as a garage or a building that
has no fresh air ventilation.
Running the Vehicle While
Parked
It is better not to park with the engine
running.
If the vehicle is left with the engine
running, follow the proper steps to be
sure the vehicle will not move. See
Shifting Into Park 0186 and
Engine Exhaust 0189.
If parking on a hill and pulling a
trailer, see Driving Characteristics and
Towing Tips 0244.
Automatic Transmission
The shift pattern is displayed in the
top of the shift lever. The selected
gear position will illuminate red on
the shift lever, while all others will be
displayed in white. If the shift is not
immediate, as in very cold conditions,
the indicator on the shift lever may
flash until it is fully engaged.
The shift lever always starts from a
center position, represented by an up/
down arrow on the shift pattern. After
releasing the shift lever, it will return
to the center position.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
DRIVING AND OPERATING 191
The transmission does not operate
when the vehicle is off.
If the vehicle is in ACC/ACCESSORY,
the transmission can be shifted into
P (Park).
If the vehicle is turned off while at a
relatively high vehicle speed, the
transmission will automatically shift
to N (Neutral). Once the vehicle is
stopped, P (Park) is automatically
selected.
P :This position locks the drive
wheels. Use P (Park) when starting the
engine because the vehicle cannot
move easily.
{Warning
It is dangerous to get out of the
vehicle if the transmission is not in
P (Park) with the parking brake set.
The vehicle can roll.
Do not leave the vehicle when the
engine is running. If the engine has
been left running, the vehicle can
move suddenly. You or others could
be injured. To be sure the vehicle
will not move, even when on fairly
level ground, always set the parking
brake and place the transmission
into P (Park). See Shifting Into Park
0 186 and
Electric Parking Brake 0198.
This vehicle is equipped with an
electronically controlled transmission.
The shift lock release button is
designed to prevent inadvertent
shifting out of P (Park) unless the
ignition is on, the brake pedal is
applied, and the shift lock release
button is pressed.
When the vehicle is stopped, press
ENGINE START/STOP to turn off the
vehicle. The transmission will shift to
P (Park) automatically unless the
vehicle is in N (Neutral), See “Car
Wash Mode ”later in this section.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
192 DRIVING AND OPERATING
The vehicle will not shift into P (Park)
if it is moving too fast. Stop the
vehicle and shift into P (Park).
To shift into and out of P (Park), see
Shifting Into Park0186 and
Shifting out of Park 0186.
Service Shift Lever Message
If the message SERVICE SHIFTER SEE
OWNER’S MANUAL appears in the
Driver Information Center (DIC), the
shift lever needs service. Have the
vehicle serviced as soon as possible.
If the vehicle is automatically shifting
into P (Park), check to see if the
P (Park) button on top of the shift
lever is stuck. To operate the vehicle,
hold the shift lever in the desired gear,
R (Reverse) or D (Drive), until vehicle
speed exceeds 15 km/h (10 mph), then
release the shift lever.
R : Use this gear to back up.
If the vehicle is shifted from either
R (Reverse) to D (Drive) or M (Manual
Mode), or M (Manual Mode) or
D (Drive) to R (Reverse) while the
speed is too high, the vehicle will shift
to N (Neutral). Reduce the vehicle
speed and try the shift again. To shift into R (Reverse):
1. Bring the vehicle to a complete stop.
2. Press and hold the shift lock release button on the side of the
shift lever.
3. From the center position, move the shift lever forward through
the first detent to the end of
travel. R is illuminated in red.
4. After releasing the shift lever, it will return to the center position.
To shift out of R (Reverse):
1. Bring the vehicle to a complete stop.
2. Shift to the desired gear.
3. After releasing the shift lever, it will return to the center position.
At low vehicle speeds, R (Reverse) can
be used to rock the vehicle back and
forth to get out of snow, ice, or sand
without damaging the transmission.
See If the Vehicle Is Stuck 0176. N :
In this position, the engine does
not connect with the wheels. To
restart the engine when the vehicle is
already moving, use N (Neutral) only.
{Warning
Shifting into a drive gear while the
engine is running at high speed is
dangerous. Unless your foot is
firmly on the brake pedal, the
vehicle could move very rapidly.
You could lose control and hit
people or objects. Do not shift into
a drive gear while the engine is
running at high speed.
Caution
Shifting out of P (Park) or
N (Neutral) with the engine running
at high speed may damage the
transmission. The repairs would not
be covered by the vehicle warranty.
Be sure the engine is not running at
high speed when shifting the
vehicle.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
DRIVING AND OPERATING 193
The vehicle is not designed to stay in
N (Neutral) for more than
five minutes. It may automatically
shift into P (Park). N (Neutral) is not
intended for towing. If the vehicle
needs to be towed, seeTowing the
Vehicle 0320.
To shift into N (Neutral): 1. Move the shift lever forward to the first detent from the center
position.
.If the vehicle is in P (Park),
apply the brake pedal and
press the shift lock release
button while moving the shift
lever forward.
. N will illuminate in red.
2. After releasing the shift lever, it will return to the center position.
To shift out of N (Neutral):
1. Bring the vehicle to a complete stop.
2. Shift to the desired gear. If shifting from N (Neutral) to
R (Reverse), press the shift lock
release button. 3. After releasing the shift lever, it
will return to the center position.
Car Wash Mode
This vehicle includes a Car Wash
Mode that allows the vehicle to
remain in N (Neutral) for use in
automatic car washes.
Car Wash Mode (Engine Off –Driver
in Vehicle)
To place the vehicle in N (Neutral)
with the engine off and the vehicle
occupied:
1. Drive to the entrance of the car wash.
2. Apply the brake pedal.
3. Shift to N (Neutral).
4. Turn off the engine and release the brake pedal.
5. The indicator should continue to show N. If it does not, repeat
Steps 2–4.
6. The vehicle is now ready for the car wash. Car Wash Mode (Engine Off
–Driver
out of Vehicle)
To place the vehicle in N (Neutral)
with the engine off and the vehicle
unoccupied:
1. Drive to the entrance of the car wash.
2. Apply the brake pedal.
3. Open the door.
4. Shift to N (Neutral).
5. Turn off the engine and release the brake pedal.
6. The indicator should continue to show N. If it does not, repeat
Steps 2–5.
7. Exit the vehicle and close the door. The vehicle is now ready
for the car wash.
8. The vehicle may automatically shift to P (Park) when the door is
opened.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
194 DRIVING AND OPERATING
Car Wash Mode (Engine On–Driver
in Vehicle)
To place the vehicle in N (Neutral)
with the engine on and the vehicle
occupied:
1. Drive to the entrance of the car wash.
2. Apply the brake pedal.
3. Shift to N (Neutral).
4. Release the brake pedal. The vehicle is now ready for the
car wash.
Car Wash Mode (Engine On –Driver
out of Vehicle)
To place the vehicle in N (Neutral)
with the engine on and the vehicle
unoccupied:
1. Drive to the entrance of the car wash.
2. Apply the brake pedal.
3. Open the door.
4. Shift to N (Neutral), then release the brake pedal. 5. The indicator should continue to
show N. If it does not, repeat
Steps 2–4.
6. Exit the vehicle and close the door. The vehicle is now ready
for the car wash.
7. The vehicle may automatically shift to P (Park) when the door is
opened.
Caution
A transmission hot message may
display if the automatic
transmission fluid is too hot.
Driving under this condition can
damage the vehicle. Stop and idle
the engine to cool the automatic
transmission fluid. This message
clears when the transmission fluid
has cooled sufficiently.
D : This position is for normal driving.
If more power is needed for passing,
press the accelerator pedal down. To shift into D (Drive):
1. Bring the vehicle to a complete stop.
2. From the center position, move the shift lever back.
.If the vehicle is in P (Park),
press the shift lock release
button while pulling the shift
lever back.
. D will illuminate in red.
. After releasing the shift lever,
it will return to the center
position.
To shift out of D (Drive): 1. Bring the vehicle to a complete stop.
2. Shift to the desired gear.
3. After releasing the shift lever, it will return to the center position.
Downshifting the transmission in
slippery road conditions could result
in skidding. See “Skidding”underLoss
of Control 0168.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
DRIVING AND OPERATING 195
Caution
Spinning the tires or holding the
vehicle in one place on a hill using
only the accelerator pedal may
damage the transmission. The
repair will not be covered by the
vehicle warranty. If the vehicle is
stuck, do not spin the tires. When
stopping on a hill, use the brakes to
hold the vehicle in place.
Manual Mode
Tap ShiftCaution
Driving with the engine at a high
rpm without upshifting while using
Tap Shift, could damage the vehicle.
Always upshift when necessary
while using Tap Shift.
If equipped, vehicles with Tap Shift
have controls on the back of the
steering wheel to manually shift the
automatic transmission.
Permanent Tap Shift Mode
To enter Permanent Tap Shift Mode: 1. With the vehicle in D (Drive), pull back on the shift lever to
activate M (Manual Mode). The
M in the shift pattern will
illuminate in red, and the D will
switch to white.
2. After releasing the shift lever, it will return to the center position. 3. Pull the control toward you to
shift. Pull the left control to
downshift, and the right control
to upshift. To shift to the lowest
available gear, pull and hold the
left control.
To exit Permanent Tap Shift Mode: 1. To exit M (Manual Mode) and return to D (Drive), pull back on
the shift lever. The D in the shift
pattern will illuminate in red,
and the M will switch to white.
2. After releasing the shift lever, it will return to the center position.
M (Manual Mode) can be exited to
return to D (Drive) at any speed by
pulling the lever rearward from the
center position. It is not necessary to
stop the vehicle or shift to N (Neutral)
or P (Park) prior to shifting back to
D (Drive).