2021 CADILLAC XT4 ECO mode

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
DRIVING AND OPERATING 225
2. Apply the brake pedal.
3. Press and hold the shift lockrelease 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 may be displayed.
Check that the ignition is on, the
engine is running, the brake pedal is
applied, and the shift lock release
button is pressed when you are
attempting to shift out of P (Park).
If all of these are met but the vehicle
will not shift out of P (Park), see your
dealer for service.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 mode, depending
on the driving conditions.
When less power is required, such as
cruising at a constant vehicle speed,
the system will operate in reduced
cylinder operation mode, allowing the
vehicle to achieve better fuel economy.
When greater power demands are
required, such as accelerating from a
stop, 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.
See
Shifting Into Park 0224 and
Engine Exhaust 0226.
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.

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DRIVING AND OPERATING 231
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).
Temporary Tap Manual Shift Mode
To enter Temporary Tap Shift Mode:
1. With the transmission in D (Drive) and not in Permanent Tap Shift
Mode, the Tap Shift controls will
activate a temporary tap manual
shift mode, allowing the
transmission to be manually
shifted.
2. To deactivate, hold the right control briefly. Automatic shifts
return after no manual shifts have
been done for seven to 10 seconds.
While using Tap Shift, the vehicle will
have firmer, quicker shifting. This can
be used for sport driving or when
climbing or descending hills, to stay in
gear longer, or to downshift for more
power or engine braking.
The transmission will only allow
shifting into gears appropriate for the
vehicle speed and engine revolutions
per minute (rpm). If shifting is
prevented for any reason, the M or D
will flash in the instrument cluster.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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DRIVING AND OPERATING 235
R (Reverse). The vehicle must come to
a complete stop on a grade for HSA to
activate.
Ride Control Systems
Traction Control/Electronic
Stability Control
System Operation
The vehicle has a Traction Control
System (TCS) and StabiliTrak/
Electronic Stability Control (ESC).
These systems help limit wheel spin
and assist the driver in maintaining
control, especially on slippery road
conditions.
TCS activates if it senses that any of
the drive wheels are spinning or
beginning to lose traction. On an
All-Wheel Drive (AWD) vehicle in
AWD or Sport Mode, the system will
operate if it senses that any of the
wheels are spinning or beginning to
lose traction. When this happens, TCS
applies the brakes to the spinning
wheels and reduces engine power to
limit wheel spin.StabiliTrak/ESC activates when the
system senses a discrepancy between
the intended path and the direction
the vehicle is actually traveling.
StabiliTrak/ESC selectively applies
braking pressure at any one of the
vehicle's brakes to help steer the
vehicle in the direction which you are
steering.
If cruise control is being used and
traction control or StabiliTrak/ESC
begins to limit wheel spin, cruise
control will disengage. Cruise control
may be turned back on when road
conditions allow. TCS and StabiliTrak/
ESC will automatically turn on when
cruise control is set.
Both systems come on automatically
when the vehicle is started and begins
to move. The systems may be heard or
felt while they are operating or while
performing diagnostic checks. This is
normal and does not mean there is a
problem with the vehicle.
It is recommended to leave both
systems on for normal driving
conditions, but it may be necessary to
turn TCS off if the vehicle gets stuckin sand, mud, ice, or snow. See
If the
Vehicle Is Stuck 0214 and “Turning
the Systems Off and On ”later in this
section.The indicator light for both systems is
in the instrument cluster. This
light will:
.Flash when TCS is limiting
wheel spin.
.Flash when StabiliTrak/ESC is
activated.
.Turn on and stay on when either
system is not working.
If either system fails to turn on or to
activate, a message may display in the
Driver Information Center (DIC), and
dcomes on and stays on to indicate
that the system is inactive and is not
assisting the driver in maintaining
control. The vehicle is safe to drive,
but driving should be adjusted
accordingly.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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236 DRIVING AND OPERATING
Ifdcomes on and stays on:
1. Stop the vehicle.
2. Turn the engine off and wait 15 seconds.
3. Start the engine.
Drive the vehicle. If
dcomes on and
stays on, the vehicle may need more
time to diagnose the problem. If the
condition persists, see your dealer.
Turning the Systems Off and On
Caution
Do not repeatedly brake or
accelerate heavily when TCS is off.
The vehicle driveline could be
damaged.
To turn off only TCS, press and
release
g. The Traction Off lighti
displays in the instrument cluster and
a DIC message may display.
To turn TCS on again, press and
release
g. The Traction Off lighti
displayed in the instrument cluster
will turn off and a DIC message may
display.
If TCS is limiting wheel spin when
g
is pressed, the system will not turn off
until the wheels stop spinning.
To turn off both TCS and StabiliTrak/
ESC, press and hold
guntil the
Traction Off light
iand StabiliTrak/
ESC Off light
gcome on and stay on
in the instrument cluster. A DIC
message may display. To turn TCS and StabiliTrak/ESC on
again, press and release
g. The
Traction Off light
iand StabiliTrak/
ESC Off light
gin the instrument
cluster turn off and a DIC message
may display.
Adding accessories can affect vehicle
performance. See Accessories and
Modifications 0283.
Driver Mode Control
Driver Mode Control (DMC) allows the
driver to adjust the overall driving
experience to better suit driver
preference by adjusting vehicle
systems. Drive mode availability and
affected vehicle systems are
dependent on vehicle trim level,
region, and optional features.
If the vehicle is in Tour or AWD
Mode, it will stay in that mode
through future ignition cycles. If the
vehicle is in any other mode, it will
return to Tour Mode when the vehicle
is restarted. When a mode is selected,
an indicator will come on in the
instrument cluster and stay on.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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DRIVING AND OPERATING 237
Driver Mode Control Switch
To activate each mode, press the
MODE button on the center console.
Tour Mode : Use for normal city and
highway driving to provide a smooth
ride. This setting provides balance
between comfort and handling. This is
the standard/default mode. There is
no persistent indicator in the
instrument cluster for this mode.
AWD Mode : AWD Mode provides
torque to all four wheels. Select AWD
to improve traction and control on
slippery road surfaces, such as gravel, sand, wet pavement, snow, and ice.
For more information on AWD Mode,
see
All-Wheel Drive 0232.
Sport Mode : Use where road
conditions or personal preference
demand a more controlled response.
Sport Mode improves vehicle handling
and acceleration on dry pavement.
When active, Sport Mode modifies
steering efforts, transmission shifting,
and AWD torque, if equipped.
The Performance Algorithm Liftfoot
(PAL) feature is enabled in Sport
Mode. PAL allows the transmission to
hold the current gear after a quick
release of a heavily applied accelerator
pedal. This provides greater engine
braking and enhanced vehicle control.
When PAL is activated, there may be
an additional gear symbol that
appears in the instrument cluster
display. See Performance Shifting Light
0 109.
Off-Road Mode : Use this mode for
off-road recreational driving. When
active, Off–Road Mode should be used
to improve driving at moderate
speeds, on grass, gravel, dirt, unpaved
roads, or snow-covered roads. The accelerator pedal is tuned for off-road
use. This mode modifies pedal
mapping, AWD, ESC, and TCS
Performance.
Snow/Ice Mode :
Snow/Ice Mode
improves vehicle acceleration on snow
and ice covered roads. When active,
Snow/Ice Mode will adjust
acceleration to optimize traction on
slippery surfaces. This can
compromise the acceleration on dry
asphalt. This feature is not intended
for use when the vehicle is stuck in
sand, mud, ice, snow, or gravel. If the
vehicle becomes stuck, see If the
Vehicle Is Stuck 0214.
Cruise Control
{
Warning
Cruise control can be dangerous
where you cannot drive safely at a
steady speed. Do not use cruise
control on winding roads or in
heavy traffic. (Continued)

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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DRIVING AND OPERATING 271
and may not be covered by the vehicle
warranty. SeeRecommended Fuel
0 267.
Driving Characteristics and
Towing Tips
{Warning
You can lose control when towing a
trailer if the correct equipment is
not used or the vehicle is not driven
properly. For example, if the trailer
is too heavy or the trailer brakes are
inadequate for the load, the vehicle
may not stop as expected. You and
others could be seriously injured.
The vehicle may also be damaged,
and the repairs would not be
covered by the vehicle warranty.
Pull a trailer only if all the steps in
this section have been followed. Ask
your dealer for advice and
information about towing a trailer
with the vehicle.
Driving with a Trailer
Trailering is different than just driving
the vehicle by itself. Trailering means
changes in handling, acceleration,
braking, durability, and fuel economy.
Successful, safe trailering takes correct
equipment, and it has to be used
properly.
The following information has many
time-tested, important trailering tips
and safety rules. Many of these are
important for your safety and that of
your passengers. Read this section
carefully before pulling a trailer.
When towing a trailer:
.Become familiar with and follow all
state and local laws that apply to
trailer towing. These requirements
vary from state to state.
.State laws may require the use of
extended side view mirrors. Even if
not required, you should install
extended side view mirrors if your
visibility is limited or restricted
while towing.
.Do not tow a trailer during the first
800 km (500 mi) of vehicle use to
prevent damage to the engine, axle,
or other parts.
.It is recommended to perform the
first oil change before heavy towing.
.During the first 800 km (500 mi) of
trailer towing, do not drive over
80 km/h (50 mph) and do not make
starts at full throttle.
.Vehicles can tow in D (Drive). If the
transmission downshifts too often, a
lower gear may be selected using
Manual Mode See Manual Mode
0 231.
If equipped, the following driver
assistance features should be turned
off when towing a trailer:
.Adaptive Cruise Control (ACC)
.Super Cruise Control
.Lane Keep Assist (LKA)
.Park Assist
.Automatic Parking Assist (APA)
.Reverse Automatic Braking (RAB)
If equipped, the following driver
assistance features should be turned
to alert or off when towing a trailer:

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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294 VEHICLE CARE
Automatic Coolant Service Fill
Instructions
This feature assists in filling and
removing air from the cooling system
after service of components or when
coolant is added after being too low.
To activate the fill and air removal
process:1. With a cold system, add coolant to the indicated mark on the
surge tank.
2. Replace the cap on the surge tank.
3. Connect the vehicle to a battery charger.
4. Turn the ignition to Service Mode. See Ignition Positions 0219.
5. Turn off the air conditioning.
6. Set the parking brake.
7. At the same time, press the accelerator and the brake for
automatic transmission vehicles for
two seconds, then release.
At the end of the cycle, check the
coolant level in the surge tank and
add coolant if it is low. Turn off the vehicle, allow the Electronic Control
Module (ECM) to go to sleep, about
2 minutes, and repeat Steps 3-7.
Listen for pump activation and
movement of the control valves while
watching the level of the coolant in
the surge tank. If the tank empties,
turn the ignition off, carefully remove
the surge tank cap, refill to the
indicated mark, and repeat Steps 3-6.
The fill and air removal process will
run for approximately 10 minutes.
Engine Overheating
The vehicle has several indicators to
warn of the engine overheating.
There is an engine coolant
temperature gauge on the instrument
cluster. See
Engine Coolant Temperature
Gauge 0103. The vehicle may also
display a message on the Driver
Information Center (DIC).
If the decision is made not to lift the
hood when this warning appears, get
service help right away. See Roadside
Service 0378. If the decision is made to lift the
hood, make sure the vehicle is parked
on a level surface. Then check to see if
the engine cooling fan is running.
If the engine is overheating, the fan
should be running. If it is not, do not
continue to run the engine. Have the
vehicle serviced.
Caution
Do not run the engine if there is a
leak in the engine cooling system.
This can cause a loss of all coolant
and can damage the system and
vehicle. Have any leaks fixed
right away.
If Steam Is Coming from the
Engine Compartment
{Warning
Steam and scalding liquids from a
hot cooling system are under
pressure. Turning the pressure cap,
even a little, can cause them to
come out at high speed and you
could be burned. Never turn the cap
when the cooling system, including
(Continued)

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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322 VEHICLE CARE
in the following order: driver side
front tire, passenger side front tire,
passenger side rear tire, and driver
side rear. See your dealer for service or
to purchase a relearn tool. A TPMS
relearn tool can also be purchased.
See Tire Pressure Monitor Sensor
Activation Tool at
www.gmtoolsandequipment.com or
call 1-800-GM TOOLS
(1-800-468-6657).
There are two minutes to match the
first tire/wheel position, and
five minutes overall to match all four
tire/wheel positions. If it takes longer,
the matching process stops and must
be restarted.
The TPMS sensor matching process is:1. Set the parking brake.
2. Place the vehicle in Service Mode. See Ignition Positions 0219.
3. Make sure the Tire Pressure info display option is turned on. The
info displays on the DIC can be
turned on and off through the
Options menu. See Driver
Information Center (DIC) 0114. 4. Use the five-way DIC control on the
right side of the steering wheel to
scroll to the Tire Pressure screen
under the DIC info page. See Driver
Information Center (DIC) 0114.
5. Press and hold SEL in the center of the five-way DIC control.
The horn sounds twice to signal
the receiver is in relearn mode and
the TIRE LEARNING ACTIVE
message displays on the DIC
screen.
6. Start with the driver side front tire.
7. Place the relearn tool against the tire sidewall, near the valve stem.
Then press the button to activate
the TPMS sensor. A horn chirp
confirms that the sensor
identification code has been
matched to this tire and wheel
position.
8. Proceed to the passenger side front tire, and repeat Step 7.
9. Proceed to the passenger side rear tire, and repeat Step 7.
10. Proceed to the driver side rear tire, and repeat Step 7. The horn sounds
two times to indicate the sensor identification code has been
matched to the driver side rear tire,
and the TPMS sensor matching
process is no longer active. The
TIRE LEARNING ACTIVE message
on the DIC display screen goes off.
11. Turn the vehicle off.
12. Set all four tires to the recommended air pressure level as
indicated on the Tire and Loading
Information label.
Tire Inspection
We recommend that the tires,
including the spare tire, if the
vehicle has one, be inspected for
signs of wear or damage at least
once a month.
Replace the tire if:
.The indicators at three or more
places around the tire can
be seen.
.There is cord or fabric showing
through the tire's rubber.
.The tread or sidewall is cracked,
cut, or snagged deep enough to
show cord or fabric.