engine CADILLAC XT4 2023 Repair Manual

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
258 Driving and Operating
Warning (Continued)
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
Park0254 and
Electric Parking Brake 0264.
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”
following. The vehicle will not shift into
P (Park) if it is moving too fast.
Stop the vehicle and shift into
P (Park).
To shift in and out of P (Park),
see Shifting Into Park
0254
and Shifting out of Park 0254.
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.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Driving and Operating 259
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 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 0241.
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.
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, see
Transporting a Disabled
Vehicle 0407.
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

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
260 Driving and Operating
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) upon re-entry.
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.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Driving and Operating 261
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) upon re-entry.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” under Loss of
Control 0233.
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.
(Continued)

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
262 Driving and Operating
Caution (Continued)
When stopping on a hill, use
the brakes to hold the
vehicle in place.
Engine speeds may be
increased while driving at
highway speeds while the
engine is still warming up.
Manual Mode
Tap Shift Caution
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).

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Driving and Operating 263
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. The
transmission will not
automatically shift to the next
higher gear if the engine rpm
is too high. It will only
automatically shift to the next
lower gear if the engine rpm is
much too low.
Drive Systems
All-Wheel Drive
Vehicles with this feature can
operate in All-Wheel
Drive (AWD) Mode. When the
AWD feature is active, the
system transfers engine
power, if required, to all four
wheels. The system is fully
automatic and adjusts to road
conditions for improved
traction and control. In FWDMode engine power is
transferred to the front
wheels only, and the AWD
feature is off.
The AWD feature is
automatically activated when
certain modes are selected
using the Driver Mode Control
switch. When an AWD mode
change is requested the light
will flash briefly while the
system is engaging and the
AWD light will be displayed
when the system is active.
When a non-AWD Mode is
selected, the light will flash
briefly while the system
disengages and a 2WD light
will be displayed when the
AWD system is off. See Driver
Mode Control
0269.
When a compact spare tire is
installed on an AWD vehicle,
the system will automatically
detect the compact spare and
reduce AWD performance to
protect the system. To restore
AWD operation and prevent
excessive wear on the system,

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Driving and Operating 267
release under other
conditions. Do not rely on HSA
to hold the vehicle.
HSA is available when the
vehicle is facing uphill in a
forward gear, or when facing
downhill in 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 willdisengage. 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 stuck in
sand, mud, ice, or snow. See If
the Vehicle Is Stuck
0241 and
“Turning the Systems Off and
On” later in this section.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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268 Driving and Operating
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.
If
dcomes 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 light
idisplays in the
instrument cluster and a DIC
message may display.
To turn TCS on again, press
and release
g. The Traction
Off light
idisplayed in the
instrument cluster will turn off
and a DIC message may
display.
If TCS is limiting wheel spin
when
gis 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

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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270 Driving and Operating
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
0130.
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 0241.
Cruise Control
{
Warning
Cruise control can be
dangerous where you
cannot drive safely at a (Continued)
Warning (Continued)
steady speed. Do not use
cruise control on winding
roads or in heavy traffic.
Cruise control can be
dangerous on slippery roads.
On such roads, fast changes
in tire traction can cause
excessive wheel slip, and
you could lose control. Do
not use cruise control on
slippery roads.
With cruise control, a speed of
about 40 km/h (25 mph) or
more can be maintained
without keeping your foot on
the accelerator. Cruise control
does not work at speeds
below about 40 km/h (25 mph).

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Driving and Operating 309
Take Steering
The LKA system does not
continuously steer the vehicle.
If LKA does not detect active
driver steering, an alert and
chime may be provided. Steer
the vehicle to dismiss. LKA
may become temporarily
unavailable after repeated
take steering alerts.
When the System Does
Not Seem to Work
Properly
The system performance may
be affected by:
.Close vehicles ahead.
.Sudden lighting changes,
such as when driving
through tunnels.
.Banked roads.
.Roads with poor lane
markings, such as two-lane
roads.If the LKA system is not
functioning properly when lane
markings are clearly visible,
cleaning the windshield
may help.
A camera blocked message
may display if the camera is
blocked. Some driver
assistance systems may have
reduced performance or not
work at all. An LKA or LDW
unavailable message may
display if the systems are
temporarily unavailable. This
message could be due to a
blocked camera. The LKA
system does not need service.
Clean the outside of the
windshield behind the
rearview mirror.
LKA assistance and/or LDW
alerts may occur due to tar
marks, shadows, cracks in the
road, temporary or
construction lane markings,
or other road imperfections. This is normal system
operation; the vehicle does not
need service. Turn LKA off if
these conditions continue.
Fuel
Top Tier Fuel
GM recommends the use of
TOP TIER Detergent Gasoline
to keep the engine clean,
reduce engine deposits, and
maintain optimal vehicle
performance. Look for the
TOP TIER Logo or see
www.toptiergas.com for a list
of TOP TIER Detergent
Gasoline marketers and
applicable countries.