2023 CADILLAC XT4 automatic transmission

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
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-
16412876) - 2023 - CRC - 3/25/22
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-
16412876) - 2023 - CRC - 3/25/22
Driving and Operating 273
The cruise control system may
automatically brake to slow
the vehicle down.
The speedometer reading can
be displayed in either English
or metric units. See
Instrument Cluster0119. The
increment value used depends
on the units displayed.
Passing Another Vehicle
While Using Cruise Control
Use the accelerator pedal to
increase the vehicle speed.
When you take your foot off
the pedal, the vehicle will slow
down to the previous set
cruise speed.
While pressing the accelerator
pedal or shortly following the
release to override cruise,
briefly moving the thumbwheel
down toward SET− will result
in cruise set to the current
vehicle speed.
Using Cruise Control on Hills
How well the cruise control will
work on hills depends upon
the vehicle speed, load, and the steepness of the hills.
When going up steep hills, you
might have to step on the
accelerator pedal to maintain
your speed. When going
downhill, the cruise control
system may automatically
brake to slow the vehicle
down. Also, you may have to
brake or shift to a lower gear
to keep your speed down.
If the brake pedal is applied,
cruise control disengages.
Ending Cruise Control
There are four ways to end
cruise control:
.Step lightly on the brake
pedal.
.Press*.
.Shift the transmission to
N (Neutral).
.PressJ.
Erasing Speed Memory
The cruise control set speed is
erased from memory if
Jis
pressed or if the ignition is
turned off.
Adaptive Cruise
Control (Advanced)
If equipped with Adaptive
Cruise Control (ACC), it allows
the driver to select the cruise
control set speed and
following gap. Read this entire
section before using this
system. The following gap is
the following time between
your vehicle and a vehicle
detected directly ahead in
your path, moving in the same
direction. If no vehicle is
detected in your path, ACC
works like regular cruise
control. ACC uses camera and
radar sensors. See Radio
Frequency Statement 0446.
If a vehicle is detected in your
path, ACC can apply
acceleration or limited,
moderate braking to maintain
the selected following gap. To
disengage ACC, apply the
brake. If ACC is controlling
your vehicle speed when the
Traction Control System (TCS)
or StabiliTrak/Electronic

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
Driving and Operating 317
The vehicle can tow in
D (Drive). Shift the
transmission to a lower gear if
the transmission shifts too
often under heavy loads and/
or hilly conditions.
When towing at higher
altitudes, engine coolant will
boil at a lower temperature
than at lower altitudes. If the
engine is turned off
immediately after towing at
high altitude on steep uphill
grades, the vehicle could show
signs similar to engine
overheating. To avoid this, let
the engine run, preferably on
level ground, with the
transmission in P (Park) for a
few minutes before turning
the engine off. If the overheat
warning comes on, see Engine
Overheating0342.Parking on Hills
{Warning
To prevent serious injury or
death, always park your
vehicle and trailer on a level
surface when possible.
When parking your vehicle and
your trailer on a hill: 1. Press the brake pedal, but do not shift into P (Park)
yet. Turn the wheels into
the curb if facing downhill
or into traffic if facing
uphill.
2. Have someone place chocks under the trailer
wheels.
3. When the wheel chocks are in place, gradually
release the brake pedal to
allow the chocks to absorb
the load of the trailer.
4. Reapply the brake pedal. Then apply the parking
brake and shift into
P (Park). 5. Release the brake pedal.
Leaving After Parking on
a Hill
1. Apply and hold the brake
pedal.
.Start the engine.
.Shift into the
desired gear.
.Release the parking
brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the
chocks.
Maintenance When Trailer
Towing
The vehicle needs service
more often when used to tow
trailers. See Maintenance
Schedule 0425. It is especially
important to check the
automatic transmission fluid,
engine oil, axle lubricant, belts,

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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326 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . 327
California PerchlorateMaterials
Requirements . . . . . . . . . . . . . 327
Accessories and Modifications . . . . . . . . . . . . . . 327
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . 328
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . 329
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 331
Engine Oil . . . . . . . . . . . . . . . . . . . . 332
Engine Oil Life System . . . 335
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . 336
Engine Air Filter Life System . . . . . . . . . . . . . . . . . . . . . . 336
Engine Air Cleaner/ Filter . . . . . . . . . . . . . . . . . . . . . . . . . 337
Cooling System . . . . . . . . . . . . 338
Engine Overheating . . . . . . 342
Washer Fluid . . . . . . . . . . . . . . . . 343
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 344
Brake Fluid . . . . . . . . . . . . . . . . . . 345 Battery - North
America . . . . . . . . . . . . . . . . . . . . . 346
All-Wheel Drive . . . . . . . . . . . . . 347
Park Brake and P (Park) Mechanism Check . . . . . . . 347
Wiper Blade Replacement . . . . . . . . . . . . . . 347
Windshield Replacement . . . . . . . . . . . . . . 349
Gas Strut(s) . . . . . . . . . . . . . . . . . 349Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . . 350
Bulb Replacement
Bulb Replacement . . . . . . . . 350
LED Lighting . . . . . . . . . . . . . . . . 350
Front Turn SignalLamps . . . . . . . . . . . . . . . . . . . . . . . 350
Back-Up Lamps . . . . . . . . . . . . . 351
Electrical System
Electrical System Overload . . . . . . . . . . . . . . . . . . . . 352
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . . . 353
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . 354
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 360
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 364
All-Season Tires . . . . . . . . . . . 365
Winter Tires . . . . . . . . . . . . . . . . 366
Summer Tires . . . . . . . . . . . . . . 366
Tire Sidewall Labeling . . . . 367
Tire Designations . . . . . . . . . . 369
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . 370
Tire Pressure . . . . . . . . . . . . . . . 372
Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . 374
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 375
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . 376
Tire Inspection . . . . . . . . . . . . . 380
Tire Rotation . . . . . . . . . . . . . . . . 381
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . 382
Buying New Tires . . . . . . . . . 383
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 385
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 385
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 387
Wheel Replacement . . . . . . 387
Tire Chains . . . . . . . . . . . . . . . . . . 388

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
336 Vehicle Care
It cannot be reset
accurately until the next oil
change.
The system is reset when the
CHANGE ENGINE OIL SOON
message is off.
If the CHANGE ENGINE OIL
SOON message comes back
on when the vehicle is started,
the engine oil life system has
not been reset. Repeat the
procedure.
Automatic
Transmission Fluid
A transmission fluid leak is the
only reason for fluid loss. If a
leak occurs, take the vehicle to
your dealer and have it
repaired as soon as possible.
Caution
Use of the incorrect
automatic transmission fluid
may damage the vehicle, and
the damage may not be
covered by the vehicle (Continued)
Caution (Continued)
warranty. Always use the
correct automatic
transmission fluid. See
Recommended Fluids and
Lubricants0429.
See your dealer to have the
fluid and filter changed at the
intervals listed in the
Maintenance Schedule 0425.
Engine Air Filter Life
System
If equipped, this feature
provides the engine air filter's
remaining life and best timing
for a change. The timing to
change an engine air filter
depends on driving and
environmental conditions.
When to Change Engine
Air Filter
When the Driver Information
Center (DIC) displays a
message to replace the engine
air filter at the next oil change,
follow this timing.
When the DIC displays a
message to replace the engine
air filter soon, replace the
engine air filter at the earliest
convenience. The system must
be reset after the engine air
filter is changed.
If the DIC displays a message
to check the engine air filter
system, see your dealer.
How to Reset Engine Air
Filter Life System
To reset:
1. Place the vehicle in P (Park).
2. Display the Air Filter Life on the DIC. See Driver
Information Center (DIC)
0136.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 341
1. Turn the pressure capslowly counterclockwise.
If a hiss is heard, wait for
that to stop. A hiss means
there is still some
pressure left.
2. Keep turning the pressure cap slowly and remove it.
3. If topping off the level inthe coolant surge tank, add
the proper mixture until
the level reaches the mark
on the front of the tank
and replace the cap.
Operate the vehicle.
Repeat steps 1–3, as
necessary.
If filling the system (such
as after servicing), follow
the Automatic Coolant
Service Fill Instructions.
Caution
If the pressure cap is not
tightly installed, coolant loss
and engine damage may
occur. Be sure the cap is
properly and tightly secured.
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 0247.
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.