lock CADILLAC XT4 2023 Owners Manual

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
332 Vehicle Care
1. Engine Air Cleaner/Filter0337.
2. Engine Oil Fill Cap. See Engine Oil 0332.
3. Engine Oil Dipstick. See Engine Oil 0332.
4. Engine Cooling Fan (Out of View). See Cooling System
0338.
5. Brake Fluid Reservoir. See Brake Fluid 0345.
6. Battery - North America 0346.
7. Engine Coolant Surge Tank and Pressure Cap. See
Cooling System 0338.
8. Positive (+) Battery Terminal (Under Cover).
See Jump Starting - North
America 0404.
9. Windshield Washer Fluid Reservoir. See Washer
Fluid 0343.
10. Engine Compartment Fuse Block 0354. 11. Remote Negative (-)
Battery Terminal. See
Jump Starting - North
America 0404.
Engine Oil
To ensure proper engine
performance and long life,
careful attention must be paid
to engine oil. Following these
simple, but important steps
will help protect your
investment:
.Use engine oil approved to
the proper specification and
of the proper viscosity
grade. See “Selecting the
Right Engine Oil” in this
section.
.Check the engine oil level
regularly and maintain the
proper oil level. See
“Checking Engine Oil” and
“When to Add Engine Oil” in
this section.
.Change the engine oil at the
appropriate time. See Engine
Oil Life System 0335.
.Always dispose of engine oil
properly. See “What to Do
with Used Oil” in this section.
Checking Engine Oil
Check the engine oil level
regularly, every 650 km
(400 mi), especially prior to a
long trip. The engine oil
dipstick handle is a loop. See
Engine Compartment
Overview0331 for the
location.
{Warning
The engine oil dipstick
handle may be hot; it could
burn you. Use a towel or
glove to touch the dipstick
handle.
If a low oil Driver Information
Center (DIC) message displays,
check the oil level.
Follow these guidelines:
.To get an accurate reading,
park the vehicle on level
ground. Check the engine oil
level after the engine has

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.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 351
Base level
To replace one of these lamps:1. Turn steering wheel in opposite direction as the
bulb in need of replacing.
2. Remove fasteners retaining the front wheel
liner.
3. Pull back wheel liner to expose back of turn
signal lamp.
4. Remove turn signal bulbsocket from lamp housing
by rotating
counterclockwise. 5. Replace the bulb and
reverse Steps 1–4 to
reinstall.
Back-Up Lamps
To replace one of these bulbs:
1. Remove the fasteners toremove the trailer hitch
cover.
2. Access the lamp through the opening in the
underbody.
3. Disconnect the electrical connector from the bulb
assembly.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
352 Vehicle Care
4. Turn the bulb socketcounterclockwise and pull
the bulb straight out of the
socket.
5. Replace the bulb and reverse Steps 1–4 to
reinstall.
Electrical System
Electrical System
Overload
The vehicle has fuses and
circuit breakers to protect
against an electrical system
overload. When the current electrical
load is too heavy, the circuit
breaker opens and closes,
protecting the circuit until the
current load returns to normal
or the problem is fixed. This
greatly reduces the chance of
circuit overload and fire
caused by electrical problems.
Fuses and circuit breakers
protect power devices in the
vehicle.
If there is a problem on the
road and a fuse needs to be
replaced, the same amperage
fuse can be borrowed. Choose
some feature of the vehicle
that is not needed to use and
replace it as soon as possible.
To check a fuse, look at the
band inside the fuse. If the
band is broken or melted,
replace the fuse. Be sure to
replace a bad fuse with a fuse
of the identical size and rating.Replacing a Blown Fuse
1. Turn off the vehicle.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 353
2. Locate the fuse puller inthe engine compartment
fuse block.3. Use the fuse puller toremove the fuse from the
top or side, as shown
above.
4. If the fuse must be replaced immediately,
borrow a replacement fuse
with the same amperage
from the fuse block.
Choose a vehicle feature
that is not needed to
safely operate the vehicle.
Repeat Steps 2-3.
5. Insert the replacement fuse into the empty slot of
the blown fuse.
At the next opportunity, see
your dealer to replace the
blown fuse.
Headlamp Wiring
An electrical overload may
cause the lamps to go on and
off, or in some cases to remain
off. Have the headlamp wiring
checked right away if the
lamps go on and off or
remain off.
Windshield Wipers
If the wiper motor overheats
due to heavy snow or ice, the
windshield wipers will stop
until the motor cools and will
then restart.
Although the circuit is
protected from electrical
overload, overload due to
heavy snow or ice may cause
wiper linkage damage. Always
clear ice and heavy snow from
the windshield before using
the windshield wipers.
If the overload is caused by an
electrical problem and not
snow or ice, be sure to get it
fixed.
Fuses and Circuit
Breakers
The wiring circuits in the
vehicle are protected from
short circuits by a combination
of fuses and circuit breakers.
This greatly reduces the
chance of damage caused by
electrical problems.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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354 Vehicle Care
{Danger
Fuses and circuit breakers
are marked with
their ampere rating. Do not
exceed the
specified amperage rating
when replacing fuses and
circuit breakers. Use of an
oversized fuse or circuit
breaker can result in a
vehicle fire. You and others
could be seriously injured or
killed.
{Warning
Installation or use of fuses
that do not meet GM’s
original fuse specifications is
dangerous. The fuses could
fail, and result in a fire. You(Continued)
Warning (Continued)
or others could be injured or
killed, and the vehicle could
be damaged.
See Accessories and
Modifications 0327 and
General Information 0327.
To check or replace a blown
fuse, see Electrical System
Overload 0352.
Engine Compartment
Fuse Block
The underhood fuse block is in
the engine compartment, on
the driver side of the vehicle.
Caution
Do not pull the engine
compartment fuse block
lever, since it is intended
only for service purposes.
If pulled, vehicle malfunction
may occur.
Caution
Spilling liquid on any
electrical component on the
vehicle may damage it.
Always keep the covers on
any electrical component.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 355
To remove the fuse block
cover, press the clips on the
cover and lift it straight up.
The vehicle may not be
equipped with all of the fuses,
relays, and features shown.
Fuses Usage3 EBCM –
Electronic Brake
Control Module Fuses Usage
5 –
6 –

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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360 Vehicle Care
Relays Usage94 –
98 –
Instrument Panel
Fuse Block
The instrument panel fuse
block is on the driver side of
the instrument panel, between the steering wheel and the
door. To access the fuses,
remove the panel, starting at
the top. Once clips are
disengaged, the tabs along the
bottom of the door can be
disengaged from the
instrument panel to remove
the door.
To reinstall the door, place the
bottom tabs into the slots, and
rotate the door into position,
engaging the clips.
The vehicle may not be
equipped with all of the fuses,
relays, and features shown.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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362 Vehicle Care
Fuses UsageF10 BCM 2 SS –Body
Control Module 2
(Stop/Start) –Interior
Lamps Control Signal,
Door Handle Puddle
Lamp (LED), Left
Cornering Lamp,
Right Cornering
Lamp, Interior Lamps
Control Signal,
Backup Lamp Supply
Voltage, License
Plate Lamp Control
Signal, Rear Closure
Cargo Lamp Control
Signal, Center High
Mounted Stop Lamp
LED Lamp Control
Signal
F11 –
F12 –
F13 –
F14 –
F15 TCM SS –
Transmission Control
Module (Stop/Start) Fuses Usage
F16 AMP –Amplifier
F17 –
F18 VPM –Video
Processing Module
–
F19 PWR STR COL –
Power Steering
Column
–
F20 BCM 6 –Body
Control Module 6 –
LED Backlight
Control, Interior
Lighting Inadvertent
Load Control Signal,
Fuel Door Lock
Control Signal, LED
Backlight Control
Signal Fuses Usage
F21 BCM 4 –Body
Control Module 4 –
LED Headlamp Low
Beam Left Control
Signal, Right Front
Side Marker and
Auxiliary Park, Right
Rear Tail/Side Marker
Control Signal, Left
Rear Stop Lamp
Control Signal, Left
Rear Stop/Turn Lamp
Control Signal, Right
DRL Control Signal
F22 BCM 7 –Body
Control Module 7 –
Right Rear Stop
Lamp Control Signal,
Right Rear Stop/Turn
Lamp Control Signal,
Left Front Turn Lamp
Control Signal, Right
Rear Turn Control
Signal
F23 –
F24 Airbag

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Fuses UsageF25 DLC –Data Link
Connector
F26 –
F27 –
F28 –
F29 BCM 8 –Body
Control Module 8 –
Internal Driver/Fuel
Door Unlock Relay
Control Signal,
Internal Non-Driver
Door Lock Relay
Control Signal,
Internal All Door
Unlock Relay Control
Signal
F30 OVERHD CNSL –
Overhead Console
F31 STR/WHL/CNTRL –
Steering Wheel
Controls
F32 – Fuses Usage
F33 HVAC –Heating
Ventilation and Air
Conditioning Control
Module
F34 CGM –Central
Gateway Module
F35 HEATED SW –
Heated Seat Switch/
Hazard Switch
–
F36 Wireless Charger Module/USB
Charge Port
F37 APO FRT –Not Used
F38 OnStar
F39 Displays –Shifter
Interface Board/
Center Stack/Head
Up Display/
Instrument Panel
Cluster/HVAC
Display Fuses Usage
F40 OBS DET –Long
Range Radar Sensor/
Ultrasonic Park
Assist Module/
Camera Module/
External Object
Calculating Module/
Side Blind Zone Alert
Modules/Front
Camera Module