2023 CADILLAC XT4 air conditioning

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
Vehicle Care 357
Fuses Usage28 Rear Wipers –
Rear Wiper
29 –
30 Miscellaneous 2 –
Fuel Tank Zone
Module Run/
Crank –Direct
Current to Direct
Current
Transformer
Run/Crank –
Electronic Brake
Control Module
Run/Crank –
Instrument Panel
Cluster Run/
Crank
32 RDCM 2/Spare –
Rear Drive
Control Module 1/
Spare
33 FRT 2/HTD ST/ Spare–Front
Heated Seat
Power 2/Spare Fuses Usage
34 HFCR MDL/LGM/ WNDW SW –
Handsfree
Closure Release
Module/Liftgate
Module/Driver
and Passenger
Window Switches
35 –
36 FTZM –Fuel
Tank Zone
Module
39 FRT ST MASGE –
Driver Seat
Massage/
Passenger Seat
Massage
–
40 –
41 –
43 HTD/STR/WHL/ Spare–Heated
Steering Wheel/
Spare
– Fuses Usage
44 FRT 1/HTD/VENT ST/RR HTD ST/
Spare–Front
Heated Seat
Power Feed 1/
Front Vented
Seats/Rear
Heated Seats/
Spare
–
46 ECM IGN –
Engine Control
Module Ignition
48 RDCM 1/Spare –
Rear Drive
Control Module 1/
Spare
–
49 HVAC BLOWR MTR–Heating
Ventilation and
Air Conditioning
Control Blower
Motor
50 Spare

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
358 Vehicle Care
Fuses Usage51 Spare
54 Spare
55 Spare
56 STARTER MOTOR –Starter
Motor
57 –
58 –
59 HDLP HI BEAM LT/RT–High
Beam Headlamps
60 –
61 Spare
62 Spare
63 Spare
65 A/C CONTROL –
Air Conditioning
Compressor
Clutch Fuses Usage
67 Spare
68 Spare
69 –
70 TRLR PRK LAMP –TRAILER PARK
LAMPS
–
72 STRTR PINION –
STARTER
PINION
74 –
75 ECM PWRTRN IGN 2–Engine
Control Module
Power Train
Ignition 2
76 ECM PWRTRN IGN 1–Engine
Control Module
Power Train
Ignition 1 Fuses Usage
78 Horn
79 WASH PUMPS –
Front and Rear
Washer Pumps
81 ECM –Engine
Control Module
Battery/Spare
82 –
83 IGNITION COILS –Ignition Coils

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
Vehicle Care 359
Fuses Usage84 Miscellaneous 3 –
Canister Purge
Solenoid/
Step Cam
Exhaust Solenoid
Cylinder 2 and 3/
Step Cam Intake
Cylinder
Solenoids/Turbo
Bypass Solenoid/
Oxygen Sensor
(Pre & Post))/
Step Cam
Exhaust
Solenoids/O2
Heater/Oxygen
Heated Sensor/
Mass Airflow/
Inlet Air
Temperature/
Throttle Inlet
Absolute
Pressure/
Humidity Sensor/
Coolant Flow
Control Valve
85 Shunt Fuses Usage
86 –
87 –
88 AEROSHUTTER/ Spare–
Aeroshutter
–
89 –
92 TRLR ST/TRN RT/Spare –
Trailer Stop/Turn
Lamp Right/
Spare
93 AHL/CVS –
Canister Vent
Solenoid
95 –
96 –
99 – Relays Usage
20 REAR DEFOGGER –
Rear Defogger/
Outside Rear
View Mirrors
Defogger
25 Front Wiper Control
31 Run/Crank
37 Front Wiper Speed
42 –
64 Starter Motor
66 Powertrain 71 TRAILER PARK LAMPS –Trailer
Park Lamps
–
73 A/C CONTROL –
Air Conditioning
Controls
80 Starter Pinion
90 –

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
Vehicle Care 363
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

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
Service and Maintenance 427
For further assistance in
determining the most
suitable service maintenance
intervals for your vehicle,
please contact your
authorized GM Dealer.
Extreme service is for
vehicles mainly driven
off-road in four-wheel drive
or used in farming, mining,
forestry, or snow plowing.
Additional Required
Services—Severe Service
Every 72 000 km (45,000 mi)
.Change automatic
transmission fluid.
Every 120 000 km
(75,000 mi)
.Change rear axle fluid,
if equipped with AWD. Do
not directly power wash the
transfer case and/or front/
rear axle output seals. High
pressure water can
overcome the seals and
contaminate the transfer
case fluid. Contaminated
fluid will decrease the life of the transfer case and/or
axles and should be
replaced.
Owner Checks and
Services
Every Five Years
.Replace brake fluid every
five years. See Brake Fluid
0
345.
Every Seven Years
.Replace Air Conditioning
Desiccant every seven years.
The air conditioning system
requires maintenance every
seven years. This service
requires replacement of the
desiccant to help the
longevity and efficient
operation of the air
conditioning system. This
service can be complex. See
your dealer.
Multi-Point Vehicle
Inspection (MPVI)
A Multi Point Vehicle
Inspection (MPVI) completed
by a GM dealer technician is a
maintenance assessment of
your vehicle. The benefit of
the MPVI is to identify and
inform the customer of service
items that require immediate
attention and those that may
require attention in the future.
The technician will perform the
following checks on your
vehicle. For a complete list of
checks, inspections, and
services, see your dealer.
Some items may not apply to
your vehicle and/or region.
Diagnostics
.OnStar active, if equipped
.Service history/recall check
Engine Oil and Filter
.Engine oil
.Oil life monitor
‐ Reset oil life monitor

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
Technical Data 433
Vehicle Data
Capacities and Specifications
ApplicationCapacities
Metric English
Air Conditioning Refrigerant For the air conditioning system refrigerant type and charge amount, see the
refrigerant label under the hood. See your dealer for more information.
Engine Cooling System* 9.4 L 10.0 qt
Engine Oil with Filter 5.0 L 5.3 qt
Fuel Tank
IFWD 60.2 L 15.9 gal
IAWD 61.7 L 16.3 gal
Rear Axle (AWD) 0.87 L 0.92 qt
Wheel Nut Torque 190 Y140 lb ft
All capacities are approximate. When adding, be sure to fill to the approximate level, as
recommended in this manual. Recheck fluid level after filling.
*Engine cooling system capacity values are based on the entire cooling system and its
components.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
INDEX 461
IndexA
About Driving the Vehicle . . . . . 2
Accessories andModifications . . . . . . . . . . . . . . . . .327
Accessory Power . . . . . . . . . . . 253
Active
Fuel Management . . . . . . . . . 255
Adaptive Cruise Control . . . . . . . . . . . . . . . 273
Add-On Electrical
Equipment . . . . . . . . . . . . . . . . . . . 325
Additional OnStar Information . . . . . . . 453
Adjustments
Lumbar, Front Seats . . . . . . . 48
Agreements Trademarks andLicense . . . . . . . . . . . . . . . . . . . . . . 212
Air
Cleaner/Filter, Engine . . . . 337
Conditioning . . . . . . . . . . . . . . . . . 221
Filter Life System . . . . . . . . . 336
Filter, PassengerCompartment . . . . . . . . . . . . . 226
Vents . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Airbag System . . . . . . . . . . . . . . . . . 65 Check . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Airbag System (cont'd)
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . . . 70
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . . . . 72
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 70
What Will You See after an Airbag
Inflates? . . . . . . . . . . . . . . . . . . . . . . 70
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 69
Where Are the Airbags? . . . . . . . . . . . . . . . . . . . . . . 67
Airbags Adding Equipment to
the Vehicle . . . . . . . . . . . . . . . . . . . 77
Passenger Status Indicator . . . . . . . . . . . . . . . . . . . . . 125
Readiness Light . . . . . . . . . . . . . 124
Replacing System Parts after a Crash . . . . . . . 78
Servicing Airbag-Equipped
Vehicles . . . . . . . . . . . . . . . . . . . . . . 76
Alarm
Vehicle Security . . . . . . . . . . . . . 32