Cadillac XT4 2023 Fuse Box Info
Passenger compartment fuse box location:
The instrument panel fuse box is on the driver side of the instrument panel, between the steering wheel and the door.
Engine compartment fuse box location:
Fuse Box Diagram | Layout
Passenger compartment fuse box:
| Fuse/Relay N° | Functions |
| 1 | WNDW LT – Left Power Window |
| 2 | WNDW RT – Right Power Window |
| 3 | - |
| 4 | DC-DC BAT 2/1 – Direct Current to Direct Current Converter 2 |
| 5 | APO CARGO – Auxiliary Power Outlet – Cargo |
| 6 |
HTD SEAT BATT 1 – Heated Seat Battery 1 – |
| 7 |
HTD SEAT BATT 2 – Not used – |
| 8 | BCM 3 – Body Control Module 3 – LED Headlamp Low Beam Right Control Signal, Right Front Turn Lamp Control Signal, Left Front Side Marker and Auxiliary Park, Left Rear Tail/Side Marker Control Signal, Left Daytime Running Lamps Control Signal |
| 9 | ELEC PRK/BRK – Electric Park Brake |
| 10 | 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 |
| 11 | - |
| 12 | - |
| 13 | - |
| 14 | - |
| 15 | TCM SS – Transmission Control Module (Stop/ Start) |
| 16 | AMP – Amplifier |
| 17 | - |
| 18 |
VPM – Video Processing Module – |
| 19 |
PWR STR COL – Power Steering Column – |
| 20 | BCM 6 – Body Control Module 6 – LED Backlight Control, Interior Lighting Inadvertent Load Control Signal, Fuel Door Lock Control Signal, LED Backlight Control Signal |
| 21 | 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 |
| 22 | 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 |
| 23 | - |
| 24 | Airbag |
| 25 | DLC – Data Link Connector |
| 26 | - |
| 27 | - |
| 28 | - |
| 29 | 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 |
| 30 | OVERHD CNSL – Overhead Console |
| 31 | STR/WHL/CNTRL – Steering Wheel Controls |
| 32 | - |
| 33 | HVAC – Heating Ventilation and Air Conditioning Control Module |
| 34 | CGM – Central Gateway Module |
| 35 |
HEATED SW – Heated Seat Switch/Hazard Switch – |
| 36 | Wireless Charger Module/USB Charge Port |
| 37 | APO FRT – Not Used |
| 38 | OnStar |
| 39 | Displays – Shifter Interface Board/Center Stack/Head Up Display/ Instrument Panel Cluster/HVAC Display |
| 40 | OBS DET – Long Range Radar Sensor/ Ultrasonic Park Assist Module/Camera Module/External Object Calculating Module/ Side Blind Zone Alert Modules/Front Camera Module |
| 41 | BCM 1 SS – Body Control Module 1 (Stop/Start) – LED Indicator Lighting Control, Accessory LED Control, Run-Start LED Control, Ambient Lighting LED Control 2, Liftgate Latch Motor Control Signal, Rear Wiper Control Signal, High Beam Lamp Control (Direct Drive), Rear Fog LED Lamp Control Signal, Windshield Washer Pump Motor Control Signal, Run/Crank Relay Control Signal, ECM/TCM ACC Wakeup Control Signal, Left Rear Turn Control Signal, Rear Wiper Wash Pump Control Signal, Brake Pedal Apply Signal |
| 42 | RDO – Radio |
| 43 |
APO CNSL – Console Auxiliary Power Outlet (Circuit Breaker) – |
| 44 |
Spare – |
| K1 | - |
| K2 | RAP/ACCY – Retained Accessory Power |
| K3 | Content Theft – Not Used |
| K4 | - |
| K5 | - |
Engine compartment fuse box:
| Fuse/Relay N° | Functions |
| 3 | EBCM – Electronic Brake Control Module |
| 4 | - |
| 5 | - |
| 6 | - |
| 7 |
TRLR ST/TRN LT – Left Trailer Stop/Turn Lamp – |
| 8 | MSM – Memory Seat Module – Driver and Passenger |
| 9 | - |
| 10 |
SADS – Semi-active Damping System/Spare – |
| 11 | DC DC BAT 1/2 – Direct Current to Direct Current Converter 2 |
| 12 | REAR DEFOG – Rear Window Defogger |
| 13 | OSRVM DEFOG – Outside Rear View Mirrors Defogger |
| 14 | - |
| 15 | PEPS – Passive Entry Passive Start Module |
| 16 | FRT WIPERS – Front Wiper |
| 17 |
PASS/PWR/SEAT – Passenger Power Seat – |
| 18 | L/GATE MTR/Spare – Liftgate Motor/Spare |
| 19 | DRVR/PWR/SEAT – Driver Power Seat/ Memory Seat Module/Driver Seat Massage Control |
| 20 | REAR DEFOGGER – Rear Defogger/Outside Rear View Mirrors Defogger |
| 21 |
Sunroof – Power Sunroof – |
| 22 | - |
| 23 | - |
| 25 | Front Wiper Control |
| 26 | TCM IGN – Transmission Control Module/Ignition |
| 27 | Miscellaneous 1 – Inside Rear View Mirror – Shifter Interface Board Module Run/Crank – Central Gateway Module Run/Crank – Heating Ventilation and Air Conditioning Control Module Run/Crank ignition 3 – Forward Collision Alert Display |
| 28 | 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 |
| 31 | Run/Crank |
| 32 | RDCM 2/Spare – Rear Drive Control Module 1/Spare |
| 33 | FRT 2/HTD ST/Spare – Front Heated Seat Power 2/Spare |
| 34 | HFCR MDL/LGM/WNDW SW – Handsfree Closure Release Module/Liftgate Module/Driver and Passenger Window Switches |
| 35 | - |
| 36 | FTZM – Fuel Tank Zone Module |
| 37 | Front Wiper Speed |
| 39 |
FRT ST MASGE – Driver Seat Massage/ Passenger Seat Massage - |
| 40 | - |
| 41 | - |
| 42 | - |
| 43 |
HTD/STR/WHL – Heated Steering Wheel/Spare – |
| 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 |
| 51 | 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 |
| 64 | Starter Motor |
| 65 | A/C CONTROL – Air Conditioning Compressor Clutch |
| 66 | Powertrain |
| 67 | Spare |
| 68 | Spare |
| 69 | - |
| 70 |
TRLR PRK LAMP– TRAILER PARK LAMPS – |
| 71 |
TRAILER PARK LAMPS – Trailer Park Lamps - |
| 72 | STRTR PINION – Starter Pinion |
| 73 | A/C CONTROL – Air Conditioning Controls |
| 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 |
| 78 | Horn |
| 79 | WASH PUMPS – Front and Rear Washer Pumps |
| 80 | Starter Pinion |
| 81 | ECM – Engine Control Module Battery/Spare |
| 82 | - |
| 83 | IGNITION COILS – Ignition Coils |
| 84 | 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 |
| 86 | - |
| 87 | - |
| 88 |
AEROSHUTTER/Spare – Aeroshutter – |
| 89 | - |
| 90 | - |
| 92 | TRLR ST/TRN RT/Spare – Trailer Stop/Turn Lamp Right/Spare |
| 93 | AHL/CVS – Canister Vent Solenoid |
| 94 | - |
| 95 | - |
| 96 | - |
| 98 | - |
| 99 | - |
