Cadillac XT4 I (2018-2023) red Wiring diagrams

BLK WIRE COMPUTER DATA LINES SYSTEM GRN/GRY WIRE GRY WIRE INSTRUMENT PANEL COMPARTMENT LAMP LEFT REAR DOME/ READING LAMPS LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR WINDOW SWITCH LOGIC LEFT SUNSHADE LEFT SUNSHADE MIRROR LAMP RED WIRE RIGHT REAR DOME/ READING LAMPS RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR WINDOW SWITCH LOGIC RIGHT SUNSHADE RIGHT SUNSHADE MIRROR LAMP WHT/BRN WIRE WHT/YEL WIRE

ADAPTIVE CRUISE IND ADAPTIVE CRUISE SWITCH AUTOMATIC TRANSMISSION ASSEMBLY BLK/BLU WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/RED WIRE CANCEL SWITCH COMPUTER DATA LINES SYSTEM CRUISE IND DATA 2 (+) DRIVER INFORMATION CENTER DISPLAY GAP UP/GAP DOWN SWITCH GMLAN GRN/BRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE HIGH SPD GMLAN SERIAL DATA (+) 1 IGN INSTRUMENT CLUSTER LEFT STEERING WHEEL CONTROLS SWITCH LOGIC LOW SPD LT BLU WIRE NCA WIRE OUTPUT SPEED SIGNAL RED WIRE RES+ SERIAL SET- STEERING WHEEL AIR BAG COIL TRANSMISSION CONTROL MODULE (ON TOP FRONT OF TRANSMISSION) TRANSMISSION OUTPUT SHAFT SPEED SENSOR TRANSMISSIONS SYSTEM VIO WIRE VIO/GRY WIRE WHT WIRE WHT/RED WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/WHT WIRE

ACC IGN VOLT ACTIVE SIG ANT 1 SIG HI ANT 1 SIG LO ANT 2 SIG HI ANT 2 SIG LO ANT 3 SIG HI ANT 3 SIG LO ANT SIG HI ANT SIG LO BATT POSITIVE VOLT BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/YEL WIRE CENTER CONSOLE FRONT KEYLESS ENTRY ANTENNA CENTER CONSOLE REAR KEYLESS ENTRY ANTENNA COMPUTER DATA LINES SYSTEM DOOR AJAR IND DRIVER INFORMATION CENTER DISPLAY DRV DR ANT SIG HI DRV DR ANT SIG LO DRV DR HANDLE SW SIG DRV DR OPEN SW SIG GRN WIRE GRN/BLK WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE HANDS-FREE LIFTGATE SENSOR LAMP HANDSFREE PROJECTION LAMP CTRL HOT AT ALL TIMES IGNITION MODE SWITCH INSTRUMENT CLUSTER KEYLESS ENTRY CONTROL MODULE LEFT REAR EXTERIOR DOOR HANDLE ASSEMBLY LEFT REAR EXTERIOR DOOR HANDLE COURTESY LAMP LEFT REAR EXTERIOR DOOR HANDLE SWITCH LO SPD GMLAN SERIAL DATA LO SPD GMLAN SERIAL DATA 2 LOGIC LR DR HANDLE SW SIG PASS DR ANT SIG HI PASS DR ANT SIG LO PASS DR HANDLE SW SIG PASSIVE START SW 2 LO REF PASSIVE START SW SIG 2 POWER DISTRIBUTION SYSTEM RAP RLY 2 COIL CTRL REAR COMPARTMENT KEYLESS ENTRY ANTENNA REAR FASCIA KEYLESS ENTRY ANTENNA RED WIRE RED/WHT WIRE RIGHT REAR EXTERIOR DOOR HANDLE ASSEMBLY RIGHT REAR EXTERIOR DOOR HANDLE COURTESY LAMP RIGHT REAR EXTERIOR DOOR HANDLE SWITCH RR DR HANDLE SW SIG RUN/CRANK IGN 1 VOLT STRG CLMN LK SIG UNDERHOOD FUSE BLOCK VIO WIRE VIO/GRY WIRE WHT WIRE WHT/GRN WIRE WHT/YEL WIRE YEL WIRE YEL/GRY WIRE

BATT POS VOLT BLK WIRE BLU WIRE BLU/VIO WIRE BLU/YEL WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CONTENT THEFT DETERRENT SENSOR DISABLE SWITCH DATA BUS 4 DISABLE SIG DRIVER EXTERIOR DOOR HANDLE ASSEMBLY DRIVER EXTERIOR DOOR HANDLE COURTESY LAMP DRIVER EXTERIOR DOOR HANDLE SWITCH FUEL FILL DOOR LOCK RELAY GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/GRN WIRE HOT W/ IGNITION MAIN RELAY ENERGIZED LED CTRL LEFT FRONT DOOR HANDLE KEYLESS ENTRY ANTENNA LEFT REAR WINDOW SWITCH LOGIC LR DR AJAR NCA WIRE NETWORK BUS 1 PASSENGER EXTERIOR DOOR HANDLE ASSEMBLY PASSENGER EXTERIOR DOOR HANDLE COURTESY LAMP PASSENGER EXTERIOR DOOR HANDLE SWITCH PPL RED WIRE RED/GRN WIRE RIGHT FRONT DOOR HANDLE KEYLESS ENTRY ANTENNA SW SIG ULTRASONIC INTRUSION SENSOR 1 ULTRASONIC INTRUSION SENSOR 2 UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLK WIRE VIO/GRY WIRE VIO/WHT WIRE WHT WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE

ALERT LED CTRL BATT POS VOLT BLK/WHT WIRE BLU WIRE BLU/GRY WIRE BODY CONTROL MODULE BRN/BLU WIRE COLLISION ALERT INDICATORS COLLISION ALERT SWITCH COMM ENABLE COMPUTER DATA LINES SYSTEM DAY LED CTRL ETHERNET BUS 7 (-) FORWARD COLLISION ALERT SWITCH GRN WIRE GROUND GRY WIRE GRY/GRN WIRE GRY/WHT WIRE HI SPD GMLAN (-) 1 HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IGN 1 VOLT INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK INSTRUMENT PANEL MULTI- FUNCTION SWITCH LANE DEPARTURE WARNING ASSIST IND LANE DEPARTURE WARNING ASSIST SWITCH LANE DEPARTURE WARNING DISABLE LANE DEPARTURE WARNING IND LANE DEPARTURE WARNING IND CTRL LEFT STEERING WHEEL CONTROLS SWITCH LO SPD GMLAN SERIAL DATA LOGIC LOW SPEED GMLAN SERIAL DATA 2 LT BLU WIRE POWER SUPPLY TRANSFORMER RED WIRE RED/GRN WIRE RED/GRY WIRE RED/YEL WIRE STEERING WHEEL AIR BAG COIL SUPPLY VOLTAGE 1 SW SIG UNDERHOOD FUSE BLOCK UP/DOWN SW SIG VIO WIRE VIO/GRY WIRE VOLT REF WHT WIRE WHT/BLU WIRE WHT/GRY WIRE WINDSHIELD FRONT VIEW CAMERA

BACKUP LAMP CTRL BATTERY POST VOLT BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM FF LOW LVL AUDIO (-) LOW REF GRN WIRE GRN/BLK WIRE GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK LEFT STEERING WHEEL CONTROLS SWITCH LF AUDIO LOW REF SER DATA COMM ENABLE LF LOW LVL AUDIO SIG LO SPD GMLAN SER DATA 2 LOGIC LR LOW LVL AUDIO (-) LOW REF LR LOW LVL AUDIO SIG LT BLU/RED WIRE MICROPHONE LO REF MICROPHONE SIG MUTE NCA WIRE POWER SUPPLY TRANSFORMER RADIO RED WIRE RED/BLU WIRE RED/VIO WIRE RED/YEL WIRE RF LOW LVL AUDIO (-) LOW REF RF LOW LVL AUDIO SIG RR LOW LVL AUDIO SIG SER DATA SER DATA (+) 9 SIG GND STEERING WHEEL AIR BAG COIL SUPPLY VOLT 1 VIO/YEL WIRE VOICE VOICE RECOGNITION AUDIO SIG CELLULAR TELEPHONE MICROPHONE SIG VOICE RECOGNITION LO REF VOICE RECOGNITION AUDIO SIG W/ ONSTAR W/O ONSTAR WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE

AUDIO LOW REF AUDIO SIG + BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE CELL COAX COMPUTER DATA LINES SYSTEM DOWN GPS GRN WIRE GRN/BLK WIRE GRY/GRN WIRE GRY/YEL WIRE HIGH SPD GMLAN INFOTAINMENT CONTROL SWITCH LEFT LEFT FRONT MOBILE TELEPHONE MICROPHONE LOGIC LOW REF LT BLU/RED WIRE MICROPHONE (-) LOW REF MICROPHONE SIG NCA WIRE PNK WIRE PPL/YEL WIRE RED WIRE RED/BLU WIRE RED/VIO WIRE RIGHT RIGHT FRONT MOBILE TELEPHONE MICROPHONE RIGHT STEERING WHEEL CONTROLS SWITCH SEEK DOWN SEEK UP SEL SERIAL DATA (-) 9 VIO/YEL WIRE VOL (-) W/ ONSTAR W/O ONSTAR WHT/BLK WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE

BACKUP LAMP CTRL BATTERY POSITIVE VOLTAGE BATTERY POST VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM DOWN GRN WIRE GRN/BLK WIRE GROUND GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK LEFT LO SPD GMLAN SER DATA 2 LOGIC LT BLU/RED WIRE MICROPHONE LO REF MICROPHONE SIG PNK WIRE POWER SUPPLY TRANSFORMER RADIO RED WIRE RED/BLU WIRE RED/VIO WIRE RED/YEL WIRE RIGHT RIGHT STEERING WHEEL CONTROLS SWITCH SEEK DOWN SEEK UP SER DATA SER DATA (+) 9 SER DATA COMM ENABLE STEERING WHEEL AIR BAG COIL SUPPLY VOLTAGE 1 VIO/YEL WIRE VOICE RECOGNITION AUDIO SIG VOICE RECOGNITION LO REF VOL (-) VOL - SEL W/ ONSTAR W/O ONSTAR WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE

AUDIO LOW REF AUDIO SIG + BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE CELL COAX COMPUTER DATA LINES SYSTEM GPS GRN WIRE GRY/GRN WIRE GRY/YEL WIRE HIGH SPD GMLAN INFOTAINMENT CONTROL SWITCH LEFT FRONT MOBILE TELEPHONE MICROPHONE LEFT STEERING WHEEL CONTROLS SWITCH LOGIC LOW REF LT BLU/RED WIRE MICROPHONE (-) LOW REF MICROPHONE SIG MUTE NCA WIRE PNK WIRE PPL/YEL WIRE RED WIRE RED/BLU WIRE RED/VIO WIRE RIGHT FRONT MOBILE TELEPHONE MICROPHONE SERIAL DATA (-) 9 VIO/YEL WIRE VOICE W/ ONSTAR W/O ONSTAR WHT/BLK WIRE WHT/GRN WIRE

ALL WHEEL DRIVE PWR TRANSFER MTR CTRI B BATTERY POSITIVE VOLT BLK WIRE BLK/VIO WIRE BLU WIRE BLU/ORG WIRE BLU/WHT WIRE BLU/YEL WIRE BRN/GRN WIRE COMPUTER DATA LINES SYSTEM DIFFERENTIAL CLUTCH PUMP (BOTTOM OF REAR DIFFERENTIAL) GRN/BRN WIRE HI SPD GMLAN SERIAL DATA (+) 1 GND HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (2) HI SPD GMLAN SERIAL DATA (-) 1 BATTERY POSITIVE VOLT HOT AT ALL TIMES MOTOR HALL-EFFECT SENS SIG 1 MOTOR HALL-EFFECT SENS SIG 2 MOTOR HALL-EFFECT SENS SIG 3 MOTOR HALL-EFFECT SENS SPLY VOLT PPL MOTOR HALL-EFFECT SENS LOW VOLT MOTOR U-PHASE MOTOR V-PHASE MOTOR W-PHASE POSI SENSOR LOW REF POSI SENSOR VOLT REF POWER TRANSFER UNIT SHIFT ACTUATOR PPL PPL/WHT WIRE PWR TRANSFER MTR CTRL A PWR TRANSFER UNIT POSI SENSOR SIG REAR DIFFERENTIAL CLUTCH CONTROL MODULE REAR DIFFERENTIAL CLUTCH SOLENOID VALVE RED WIRE RED/BLK WIRE RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE SERIAL DATA COMM ENABLE UNDERHOOD FUSE BLOCK VALVE 1 LOW CTRL SIG VALVE 2 LOW CTRL SIG VALVE HIGH CTRL SIG VIO/BRN WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/ORG WIRE WHT/RED WIRE