Cadillac CT6 I facelift (2018-2023) underhood fuse block Wiring diagrams

3.6L 4.2L TURBO ACCESSORY WAKEUP SERIAL DATA BATTERY POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BRN/WHT WIRE CLUTCH C CTRL CLUTCH D CTRL CLUTCH E CTRL CLUTCH SOLENOID CONTROL COMPUTER DATA LINES SYSTEM DEFAULT DISABLE SOL CTRL ENGINE CONTROL MODULE (RIGHT FRONT OF ENGINE COMPT) ETRS OUT OF PARK SW 2 SIG ETRS OUT OF PARK SW SIG ETRS PRESS SW SIG GRN WIRE GRN/BLK WIRE GRN/GRY WIRE GRN/PPL WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IN SPD SIG LEFT UNDERHOOD FUSE BLOCK OUT SPD SIG PARK LOCK SOL CTRL POWER DISTRIBUTION SYSTEM PPL/WHT WIRE REAR BODY FUSE BLOCK RED WIRE RED/GRN WIRE RUN/CRANK IGNITION 1 VOLT SIGNAL GROUND TRANS AUXILIARY OIL PUMP CTRL TRANS CLUTCH F CTRL TRANS CLUTCH G CTRL TRANS CLUTCH H CTRL TRANS HI SIDE DRIVER 1 CTRL TRANS HI SIDE DRIVER 2 SIG TRANS IN SPD SENS SIG TRANS INTERMEDIATE SPD SIG TRANS MAINLINE PRESS SOL CTRL TRANS OIL TEMP SENS LO REF TRANS OIL TEMP SENS SIG TRANSMISSION CONTROL MODULE (RIGHT REAR OF ENGINE COMPT) UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLK WIRE VIO/WHT WIRE VIO/YEL WIRE W/ ENTIRE SPEED RANGE W/O ENTIRE SPEED RANGE WHT WIRE WHT/BLU WIRE WHT/YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE

3.6L 4.2L TURBO AUTOMATIC TRANSMISSION ASSEMBLY BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BLK WIRE BLU/BRN WIRE BRN WIRE COMPUTER DATA LINES SYSTEM ELECTRIC/ AUXILIARY TRANSMISSION FLUID PUMP GRN WIRE GRN/GRY WIRE GRN/ORG WIRE GRN/VIO WIRE GRN/WHT WIRE GROUND GRY WIRE GRY/BRN WIRE GRY/ORG WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IGNITION 1 VOLT INSTRUMENT PANEL FUSE BLOCK LOGIC NCA WIRE ORG/ WIRE REAR BODY FUSE BLOCK RED/BLU WIRE RED/VIO WIRE RIGHT UNDERHOOD FUSE BLOCK SELECTIVE CAT REDUCTION PWR MDL WAKE-UP SIG SERIAL DATA (+) (3) SERIAL DATA (-) 7 SERIAL DATA (-)7 BATTERY POS VOLT TRANSMISSION CONTROL SOLENOID VALVE 7 TRANSMISSION CONTROL SOLENOID VALVE 8 TRANSMISSION PARK VALVE LOCK SOLENOID ACTUATOR TRANSMISSION RANGE SELECTOR CONTROLS UNDERHOOD FUSE BLOCK VIO/BLK WIRE VIO/GRN WIRE VIO/WHT WIRE VIO/YEL WIRE W/ ENTIRE SPEED RANGE W/O ENTIRE SPEED RANGE WAKEUP SER DATA WHT WIRE

4.2L TWIN TURBO BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/WHT WIRE DATA COMM ENABLE ETHERNET BUS 3 (+) ETHERNET BUS 4 (-) ETHERNET BUS 6 (-) ETHERNET BUS 7 (-) EXCEPT 4.2L TWIN TURBO GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/WHT WIRE HEAD-UP DISPLAY HI SPD GMLAN SERIAL DATA (+) 8 HI SPD GMLAN SERIAL DATA (+) 9 HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (2) HOT W/ IGNITION MAIN RELAY ENERGIZED LEFT UNDERHOOD FUSE BLOCK LO SPD GMLAN SERIAL DATA 2 LO SPD SER DATA 2 RADIO RUN/CRANK IGNITION 1 VOLTAGE SER DATA COMM ENABLE SERIAL DATA GATEWAY MODULE UNDERHOOD FUSE BLOCK VIO/WHT WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE

4.2L TWIN TURBO BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/WHT WIRE CLUSTER DATA COMM ENABLE ETHERNET BUS 3 (+) ETHERNET BUS 4 (-) ETHERNET BUS 6 (-) ETHERNET BUS 7 (-) EXCEPT 4.2L TWIN TURBO GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/WHT WIRE HEAD-UP DISPLAY HI SPD GMLAN SERIAL DATA (+) 4 HI SPD GMLAN SERIAL DATA (+) 8 HI SPD GMLAN SERIAL DATA (+) 9 HI SPD GMLAN SERIAL DATA (-) (1) HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT INTERFACE CTRL MODULE LIN BUS 1 LEFT UNDERHOOD FUSE BLOCK LIN BUS 1 LO SPD GMLAN SERIAL DATA 2 LO SPD SER DATA 2 POWER DISTRIBUTION SYSTEM RADIO RUN/CRANK IGNITION 1 VOLTAGE SER DATA COMM ENABLE SERIAL DATA GATEWAY MODULE UNDERHOOD FUSE BLOCK VIO/WHT WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE

ACTIVE STEERING CONTROL MODULE BLK WIRE BLK/WHT WIRE BLU WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM GRN WIRE GRN/GRY WIRE GROUND GROUND 13 HOT W/ IGNITION MAIN RELAY ENERGIZED LOGIC MULTI-FUNCTION ENERGY STORAGE CAPACITOR CONTROL MODULE N/A NCA WIRE ORG/ WIRE PNK WIRE REAR BODY FUSE BLOCK RED WIRE RED/BRN WIRE RED/GRY WIRE RUN/CRANK IGNITION 1 VOLTAGE 14 SEATS SYSTEM SECONDARY FUSED BATTERY POSITIVE VOLTAGE 82 STEERING WHEEL AIR BAG COIL STEERING WHEEL HEATER FUSE HOLDER STEERING WHEEL HEATING SWITCH LED CONTROL STEERING WHEEL HEATING SWITCH SIGNAL STEERING WHEEL TOUCH SENSORS UNDERHOOD FUSE BLOCK VIO/GRY WIRE WHT WIRE

4.2L TURBO BATTERY FUSE BLOCK BLK WIRE BLK/BRN WIRE BLU WIRE BLU/BRN WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/VIO WIRE GRY/YEL WIRE HEADLAMP RELAY HOT AT ALL TIMES LEFT CORNERING LAMP RELAY LEFT FRONT SIDE MARKER LAMP LEFT INNER TAIL- LAMP LEFT REAR SIDE MARKER LAMP LEFT STOP/ TURN SIGNAL LAMP LEFT TAIL LAMP ASSEMBLY LEFT TAIL/ STOP LAMP LOGIC NCA WIRE RED WIRE RED/WHT WIRE RIGHT CORNERING LAMP RELAY RIGHT FRONT SIDE MARKER LAMP RIGHT HEADLAMP RELAY RIGHT INNER TAIL- LAMP UNDERHOOD AUXILIARY FUSE BLOCK UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLK WIRE VIO/GRY WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/GRY WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/BRN WIRE YEL/GRY WIRE YEL/WHT WIRE

BATT POS VOLT BLK WIRE BLK/BRN WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE COMPUTER DATA LINES SYSTEM ELECTRONIC BRAKE CONTROL MODULE GMLAN SER DATA - (1) GRN WIRE GRN/VIO WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/RED WIRE HOT AT ALL TIMES PARK BRAKE CONTROL SWITCH PASSENGER EXTERIOR DOOR HANDLE ASSEMBLY PASSENGER EXTERIOR DOOR HANDLE COURTESY LAMP PASSENGER OUTSIDE REAR VIEW MIRROR PASSENGER OUTSIDE REAR VIEW MIRROR COURTESY LAMP PASSENGER OUTSIDE REAR VIEW MIRROR LAMPS ASSEMBLY RED/YEL WIRE RIGHT TURN SIGNAL REPEATER LAMP SPLY VOL SW SIG UNDERHOOD FUSE BLOCK VIO/BLK WIRE VIO/GRY WIRE VIO/WHT WIRE VOL REF WHT WIRE WHT/YEL WIRE YEL WIRE YEL/BRN WIRE YEL/GRY WIRE YEL/RED WIRE YEL/WHT WIRE

3.6L 4.2L BATTERY FUSE BLOCK BLK WIRE BODY CONTROL MODULE BRN/GRY WIRE BRN/WHT WIRE GRN/WHT WIRE HORN ASSEMBLY HORN RELAY HORN RLY CTRL HORN SW SIG HORN SWITCH HOT AT ALL TIMES NCA WIRE RED WIRE RIGHT UNDERHOOD FUSE BLOCK STEERING WHEEL AIR BAG COIL UNDERHOOD AUXILIARY FUSE BLOCK UNDERHOOD FUSE BLOCK

3.6L 4.2L TURBO ACTUATOR ACTUATOR CTRL ACTUATOR LO REF BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLU WIRE BLU/VIO WIRE BRN WIRE BRN/GRN WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DOOR AJAR IND DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE ENGINE HOOD SWITCH ETHERNET BUS 7 (-) GMLAN SER DATA GMLAN SERIAL DATA - 1 GRN WIRE GRN/VIO WIRE GRY WIRE GRY/GRN WIRE GRY/WHT WIRE HOOD OPEN SW SIG HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT CLUSTER LCK STATUS SIG LO SPD GMLAN SERIAL DATA 2 LOCK SIG LOGIC LOGIC GND OFF/ACC IGN VOLT OVERHEAD CONSOLE MULTI- FUNCTION SWITCH PASSENGER DOOR LOCK SWITCH POWER SUPPLY TRANSFORMER PPL RECEIVER SIG RED/BLU WIRE RED/GRY WIRE RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER RUN/CRANK IGN 1 VOLT STEERING COLUMN LOCK MODULE (IF EQUIPPED) SUPLY VOLT TRANSMIT SIG UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLK WIRE VIO/GRY WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/GRN WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/VIO WIRE

3.6L 4.2L TURBO ACCESSORY WAKEUP SERIAL DATA B+ VOLT BLK/BRN WIRE BLK/WHT WIRE BLU WIRE BLU/GRY WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COUNTER CLOCKWISE CTRL DRIVER INFORMATION CENTER DISPLAY GMLAN SERIAL DATA - 1 GRY WIRE GRY/GRN WIRE HOT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INCREMENTAL ENCODER DIR SIG INCREMENTAL ENCODER IMPULSE SIG INCREMENTAL ENCODER SENS LOW REF INSTRUMENT CLUSTER LEFT UNDERHOOD FUSE BLOCK LO SPD GMLAN SERIAL DATA 2 LOGIC LOW REF OIL TEMP SENS SIG POWER DISTRIBUTION SYSTEM RED/WHT WIRE RIGHT UNDERHOOD FUSE BLOCK RUN/CRANK IGN 1 VOLT SIG GND TRANS OIL TEMP SENS LOW REF TRANS OIL TEMP SENS SIG TRANSFER CASE CONTROL MODULE (RIGHT REAR OF ENGINE COMPT) TRANSFER CASE FLUID TEMPERATURE SENSOR TRANSFER CASE MOTOR (LEFT REAR OF TRANSFER CASE) TRANSFER CASE MTR CLOCKWISE CTRL UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLK WIRE VIO/RED WIRE VIO/YEL WIRE WHT WIRE WHT/GRN WIRE YEL WIRE YEL/GRY WIRE YEL/VIO WIRE