Cadillac CT6 I (2016-2019) transmissions system Wiring diagrams

2.0L TURBO 3.0L TURBO, 3.6L AUTOMATIC TRANSMISSION ASSEMBLY BACKUP LAMP CONTROL BATT POS VOLT BCM 6 FUSE BLK WIRE BLK/GRY WIRE BLU WIRE BODY CONTROL MODULE (LOWER LEFT END OF DASH) COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE (RIGHT FRONT OF ENGINE COMPT) GRN WIRE GRN/WHT WIRE GROUND GRY/BRN WIRE GRY/WHT WIRE GRY/YEL WIRE HI SPD GMLAN SER DATA (+) 1 HI SPD GMLAN SER DATA (+) 1 IMS MODE SW LOW REF HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES INSIDE REAR VIEW MIRROR LEFT BACKUP LAMP LOGIC PRNDL A SIG PRNDL B SIG PRNDL C SIG PRNDL P SIG PRNDL S SIG REAR BODY FUSE BLOCK REAR VIEW CAMERA REAR WINDOW SUNSHADE MODULE RED/WHT WIRE RIGHT BACKUP LAMP SYSTEM TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION PARK/ NEUTRAL SIGNAL 1 TRANSMISSIONS TRANSMISSIONS SYSTEM VIO/WHT WIRE W/ ACTIVE SAFETY W/O ACTIVE SAFETY WHT WIRE WHT/BLK WIRE WHT/GRY WIRE YEL/BLU WIRE YEL/GRN WIRE

5 VOLT REF ACC IGN VOLT ACTUATOR LO REF AMBIENT LT SENS SIG ANTI-LOCK BRAKES SYSTEM ANTI-LOCK BRAKES, CRUISE CONTROL, EXTERIOR LIGHTS SYSTEMS ANTI-LOCK BRAKES, ELECTRONIC SUSPENSION SYSTEMS ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM CRUISE CONTROL SYSTEM AUTO HOLD SW SIG AUTO STOP START SW SIG BATT POSITIVE VOLT BATTERY FUSE BLOCK BCM 1 FUSE BCM 2 FUSE BCM 3 FUSE BCM 4 FUSE BCM 8 FUSE BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/ORG WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LOWER LEFT END OF DASH) BRAKE APPLY SENS CTRL BRK APPLY SENS LO REF BRK APPLY SENS SIG BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/WHT WIRE BRN/YEL WIRE CAMERA WASH SIG CHARGE IND CTRL COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CRUISE CONTROL, ANTI-LOCK BRAKES, EXTERIOR LIGHTS SYSTEMS DIMM SW SIG DIMMER SW LOW REF DOOR LOCKS, ANTI-THEFT SYSTEMS DRV DR LK SW LK SIG DRV DR LK SW UNLK EXCEPT HYBRID HYBRID W/O SUPER CRUISE PACKAGE W/ SUPER CRUISE PACKAGE FUSE 1 N/A FUSE 3 FUSE 7 GAP UP/DOWN SW SIG GLOVE BOX DOOR RELEASE SIG GLOVE BOX DR RELEASE RLY CTRL GRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/WHT WIRE HAZARD SW SIG HDLP DIMM SW HI BEAM SIG HDLP SW FLASH TO PASS SIG HDLP SW HDLPS OFF SIG CTRL HDLP SW ON SIG HDLP SW PARK LP SIG HEADLIGHTS SYSTEM HORN SW SIG HORNS SYSTEM HOT AT ALL TIMES IGN MODE SW ACC LED SIG IGN MODE SW ST LED SIG IGN MODE SW VOLT IND CTRL IND DIMMING CTRL INSTRUMENT PANEL FUSE BLOCK INTERIOR LP CONTROL INTR LP DEFEAT SW SIG LED AMBIENT LIGHTING CTRL 2 LED BACKLIGHT DIMM CTRL LF TURN SIG SW SIG MULTI-FUNCTION ENERGY STORAGE CAPACITOR CONTROL MODULE POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER PUDDLE LP CTRL REAR BODY FUSE BLOCK RED/BLU WIRE RED/BRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE REMOTE FUNCTION ACTR TRANS SIG RESUME/ACCELERATE SW SIG RF TURN SIG SW SIG RUN/CRANK IGN 1 VOLT SECURITY IND CTRL SERIAL DATA SERIAL DATA (+) 1 ACTUATOR CTRL SERIAL DATA (+) 1 REMOTE FUNCTION ACTR RECEIVE SIG SERIAL DATA (-) (1) SERIAL DATA BUS 15 SERIAL DATA LIN BUS 11 SERIAL LIN BUS 4 SHIFT INTERLOCK SYSTEM STARTING/CHARGING SYSTEM STRG COLUMN LCK STATUS SIG TAP UP/TAP DOWN SW SIG TRACTION CTRL SW SIG 1 TRANSMISSIONS SYSTEM VEH ANTI-THEFT SYS IMMOBILIZER CTRL 12 VOLT REF VEH ANTI-THEFT SYS IMMOBILIZER LO REF VIO/BLK WIRE VIO/GRN WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/RED WIRE WINDSHIELD WASHER SW SIG WINDSHIELD WIPER SW HI SIG WINDSHIELD WIPER SW LO REF WINDSHIELD WPR SW LO SIG WIPER/WASHER SYSTEM YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE

ACTIVE SIG ACTUATOR LOCK CTRL BACKUP LAMP CTRL BATT POSITIVE VOL BATT POSITIVE VOLT BATT RVC FUSE BATTERY BATTERY CURRENT SENSOR BCM 6 FUSE BCM 7 FUSE BLK WIRE BLK/BRN WIRE BLK/VIO WIRE BLU WIRE BLU/BRN WIRE BLU/VIO WIRE BLU/WHT WIRE BODY CONTROL MODULE (LOWER LEFT END OF DASH) BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CORNERING LAMP RLY CTRL COURTESY LP SW SIG CRUISE CONTROL, ANTI-LOCK BRAKES SYSTEMS CRUISE/ETC/TCC BRAKE SIG CURRENT LOW REF CURRENT SENS CTRL ACC WAKEUP SERIAL DATA CURRENT SENS SIG DOME LP OFF IND CTRL DOOR LOCKS, ANTI-THEFT SYSTEMS DR LK ACTR UNLCK CTRL DR LK CTRL ENGINE CONTROLS SYSTEM EXTERIOR LIGHTS SYSTEM WIPER/WASHER SYSTEM EXTERIOR LIGHTS, HEADLIGHTS SYSTEMS FDBACK SIG FEEDBACK SIG FR WINDSHIELD WIP SW HI SIG FUEL DR LK RLY CTRL GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/VIO WIRE GRY/YEL WIRE HDLP HI BEAM RLY CTRL HDLP RLY COIL CTRL HDLP WASHER RLY CTRL HEADLIGHTS SYSTEM HEADLIGHTS, EXTERIOR LIGHTS SYSTEMS HI BEAM AUTO ON/OFF SW SIG HOOD STATUS B SIGNAL HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES INADVERTENT PWR CTRL INTERIOR LAMP CTRL KEY CAPTURE/COLUMN LOCK SHIFT POS SIG LED AMBIENT LIGHTING CTRL 1 LED BACKLIGHT DIMM CTRL LF DRL CTRL LF TURN SIG LP CTRL LH HDLP LO BEAM CTRL LH HEADLAMP RLY CTRL LH PARK LP CTRL LID INTERIOR RELEASE SIG LIFT GLASS/TRUNK RELS CTRL LIFTGATE AJAR SW SIG 1 LO SPD GMLAN SERIAL DATA LOGISTIC MODE RLY OPEN CTRL LOW REF LR TURN SIG LP CTRL PARK LK SOL CTRL PASS DR LK SW LK CTRL PASS DR LOCK SW UNLCK CTRL POWER DISTRIBUTION SYSTEM RAP RLY COIL CTRL REAR BODY FUSE BLOCK REAR COMPT LID LP CTRL RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RF DRL CTRL RF TURN SIG LP CTRL RH HDLP LO BEAM CTRL RH PARK LP CTRL RLY CLOSE CTRL RR CLOSURE HANDLE SW OPEN SIG RR LICENSE LP CTRL RR STOP LP CTRL RR TURN LP FEEDBACK SIG RR TURN SIG LP CTRL RUN/CRANK RLY COIL CTRL SECURITY LOCK RLY CTRL SERIAL DATA (-) (1) SERIAL DATA BUS 1 SERIAL DATA BUS 2 SERIAL DATA BUS 3 SERIAL DATA COMM ENABLE SHIFT INTERLOCK, TRANSMISSIONS SYSTEMS STP LP RLY COIL CTRL TRANSMISSIONS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/GRY WIRE VIO/WHT WIRE VIO/YEL WIRE W/O SUPER CRUISE PACKAGE W/ SUPER CRUISE PACKAGE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRY WIRE WHT/VIO WIRE WHT/YEL WIRE WINDSHIELD WASHER RLY CTRL WINDSHIELD WIPER MTR PRK SW SIG WINDSHIELD WIPER MTR RLY COIL CTRL WIPER/WASHER SYSTEM YEL WIRE YEL/BLU WIRE YEL/BRN WIRE

ACCELERATOR PEDAL POSITION SENSOR AUTOMATIC TRANSMISSION ASSEMBLY BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BRAKE PEDAL POSITION SENSOR BRN/BLK WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM CRUISE IND DRIVER INFORMATION CENTER DISPLAY EXCEPT HYBRID HYBRID GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/GRN WIRE IN SPD SIG HI SPD GMLAN DATA (-) 1 HI SPD GMLAN DATA (+) 1 INSTRUMENT CLUSTER LOGIC LOW SPD GMLAN SERIAL DATA OUT SPD SIG RED WIRE TRANS INTERMEDIATE SPD SIG TRANS POS SENS A TRANS POS SENS B TRANSMISSION CONTROL MODULE TRANSMISSION INPUT SHAFT SPEED SENSOR TRANSMISSION INTERMEDIATE SHAFT SPEED SENSOR TRANSMISSION OUTPUT SHAFT SPEED SENSOR TRANSMISSIONS SYSTEM VIO WIRE WHT WIRE WHT/GRN WIRE WHT/RED WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/WHT WIRE

"CHECK ENGINE" IND CTRL 1310 (OR 3723) 5985 (OR 3977) A/C COMPRESSOR CLUTCH RLY CTRL A/C REFRIGERANT PRESS SENS SIG A/C REFRIGERANT PRESSURE SENSOR ACCELERATOR PEDAL POSITION SENSOR ACCESSORY WAKEUP SER DATA 2 AIR CONDITIONING SYSTEM APP LOW REF 1 APP LOW REF 2 APP SIG (1) APP SIG (2) BATT POS VOLT BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/VIO WIRE BRAKE PEDAL POSITION SENSOR BRK POSITION SENS LOW REF BRK POSITION SENS SIG BRK VACUUM SENS SIG BRN/BLK WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE CNSTR VENT FUSE COMPUTER DATA LINES SYSTEM COOLING FAN SPD SIG COOLING FANS SYSTEM CRUISE CONTROL SYSTEM CRUISE/ETC/TCC BRK SIG DCV GND DOOR LOCKS, ANTI-THEFT SYSTEMS DRV MODE SW SIG ECM BAT FUSE ECM IGN FUSE ENGINE CONTROL MODULE (RIGHT FRONT OF ENGINE COMPT) EVAP CANISTER VENT SOL CTRL CHANGEOVER VALVE GND HTR RLY CTRL EVAP LEAK FUSE EVAPORATIVE EMISSION SYSTEM LEAK DETECTION PUMP ASSEMBLY EXCEPT HYBRID HYBRID FUEL PUMP FUEL PUMP CONTROLLER SIG FUEL PUMP PWR MDL FUSE FUEL PUMP, LEVEL SENSOR ASSEMBLY GRN WIRE GRN/WHT WIRE GRY WIRE GRY/RED WIRE HI SPD GMLAN SER DATA (+) 1 HI SPD GMLAN SER DATA (+) 3 HOOD STATUS A SIG HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED HUMIDITY SENS SIG INDUCTION AIR TEMP SENS SIG MASS AIR FLOW SENS SIG OUTSIDE AMBIENT AIR TEMP SENS SIG POWERTRAIN MAIN RLY FUSED SPLY 1 POWERTRAIN MAIN RLY FUSED SPLY 2 POWERTRAIN RLY COIL CTRL PRESS SENS SIG PRIMARY FUEL LEVEL SENSOR REAR BODY FUSE BLOCK RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/VIO WIRE RUN/CRANK IGN 1 VOLT SENS HI REF BANK 1 STARTER PINION SOL RLY CTRL STARTER RLY CTRL STARTING/CHARGING SYSTEM TRANSMISSION PARK/NEUTRAL SIG 1 TRANSMISSIONS SYSTEM VIO WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE WHT/VIO WIRE YEL WIRE YEL/VIO WIRE YEL/WHT WIRE

1 SENS 1 ACTUATOR LOW CTRL AIR PRESS SIG BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/WHT WIRE BRAKE BOOSTER VACUUM SENSOR BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE CANISTER SOL CTRL CHARGE IND CTRL COMPUTER DATA LINES SYSTEM CURRENT ADJUST SIG CURRENT PUMP SIG DATA 2 (+) DRIVER INFORMATION CENTER DISPLAY DUTY CYCLE SIG ENGINE CONTROL MODULE (RIGHT FRONT OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE GAUGE ENGINE COOLANT TEMPERATURE IND ENGINE OIL GAUGE ENGINE OIL IND EVAPORATIVE EMISSION PURGE SOLENOID VALVE FUEL GAUGE FUEL IND FUEL RAIL PRESSURE SENSOR GMLAN GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/GRN WIRE GRY/RED WIRE GRY/WHT WIRE HTD OXYGEN SENS GND IND CTRL INSTRUMENT CLUSTER LEVEL SENS SIG LO SPD LOGIC LOW CTRL BANK MALFUNCTION IND MAP SENS SIG OIL LEVEL SW SIG PRESS SENS LOW REF PRESS SENS SIG RLY FUSED SPLY 4 SENS COLLECTOR SIG SENS SIG BANK (1) SER SER DATA BUS 21 SIG SIG GND SOL LOW SIDE CTRL TEMP SIG TMAP LOW REF TRANSMISSIONS SYSTEM VACUUM PUMP GND VIO/BLK WIRE VIO/BLU WIRE VIO/GRY WIRE WHT/BLU WIRE WHT/GRY WIRE WHT/VIO WIRE YEL WIRE YEL/GRY WIRE YEL/RED WIRE YEL/VIO WIRE

AERO SHUTTER FUSE AIR CONDITIONING SYSTEM ANTI-LOCK BRAKES SYSTEM BATT POS VOLT BATTERY FUSE BLOCK BLK/BLU WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRY WIRE BLU/WHT WIRE BOIL HTR RLY CTRL BRK SIG BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COOL PUMP/ COIL ODD FUSE COOLING FANS SYSTEM CTRL SIG DATA OUT SIG DOOR LOCKS, ANTI-THEFT SYSTEMS ECM MAIN FUSE ELECTRONIC SUSPENSION SYSTEM ENGINE CONTROL MODULE ENGINE CONTROLS IGNITION RELAY EVAPORATIVE EMISSION VENT SOLENOID VALVE FUSE 8 FUSED SPLY 1 FUSED SPLY 2 FUSED SPLY 3 GRN WIRE GRN/WHT WIRE GRY WIRE HI FUEL FUSE HOOD STATUS A SIG HOT AT ALL TIMES HUMIDITY SENS SIG IGN 1 VOLT IND CTRL LO REF LO REF 1 LO REF 2 NON/ WALK FUSE PARK/NEUTRAL SIG (1) PRESS SENS SIG RED WIRE RED/GRN WIRE RED/WHT WIRE RLY COIL CTRL RLY CTRL SENS SIG SERIAL DATA (+) (3) SERIAL DATA (-) (1) SIG (1) SIG (2) SIG GND SOL CTRL STARTING/CHARGING SYSTEM SW SIG TRANSMISSIONS SYSTEM UNDERHOOD AUXILIARY FUSE BLOCK UNDERHOOD FUSE BLOCK VIO/BLU WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/YEL WIRE WAKEUP SERIAL DATA WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE WHT/VIO WIRE YEL WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE