Buick Regal VI (2017-2020) computer data lines system Wiring diagrams

5 VOLT REF ACC IGN VOLT ACC WAKEUP SERIAL DATA ACTUATOR LO REF AMBIENT LT SENS SIG ANTI-LOCK BRAKES, CRUISE CONTROL, EXTERIOR LIGHTS SYSTEMS ANTI-LOCK BRAKES, ELECTRONIC SUSPENSION SYSTEMS ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM CRUISE CONTROL SYSTEM BATT POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LOWER CENTER OF DASH) BRAKE APPLY SENS CTRL BRK APPLY SENS LO REF BRK APPLY SENS SIG BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM COURTESY LP SW SIG CRUISE CONTROL SYSTEM CRUISE CONTROL, ANTI-LOCK BRAKES, EXTERIOR LIGHTS SYSTEMS DIMM SW SIG DIMMER SW LOW REF DOOR LOCKS, ANTI-THEFT SYSTEMS ELECTRONIC SUSPENSION SYSTEM ENGINE START/ STOP EXTERIOR LIGHTS SYSTEM WIPER/WASHER SYSTEM FRONT FOG LAMP SW SIG FUSE 20 FUSE 21 FUSE 3 FUSE 5 FUSE 8 GAP UP/DOWN SW SIG GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/VIO WIRE GRY/WHT WIRE GRY/YEL WIRE HAZARD LED DIMMING SIGNAL HAZARD SW LEFT TURN SIG HAZARD SW RH TURN SIG 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 HOOD AJAR SWITCH SIGNAL 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 IGNITION MODE SWITCH IND DIMMING CTRL INSTRUMENT PANEL FUSE BLOCK KEY CAPTURE/COLUMN LOCK SHIFT POS SIG LED AMBIENT LIGHTING CTRL 2 LED BACKLIGHT DIMM CTRL LH HDLP LO BEAM CTRL LH PARK LP CTRL LIFT GLASS/TRUNK RELS CTRL LIN SERIAL BUS 4 LOG MODE RLY CLOSE CTRL LR STOP LAMP CTRL POWER DISTRIBUTION SYSTEM PUSH BUTTON START ACTIVE SIG RAP RLY COIL CTRL REAR WINDOW WIPER SW SIG RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/YEL WIRE REMOTE FUNCTION ACTR TRANS SIG REMOTE FUNCTION ACTUATOR CTRL RF TURN SIG LP CTRL RH HDLP LO BEAM CTRL RH PARK LP CTRL RR LICENSE LP CTRL RR WIND WASHER RLY CTRL RR WIPER MTR RLY COIL CTRL RUN/CRANK IGN 1 VOLT RUN/CRANK RLY COIL CTRL SECURITY IND CTRL SERIAL DATA SERIAL DATA (+) 1 REMOTE FUNCTION ACTR RECEIVE SIG SERIAL DATA (-) (1) SERIAL DATA COMM ENABLE SET/COAST/RESUME SW SIG SHIFT INTERLOCK, TRANSMISSIONS SYSTEMS SHIFT SEL SW SIG SIG GND SOUND SYSTEMS CRUISE CONTROL SYSTEM STEERING WHEEL SIG 1 STP LP RLY COIL CTRL TAP UP/TAP DOWN SW SIG TRACTION CTRL SW SIG 1 TRANSMISSIONS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM VEH ANTI-THEFT SYS IMMOBILIZER CTRL 12 VOLT REF VEH ANTI-THEFT SYS IMMOBILIZER LO REF LIN SERIAL DATA VIO WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE WINDSHIELD WASHER RLY CTRL WINDSHIELD WASHER SW SIG WINDSHIELD WIPER MTR PRK SW SIG WINDSHIELD WIPER MTR RLY COIL CTRL WINDSHIELD WIPER SW HI SIG WINDSHIELD WIPER SW LO REF WINDSHIELD WPR SW LO SIG WIPER/WASHER SYSTEM WIRELESS SYS CHARGE IND CTRL YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE

ACC IGN VOLT ANTI-LOCK BRAKES SYSTEMS BACKUP LAMP CONTROL BATT POSITIVE VOL BATT POSITIVE VOLT BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/WHT WIRE BODY CONTROL MODULE (LOWER CENTER OF DASH) BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER COMM RIDE TOUR LED CTRL HDLP HI BEAM RLY CTRL COMPUTER DATA LINES SYSTEM CRUISE/ETC/TCC BRAKE SIG DOME LP OFF IND CTRL DOOR LOCK ACTUATOR LOCK CTRL DOOR LOCK ACTUATOR LOCK CTRL 2 DOOR LOCKS, ANTI-THEFT SYSTEMS DR LK ACTR UNLCK CTRL DRV DR LK SW LK SIG DRV DR LOCK SW UNLOCK SIG ELECTRONIC SUSPENSION SYSTEM FOG LAMP RELAY CONTROL FR WINDSHIELD WIP SW HI SIG FRONT TURN LAMP FEEDBACK SIG FUSE 18 FUSE 22 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE HEADLIGHTS SYSTEM HIGH SPEED GMLAN SERIAL DATA (-) (1) HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES INADVERTENT PWR CTRL INSTRUMENT PANEL FUSE BLOCK INTERIOR LAMP CTRL INTR LP DEFEAT SW SIG KEYLESS ENTRY CONTROL MODULE LED AMBIENT LIGHTING CTRL 1 LED BACKLIGHT DIMM CTRL LEFT HEADLAMP RELAY CTRL LF DRL CTRL LF TURN SIG LP CTRL LIFTGATE AJAR SW SIG 1 LO SPD GMLAN SERIAL DATA LOCAL NETWORK SERIAL DATA BUS 1 LOCAL NETWORK SERIAL DATA BUS 2 LOCAL NETWORK SERIAL DATA BUS 3 LOG MODE RLY OPEN CTRL PARK LK SOL CTRL PASS DR LOCK SW UNLOCK CTRL PASS DR LOCK SWITCH LOCK CTRL PASSIVE START SW 2 LOW REF PASSIVE START SW SIG 2 POWER DISTRIBUTION SYSTEM REAR COMPT LID LP CTRL RED/GRY WIRE RED/WHT WIRE RF TURN LAMP FEEDBACK SIG RH HEADLAMP RELAY CONTROL RIGHT FRONT DRL CONTROL RR CLOSURE HANDLE SW OPEN SIG RR STOP LAMP CTRL COMPUTER COMM RIDE SPORT LED CTRL RUN/CRANK IGN 1 VOLT SHIFT INTERLOCK, TRANSMISSIONS SYSTEMS SPORT MODE SW SIG TRUNK, TAILGATE, FUEL DOORS SYSTEM VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/ORG WIRE WHT/VIO WIRE WHT/YEL WIRE WIPER/WASHER SYSTEM YEL WIRE YEL/BLU WIRE YEL/VIO WIRE

2.0L TURBO 2.0L TURBO 3.6L 3.6L BATT POS BATTERY FUSE BLOCK BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE COMPUTER DATA LINES SYSTEM COOLING FAN COOLING FAN CTRL SIG COOLING FAN FUSE COOLING FAN MOTOR (CENTER BACK OF RADIATOR) COOLING FAN/DC DC CONVERTER 2 FUSE CTRL SIG DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE ENGINE CONTROL MODULE/ IGNITION FUSE ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMP SENS SIG ENGINE COOLANT TEMPERATURE GAUGE ENGINE COOLANT TEMPERATURE IND ENGINE COOLANT TEMPERATURE SENSOR FUSE 5 GMLAN SERIAL DATA - 1 GRY/VIO WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT CLUSTER J190 (2.0L TURBO) J165 (3.6L) LEFT COOLING FAN MOTOR (LEFT BACK SIDE OF RADIATOR) LOGIC LOW REF (1) MOST SERIAL DATA (+) RED WIRE RED/BLU WIRE RED/BRN WIRE RED/WHT WIRE RIGHT COOLING FAN MOTOR (RIGHT BACK SIDE OF RADIATOR) RIGHT SIDE OF RADIATOR) RUN/CRANK IGN 1 VOLT UNDERHOOD FUSE BLOCK VIO WIRE VIO/GRN WIRE VOLT WHT WIRE WHT/GRN WIRE

ABS PUMP FUSE B+ VOLT BLK WIRE BLU WIRE BLU/BLK WIRE BLU/VIO WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ELECTRONIC BRAKE CONTROL MODULE GRN/VIO WIRE GROUND GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/RED WIRE HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT PARK BRAKE ACTUATOR LOGIC LOW SPEED GMLAN SERIAL DATA LR PARK BRK MTR APPLY CTRL LR PARK BRK MTR LOW REF PARK BRAKE CONTROL SWITCH (NEXT TO SHIFT LEVER ASSEMBLY) PARK BRAKE IND PARK BRK APPLY SW SIG PARK BRK APPLY SW VOLT REF PARK BRK RELEASE SW PARK BRK RELEASE SW SIG PARK BRK SW SIG PARK BRK SW SPLY RED/YEL WIRE RIGHT PARK BRAKE ACTUATOR RR PARK BRK MTR APPLY CTRL RR PARK BRK MTR LOW REF SERVICE PARK BRAKE IND UNDERHOOD FUSE BLOCK W/ LINK 4 REAR AXLE W/ LINK 5 REAR AXLE WHT WIRE YEL WIRE YEL/BLU WIRE YEL/RED WIRE

BLK WIRE BLK/GRY WIRE BLU/VIO WIRE CLOSE COMPUTER DATA LINES SYSTEM EXPRESS CLOSE EXPRESS OPEN FRONT OVERHEAD CONSOLE ASSEMBLY GRN/BRN WIRE HOT AT ALL TIMES LOGIC LOW REF RED/GRY WIRE SERIAL DATA BUS 1 SUNROOF CONTROL MODULE SUNROOF FUSE SW DATA 1 SW SIG UNDERHOOD FUSE BLOCK WHT/GRN WIRE

BLK WIRE BLK/BLU WIRE BLK/GRY WIRE BLU WIRE BLU/GRY WIRE BLU/VIO WIRE BRN WIRE CLOSE COMPUTER DATA LINES SYSTEM DOWN EXPRESS CLOSE EXPRESS DOWN EXPRESS OPEN EXPRESS UP FRONT OVERHEAD CONSOLE ASSEMBLY GRN WIRE GRY WIRE HOT AT ALL TIMES LOGIC LOW REF LT BLU WIRE RED/GRY WIRE SERIAL DATA BUS 1 SUNROOF CONTROL MODULE SUNROOF FUSE SUNROOF SUNSHADE MOTOR MODULE SW DATA 1 SW SIG UNDERHOOD FUSE BLOCK VIO WIRE

BLK WIRE BLU/GRY WIRE BLU/VIO WIRE BODY CONTROL MODULE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DATA BUS 3 DOOR LOCK DOOR LOCKS SYSTEM DOWN DRIVER WINDOW MOTOR DRIVER WINDOW/ OUTSIDE REAR VIEW MIRROR SWITCH EXPRESS FUSE 1 FUSE 2 GRN WIRE GRN/BLK WIRE GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES ILL INSTRUMENT PANEL FUSE BLOCK LEFT FRONT WINDOW DOWN SWITCH LEFT FRONT WINDOW EXPRESS SWITCH LEFT FRONT WINDOW UP SWITCH LEFT REAR WINDOW DOWN SWITCH LEFT REAR WINDOW EXPRESS SWITCH LEFT REAR WINDOW MOTOR LEFT REAR WINDOW SWITCH LEFT REAR WINDOW UP SWITCH LF DR AJAR SW SIG LIN SER LIN SER DATA BUS 3 LIN SER DATA BUS 4 LOCKOUT IND LOCKOUT SWITCH LOGIC LOGIC ILL LR DOWN CTRL LR DR AJAR SW SIG LR UP CTRL MEMORY CONTROL MODULE FUSE MTR STATUS PASSENGER WINDOW MOTOR PASSENGER WINDOW SWITCH RED/BLU WIRE RED/WHT WIRE RF DR AJAR SW SIG RIGHT FRONT WINDOW DOWN SWITCH RIGHT FRONT WINDOW EXPRESS SWITCH RIGHT FRONT WINDOW UP SWITCH RIGHT REAR WINDOW DOWN SWITCH RIGHT REAR WINDOW EXPRESS SWITCH RIGHT REAR WINDOW MOTOR RIGHT REAR WINDOW SWITCH RIGHT REAR WINDOW UP SWITCH RR DOWN CTRL RR DR AJAR SW SIG RR UP CTRL SW DOWN SIG SW DRV DOWN SIG SW DRV EXP SIG SW DRV UP SIG SW EXPRESS SIG SW UP SIG UNDERHOOD FUSE BLOCK UNLOCK SIG VIO/GRY WIRE W/ MEMORY W/O MEMORY WHT/VIO WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE

2.0L TURBO 3.6L AUTOMATIC TRANSMISSION ASSEMBLY (8 SPEED A/T) AUTOMATIC TRANSMISSION ASSEMBLY (9-SPEED A/T) BATT POS VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BODY CONTROL MODULE (LOWER CENTER OF DASH) BPP SENS SIG BRAKE PEDAL POSITION SENSOR BRK APPLY SENS CTRL BRK POS SENS LOW REF COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE ENGINE CONTROLS SYSTEM FUSE 5 GRN/YEL WIRE GROUND HI SPD GMLAN SER DATA (+) 1 HOT AT ALL TIMES IGN MODE SW CTRL BACKUP IGN MODE SW MODE CTRL IMS MODE SW LOW REF ENG CTRL SENS LO REF INSTRUMENT PANEL FUSE BLOCK J132 (3.6L) KEY CAPTURE/COLUMN LOCK SHIFT POSITION SIGNAL LOCK SOL LOGIC LOW REF NCA WIRE PARK PARK POSITION SWITCH PARK/NEUTRAL SG 1 PARK/NEUTRAL SIG (1) PPL RED WIRE RED/YEL WIRE SHIFT LOCK SOL CTRL SIG GND TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION MANUAL SHIFT SWITCH TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LOCK CONTROL SOLENOID ACTUATOR VIO/BLK WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE WHT/VIO WIRE YEL/BLU WIRE

ABS PUMP FUSE AUTO BATT POS VOLT BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/VIO WIRE BODY CONTROL MODULE (LOWER CENTER OF DASH) BRK FLUID LEVEL SENS SIG PARK BRK RELEASE SW VOLT REF BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER DOOR LATCH ASSEMBLY DRIVER WINDOW MOTOR ELECTRONIC BRAKE CONTROL MODULE (LEFT REAR OF ENGINE COMPT) FUSE 22 GRN/BRN WIRE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/RED WIRE HDLP SW HDLPS OFF SIG CTRL HDLP SW ON SIG HEAD HEADLAMP SWITCH HI SPD GMLAN SER DATA (+) 1 HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR WINDOW SWITCH LF DR AJAR SW SIG LIN SERIAL DATA BUS 3 LIN SERIAL DATA BUS 4 LOGIC LR DR AJAR SW SIG OFF PARK PARK BRAKE CONTROL SWITCH (NEXT TO SHIFT LEVER ASSEMBLY) PARK BRK APPLY SW SIG PARK BRK APPLY SW VOLT REF PARK BRK RELEASE SW SIG PARK BRK SW SIG PARK BRK SW SUPPLY VOLT RED/WHT WIRE RED/YEL WIRE SIG GND UNDERHOOD FUSE BLOCK WHT WIRE YEL WIRE YEL/RED WIRE

BLK WIRE BLK/ORG WIRE BLU WIRE BLU/YEL WIRE BRAKE FLUID LEVEL SWITCH BRAKE IND COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY DRIVER SEAT BELT SWITCH DRIVER SEAT BELT BUCKLE DRV SEAT BELT SW LO REF DRV SEAT BELT SW SIG FRONT OVERHEAD CONSOLE ASSEMBLY GMLAN SERIAL DATA 2 GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/GRN WIRE GRY/VIO WIRE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INSTRUMENT CLUSTER LIN SERIAL DATA BUS 3 LIN SERIAL DATA BUS 4 LOGIC MOST SERIAL DATA (+) ORG/BRN WIRE ORG/VIO WIRE PASS SEAT BELT SW LO REF PASS SEAT BELT SW SIG PASSENGER DOOR LATCH ASSEMBLY PASSENGER SEAT BELT IND PASSENGER SEAT BELT SWITCH PASSENGER SEAT BELT BUCKLE PASSENGER WINDOW MOTOR RADIO RF DR AJAR SW SIG RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR WINDOW SWITCH RR DR AJAR SW SIG SEAT BELT IND SERVICE PARK BRAKE IND TIRE PRESSURE IND VIO WIRE VIO/WHT WIRE WHT WIRE WHT/GRN WIRE