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

9 SPEED A/T 8 SPEED A/T BATT POS VOLT BLK/ORG WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/YEL WIRE BODY CONTROL MODULE (LOWER CENTER OF DASH) BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM FUSE 24 GRN/RED WIRE HI SPD GMLAN SER DATA (+) 1 HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (2) HOT AT ALL TIMES INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INSTRUMENT PANEL FUSE BLOCK LEFT HOOD ACTUATOR HI CTRL LEFT HOOD ACTUATOR LOW CTRL LEFT HOOD HINGE ACTUATOR ORG/VIO WIRE PEDESTRIAN PROTECTION IMPACT SENSING MODULE LOW REF PEDESTRIAN PROTECTION IMPACT SENSING MODULE SIG PEDESTRIAN PROTECTION SAFING SENSOR MODULE LOW REF PEDESTRIAN PROTECTION SAFING SENSOR MODULE SIG POWER DISTRIBUTION SYSTEM RED/BRN WIRE RIGHT HOOD ACTUATOR HI CTRL RIGHT HOOD ACTUATOR LOW CTRL RIGHT HOOD HINGE ACTUATOR SHORTING BAR SIG GND TRANSMISSION CONTROL MODULE UPPER BEAM FRONT PEDESTRIAN IMPACT DETECTION SENSOR VIO/RED WIRE WHT WIRE WHT/RED WIRE

1-BN 1-YE BACKUP LAMP DTRL BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN/BLU WIRE BRN/VIO WIRE BRN/WHT WIRE CELLULAR PHONE MICROPHONE CENTER INSTRUMENT PANEL SPEAKER COAX COMPUTER DATA LINES SYSTEM GMLAN SERIAL DATA (+) 9 GMLAN SERIAL DATA 2 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/YEL WIRE HATCHBACK LEFT FRONT DOOR SPEAKER LEFT FRONT TWEETER SPEAKER LEFT REAR DOOR SPEAKER LF LOW LEVEL AUDIO REF LF LOW LEVEL AUDIO SIG LR LOW LEVEL AUDIO SIG + NCA WIRE RADIO RED/BLU WIRE RED/BRN WIRE RED/VIO WIRE REF RF LOW LEVEL AUDIO REF RF LOW LEVEL AUDIO SIG RR LOW LEVEL AUDIO REF RR LOW LEVEL AUDIO SIG + SERIAL DATA BUS 10 SERIAL DATA BUS 5 SERIAL DATA COMM ENABLE SIG SUBWOOFER SPEAKER (W/ ENHANCED AUDIO SPEAKER SYSTEM) VIO WIRE VIO/YEL WIRE WAGON WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE

1-BN 1-YE BACKUP LAMP DTRL BLK/GRY WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN/BLU WIRE BRN/YEL WIRE CELLULAR PHONE MICROPHONE CENTER INSTRUMENT PANEL SPEAKER COAX COMPUTER DATA LINES SYSTEM GMLAN SERIAL DATA (+) 9 GMLAN SERIAL DATA 2 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/WHT WIRE GRY WIRE GRY/GRN WIRE GRY/YEL WIRE HATCHBACK LEFT FRONT DOOR SPEAKER LEFT FRONT TWEETER SPEAKER LEFT REAR DOOR SPEAKER LF SPEAKER (-) CTRL 1 LF SPEAKER SIG (-) 1 LR SPEAKER (+) CTRL NCA WIRE PASSENGER DOOR HARNESS) RADIO RED/BLU WIRE RED/VIO WIRE REF RF SPEAKER (-) CTRL 1 RF SPEAKER SIG (-) 1 RIGHT FRONT DOOR SPEAKER RIGHT FRONT TWEETER SPEAKER RIGHT REAR DOOR SPEAKER RR SPEAKER (+) CTRL RR SPEAKER SIG (-) SERIAL DATA BUS 10 SERIAL DATA BUS 5 SERIAL DATA COMM ENABLE SIG VIO WIRE VIO/YEL WIRE WAGON WHT WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE

2.0L TURBO 3.6L BAT POS VOLT BATT POSITIVE VOLT BATTERY FUSE BLOCK BK COAX BLK WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BRN WIRE BRN/BLU WIRE CELLULAR VOICE LO REF CELLULAR VOICE SIG COAX COMPUTER DATA LINES SYSTEM COOLING FAN/ DC DC CONVERTER 2 FUSE CTRL CU COAX XM DIMMING DOWN FUSE 10 FUSE 31 FUSE 35 FUSE 39 FUSE 42 FUSE 5 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GROUND GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BRN WIRE GRY/GRN WIRE HOT AT ALL TIMES HOT W/ BATTERY SAVER RELAY 1 ENERGIZED INDICATOR INFOTAINMENT REGULATED CTRL INSTRUMENT PANEL FUSE BLOCK LADDER SIG 1 LEFT AUXILIARY AUDIO SIG 2 LEFT STEERING WHEEL CONTROLS SWITCH LEFT UP LF SPEAKER (-) CTRL 1 LF SPEAKER SIG (-) 1 LOGIC RIGHT STEERING WHEEL CONTROLS SWITCH LR SPEAKER (+) CTRL LR SPEAKER SIG (-) MUTE NCA WIRE POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER (REAR OF CENTER FLOOR CONSOLE) RADIO RED/BLU WIRE RED/GRN WIRE RED/VIO WIRE RESISTOR RF SPEAKER (-) CTRL 1 RF SPEAKER SIG (-) 1 RIGHT RIGHT AUXILIARY AUDIO SIG 2 RR SPEAKER (+) CTRL RR SPEAKER SIG (-) SEATS SYSTEM SEEK SEEK UP DOWN SEL SERIAL DATA BUS 10 LOW SPD GMLAN SERIAL DATA 2 STEERING WHEEL AIR BAG COIL STEERING WHEEL) UNDERHOOD FUSE BLOCK VIO WIRE VOL (-) W/ HEAD UP DISPLAY W/O HEAD-UP DISPLAY WH COAX WHT WIRE YEL WIRE YEL/BLK WIRE

1-BK 1-YE 2-BK AM/FM AM/FM/DAB BATT POS VOLT BLK WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BODY CONTROL MODULE (LOWER CENTER OF DASH) BRN WIRE BRN/BLU WIRE COAX COMPUTER DATA LINES SYSTEM FUSE 20 GRN WIRE GRN/BLK WIRE GRN/GRY WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BRN WIRE HATCHBACK HATCHBACK/ WAGON HI SPD GMLAN HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK LEFT QUARTER WINDOW ANTENNA LEFT RADIO ANTENNA AMPLIFIER MUTE REAR END SPOILER ANTENNA REAR WINDOW ANTENNA RED/BLU WIRE RED/BRN WIRE RED/VIO WIRE RESISTOR SIG 1 RIGHT RADIO ANTENNA AMPLIFIER RIGHT STEERING WHEEL CONTROLS SWITCH (ONE COLOR GRAPHIC) SEEK DOWN SEEK UP SERIAL DATA (-) (1) SOURCE STEERING WHEEL AIR BAG COIL STEERING WHEEL) VIO WIRE VOICE VOLUME DOWN VOLUME UP WAGON WHT WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE

2.0L TURBO 3.6L AUXILIARY AUDIO COMMON SIG AUXILIARY AUDIO SCREEN 2 AUXILIARY DETECTION SIG BAT POS VOLT BATT POSITIVE VOLT BATTERY FUSE BLOCK BK COAX BLK WIRE BLK/YEL WIRE BLU WIRE BRN WIRE CELLULAR TELEPHONE LO REF CELLULAR TELEPHONE SIG COAX COMPUTER DATA LINES SYSTEM COOLING FAN/ DC DC CONVERTER 2 FUSE CTRL CU COAX XM DIMMING DOWN FUSE 10 FUSE 16 FUSE 20 FUSE 31 FUSE 35 FUSE 39 FUSE 42 FUSE 5 GRN WIRE GRN/BLU WIRE GROUND GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BRN WIRE GRY/GRN WIRE HOT AT ALL TIMES HOT W/ BATTERY SAVER RELAY 1 ENERGIZED INDICATOR INFOTAINMENT REGULATED CTRL INSTRUMENT PANEL FUSE BLOCK LADDER SIG 1 LEFT AUXILIARY AUDIO SIG 2 LEFT STEERING WHEEL CONTROLS SWITCH LEFT UP LOGIC RIGHT STEERING WHEEL CONTROLS SWITCH MUTE NCA WIRE POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER (REAR OF CENTER FLOOR CONSOLE) RADIO RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/VIO WIRE RESISTOR RIGHT RIGHT AUXILIARY AUDIO SIG 2 SEATS SYSTEM SEEK DOWN SEL SERIAL DATA BUS 10 LOW SPD GMLAN SERIAL DATA 2 STEERING WHEEL AIR BAG COIL STEERING WHEEL) UNDERHOOD FUSE BLOCK VIO WIRE VOL (-) VOL SEEK UP VOLT 2 W/ HEAD UP DISPLAY W/O HEAD-UP DISPLAY WH COAX WHT/BLK WIRE YEL WIRE

AUDIO AMPLIFIER BATT POS VOLT BLK WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRY WIRE BLU/YEL WIRE BRN/BLU WIRE BRN/YEL WIRE COAX COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE FC SPEAKER CTRL (+) GMLAN SERIAL DATA 2 GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/VIO WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/VIO WIRE HATCHBACK LEFT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE LEFT REAR RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE LF SPEAKER (-) CTRL 1 LF SPEAKER SIG (-) 1 LR SPEAKER (+) CTRL LR SPEAKER SIG (-) MICROPHONE 1 LOW REF MICROPHONE 1 SIG MICROPHONE 2 LOW REF MICROPHONE 2 SIG MICROPHONE 3 LOW REF MICROPHONE 3 SIG MICROPHONE 4 RTN MICROPHONE 4 SIG MOST CONTROL MOST SERIAL DATA (+) NCA WIRE PASSENGER DOOR HARNESS) REAR RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RED/BLU WIRE RED/BRN WIRE RED/VIO WIRE REPLICATED SIG RF SPEAKER (-) CTRL 1 RF SPEAKER SIG (-) 1 RIGHT FRONT DOOR SPEAKER RIGHT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RIGHT FRONT TWEETER SPEAKER RIGHT REAR DOOR SPEAKER RIGHT REAR RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RR SPEAKER (+) CTRL RR SPEAKER SIG (-) SPEAKER (-) LOW REF SPEAKER CTRL (+) VIO WIRE VIO/BLU WIRE W/ NAVIGATION WAGON WHT WIRE WHT/GRN WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

"CHECK ENGINE" IND CTRL 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 AIR CONDITIONING SYSTEM AMBIENT AIR TEMPERATURE SENSOR ANTI-LOCK BRAKES SYSTEM APP LOW REF 1 APP LOW REF 2 APP SIG (1) APP SIG (2) ATT SENS SIG BATT POS VOLT BATTERY FUSE BLOCK BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRY WIRE BRAKE PEDAL POSITION SENSOR BRK POS SENS LOW REF BRK POS SENS SIG BRK VACUUM SENS SIG BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COOLING FAN CTRL SIG COOLING FANS SYSTEM CRUISE CONTROL SYSTEM CRUISE/ETC/TCC BRAKE SIG DOOR LOCKS, ANTI-THEFT SYSTEMS ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) EVAPORATIVE EMISSION VENT SOLENOID VALVE FUEL PUMP PRIMARY RLY CTRL FUSE 2 GRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRY WIRE GRY/RED WIRE HI SPD GMLAN SER DATA (+) 1 HI SPD GMLAN SER DATA (+) 3 HI SPD GMLAN SER DATA (-) 7 HOOD OPEN SW SIG HOT AT ALL TIMES HTR RLY CTRL IGN MODE SW MODE CTRL BACKUP HUMIDITY SENS SIG IMS MODE SW LOW REF INDUCTION AIR TEMP SENS SIG MAIN RLY FUSED SPLY 3 MASS AIR FLOW SENS SIG POWERTRAIN MAIN RLY FUSED SPLY 1 POWERTRAIN MAIN RLY FUSED SPLY 2 POWERTRAIN RELAY COIL CTRL RED/BRN WIRE RED/WHT WIRE RED/YEL WIRE RUN/CRANK IGNITION 1 VOLT SENS HI REF BANK 1 STARTER ENABLE RLY CTRL STARTER PINION SOL RLY CTRL STARTING/CHARGING SYSTEM TRANSMISSION CONTROL MODULE/ ENGINE CONTROL MODULE FUSE TRANSMISSION PARK/NEUTRAL SIG 1 TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK VIO/BLU WIRE VIO/GRN WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/VIO WIRE YEL/WHT WIRE

A/C COMPRESSOR CLUTCH RELAY AEROSHUTTER FUSE AUXILIARY HEATER COOLANT PUMP RELAY BATT POS VOLT BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLU/BRN WIRE BLU/VIO WIRE BLU/WHT WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE CANISTER VENT/VIDEO PROCESSING MODULE FUSE COIL FUSE COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE FUSE ENGINE CONTROL MODULE/ IGNITION FUSE ENGINE CONTROLS IGNITION RELAY EVAP CTRL FUEL MODULE FUSE FUEL PRESSURE SENSOR FUEL PUMP FUEL PUMP CTRL FUEL PUMP DRIVER CONTROL MODULE (UNDER VEHICLE, NEAR FUEL TANK) FUEL PUMP, LEVEL SENSOR ASSEMBLY (TOP OF FUEL TANK) GRN WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/WHT WIRE GRY WIRE GRY/RED WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IGNITION COILS FUSE LOW REF LOW REF 2 MALFUNCTION INDICATOR LAMP/SHIFT SOLENOID FUSE NCA WIRE POWERTRAIN OFF ENGINE FUSE PRIMARY FUEL LEVEL SENSOR RED/BRN WIRE RED/VIO WIRE RED/YEL WIRE RELAY CONTROL SECONDARY FUEL LEVEL SENSOR SENSOR SIGNAL SERIAL DATA SERIAL DATA (-) 7 SHIELD GND SHUNT FUSE UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/YEL WIRE W/ 5-LINK REAR AXLE WHT WIRE WHT/BLU WIRE YEL WIRE YEL/RED WIRE

ACTUATOR LOW CTRL AIR PRESS SIG ANTI-LOCK BRAKES SYSTEM BANK 1 SENS 1 BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/VIO WIRE BLU/WHT WIRE BRAKE BOOSTER VACUUM SENSOR BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE CHARGE IND CTRL COMPUTER DATA LINES SYSTEM CTRL CURRENT ADJUST SIG CURRENT PUMP SIG DATA DRIVER INFORMATION CENTER DISPLAY DUTY CYCLE SIG ENGINE CONTROL MODULE ENGINE COOLANT TEMPERATURE GAUGE EVAPORATIVE EMISSION PURGE SOLENOID VALVE FUEL GAUGE FUEL PRESSURE, TEMPERATURE SENSOR GMLAN GRN 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 INSTRUMENT CLUSTER LO SPD LOGIC LOW CTRL LOW REF MALFUNCTION IND MAP SENS SIG OIL LEVEL SW SIG PRESSURE SENS SIG REF RELAY CONTROL RLY FUSED SPLY 5 SENS COLLECTOR SIG SENS LOW SENS LOW REF SENS LOW REF (2) SENS SIG SER DATA BUS 21 SERIAL SOL CTRL STARTING/ CHARGING SYSTEM TEMP SIG VIO/BLK WIRE VIO/BLU WIRE WHT/BLU WIRE YEL WIRE YEL/GRY WIRE YEL/RED WIRE