Buick LaCrosse III (2016-2019) Computer data lines circuit

ACC WAKEUP SERIAL DATA AMBIENT LIGHT/ SUNLOAD SENSOR BATT POS VOLT BATTERY POSITIVE VOLTAGE BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BODY CONTROL MODULE (UNDER FLOOR CONSOLE) DATA BUS 1 DATA BUS 11 DATA BUS 15 DATA BUS 4 DATA LINK CONNECTOR (LOWER LEFT SIDE OF DASH) DK BLU WIRE DK BLU/VIO WIRE DK BLU/YEL WIRE DK GRN WIRE DK GRN/BRN WIRE DK GRN/DK BLU WIRE DK GRN/GRY WIRE DK GRN/VIO WIRE DK GRN/WHT WIRE DK GRN/YEL WIRE FUSE 20 FUSE 25 FUSE 34 FUSE 5 GROUND GRY/LT GRN WIRE HI SPD GMLAN SERIAL DATA (+) 8 HI SPD GMLAN SERIAL DATA (+) 9 HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (2) HI SPD GMLAN SERIAL DATA (-) 9 LOW SPD GMLAN SERIAL DATA HOT AT ALL TIMES IMMOBILIZER CONTROL MODULE INSTRUMENT PANEL FUSE BLOCK LEFT REAR WINDOW SWITCH LIN SERIAL LIN SERIAL DATA BUS 1 LIN SERIAL DATA BUS 11 LIN SERIAL DATA BUS 15 LIN SERIAL DATA BUS 2 LIN SERIAL DATA BUS 3 LIN SERIAL DATA BUS 4 LOGIC SUNROOF MOTOR LOGIC WINDSHIELD WIPER MOTOR LOW SPD GMLAN SERIAL DATA LOW SPD GMLAN SERIAL DATA 2 LT GRN WIRE RED/BRN WIRE RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE RIGHT REAR WINDOW SWITCH SERIAL DATA COMM ENABLE SERIAL DATA GATEWAY MODULE (NEAR BODY CONTROL MODULE) VIO WIRE VIO/YEL WIRE WHT WIRE WHT/DK BLU WIRE WHT/GRN WIRE WHT/GRY WIRE

AUXILIARY HVAC CONTROL MODULE LOGIC BLU/GRN WIRE BLU/GRY WIRE COMM ENABLE DATA DATA BUS 2 DATA BUS 5 DK BLU WIRE DK BLU/VIO WIRE DK BLU/YEL WIRE DK GRN/DK BLU WIRE DK GRN/WHT WIRE DK GRN/YEL WIRE FRONT SEAT HEATING CONTROL MODULE GRN/BLU WIRE GRY/GRN WIRE GRY/LT GRN WIRE GRY/VIO WIRE HI SPD GMLAN HI SPD GMLAN SERIAL DATA (-) (2) HUMAN MACHINE INTERFACE CONTROL MODULE (RIGHT SIDE OF DASH) HVAC CONTROL MODULE HVAC CONTROLS LOGIC INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE LIN SERIAL LIN SERIAL DATA BUS 9 LOW SPD GMLAN LOW SPD GMLAN SERIAL DATA LT GRN WIRE MOST CONTROL MOST SERIAL REAR SEAT HEATING CONTROL MODULE SERIAL DATA SERIAL DATA (-) 9 SERIAL DATA 2 SERIAL DATA COMM ENABLE VIO/YEL WIRE W/ AMPLIFIER W/ RADIO INFOTAINMENT SYSTEM W/O RADIO INFOTAINMENT SYSTEM W/O AMPLIFIER WHT WIRE WHT/DK BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/VIO WIRE

BLU/GRN WIRE BLU/GRY WIRE DATA DATA BUS 10 DATA BUS 12 DATA BUS 2 DATA BUS 5 DK BLU WIRE DK BLU/VIO WIRE DK BLU/YEL WIRE DK GRN/BLK WIRE DK GRN/DK BLU WIRE DK GRN/WHT WIRE DK GRN/YEL WIRE GRY/LT GRN WIRE GRY/VIO WIRE HEAD-UP DISPLAY HI SPD GMLAN SERIAL DATA (+) 9 INFO DISPLAY MODULE INFOTAINMENT CONTROL TOUCHPAD INSTRUMENT CLUSTER LOGIC LIN SERIAL LO SPD GMLAN LOGIC LOW SPD GMLAN LOW SPD GMLAN SERIAL DATA 2 LT GRN WIRE MEDIA DISC PLAYER MOST CONTROL MOST SERIAL RADIO RIGHT STEERING WHEEL CONTROLS SWITCH LOGIC SERIAL DATA 2 SERIAL DATA COMM ENABLE STEERING WHEEL AIR BAG COIL TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE VIO/YEL WIRE W/ INFOTAINMENT CONTROL TOUCHPAD W/ INFOTAINMENT CONTROL TOUCHPAD W/ ONSTAR W/O ONSTAR WHT WIRE WHT/DK BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/VIO WIRE

6 W/O REAR VIEW VISION BLU/GRY WIRE DK BLU WIRE DK BLU/VIO (OR BLU/GRY) WIRE DK BLU/VIO WIRE DK BLU/YEL WIRE DK GRN/WHT WIRE DK GRN/YEL WIRE DRIVER WINDOW MOTOR DRIVER WINDOW/ OUTSIDE REAR VIEW MIRROR SWITCH FRONT OBJECT SENS CTRL 2 FRONT VIEW CAMERA GRN/VIO WIRE GRN/WHT WIRE GRY/VIO WIRE HEADLAMP CONTROL MODULE (LOWER LEFT SIDE OF DASH) HI SPD GMLAN SERIAL DATA (+) 8 KEYLESS ENTRY CONTROL MODULE LEFT SIDE OBJECT SENSOR MODULE LIN BUS 8 LIN SERIAL DATA BUS 3 LIN SERIAL DATA BUS 6 LIN SERIAL DATA BUS 8 LO SPD GMLAN LO SPD GMLAN SERIAL DATA LOGIC LEFT HEADLAMP HORIZONTAL MOTOR LEFT HEADLAMP ASSEMBLY LOGIC RIGHT HEADLAMP HORIZONTAL MOTOR RIGHT HEADLAMP ASSEMBLY LT GRN WIRE PASSENGER PRESENCE MODULE PASSENGER WINDOW MOTOR PASSENGER WINDOW SWITCH SEAT MEMORY CONTROL MODULE SERIAL DATA SERIAL DATA COMM ENABLE STEERING COLUMN POSITION CONTROL MODULE VIO/YEL WIRE W/ DIRECTIONAL HEADLAMPS BEAM CONTROL W/ EXPRESS UP/DOWN W/ MEMORY W/ OBSTACLE DETECTION ENHANCED SIDE ACTIVE SAFETY W/ REAR VIEW VISION W/O BRAKE PREFILL INTEGRATED BRAKE ASSIST W/O DIRECTIONAL HEADLAMPS BEAM CONTROL W/ BRAKE PREFILL INTEGRATED BRAKE ASSIST WHT WIRE WHT/DK BLU WIRE WHT/GRY WIRE

ACC WAKEUP SERIAL DATA BLU/GRY WIRE CHASSIS CONTROL MODULE (FRONT OF FLOOR CONSOLE) DK BLU WIRE DK BLU/BLK WIRE DK BLU/VIO WIRE DK BLU/YEL WIRE DK GRN/DK BLU WIRE ELECTRONIC BRAKE CONTROL MODULE FRONT OBJECT FRONT OBJECT SENS CTRL 2 FUEL PUMP DRIVER CONTROL MODULE GRY/VIO WIRE HI SPD GMLAN HI SPD GMLAN SERIAL DATA (+) (3) HI SPD GMLAN SERIAL DATA (+) 4 HI SPD GMLAN SERIAL DATA (+) 8 HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (2) HIGH SPEED BUS TERMINATING RESISTOR LIN SERIAL DATA BUS 26 LO SPD GMLAN SERIAL DATA LONG RANGE RADAR SENSOR MODULE LT GRN WIRE POWER STEERING CONTROL MODULE SENS CTRL 2 SERIAL DATA (-) 4 SERIAL DATA COMM ENABLE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VIO/YEL WIRE W/ PARKING ASSIST W/O PARKING ASSIST W/ BRAKE PREFILL INTEGRATED BRAKE ASSIST W/O BRAKE PREFILL INTEGRATED BRAKE ASSIST WHT WIRE WHT/DK BLU WIRE WHT/GRY WIRE

ACC WAKEUP SERIAL DATA ACCESSORY WAKEUP DATA BUS 21 DATA BUS 26 DK BLU WIRE DK BLU/BLK WIRE DK BLU/YEL WIRE DK GRN WIRE DK GRN/DK BLU WIRE ENGINE CONTROL MODULE HI SPD GMLAN HI SPD GMLAN SERIAL DATA (+) (3) HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (2) LIN SERIAL LIN SERIAL DATA BUS 21 LIN SERIAL DATA BUS 26 LOGIC LOGIC ACTIVE GRILLE AIR SHUTTER MOTOR MODULE 1 LOGIC ACTIVE GRILLE AIR SHUTTER MOTOR MODULE 2 LOGIC TRANSMISSION CONTROL MODULE AUTOMATIC TRANSMISSION ASSEMBLY LT GRN/VIO WIRE NCA WIRE SERIAL DATA SERIAL DATA (-) (1) SERIAL DATA COMM ENABLE SUSPENSION CONTROL MODULE TRANSMISSION RANGE CONTROL MODULE (TOP OF TRANSMISSION) TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LEVER KNOB TRANSMISSION SHIFT LEVER POSITION INDICATOR LOGIC UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VIO/YEL WIRE WHT WIRE WHT/DK BLU WIRE