Buick LaCrosse III (2016-2019) dk grn/dk blu Wiring diagrams

ACCESSORY WAKEUP SERIAL DATA B+ VOLT BLK WIRE BLK/BRN WIRE BLK/WHT WIRE BLK/YEL WIRE BODY CONTROL MODULE (UNDER FLOOR CONSOLE) BRAKE PEDAL POSITION SENSOR (TOP OF BRAKE PEDAL ASSEMBLY) BRK APPLY SENS CTRL BRK APPLY SENS SIG BRK POS SENS 5 VOLT REF BRK POS SENS LO REF BRK POS SENS SIG COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/YEL WIRE DK GRN/DK BLU WIRE DK GRN/VIO WIRE ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) FUSE 20 FUSE 5 FUSED SUPPLY 4 GROUND HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) 1 PARK/NEUTRAL SIG HIGH SPD SER DATA (+) (1) HIGH SPD SER DATA (+) 1 BRK APPLY SENS LOW REF HIGH SPD SER DATA (+) 2 HIGH SPD SER DATA (+) 2 BATT POS VOLT HOT AT ALL TIMES HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT PANEL FUSE BLOCK LEFT TRANSMISSION MANUAL SHIFT SWITCH LIN DATA BUS 26 LOGIC MIL SS FUSE PWR/TRN ON ENG FUSE RED/BRN WIRE RED/WHT WIRE RED/YEL WIRE REMOTE PRNDL ENABLE RIGHT TRANSMISSION MANUAL SHIFT SWITCH RUN/CRANK IGN 1 SIG GND STEERING WHEEL AIR BAG COIL SYSTEM TAP UP/TAP DOWN SW SIG TRANSMISSION RANGE CONTROL MODULE (TOP OF TRANSMISSION) TRCM FUSE UNDERHOOD FUSE BLOCK VIO/BLK WIRE VIO/DK BLU WIRE VIO/YEL WIRE WAKEUP SER DATA WHT WIRE WHT/GRY WIRE WHT/LT GRN WIRE WHT/RED WIRE

BATT POS VOLT BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/DK GRN WIRE BLK/GRY WIRE BLK/VIO WIRE CHASSIS CONTROL MODULE (FRONT OF FLOOR CONSOLE) COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/RED WIRE DK BLU/YEL WIRE DK GRN/DK BLU WIRE DK GRN/RED WIRE DK GRN/VIO WIRE DRIVER INFORMATION CENTER DISPLAY FUSE 35 GROUND GRY/LT GRN WIRE HIGH SPD SER DATA (+) (1) HIGH SPD SER DATA (+) 2 HIGH SPD SER DATA (-) 1 LIN DATA BUS 26 HOT AT ALL TIMES IGN 1 VOLT INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LIN DATA BUS 26 LOGIC LOW SPD GMLAN SERIAL DATA 2 NCA WIRE RED/BLU WIRE REMOTE PRNDM ENABLE SENS 1 BETA SIGNAL SENS 2 ALPHA SIGNAL SENS 2 BETA SIGNAL SENS 2 LOW REF SENS 2 VOLT REF SHIFTER POSITION SW 1 RETURN SW 1 SIGNAL SW 2 RETURN SW 2 SIGNAL TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LEVER KNOB TRANSMISSION SHIFT LEVER POSITION INDICATOR VIO/BLK WIRE VIO/BRN WIRE VIO/DK BLU WIRE VIO/DK GRN WIRE VIO/YEL WIRE VOLT REF WAKEUP SER DATA 2 WHT WIRE WHT/DK GRN WIRE WHT/GRY WIRE YEL/BRN WIRE YEL/DK BLU WIRE

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

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

1-VT 2-VT BATT POS VOLT BLK WIRE BLK/YEL WIRE BRN WIRE CELLULAR PHONE NAVIGATION, DIGITAL RADIO ANTENNA COAX COMPUTER DATA LINES SYSTEM DISPLAY DISPLAY SIG + DK GRN/BLK WIRE DK GRN/DK BLU WIRE DK GRN/WHT WIRE FUSE 31 GRY/GRN WIRE HOT AT ALL TIMES INFO DISPLAY MODULE INFOTAINMENT INSTRUMENT PANEL FUSE BLOCK LOGIC LOW SPEED GMLAN LVDS MEDIA DISC PLAYER MENU MUTE NEXT RADIO CONTROLS RED WIRE RED/LT BLU WIRE RED/VIO WIRE RED/WHT WIRE RIGHT STEERING WHEEL CONTROLS SWITCH SEEK DOWN SEEK UP SELECT SERIAL DATA 2 SERIAL DATA BUS 10 SERIAL DATA BUS 5 STEERING WHEEL AIR BAG COIL TALK USB VOL (-) W/ ONSTAR W/O ONSTAR W/ NAVIGATION W/O NAVIGATION WHT WIRE YEL WIRE

AM/FM 1 AUXILIARY AUDIO INPUT BK USB BLK WIRE BLK/YEL WIRE BRN WIRE COAX COAX BU GPS COAX GY GPS COAX COAX GY GPS/CELL COAX PK GPS COAX VT GPS/CELL COMPUTER DATA LINES SYSTEM CU HD/XM DK GRN/DK BLU WIRE FM/RFR GRY/LT GRN WIRE GRY/VIO WIRE LEFT STEERING WHEEL CONTROLS SWITCH LOCAL SERIAL DATA BUS 10 LOGIC LOW REF LOW SPEED GMLAN SERIAL DATA 2 MEDIA DISC PLAYER MOST CONTROL MOST SERIAL DATA (+) NAVIGATION ANTENNA SIGNAL SPLITTER (W/ CELL) (CENTER OF REAR WINDOW SHELF) NAVIGATION ANTENNA SIGNAL SPLITTER (W/O CELL) (CENTER OF REAR WINDOW SHELF) RADIO RADIO ANTENNA REAR ROOF ANTENNA RED/VIO WIRE RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER RFR TELEPHONE VOICE SIG USB USB USB W/ ONSTAR W/O ONSTAR W/ NAVIGATION W/O NAVIGATION WHT WIRE WHT/LT GRN WIRE WHT/VIO WIRE YEL WIRE

BATT POS VOLT BLK WIRE BLU/GRY WIRE BRN/DK BLU WIRE CENTER INSTRUMENT PANEL SPEAKER COMPUTER DATA LINES SYSTEM DISPLAY DISPLAY SIG + DK BLU WIRE DK BLU/YEL WIRE DK GRN WIRE DK GRN/BLK WIRE DK GRN/DK BLU WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE FUSE 16 FUSE 38 GRN/BLK WIRE GRY/GRN WIRE HOT AT ALL TIMES INFO DISPLAY MODULE INFOTAINMENT INSTRUMENT PANEL FUSE BLOCK LEFT FRONT DOOR SPEAKER LEFT FRONT TWEETER SPEAKER LEFT REAR DOOR SPEAKER LEFT SUBWOOFER SPEAKER LOGIC LOW SPEED GMLAN LVDS MEDIA DISC PLAYER RADIO CONTROLS RED/BRN WIRE RED/LT BLU WIRE RED/VIO WIRE RED/YEL WIRE REPLICATED SERIAL DATA 2 SERIAL DATA BUS 10 SERIAL DATA BUS 5 SIG VIO/DK BLU WIRE YEL/WHT WIRE