Buick LaCrosse III (2016-2019) vio/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

ACCESSORY WAKEUP SERIAL DATA BACKUP LAMP CTRL BATTERY BATTERY CURRENT SENSOR BATTERY FUSE BLOCK BATTERY POSITIVE VOLTAGE BLK WIRE BLK/VIO WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/WHT WIRE BODY CONTROL MODULE (UNDER FLOOR CONSOLE) BRN WIRE BRN/DK GRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COURTESY LAMP SW SIG CRUISE CONTROL SYSTEM CURRENT SENS CTRL CURRENT SENS LOW REF CURRENT SENS SIG DK BLU WIRE DK BLU/VIO WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/BRN WIRE DK GRN/VIO WIRE DK GRN/YEL WIRE DOME LAMP OFF INDICATOR CTRL DOOR LOCKS, ANTI-THEFT SYSTEMS DR LCK ACTUATOR UNLOCK CTRL DR LOCK ACTUATOR LOCK CTRL DR LOCK ACTUATOR LOCK CTRL 2 DRV DR LOCK SW LOCK SIG DRV DR LOCK SW UNLOCK SIG DRV OUTSIDE REAR VIEW MIRR PUDDLE LAMP CTRL FOG LAMP RLY CTRL LIFT GLASS/REAR COMPT LID FUSE 4 GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GROUND GRY WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/VIO WIRE GRY/YEL WIRE HDLP HIGH BEAM RLY CTRL HEADLAMP LOW BEAM RLY CTRL HEADLIGHTS SYSTEM HI SPD GMLAN SERIAL DATA (-) (1) HI SPEED GMLAN DATA BUS (-) HOOD STATUS B SIG HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES INADVERTENT POWER CTRL INTERIOR LAMP CTRL INTERIOR LAMP DEFEAT SW SIG PPL LOGISTIC MODE RLY OPEN CTRL LED AMBIENT LIGHTING CTRL 1 LED BACKLIGHT DIMMING CTR LEFT CORNERING LAMP RLY CTRL LEFT PARK LAMP CTRL LEFT REAR DR LOCK MTR STATUS LEFT REAR STOP LAMP CTRL LF TURN SIG LAMP CTRL LIFT GLASS/REAR COMPT LID INTERIOR RELEASE SIG LIFTGATE AJAR SWITCH SIG 1 LINEAR INTERCONNECT NETWORK BUS 2 LINEAR INTERCONNECT NETWORK BUS 3 LOGISTIC MODE RLY CLOSE CTRL LR STOP/TURN SIG LAMP CTRL MTR RELEASE CTRL CRUISE/ETC/TCC BRAKE SIGNAL PASS DR LOCK SW LOCK CTRL PASS DR LOCK SW UNLOCK CTRL POWER DISTRIBUTION SYSTEM PUSH BUTTON START CHALLENGE ACTIVE REAR COMPT LID LAMP CTRL REAR LICENSE LAMP CTRL RED/GRY WIRE RED/WHT WIRE REMOTE PRNDL ENABLE RIGHT CORNERING LAMP RLY CTRL RIGHT FRT DRL CTRL RIGHT FRT TURN SIG LAMP CTRL RIGHT PARK LAMP CTRL RIGHT REAR DR LOCK MTR STATUS RIGHT REAR STOP LAMP CTRL RIGHT REAR STOP/TURN LAMP CTRL RR CLOSURE HANDLE SW OPEN SIG LINEAR INTERCONNECT NETWORK DATA BUS 1 RUN/CRANK RELAY COIL CTRL SERIAL DATA COMM ENABLE STARTING/CHARGING SYSTEM STOP LAMP RELAY COIL CTRL TRANSMISSIONS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM DOOR LOCKS, ANTI-THEFT SYSTEMS VIO WIRE VIO/DK BLU WIRE VIO/GRY WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/DK BLU WIRE WHT/YEL WIRE WINDSHIELD WASHER RELAY CTRL WINDSHIELD WIPER MTR RLY COIL WIPER/WASHER SYSTEM YEL WIRE YEL/BLU WIRE YEL/DK BLU WIRE

BATT POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/YEL WIRE BLU WIRE BRN/BLK WIRE BRN/YEL WIRE COMMON CTRL COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DK BLU/DK GRN WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE DOWN DRIVER OUTSIDE REAR VIEW MIRROR COURTESY LAMP DRIVER OUTSIDE REAR VIEW MIRROR GLASS DRIVER OUTSIDE REAR VIEW MIRROR MOTOR DRIVER OUTSIDE REAR- VIEW MIRROR DRIVER SEAT MEMORY SWITCH DRIVER SIDE OBJECT DETECTION INDICATOR DRIVER WINDOW/OUTSIDE REAR VIEW MIRROR SWITCH EXIT GRY/BRN WIRE GRY/GRN WIRE HOT AT ALL TIMES ILL LEFT LEFT TURN SIGNAL REPEATER LAMP LH (-) RH (+) SIG LIN DATA BUS 8 LOGIC LOW REF MIRROR DIMMING MIRRORS SYSTEM NAVIGATION SYSTEM RED/BLU WIRE RED/DK BLU WIRE RH (+) LH (-) CTRL RIGHT RWD SET- UNDERHOOD FUSE BLOCK UP (+) DOWN (-) CTRL UP DOWN SIG VIO/DK BLU WIRE VIO/RED WIRE WHT WIRE WHT/YEL WIRE WNDW MIR SEAT FUSE YEL WIRE YEL/BRN WIRE YEL/WHT WIRE

BATT POS VOLT BLK WIRE BLU WIRE BLU/BLK WIRE BLU/GRY WIRE BRN/BLU WIRE BRN/DK BLU WIRE COMPUTER DATA LINES SYSTEM DISPLAY DISPLAY SIG + DK BLU WIRE DK GRN/DK BLU WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE FUSE 16 FUSE 38 GRN WIRE GRN/BLK WIRE GRN/YEL 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 WINDOW SHELF 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 WHT WIRE YEL WIRE YEL/BLK WIRE

ACTIVE NOISE CANCELLATION MODULE BATT POS VOLT BLK WIRE BLU WIRE BLU/BLK WIRE BLU/GRY WIRE BLU/YEL WIRE BRN/BLU WIRE BRN/DK BLU WIRE DK BLU WIRE DK BLU/BLK WIRE DK GRN WIRE DK GRN/BLK WIRE GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/VIO WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE LEFT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE LEFT REAR DOOR SPEAKER 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 REAR RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RED/BRN WIRE RED/LT BLU WIRE RED/VIO WIRE REMOTE ENABLE SIG REPLICATED SIG RF SPEAKER (-) CTRL 1 RF SPEAKER SIG (-) RF SPEAKER SIG (-) 1 RIGHT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RR SPEAKER (+) CTRL RR SPEAKER CTRL (+) 1 RR SPEAKER SIG (-) SPEAKER (-) LOW REF VIO/DK BLU WIRE WHT WIRE YEL WIRE YEL/BLK 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

AUDIO AMPLIFIER BATT POS VOLT BLK WIRE BLU/BLK WIRE BLU/GRY WIRE BLU/YEL WIRE BRN/DK BLU WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/BLK WIRE DK BLU/YEL WIRE DK GRN WIRE DK GRN/BLK WIRE FC SPEAKER CTRL (+) GMLAN SERIAL DATA 2 GRN/BLK WIRE GRN/BRN WIRE GRN/VIO WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/VIO WIRE LEFT FRONT 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 MOST CONTROL MOST SERIAL DATA (+) REAR RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RED/BRN WIRE RED/LT BLU WIRE RED/VIO WIRE REPLICATED SIG RF SPEAKER (-) CTRL 1 RF SPEAKER SIG (-) 1 RIGHT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RR SPEAKER (+) CTRL RR SPEAKER SIG (-) SPEAKER (-) LOW REF SPEAKER CTRL (+) VIO/DK BLU WIRE WHT WIRE WHT/BLK WIRE WHT/LT GRN WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE YEL/BRN WIRE YEL/WHT WIRE

AUTOMATIC TRANSMISSION ASSEMBLY BATTERY BATTERY CURRENT SENSOR BATTERY FUSE BLOCK BLK WIRE BLK/GRY WIRE BLK/WHT WIRE BLU/GRN WIRE BODY CONTROL MODULE (UNDER FLOOR CONSOLE) CHARGING CIRCUIT COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN/BLK WIRE DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) FUSE 1 FUSE 2 GMLAN SERIAL DATA GMLAN SERIAL DATA - 1 GRY WIRE GRY/LT GRN WIRE HIGH SPEED GMLAN SERIAL DATA (-) (1) HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED IGN COIL FUSE IGNITION MODE SWITCH INSTRUMENT CLUSTER KEYLESS ENTRY CONTROL MODULE (RIGHT KICK PANEL) LO SPD GMLAN SERIAL DATA LOGIC LOW REF LOW SPEED LT GRN WIRE MAIN RLY FUSED SPLY 2 MODE VOLTAGE PARK/NEUTRAL SIG (1) PASSIVE START SW SIG 2 RED WIRE RED/YEL WIRE SIG GND STARTER ENABLE RELAY CTRL STARTER MOTOR STARTER RELAY STRTR MTR FUSE TRANSMISSION CONTROL MODULE TRANSMISSION PARK/ NEUTRAL SIG 1 UNDERHOOD FUSE BLOCK VIO WIRE VIO/DK BLU WIRE WHT WIRE WHT/GRY WIRE YEL WIRE YEL/BLK WIRE

AJAR SW SIG 1 B+ VOLT BLK WIRE BODY CONTROL MODULE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/YEL WIRE DRIVER INFORMATION CENTER DISPLAY EXTERIOR REAR COMPARTMENT LID UNLATCH SWITCH FUSE 41 20 GRY/LT GRN WIRE GRY/YEL WIRE HANDLE SW OPEN SIG HIGH SPEED GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK INTERIOR REAR COMPARTMENT LID UNLATCH SWITCH INTERIOR RELEASE SIG LOGIC LOW SPD GMLAN SERIAL DATA 2 LOW SPEED GMLAN SERIAL DATA (+) 1 MTR RELEASE CTRL REAR CLOSR FUSE REAR COMPARTMENT LID LATCH REAR COMPARTMENT LID UNLATCH RELAY RED/BRN WIRE UNDERHOOD FUSE BLOCK VIO/DK BLU WIRE VIO/GRY WIRE W/ STOP/START SYSTEM W/O STOP/START SYSTEM WHT WIRE YEL WIRE YEL/DK BLU WIRE