Buick LaCrosse III (2016-2019) red/vio Wiring diagrams

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

BLK WIRE BLU WIRE BLU/YEL WIRE BRN WIRE DOWN DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT FRONT VERTICAL MOTOR DRIVER SEAT HORIZONTAL MOTOR DRIVER SEAT REAR VERTICAL MOTOR DRIVER SEAT RECLINE MOTOR DRVR PWR SEAT FUSE GRN WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES RECLINE FWD RECLINE RWD RED/VIO WIRE RWD UNDERHOOD FUSE BLOCK VIO WIRE YEL WIRE

BLK WIRE DRIVER SEAT LUMBAR SUPPORT PUMP DRIVER SEAT LUMBAR SUPPORT SWITCH DRIVER SEAT LUMBAR SUPPORT VALVE ASSEMBLY DRIVER SEAT MASSAGE SWITCH DRIVER SEAT MASSAGE VALVE ASSEMBLY FRT HEATED SEAT FUSE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED LOGIC ORG/BLK WIRE POWER DISTRIBUTION SYSTEM RED/VIO WIRE RVC/ VENT FUSE UNDERHOOD FUSE BLOCK VIO/WHT WIRE WHT WIRE YEL/BLK WIRE

BATTERY POSITIVE VOLT BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/VIO WIRE COMPUTER DATA LINES SYSTEM DRIVER BACK SEAT HEATING ELEMENT DRIVER CUSHION SEAT HEATING ELEMENT DRV HEATED BACK NTC SIG DRV HEATED SEAT ELEMENT SPLY CTRL DRV HEATED SEAT NTC LOW REF DRV HEATED SEAT NTC SIG DRV SEAT HEADREST MOTOR FORWARD CTRL DRV SEAT VENT MOTOR CTRL 1 FRONT SEAT HEATING CONTROL MODULE FRT HEATED SEAT FUSE GRN/BLU WIRE GRN/VIO WIRE GROUND GRY/BLK WIRE HOT AT ALL TIMES LOCAL INTERCONNECT NETWORK SERIAL DATA BUS 2 NCA WIRE PASS HEATED BACK NTC LOW REF PASS HEATED BACK NTC SIG PASS HEATED SEAT ELEMENT RETURN PASS HEATED SEAT ELEMENT VOLT PASS HEATED SEAT NTC LOW REF PASS HEATED SEAT NTC SIG PASS SEAT VENT MOTOR CTRL 1 PASSENGER BACK SEAT HEATING ELEMENT PASSENGER CUSHION SEAT HEATING ELEMENT POWER DISTRIBUTION SYSTEM RED/BLU WIRE RED/VIO WIRE UNDERHOOD FUSE BLOCK VIO/WHT WIRE WHT/BLU WIRE WHT/GRY WIRE YEL/GRY WIRE

BATTERY POSITIVE VOLTAGE BLK WIRE BLU/VIO WIRE BLU/YEL WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DRIVER PWR SEAT FUSE DRIVER SEAT FRONT VERTICAL MOTOR DRIVER SEAT HORIZONTAL MOTOR DRIVER SEAT REAR VERTICAL MOTOR DRIVER SEAT RECLINE MOTOR FRONT VERTICAL MTR DWN CTRL FRONT VERTICAL MTR UP CTRL GRN WIRE GRN/BRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/GRN WIRE HORIZONTAL MTR FORWARD CTRL HORIZONTAL MTR REARWARD CTRL HOT AT ALL TIMES LINEAR INTERCONNECT NETWORK BUS 8 LOW SPEED GMLAN SERIAL DATA LT GRN WIRE REAR VERTICAL MTR DOWN CTRL REAR VERTICAL MTR UP CTRL RECLINE MTR FORWARD CTRL RECLINE MTR REARWARD CTRL RED/BLU WIRE RED/DK BLU WIRE RED/VIO WIRE SEAT MEMORY CONTROL MODULE (UNDER DRIVER'S SEAT) UNDERHOOD FUSE BLOCK WHT/BLK WIRE WHT/RED WIRE WNDW MIR SEAT FUSE YEL WIRE YEL/BLU WIRE

ACTIVE NOISE CANCELLATION MODULE BATTERY BATTERY FUSE BLOCK BLOWER MOTOR BODY CONTROL MODULE DRIVER WINDOW MOTOR ENGINE CONTROL MODULE FUSE 1 FUSE 16 FUSE 17 FUSE 18 FUSE 2 FUSE 3 FUSE 4 FUSE 5 FUSE 6 FUSE 7 FUSE 8 FUSE 9 GENERATOR LEFT REAR WINDOW SWITCH PASSENGER WINDOW MOTOR POWER STEERING CONTROL MODULE RED WIRE RED/BRN WIRE RED/DK BLU WIRE RED/DK GRN WIRE RED/GRY WIRE RED/LT GRN WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT REAR WINDOW SWITCH STARTER MOTOR STEERING COLUMN POSITION CONTROL MODULE TO INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 7 OF 8) TO REAR BODY FUSE BLOCK (DIAGRAM 4 OF 8) TO UNDERHOOD FUSE BLOCK (DIAGRAM 2 OF 8) WHT WIRE YEL WIRE

A/C COMPRESSOR CLUTCH RELAY A/C HEV FUSE ACC IGN VOLT ACC IND ACC LED SIG BLK WIRE BLK/GRY WIRE BODY CONTROL MODULE BRN/BLK WIRE CHARGE IND CTRL COOL FAN FUSE DC DC BATT 2/AWD FUSE DK BLU/BLK WIRE DK BLU/LT GRN WIRE DK GRN/BLK WIRE EBOOST/COOL FAN LT FUSE ENGINE CONTROLS IGNITION RELAY ENGINE START/ STOP FOG LAMP FUSE FROM BATTERY FUSE BLOCK (DIAGRAM 1 OF 8) FROM MOBILE DEVICE WIRELESS CHARGER MODULE (DIAGRAM 5 OF 8) FRONT FOG LAMP RELAY FUEL MDL FUSE FUEL PUMP DRIVER CONTROL MODULE GRN WIRE GRY WIRE HEADLAMP HIGH BEAM RELAY HEADLAMP LOW BEAM RELAY HORN RELAY IGNITION MODE SWITCH ILL KEYLESS ENTRY CONTROL MODULE LEFT COOLING FAN MOTOR LOW REFERENCE LT GRN WIRE NCA WIRE REAR DEFOGGER RELAY REAR DIFFERENTIAL CLUTCH CONTROL MODULE REAR WINDOW WASHER PUMP RELAY RED/BRN WIRE RED/DK BLU WIRE RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT COOLING FAN MOTOR RR HTD SEAT/ BSM/ESS FAN FUSE RUN/CRANK IGN 1 VOLT START IND START LED SIG START SW SIG 2 STARTER RELAY SUSPENSION CONTROL MODULE SW MODE VOLT TO FRT HEATED SEAT FUSE (DIAGRAM 4 OF 8) TO FUSE 27 (DIAGRAM 5 OF 8) TO IGNITION MAIN RELAY (DIAGRAM 8 OF 8) TO RETAINED ACCESSORY POWER RELAY (DIAGRAM 5 OF 8) TO TCM/ ECM FUSE (DIAGRAM 6 OF 8) TO WNDW MIR SEAT FUSE (DIAGRAM 3 OF 8) TRANSMISSION RANGE CONTROL MODULE TRCM FUSE VIO/BLK WIRE VIO/YEL WIRE WASH PUMP FUSE WINDSHIELD WASHER PUMP RELAY YEL WIRE YEL/GRN WIRE

CANISTER VENT SOL FUSE DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT LUMBAR SUPPORT PUMP DRIVER SEAT MASSAGE SWITCH DRVR PWR SEAT FUSE EVAPORATIVE EMISSION VENT SOLENOID VALVE FROM BATTERY FUSE BLOCK (DIAGRAM 1 OF 8) FROM HEADLAMP HIGH BEAM RELAY (DIAGRAM 2 OF 8) FRONT FOG LAMP RELAY FRONT SEAT HEATING CONTROL MODULE FRT HEATED SEAT FUSE FUSE 1 FUSE 10 FUSE 11 FUSE 12 FUSE 13 FUSE 14 FUSE 15 FUSE 16 FUSE 17 FUSE 18 FUSE 19 FUSE 2 FUSE 21 FUSE 22 FUSE 24 FUSE 25 FUSE 26 FUSE 27 FUSE 28 FUSE 3 FUSE 31 FUSE 33 FUSE 34 FUSE 35 FUSE 38 FUSE 39 FUSE 4 FUSE 40 FUSE 41 FUSE 42 FUSE 5 FUSE 6 FUSE 7 FUSE 8 FUSE 9 PASSENGER SEAT LUMBAR SUPPORT PUMP PASSENGER SEAT MASSAGE SWITCH REAR SEAT HEATING CONTROL MODULE RED/BLU WIRE RED/BRN WIRE RED/GRY WIRE RED/LT GRN WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE SEAT MEMORY CONTROL MODULE SUNROOF FUSE SUNROOF MOTOR W/ FRONT SEAT HEATER W/ MASSAGE SEAT CONTROL W/ MASSAGE SEAT CONTROL, FRONT SEAT HEATER

AIR IONIZER AUTOMATIC TRANSMISSION ASSEMBLY AUXILIARY HEATER COOLANT PUMP RELAY BATTERY SAVER RELAY 1 BLK WIRE BLU/GRN WIRE BODY CONTROL MODULE CRN RT FUSE DATA LINK CONNECTOR DK GRN WIRE FROM EBOOST/ COOL FAN LT FUSE (DIAGRAM 2 OF 8) FROM FUSE 35 (DIAGRAM 7 OF 8) FROM FUSE 42 (DIAGRAM 7 OF 8) FRONT OVERHEAD CONSOLE ASSEMBLY FRT WPR FUSE FUSE 20 FUSE 21 FUSE 22 FUSE 23 FUSE 24 FUSE 25 FUSE 26 FUSE 29 FUSE 30 FUSE 31 FUSE 32 FUSE 33 FUSE 34 FUSE 41 GARAGE DOOR OPENER GRY/VIO WIRE HDLP LVL FUSE HVAC CONTROL MODULE LEFT HEADLAMP ASSEMBLY LEFT HEADLAMP HORIZONTAL MOTOR LEFT STEERING WHEEL CONTROLS SWITCH NCA WIRE PPL RAIN/ AMBIENT LIGHT SENSOR MODULE RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT CORNERING LAMP RELAY RIGHT HEADLAMP ASSEMBLY RIGHT HEADLAMP HORIZONTAL MOTOR RIGHT STEERING WHEEL CONTROLS SWITCH SECONDARY AIR INJECTION SOLENOID VALVE RELAY SERIAL DATA GATEWAY MODULE STEERING COLUMN LOCK MODULE STEERING WHEEL AIR BAG COIL TCM/ ECM FUSE TRANSMISSION CONTROL MODULE VIO WIRE VIO/LT BLU WIRE W/ ADAPTIVE CRUISE CONTROL WINDSHIELD WIPER MOTOR

ACTIVE SAFETY CONTROL MODULE AUDIO/ VIDEO INPUT ADAPTER AUXILIARY AUDIO INPUT AUXILIARY HVAC CONTROL MODULE BASE RADIO BLU WIRE CHASSIS CONTROL MODULE DK BLU WIRE DK GRN WIRE DRIVER SEATBACK VIDEO DISPLAY FROM BATTERY FUSE BLOCK (DIAGRAM 1 OF 8) FRONT VIEW CAMERA (IF EQUIPPED) FUSE 35 FUSE 38 FUSE 39 FUSE 40 FUSE 42 GRY WIRE HEAD-UP DISPLAY HUMAN MACHINE INTERFACE CONTROL MODULE HVAC CONTROLS INFO DISPLAY MODULE INFOTAINMENT CONTROL TOUCHPAD INSTRUMENT CLUSTER LEFT SIDE OBJECT SENSOR MODULE LONG RANGE RADAR SENSOR MODULE LT BLU WIRE MEDIA DISC PLAYER PARKING ASSIST CONTROL MODULE PASSENGER SEATBACK VIDEO DISPLAY PREMIUM RADIO RADIO RED WIRE RED/BLU WIRE RED/DK BLU WIRE RED/GRY WIRE RED/LT BLU WIRE RED/VIO WIRE RED/YEL WIRE RIGHT SIDE OBJECT SENSOR MODULE TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE TO FUSE 23 (DIAGRAM 6 OF 8) TO FUSE 41 (DIAGRAM 6 OF 8) W/ ONSTAR