Buick LaCrosse III (2016-2019) yel Wiring diagrams

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 BLU/VIO WIRE DRIVER SEAT LUMBAR SUPPORT SWITCH DRIVER SEAT LUMBAR SUPPORT VALVE ASSEMBLY HOT AT ALL TIMES RED/BLU WIRE RWD UNDERHOOD FUSE BLOCK WNDW MIR SEAT FUSE YEL WIRE

BLK WIRE BRN WIRE FUSE GROUND GROUND DISTRIBUTION SYSTEM GRY/GRN WIRE HEATED STEERING WHEEL IND HEATED STEERING WHEEL SWITCH HOT W/ IGNITION MAIN RELAY ENERGIZED HTD WHL FUSE IGN INSIDE STEERING WHEEL) LEFT STEERING WHEEL CONTROLS SWITCH LOGIC LT BLU WIRE ORG/ WIRE PNK SW LED CTRL WIRE PPL/BLU WIRE RED WIRE RED/BLK WIRE RIGHT STEERING WHEEL CONTROLS SWITCH STEERING WHEEL AIR BAG COIL STEERING WHEEL HEATER STEERING WHEEL HEATING CONTROL MODULE SW SIG UNDERHOOD FUSE BLOCK VIO/GRY WIRE VOLT REF WHT WIRE YEL WIRE

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

ACC PWR FSD CTRL ACCESSORY DC/AC POWER INVERTER MODULE BATT POS VOLT BLK WIRE BLU/BRN WIRE BODY CONTROL MODULE CENTER CONSOLE ACCESSORY POWER RECEPTACLE 1 CENTER CONSOLE ACCESSORY POWER RECEPTACLE 2 CENTER CONSOLE COMPARTMENT ACCESSORY POWER RECEPTACLE CHARGE IND CTRL CIGARETTE LIGHTER RECEPTACLE CIRCUIT BREAKER 1 CIRCUIT BREAKER 2 DC TO AC FROM A/C HEV FUSE (DIAGRAM 2 OF 8) FROM HEADLAMP WASHER PUMP RELAY (DIAGRAM 2 OF 8) FUSE 27 FUSE 36 FUSE 37 GRN WIRE GROUND GRY WIRE GRY/VIO WIRE INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT END OF DASH) INVERTER CTRL KEYLESS ENTRY CONTROL MODULE LOGIC LOW REFERENCE MOBILE DEVICE WIRELESS CHARGER MODULE NCA WIRE RED WIRE RED/GRN WIRE RETAINED ACCESSORY POWER RELAY TO BODY CONTROL MODULE (DIAGRAM 2 OF 8) VIO WIRE YEL WIRE

8 WAY ABS VLV FUSE AUTOMATIC TRANSMISSION ASSEMBLY BLK WIRE BODY CONTROL MODULE CODRVR PWR SEAT FUSE DK BLU/VIO WIRE DK GRN/VIO WIRE ECM IGN FUSE ELECTRONIC BRAKE CONTROL MODULE ENGINE CONTROL MODULE ETRS IGN FUSE FROM WASH PUMP FUSE (DIAGRAM 2 OF 8) FUSE FUSE 3 HTD WHL FUSE IGNITION MAIN RELAY INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE KEYLESS ENTRY CONTROL MODULE PASSENGER PRESENCE MODULE PASSENGER SEAT ADJUSTER AUXILIARY SWITCH PASSENGER SEAT ADJUSTER SWITCH PEPS FUSE PPL/BLK WIRE REAR CLOSR FUSE REAR COMPARTMENT LID UNLATCH RELAY RED WIRE RED/DK BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE SADS FUSE STEERING COLUMN LOCK MODULE STEERING WHEEL AIR BAG COIL STEERING WHEEL HEATING CONTROL MODULE STR COL LOCK FUSE TCM/ IGN FUSE TO MIL SS FUSE (DIAGRAM 3 OF 8) TRANSMISSION CONTROL MODULE VIO/GRY WIRE VIO/LT GRN WIRE YEL WIRE

BATTERY POSITIVE VOLT BLK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/BLU WIRE BUS 2 COMPUTER DATA LINES SYSTEM CUSHION IND DRIVER SEAT CUSHION SWITCH DRIVER SEAT HEAT SWITCH DRIVER VENTILATED SEAT SWITCH DRV HEATED BACK NTC SIG FUSE 21 FUSE 22 GRN/BLU WIRE GRN/VIO WIRE GRY WIRE GRY/GRN WIRE HEAT IND HOT AT ALL TIMES IND INTERCONNECT LEFT REAR BACK SEAT HEATING ELEMENT LEFT REAR CUSHION SEAT HEATING ELEMENT LINEAR LOCAL INTERCONNECT NETWORK BUS 2 LOGIC LR CUSHION CLIMATE NTC RETURN LR HEATED SEAT CUSHION ELEMENT RETURN LR SEAT CLIMATE NTC RETURN LR SEAT CLIMATE NTC SIG MEDIUM NCA WIRE NETWORK ORG/BRN WIRE ORG/VIO WIRE PASS HEATED BACK NTC SIG PASS HEATED SEAT NTC SIG PASSENGER PASSENGER SEAT CUSHION SWITCH PASSENGER SEAT HEAT SWITCH PASSENGER VENTILATED SEAT SWITCH PPL PPL LR HEATED SEAT CUSHION ELEMENT SPLY VOLT REAR BODY FUSE BLOCK REAR SEAT HEATING CONTROL MODULE RED/WHT WIRE RED/YEL WIRE RIGHT REAR BACK SEAT HEATING ELEMENT RIGHT REAR CUSHION SEAT HEATING ELEMENT RR CUSHION CLIMATE NTC RETURN RR HEATED SEAT CUSHION ELEMENT RETURN RR HEATED SEAT CUSHION ELEMENT SPLY CTRL RR SEAT CLIMATE NTC RETURN SEAT HEAT SEAT HEAT IND SEAT IND SEAT) VENTILATION VIO/WHT WIRE WHT WIRE YEL WIRE

BLK WIRE BLK/ORG WIRE BLU/BLK WIRE BLU/VIO WIRE BRAKE FLUID LEVEL SWITCH BRK FLUID LEVEL SENS SIG BRN WIRE COMPUTER DATA LINES SYSTEM DATA BUS 3 DATA BUS 4 DK BLU WIRE DK GRN/GRY WIRE DK GRN/YEL WIRE DRIVER DOOR LATCH ASSEMBLY DRIVER SEAT BELT BUCKLE DRIVER SEAT BELT SWITCH DRIVER WINDOW MOTOR DRV SEAT BELT LOW REF DRV SEAT BELT SW SIG ELECTRONIC BRAKE CONTROL MODULE (LEFT REAR OF ENGINE COMPT) GRY WIRE GRY/RED WIRE HI SPD GMLAN SER DATA (+) 1 INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE LF DR AJAR SW SIG LOGIC LOW SPD GMLAN SER DATA LT GRN WIRE NCA WIRE ORG/BRN WIRE ORG/VIO WIRE PARK BRAKE CONTROL SWITCH PARK BRK APPLY SW SIG PARK BRK REL SW SIG PARK BRK REL SW VOLT REF PARK BRK SW SIG PARK BRK SW VOLT REF PASS SEAT BELT LOW REF PASS SEAT BELT SW SIG PASSENGER SEAT BELT BUCKLE PASSENGER SEAT BELT SWITCH PRK BRK SW SPLY VOLT RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR WINDOW SWITCH RR DR AJAR SW SIG SEAT BELT IND PASS AIR BAG SUPPLEMENTAL RESTRAINTS SYSTEM VIO/WHT WIRE WHT WIRE YEL WIRE YEL/RED WIRE