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

ABS VLV FUSE BATT POS VOLT BLK WIRE BLU/BLK WIRE BLU/VIO WIRE BRAKE FLUID LEVEL SWITCH BRAKE PRESSURE MODULATOR BRK FLUID LEVEL SENS SIG BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/YEL WIRE DK GRN/GRY WIRE DK GRN/VIO WIRE ELECTRONIC BRAKE CONTROL MODULE FUSE 3 GRY WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/RED WIRE GRY/WHT WIRE GRY/YEL WIRE HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (2) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED LEFT FRONT WHEEL SPEED SENSOR LEFT REAR WHEEL SPEED SENSOR LF WHEEL SPD SENS CTRL LF WHEEL SPD SENS SIG LR PARK BRK MTR APPLY CTRL LR PARK BRK MTR LO REF LR WHEEL SPD SENS CTRL LR WHEEL SPD SENS SIG MIL SS FUSE NCA WIRE PARK BRK APPLY SW SIG PARK BRK APPLY SW VOLT REF PARK BRK RELEASE SW SIG PARK BRK RELEASE SW VOLT REF PARK BRK SW SIG PARK BRK SW SUPPLY VOLT RED/YEL WIRE RF WHEEL SPD SENS CTRL RF WHEEL SPD SENS SIG RIGHT FRONT WHEEL SPEED SENSOR RIGHT REAR WHEEL SPEED SENSOR RR PARK BRK MTR APPLY CTRL RR PARK BRK MTR LO REF RR WHEEL SPD SENS CTRL RR WHEEL SPD SENS SIG RUN/CRANK IGN 1 VOLT SERIAL DATA COMMUNICATION ENABLE SHIFT INTERLOCK SYSTEM UNDERHOOD FUSE BLOCK VIO WIRE VIO/GRY WIRE WHT WIRE WHT/DK BLU WIRE YEL WIRE YEL/RED WIRE

ABS IND. ACCESSORY WAKEUP SERIAL DATA BATT POS VOLT BLK WIRE BLK/BRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BLK WIRE BLU/VIO WIRE BODY CONTROL MODULE (UNDER FLOOR CONSOLE) BRAKE BOOSTER VACUUM SENSOR BRAKE PEDAL POSITION SENSOR (TOP OF BRAKE PEDAL ASSEMBLY) BRAKE WARNING IND BRK APPLY SENS CTRL BRK APPLY SENS LOW REF BRK APPLY SENS SIG BRK POS SENS 5 VOLT REF BRK POS SENS LO REF BRK POS SENS SIG BRK VACUUM SENS SIG BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE/ETC/TCC BRK SIG DK BLU WIRE DK BLU/YEL WIRE DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) ESC IND ESC OFF IND FUSE 20 FUSED SUPPLY 2 GRY/LT GRN WIRE GRY/RED WIRE HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK INSTRUMENT PANEL MULTI- FUNCTION SWITCH LOGIC PARK BRAKE CONTROL SWITCH (CENTER OF FLOOR CONSOLE) RED/BRN WIRE SIG GND TRACTION CONTROL OFF IND TRACTION CONTROL SWITCH TRACTION CTRL SW SIG 1 VIO/YEL WIRE WHT WIRE WHT/DK BLU WIRE WHT/LT GRN WIRE WHT/RED WIRE YEL WIRE YEL/RED WIRE YEL/VIO WIRE

AIR QUALITY SENS SIG AMBIENT LIGHT/SUNLOAD SENSOR (TOP CENTER OF DASH) BATT POS VOLT BLK WIRE BLK/BLU WIRE BLOWER MOTOR (BOTTOM OF HVAC BLOWER HOUSING) BLWR MTR SPD CTRL BRN WIRE BUS 15 COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DK BLU WIRE DK BLU/BRN WIRE DK BLU/GRY WIRE DK BLU/YEL WIRE DK GRN/WHT WIRE DK GRN/YEL WIRE DOOR LOCKS, ANTI-THEFT SYSTEMS ELECTRIC VARIABLE DISPLACEMENT CTRL ELECTRIC VARIABLE DISPLACEMENT SUPPLY FUSE 33 FUSE 39 FUSE 4 GROUND GRY WIRE GRY/BLU WIRE GRY/GRN WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES HUMIDITY SENSOR SIGNAL HUMIDITY TEMPERATURE SENSOR SIGNAL HUMIDITY/WINDSCREEN TEMPERATURE SENSOR LOW REFERENCE HVAC CONTROL MODULE (BEHIND HVAC CONTROLS) INSIDE AIR TEMPERATURE SENSOR SIGNAL INSTRUMENT PANEL FUSE BLOCK LINEAR INTERCONNECT NETWORK SERIAL DATA BUS 9 LOGIC LOGIC WINDSHIELD TEMPERATURE, INSIDE MOISTURE SENSOR LOW SPEED GMLAN SERIAL DATA LT GRN WIRE REAR DEFOG RELAY CTRL RED/DK BLU WIRE RED/LT BLU WIRE RED/VIO WIRE RED/WHT WIRE RUN/CRANK IGNITION 1 VOLTAGE SERIAL DATA SOLAR SENSOR DRIVER SIGNAL SOLAR SENSOR LOW REFERENCE VIO/GRY WIRE VIO/WHT WIRE W/ ONSTAR W/O ONSTAR WHT WIRE WINDSCREEN TEMPERATURE SENSOR SIGNAL YEL WIRE YEL/BLU WIRE YEL/RED WIRE

APPLY SW SIG APPLY SW VOLT REF BACKUP LAMPS CIRCUIT BLK WIRE BLU/BLK WIRE BLU/VIO WIRE BRN WIRE BRN/DK GRN WIRE BRN/YEL WIRE CENTER HIGH MOUNTED STOP LAMP COMPUTER DATA LINES SYSTEM DK BLU WIRE ELECTRONIC BRAKE CONTROL MODULE GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/RED WIRE HI SPD GMLAN SERIAL DATA (-) (1) LEFT LICENSE PLATE LAMP NCA WIRE PARK BRAKE CONTROL SWITCH PARK BRK SW SIG PASSENGER OUTSIDE REAR VIEW MIRROR PASSENGER OUTSIDE REAR VIEW MIRROR COURTESY LAMP RED WIRE RELEASE SW SIG RELEASE SW VOLT REF RIGHT BACKUP LAMP RIGHT LICENSE PLATE LAMP RIGHT REAR SIDE MARKER LAMP RIGHT REAR TURN SIGNAL LAMP RIGHT TAIL LAMP RIGHT TAIL LAMP ASSEMBLY RIGHT TAIL/STOP LAMP RIGHT TURN SIGNAL REPEATER LAMP SUPPLY VOLT VIO WIRE VIO/WHT WIRE WHT WIRE WHT/YEL WIRE YEL WIRE YEL/RED WIRE

AIR TEMP SENS SIG AJAR SW SIG 1 AMBIENT AIR TEMPERATURE SENSOR BATT POS VOLT BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/LT GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BLK WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/WHT WIRE BODY CONTROL MODULE (UNDER FLOOR CONSOLE) BRN WIRE BRN/LT GRN WIRE COMPUTER DATA LINES SYSTEM DATA BUS 3 DATA BUS 4 DK BLU WIRE DK BLU/BLK WIRE DK GRN/DK BLU WIRE DK GRN/GRY WIRE DK GRN/VIO WIRE DK GRN/YEL WIRE ELECTRONIC BRAKE CONTROL MODULE (LEFT REAR OF ENGINE COMPT) ENGINE CONTROL MODULE ENGINE CONTROLS SYSTEM ENGINE OIL LEVEL SWITCH ENGINE OIL PRESSURE SENSOR FUEL LEVEL SENSOR FUEL LEVEL SENSOR ASSEMBLY FUEL PUMP, LEVEL SENSOR ASSEMBLY GRY WIRE GRY/RED WIRE HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA BUS (+) 3 HIGH SPD GMLAN SERIAL DATA (+) 1 LIN DATA BUS 26 LOGIC NCA WIRE OIL LEVEL SW SIG OIL PRESS SENS LOW REF OIL PRESS SENS SIG 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 PASSENGER DOOR LATCH ASSEMBLY PASSENGER WINDOW MOTOR PRIMARY FUEL LEVEL SENSOR PRIMARY LEVEL SENS SIG PRK BRK SW SPLY VOLT REAR COMPARTMENT LID LATCH RED/DK BLU WIRE REMOTE PRNDM ENABLE RF DR AJAR SW SIG RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR WINDOW SWITCH RLY COIL CTRL RR DR AJAR SW SIG SECONDARY FUEL LEVEL SENSOR SECONDARY LEVEL SENS SIG SIG GND TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LEVER POSITION INDICATOR TRANSMISSION SHIFT LEVER KNOB VIO/GRY WIRE WHT WIRE WHT/RED WIRE YEL WIRE YEL/BRN WIRE YEL/RED WIRE

BATT POSITIVE VOLT BLK WIRE BLK/BLU WIRE BLK/DK BLU WIRE BLK/GRN WIRE BLU WIRE BLU/GRN WIRE BLU/YEL WIRE BRN/YEL WIRE COMMON CTRL COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DK BLU/DK GRN WIRE DK GRN/WHT WIRE GRN/BLK WIRE GRN/VIO WIRE GRN/WHT WIRE GRY/GRN WIRE LH (-) RH (+) SIG LIN DATA BUS 8 LOGIC LOW REF LOW SPEED GMLAN SERIAL DATA LIN BUS 8 LT GRN WIRE MEM SEAT SW SET SIG MEM SEAT SW SIG (1) MEM SW LOW REF NAVIGATION SYSTEM PASSENGER OUTSIDE REAR VIEW MIRROR PASSENGER OUTSIDE REAR VIEW MIRROR COURTESY LAMP PASSENGER OUTSIDE REAR VIEW MIRROR GLASS PASSENGER OUTSIDE REAR VIEW MIRROR MOTOR PASSENGER SIDE OBJECT DETECTION INDICATOR PASSENGER WINDOW SWITCH RED/BLU WIRE RH (+) LH (-) CTRL RIGHT TURN SIGNAL REPEATER LAMP SEAT MEMORY CONTROL MODULE UP (+) DOWN (-) CTRL UP DOWN SIG VIO/WHT WIRE WHT WIRE YEL/RED WIRE YEL/VIO WIRE

BATTERY POSITIVE VOLT BLK WIRE BLU/BLK WIRE BLU/VIO WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN/VIO WIRE DRIVER INFORMATION CENTER DISPLAY ELECTRONIC BRAKE CONTROL MODULE (LEFT REAR OF ENGINE COMPT) FUSE 3 GRY WIRE GRY/BLK WIRE GRY/LT GRN WIRE GRY/RED WIRE HI SPD GMLAN SER DATA (+) 1 HI SPD GMLAN SER DATA (-) 1 PARK BRK SW SIG HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT PARK BRAKE ACTUATOR LH REAR PARK BRK MTR APPLY CTRL LH REAR PARK BRK MTR LOW REF LOGIC LOW SPD GMLAN SER DATA 2 PARK BRAKE CONTROL SWITCH (CENTER OF FLOOR CONSOLE) PARK BRK APPLY SW SIG PARK BRK APPLY SW VOLT REF PARK BRK RELEASE SW SIG PARK BRK RELEASE SW VOLT REF PARK BRK SW SPLY VOLT PARK IND RED/YEL WIRE RH REAR PARK BRK MTR APPLY CTRL RH REAR PARK BRK MTR LOW REF RIGHT PARK BRAKE ACTUATOR SERVICE PARK BRAKE IND UNDERHOOD FUSE BLOCK WHT WIRE YEL WIRE YEL/RED 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

A/C COMP CLUTCH RLY CTRL A/C COMPRESSOR CLUTCH RELAY A/C REFRIGERANT PRESSURE SENS SIG ACC WAKEUP SERIAL DATA AERO SHUTTER FUSE AIR CONDITIONING SYSTEM AIR TEMP SENS SIG ANTI-THEFT SYSTEM APP LOW REF 1 APP LOW REF 2 APP SIG (1) APP SIG (2) BATT POS VOLT BATTERY FUSE BLOCK BLK/DK BLU WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/GRY WIRE BRK POS SENS LOW REF BRK POS SENS SIG BRK VACUUM SENS SIG BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COOLING FAN CTRL RELAY CTRL COOLING FANS SYSTEM CRUISE CONTROL SYSTEM CRUISE/ETC/TCC BRK SIG DATA OUT SIG DK BLU WIRE DK BLU/BLK WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECM IGN FUSE ENGINE CONTROL MODULE ENGINE CONTROLS IGNITION RELAY ENGINE IND CTRL EVAP CANISTER VENT SOL CTRL EVAPORATIVE EMISSION VENT SOLENOID VALVE FUEL TANK PRESSURE SENS SIG FUSE 2 FUSED SPLY 1 FUSED SPLY 2 FUSED SPLY 3 GRY WIRE HI SPD GMLAN SERIAL DATA (+) (3) HI SPD GMLAN SERIAL DATA (-) (1) HOOD STATUS A SIG HOT AT ALL TIMES HUMIDITY SENS SIG IGN COIL FUSE LEFT CORNERING LAMP RELAY LT GRN/WHT WIRE MASS AIR FLOW SENS SIG PARK/NEUTRAL SIG (1) PWR/TRN OFF ENG FUSE PWR/TRN ON ENG FUSE RED/BRN WIRE RED/YEL WIRE RIGHT CORNERING LAMP RELAY RLY COIL CTRL RUN/CRANK IGN 1 VOLT SIG GND STARTER ENABLE RELAY CTRL STARTING/CHARGING SYSTEM TRANSMISSION CONTROL SYSTEM UNDERHOOD FUSE BLOCK VIO/DK BLU WIRE VIO/LT GRN WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRY WIRE WHT/LT GRN WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE

BANK 1 SENSOR 2 HEATED OXYGEN SENSOR BANK 2 SENSOR 2 HEATED OXYGEN SENSOR BLK/BRN WIRE BLK/GRN WIRE BLK/LT GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/WHT WIRE BODY CONTROL MODULE (UNDER FLOOR CONSOLE) BRK APPLY BRK APPLY SENS CTRL BRK APPLY SENS SIG BRN/GRY WIRE BRN/WHT WIRE CANISTER VENT SOL FUSE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK BLU/YEL WIRE ECM IGN FUSE FUEL TANK PRESSURE SENSOR FUSE 9 GRY WIRE GRY/RED WIRE GRY/WHT WIRE HI SPD GMLAN HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT PANEL FUSE BLOCK LT GRN/WHT WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR NCA WIRE RED/BRN WIRE SENS LOW REF SERIAL DATA (-) (1) UNDERHOOD FUSE BLOCK VIO/DK BLU WIRE VIO/LT GRN WIRE WHT WIRE WHT/BRN WIRE WHT/DK BLU WIRE WHT/RED WIRE WHT/YEL WIRE YEL/DK BLU WIRE YEL/RED WIRE YEL/WHT WIRE