Buick LaCrosse II facelift (2013-2016) wht/dk blu Wiring diagrams

13 14 6 15 14 5 ACCESSORY WAKEUP SERIAL DATA SER DATA (-) 1 SER DATA (+) 1 2.4L 3.6L 5 17 SER DATA (+) 1 SER DATA (-) 1 6 18 SER DATA (+) 1 SER DATA (-) 1 8 7 12 2 HS SERIAL DATA - HS SERIAL DATA + BATTERY ENERGY CONTROL MODULE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE COMM ENABLE CONTROL SOLENOID VALVE ASSEMBLY AUTOMATIC TRANSMISSION ASSEMBLY DATA COM ENABLE DK BLU WIRE DK BLU/GRY WIRE DK BLU/YEL WIRE DOOR HARNESS) ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) GRY WIRE HIGH SERIAL DATA HS SERIAL DATA - HYDRID/EV BATTERY PACK LOW SERIAL DATA LT GRN/BLK WIRE PNK/BLK WIRE POWER STEERING CONTROL MODULE (LOWER LEFT SIDE OF DASH) SER DATA (-) (1) SER DATA - (3) SERIAL DATA SERIAL DATA ACC WAKEUP STARTER/GENERATOR CONTROL MODULE TAN/WHT WIRE VIO/YEL WIRE W/ BELT DRIVE W/ VARIABLE EFFORT W/O BELT DRIVE W/O VARIABLE EFFORT OR BELT DRIVE WHT WIRE WHT/BLU WIRE WHT/DK BLU WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE

2.4L HYBRID 3.6L 5382 5380 5381 68 48 47 LOW REF BRAKE POS SENS SIG 7 13 BRAKE APPLY SENS SIG SUPPLY VOLTAGE ACTUATOR CTRL CLOSE ACTUATOR CTRL OPEN ADAPTIVE CRUISE SWITCH BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRAKE PEDAL POSITION SENSOR (NEAR TOP OF ACCELERATOR PEDAL ASSEMBLY) BRN/LT GRN WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SW SIG CRUISE SWITCH CRUISE/ETC/TCC BRK SIG ECM IGN FUSE ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) GMLAN SERIAL DATA GMLAN SERIAL DATA - 34 70 54 2701 3630 2752 GRN WIRE GRN/WHT WIRE GROUND GRY WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IPC FUSE LEFT STEERING WHEEL CONTROLS SWITCH LIGHTING CTRL SW REF LOGIC LOW REF LOW REF 2 POSITIVE VOLTAGE RED/BLK WIRE RED/WHT WIRE RES+ SENS SIG LOW REF SET- SIG 1 LOW REF 1 SIG 2 STEERING WHEEL AIR BAG COIL UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO/LT GRN WIRE W/ ADAPTIVE CRUISE CONTROL W/O ADAPTIVE CRUISE CONTROL WHT WIRE WHT/DK BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/WHT WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 BATT POS VOLT 3 7 HI SPD GMLAN (+) HI SPD GMLAN (-) 3.6L 2.4L HYBRID ACCELERATOR PEDAL POSITION SENSOR (LEFT SIDE OF DASH) BLK WIRE BLK/BLU WIRE BLK/VIO WIRE BLK/YEL WIRE BRK POS SENS SIG LOW REF BRN/RED WIRE COMM ENABLE COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY AUTOMATIC TRANSMISSION ASSEMBLY CRUISE IND DISTANCE SENSING CRUISE CONTROL MODULE (BEHIND UPPER GRILLE OPENING) DK BLU WIRE DK BLU/YEL WIRE DRIVER INFORMATION CENTER DISPLAY GRN/WHT WIRE GROUND HOT AT ALL TIMES HYBRID/EV BATTERY PACK (RIGHT SIDE OF LUGGAGE COMPT) HYBRID/EV POWERTRAIN CONTROL MODULE INSTRUMENT CLUSTER LOGIC LRR LDW FUSE MOST SERIAL DATA (+) POSITIVE VOLTAGE RED/BLK WIRE RED/GRY WIRE SER DATA (-) SER DATA (+) SER DATA (-) SER DATA (+) STARTER/GENERATOR CONTROL MODULE SYSTEM TRANSMISSION CONTROL MODULE TRANSMISSION INPUT SHAFT SPEED SENSOR TRANSMISSION OUTPUT SHAFT SPEED SENSOR UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) WHT WIRE WHT/DK BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

1 2 3 4 5 6 DATA (-) DATA (-) DATA (+) DATA (+) VOLT GND 1 2 BATTERY GND ANTI-LOCK BRAKES SYSTEM AUTOMATIC TRANSMISSION ASSEMBLY BATTERY FUSE BLOCK (TOP OF BATTERY) BLK WIRE BLU WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DATA (+) DATA (-) SPLY VOLT DK BLU WIRE DK BLU/YEL WIRE DRIVER INFORMATION CENTER DISPLAY ELECTRONIC BRAKE CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) FUSE GRN WIRE GRN/BRN WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER LOGIC LT GRN WIRE POWER STEERING CONTROL MODULE (LOWER LEFT SIDE OF DASH) POWER STEERING MOTOR POWER STEERING SHAFT TORQUE SENSOR RED/YEL WIRE SENS SIG SENS RTN STEERING ANGLE SENSOR (BASE OF STEERING COLUMN) SYSTEM TRANSMISSION CONTROL MODULE (TCM) 2.4L 3.6L TRANSMISSION OUTPUT SHAFT SPEED SENSOR W/ ADAPTIVE CRUISE CONTROL WHT WIRE WHT/DK BLU WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 DATA (-) DATA (-) DATA (+) DATA (+) VOLT GND 1 2 GND BATTERY 2.4L 3.6L 2500 2500 2501 2501 COMPUTER DATA LINES 9 8 17 DATA + DATA - SPLY VOLT ANTI-LOCK BRAKES SYSTEM AUTOMATIC TRANSMISSION ASSEMBLY BATTERY FUSE BLOCK (TOP OF BATTERY) BLK WIRE BLU WIRE BLU/YEL WIRE BRN WIRE COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DK BLU WIRE DRIVER INFORMATION CENTER DISPLAY ELECTRONIC BRAKE CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) FUSE GRN WIRE GRN/BRN WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER LOGIC LT GRN WIRE POWER STEERING CONTROL MODULE (LOWER LEFT SIDE OF DASH) POWER STEERING MOTOR (ON STEERING GEAR) POWER STEERING SHAFT TORQUE SENSOR RED/YEL WIRE SENS SIG SENS RTN STEERING ANGLE SENSOR (BASE OF STEERING COLUMN) SYSTEM TRANSMISSION CONTROL MODULE (TCM) TRANSMISSION OUTPUT SHAFT SPEED SENSOR W/ ADAPTIVE CRUISE CONTROL WHT WIRE WHT/DK BLU WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 BATTERY SOL CTRL 1 2 3 4 5 6 DATA (-) DATA (-) DATA (+) DATA (+) VOLT GND 2.4L 3.6L 9 8 17 DATA + DATA - SPLY VOLT ANTI-LOCK BRAKES SYSTEM AUTOMATIC TRANSMISSION ASSEMBLY BLK WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BRN/GRN WIRE BRN/LT GRN WIRE COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DK BLU WIRE DRIVER INFORMATION CENTER DISPLAY ELECTRONIC BRAKE CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) FUSE GRN WIRE GRN/BRN WIRE HOT AT ALL TIMES IGN INSTRUMENT CLUSTER LOGIC POWER STEERING CONTROL MODULE (LOWER LEFT SIDE OF DASH) RED WIRE RED/DK BLU WIRE SERIAL DATA (-) SERIAL DATA (+) SHAFT SPEED SENSOR SOL LO REF STEERING ANGLE SENSOR (BASE OF STEERING COLUMN) SYSTEM TRANS- MISSION OUTPUT TRANSMISSION CONTROL MODULE (TCM) UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) W/ ADAPTIVE CRUISE CONTROL WHT WIRE WHT/DK BLU WIRE

135 MM FROM BREAKOUT TO 6105 6105 6106 6106 COMPUTER DATA LINES SYSTEM AWD/SADS FUSE BLK WIRE BLK/BRN WIRE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE BRN WIRE BRN/DK BLU WIRE BRN/LT GRN WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/GRY WIRE DK GRN/GRY WIRE DRIVER INFORMATION CENTER DISPLAY GMLAN SER DATA (+) GMLAN SER DATA (+) GMLAN SER DATA (-) GMLAN SER DATA (-) GRN WIRE GRN/RED WIRE GRY/BLU WIRE GRY/DK BLU WIRE GRY/RED WIRE GRY/WHT WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT FRONT SHOCK ABSORBER ACTUATOR LEFT FRONT VERTICAL BODY ACCELERATION SENSOR (LEFT FRONT STRUT TOWER) LEFT REAR SHOCK ABSORBER ACTUATOR LF WHL ACC LOW REF LOGIC LT GRN WIRE LT GRN/GRY WIRE LT GRN/VIO WIRE NCA WIRE ORG/ WIRE PACK) PNK/BLK WIRE REAR VERTICAL BODY ACCELERATION SENSOR (FRONT OF REAR COMPT) RED/GRY WIRE RIGHT FRONT SHOCK ABSORBER ACTUATOR RIGHT FRONT VERTICAL BODY ACCELERATION SENSOR (RIGHT FRONT STRUT TOWER) RIGHT REAR SHOCK ABSORBER ACTUATOR SUSPENSION CONTROL MODULE (LEFT CORNER OF REAR COMPT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO WIRE WHT WIRE WHT/BRN WIRE WHT/DK BLU WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/RED BLK/BRN WIRE YEL/RED WIRE

4 2 1 ACTR SPLY VOLT ACTR TRANSMIT SIG ACTR RTN ACTR RECEIVE SIG AJAR SW SIG BLK WIRE BRN/WHT WIRE BRN/YEL WIRE CHILD SECURITY LOCK DISABLE RELAY COMPUTER DATA LINES SYSTEM DK BLU WIRE DRIVER INFORMATION SECURITY CENTER IND DISPLAY FROM BREAKOUT TO WINDOW MOTOR) GMLAN SERIAL DATA LOGIC GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/LT GRN WIRE INSTRUMENT CLUSTER KEYLESS ENTRY ANTENNA LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR WINDOW SWITCH LT GRN/GRY WIRE NETWORK BUS 3 NETWORK BUS 4 PASSENGER WINDOW MOTOR (FRONT PASSENGER'S DOOR) RECEIVER (ON PASSENGER SIDE C-PILLAR) REMOTE CONTROL DOOR LOCK RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR WINDOW SWITCH TO REAR OF VEHICLE) VIO/GRY WIRE VIO/YEL WIRE WHT/BLU WIRE WHT/DK BLU WIRE WHT/GRN WIRE YEL WIRE

1 2 3 4 B+ GND VOLT AJAR SW SIG APPROXIMATELY 150 MM FROM BREAKOUT TO WINDOW MOTOR) B+ GND BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/DK GRN WIRE BLK/GRY WIRE BLK/LT GRN WIRE BRN WIRE BRN/WHT WIRE BRN/YEL WIRE CHILD SECURITY LOCK DISABLE RELAY COMPUTER DATA LINES SYSTEM FROM BREAKOUT TO WINDOW MOTOR) FUSE 71 GRN WIRE GRN/GRY WIRE GRY WIRE GRY/BLK WIRE GRY/LT GRN WIRE HOT AT ALL TIMES IGNITION MODE SWITCH KEYLESS ENTRY CONTROL MODULE (RIGHT KICK PANEL) LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR WINDOW SWITCH LOW REF (7) SIG (6) LOW REF (6) SIG (8) LOW REF (8 SIG (7) NETWORK BUS 4 PASSENGER DOOR LATCH ASSEMBLY RED/WHT WIRE RIGHT REAR DOOR LATCH ASSEMBLY SERIAL DATA SW MODE CTRL LOW REF UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO WIRE VIO/BLK WIRE VIO/YEL WIRE WHT/DK BLU WIRE WHT/LT GRN WIRE WHT/YEL WIRE

2500 2501 COMPUTER DATA LINES SYSTEM 7493 7494 COMPUTER DATA LINES SYSTEM A/C SENS SIG ACCELERATOR PEDAL POSITION SENSOR (LEFT SIDE OF DASH) APP SENS SIG 1 APP SIG BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/LT GRN WIRE BLK/VIO WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CHECK ENG IND CTRL COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM CRUISE CONTROL SYSTEM DK BLU WIRE DK BLU/BRN WIRE DK BLU/GRN WIRE DK BLU/GRY WIRE DK BLU/LT GRN WIRE DK BLU/WHT WIRE ENG RLY CTRL IGN 1 VOLT ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) EVAPORATIVE EMISSION VENT SOLENOID VALVE (UNDER LEFT REAR OF VEHICLE) FAN RLY CTRL FUEL LVL SEN SIG FUEL LVL SENS LO REF FUEL PRES SENS SIG FUEL PUMP FUEL PUMP RLY CTRL GRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRY WIRE HI SER DATA BUS (+) HI SER DATA BUS (-) IGN 1 VOLT B+ PDL POS LOW REF IGN STARTER RLY CTRL LEVEL SENSOR ASSEMBLY (IN FUEL TANK) LOW REF LT GRN WIRE LT GRN/DK BLU WIRE LT GRN/VIO WIRE PDL POS LOW REF RED/BRN WIRE RED/GRN WIRE RED/LT GRN WIRE SNSR SIG SOLENOID CTRL SOLENOID CTRL SOLENOID CTRL CRUISE/ETC/TCC BRAKE SIG STARTING/CHARGING SYSTEM VIO/DK BLU WIRE VIO/GRY WIRE VIO/LT GRN WIRE VIO/YEL WIRE WAKE-UP SER DATA WHT WIRE WHT/DK BLU WIRE WHT/RED WIRE YEL WIRE YEL/RED WIRE YEL/WHT WIRE