Buick LaCrosse II facelift (2013-2016) w/ adaptive cruise control Wiring diagrams

BLU WIRE BLU/YEL WIRE BREAKOUT TO EXTENSION HARNESS) COMM ENABLE DATA COM ENABLE DK BLU WIRE DK BLU/YEL WIRE ELECTRONIC BRAKE CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) GRN WIRE HS SERIAL DATA - LOW SPEED GMLAN PARKING BRAKE CONTROL MODULE (BEHIND LEFT REAR WHEEL LINER) REAR DIFFERENTIAL CLUTCH CONTROL MODULE (AWD) (MOUNTED TO REAR DIFFERENTIAL) SER DATA (+) 2 SER DATA (-) (1) SERIAL DATA VIO/YEL WIRE W/ ADAPTIVE CRUISE CONTROL W/O ADAPTIVE CRUISE CONTROL W/O CONTINUOUSLY VARIABLE REAL TIME DAMPING W/O CONTINUOUSLY VARIABLE REAL TIME DAMPING, AWD WHT WIRE WHT/BLU WIRE

BLU WIRE BLU/YEL WIRE BRN WIRE COMM ENABLE DATA COM ENABLE FRONTVIEW CAMERA MODULE (W/ LANE DEPARTURE WARNING, COLLISION ALERT) GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRY/VIO WIRE HS SERIAL DATA - HUMAN MACHINE INTERFACE CONTROL MODULE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (BELOW CENTER CONSOLE) LEFT HEADLAMP BALLAST LEFT HEADLAMP ASSEMBLY LEFT HEADLAMP HORIZONTAL MOTOR LINEAR INTERCONNECT NETWORK BUS 6 MOST CTRL MOST SER DATA (+) MULTI-AXIS ACCELERATION SENSOR (UNDER CENTER CONSOLE BETWEEN FRONT SEATS) NETWORK BUS 1 NETWORK BUS 5 NETWORK BUS 6 ORG/ WIRE RIGHT HEADLAMP BALLAST RIGHT HEADLAMP ASSEMBLY RIGHT HEADLAMP HORIZONTAL MOTOR SER DATA SER DATA (-) (1) SER DATA COMM ENABLE SUNROOF CONTROL MODULE (BEHIND ROOF CONSOLE) SUNROOF SUNSHADE MOTOR MODULE (REAR OF SUNROOF) VIO/YEL WIRE W/ ADAPTIVE CRUISE CONTROL W/O ADAPTIVE CRUISE CONTROL WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/VIO 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 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

BLK WIRE BLK/WHT WIRE BLU WIRE BRAKE BOOSTER PUMP MOTOR RELAY BRN WIRE COOLING DISTANCE SENSING CRUISE CONTROL MODULE FAN SPEED CONTROL RELAY GRY WIRE HORN ASSEMBLY IGNITION MAIN RELAY LEFT DAYTIME RUNNING LAMP, LEFT FRONT HOOD FOG AJAR LAMP SWITCH LEFT FRONT PARK LAMP (IF EQUIPPED) ACTIVE GRILL AIR SHUTTER ACTUATOR LEFT FRONT SIDE LEFT HEADLAMP MARKER BALLAST LAMP LEFT HEADLAMP HORIZONTAL MOTOR LEFT LEFT COOLING COOLING FAN FAN DIODE DIODE LOW SPEED COOLING FAN DIODE RIGHT DAYTIME RUNNING LAMP RIGHT FRONT FOG LAMP RIGHT FRONT PARK LAMP RIGHT FRONT SIDE MARKER LAMP RIGHT FRONT TURN SIGNAL LAMP RIGHT HEADLAMP ASSEMBLY RIGHT HEADLAMP BALLAST RIGHT HEADLAMP HORIZONTAL MOTOR RIGHT HEADLAMP MULTI-FUNCTION LED CONTROL MODULE RIGHT HIGH BEAM SOLENOID ACTUATOR RIGHT LOW BEAM HEADLAMP RIGHT RIGHT FRONT FRONT SIDE TURN MARKER SIGNAL LAMP LAMP W/ ADAPTIVE CRUISE CONTROL W/ HID W/O HID WINDSHIELD WASHER FLUID LEVEL SWITCH WINDSHIELD WASHER PUMP WINDSHIELD WASHER PUMP RELAY

BLK WIRE BLOWER MOTOR CONTROL MODULE BODY CONTROL MODULE BRN WIRE DRIVER BACK SEAT BLOWER MOTOR DRIVER CUSHION SEAT BLOWER MOTOR DRIVER DRIVER SEAT SEAT ADJUSTER LUMBAR SWITCH SUPPORT PUMP DRIVER LEFT REAR SEAT HAPTIC MOVEMENT MOTOR DRIVER RIGHT REAR SEAT HAPTIC MOVEMENT MOTOR DRIVER SEAT LUMBAR SUPPORT VALVE ASSEMBLY DRIVER WINDOW MOTOR FROM SPLICEPACK GRY/BLU WIRE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE LEFT REAR DRIVER WINDOW WINDOW SWITCH SWITCH PASSENGER BACK SEAT BLOWER MOTOR PASSENGER CUSHION SEAT BLOWER MOTOR PASSENGER PRESENCE MODULE PASSENGER SEAT ADJUSTER SWITCH PASSENGER SEAT LUMBAR SUPPORT PUMP PASSENGER SEAT LUMBAR SUPPORT VALVE ASSEMBLY PASSENGER WINDOW MOTOR RIGHT REAR SEAT COURTESY LAMP RIGHT REAR WINDOW SWITCH W/ 4 WAY MANUAL PASSENGER ADJUSTER SEAT W/ ADAPTIVE CRUISE CONTROL W/ CUSTOM INTERIOR PACKAGE LAMP W/ FRONT PASSENGER VENTILATED SEAT W/ MEMORY W/ MULTI-DIRECTIONAL POWER ADJUSTER PASSENGER SEAT W/O ADAPTIVE CRUISE CONTROL W/O MEMORY

1 2 3 4 5 6 7 8 9 10 GROUND BATT POST VOLT WARNING IND SERIAL DATA (+) SERIAL DATA (-) SERIAL DATA BLK WIRE BLU WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM DK BLU WIRE DRIVER INFORMATION CENTER DISPLAY ENABLE DISABLE SW SIG FRONTVIEW CAMERA MODULE GRN WIRE GRY/VIO WIRE GRY/WHT WIRE HOT AT ALL TIMES IND DIM CTRL INSTRUMENT CLUSTER INSTRUMENT PANEL MULTI-FUNCTION SWITCH 2 LANE DEPARTURE WARNING IND LANE DEPARTURE WARNING SWITCH LRR LDW FUSE RADIO RED/GRY WIRE SERIAL DATA SERIAL DATA LOGIC UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) W/ ADAPTIVE CRUISE CONTROL WHT WIRE WHT/BLU WIRE WHT/GRN WIRE