Buick LaCrosse II (2009-2013) dk grn Wiring diagrams

3.6L 3.6L EXCEPT AUTOMATIC TRANSMISSION ASSEMBLY BLK WIRE BLU WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DK GRN WIRE ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) EXCEPT 3.6L 3.6L FUSE GRN WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE HOT AT ALL TIMES INSIDE REARVIEW MIRROR LEFT BACKUP LAMP LEFT TAIL LAMP LT GRN WIRE LT GRN/WHT WIRE PARK/NEUTRAL SIG REAR WINDOW SUNSHADE MODULE REARVIEW CAMERA RED WIRE RED/YEL WIRE RIGHT BACKUP LAMP RIGHT TAIL LAMP SIG A SIG B SIG C SIG P SUPPLY VOLT TRANS- MISSION INTERNAL MODE SWITCH TRANSMISSION CONTROL MODULE UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO/YEL WIRE WAKE UP SIG WHT LT GRN/ WIRE WHT WIRE WHT/GRY WIRE YEL WIRE

11 12 IG MODE SW CTRL LOW REF 21 20 W/ KEYLESS ENGINE START 3 4 PPL PPL ACC VOLT RUN/CRANK 1 VOLT 307 3287 HEADLIGHTS SYSTEM HORNS SYSTEM 664 94 EXTERIOR LIGHTS SYSTEM WIPER/WASHER SYSTEM ACC IND ACCESSORY LED SIGNAL LIGHTING CONTROL SW SIG AMBIENT LIGHT SENSOR SIGNAL SW SIG PPL ANTI-THEFT SYSTEM HEADLIGHTS SYSTEM BLK WIRE BLK/BRN WIRE BRAKE APPLY SENSOR SIGNAL LED BACKLIGHT DIMMING CTRL BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CRUISE CONTROL SYSTEM INTERIOR LIGHTS SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM EXTERIOR LIGHTS SYSTEM DOOR LOCKS SYSTEM DRIVER DR LK SW LOCK SIG FUSE FUSE (LOWER LEFT SIDE OF DASH) FUSE FUSE FUSE FUSE FUSE GRN WIRE GRN/GRY WIRE GRN/PPL WIRE GRY WIRE GRY/LT GRN WIRE GRY/WHT WIRE HDLP SW FLASH TO PASS SIG HORN SWITCH SIGNAL HEADLAMP OFF SIG HEADLAMP SW ON SIG HAZARD LED DIMMING SIGNAL HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM TRANSMISSIONS SYSTEM HOT AT ALL TIMES IGNITION KEY RESISTOR SIG IGNITION MODE SWITCH INSTRUMENT PANEL FUSE BLOCK INTERIOR LAMP DEFEAT SW SIG KEYLESS ENTRY CONTROL MODULE (RIGHT KICK PANEL) LT GRN WIRE LT GRN/WHT WIRE LT GRN/YEL WIRE NAVIGATION SYSTEM OFF/RUN/CRANK VOLT PPL HAZARD SW TURN RIGHT SIG WINDSHIELD WASHER SW SIG PPL PPL PPL PPL 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 PPL PPL W/O KEYLESS ENGINE START RED WIRE RED/BLK WIRE RED/BRN WIRE RED/LT GRN WIRE RED/VIO WIRE RED/WHT WIRE SHIFT INTERLOCK SYSTEM SOUND SYSTEMS START IND UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO WIRE VIO/BLK WIRE VIO/YEL WIRE WHT WIRE WINDSHIELD WIPER SW HI SIG WIPER/WASHER SYSTEM YEL WIRE YEL/LT GRN WIRE

12 24 HAZ SW LEFT TURN SIG HAZ SW RIGHT TURN SIG PPL 22 17 4 19 HEADLAMP SW PARK LP SIG HAZ LED DIMMING SIG B+ BRK APPLY SENS LO REF BLK WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE CENTER HIGH MOUNTED STOP LAMP COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/VIO WIRE DK BLU/WHT WIRE DK GRN WIRE FUSE GRN WIRE GRN/YEL WIRE GRY WIRE GRY/BRN WIRE GRY/YEL WIRE HAZARD SWITCH HEAD PARK AUTO HEADLAMP SWITCH HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 LEFT FRONT SIDE MARKER LAMP LEFT LICENSE PLATE LAMP LEFT PARK/ TURN SIGNAL LAMP LEFT REAR TURN SIGNAL LAMP LEFT TAIL LAMP LEFT TAIL/ STOP LAMP LEFT REAR SIDE MARKER LAMP LT BLU WIRE LT GRN WIRE LT GRN/RED WIRE LT GRN/VIO WIRE LT GRN/WHT WIRE OFF PPL RED WIRE RED/ LT BLU WIRE RED/BRN WIRE RED/DK GRN WIRE RED/LT GRN WIRE RED/WHT WIRE RIGHT LICENSE PLATE LAMP VIO/GRY WIRE W/ HID W/O HID WHT WIRE WHT/ DK BLU WIRE WHT/YEL WIRE

ACCESSORY VOLTAGE AJAR SW SIG AMBIENT LIGHT/ SUNLOAD SENSOR (CENTER OF DASH) BATT POS VOLT BLK WIRE BODY CONTROL MODULE (BCM) (LEFT SIDE OF DASH) BRN WIRE BRN/LT GRN WIRE BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DR LK CTRL DRV DR LK SW LK SIG DRV DR LK SW UNLK SIG DRV DR LK UNLK CTRL FUSE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE HDLP HI BEAM RLY CTRL HEADLIGHTS SYSTEM HOOD AJAR SW SIG HOOD AJAR SWITCH (FRONT OF ENGINE COMPT) HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES HVAC CONTROL MODULE INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 LK MTR STATUS SIG LR LK MTR STATUS SIG RR NETWORK BUS 4 POS VOLT PPL RED/WHT WIRE RIGHT REAR WINDOW SWITCH RUN/CRANK IGN 1 VOLT SECURITY IND CTRL UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO/BLK WIRE VIO/DK BLU WIRE VIO/GRY WIRE VIO/YEL WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 B+ SUPLY VOLT 1 2 3 4 5 6 7 8 LEFT REAR CORNER OBJECT SENSOR LEFT REAR MIDDLE OBJECT SENSOR 5060 2350 2555 COMPUTER DATA LINES SYSTEM BLK WIRE BLK/GRY WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE BRN/WHT WIRE DIM CTRL DK GRN WIRE FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES I/P MULTI-FUNCTION SWITCH LEFT MIDDLE REAR OBJECT SENSOR (LEFT SIDE OF REAR BUMPER) LEFT OUTER REAR OBJECT SENSOR (LEFT SIDE OF REAR BUMPER) LOW REFERENCE LOW SPEED GMLAN SERIAL DATA GROUND REAR PARK ASSIST DISABLE SIGNAL LT GRN WIRE PARKING ASSIST CONTROL MODULE (CENTER OF REAR PACKAGE SHELF) POWER DISTRIBUTION SYSTEM RED/LT GRN WIRE RIGHT MIDDLE REAR OBJECT SENSOR (RIGHT SIDE OF REAR BUMPER) RIGHT OUTER REAR OBJECT SENSOR UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) WHT WIRE YEL WIRE YEL/DK BLU WIRE YEL/VIO WIRE YEL/WHT WIRE

ACCESSORY VOLTAGE AJAR SW SIG AMBIENT LIGHT/ SUNLOAD SENSOR (CENTER OF DASH) BATT POS VOLT BLK WIRE BODY CONTROL MODULE (BCM) (LEFT SIDE OF DASH) BRN WIRE BRN/LT GRN WIRE BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DR LK CTRL DRV DR LK SW LK SIG DRV DR LK SW UNLK SIG DRV DR LK UNLK CTRL FUSE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE HDLP HI BEAM RLY CTRL HEADLIGHTS SYSTEM HOOD AJAR SW SIG HOOD AJAR SWITCH (FRONT OF ENGINE COMPT) HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES HVAC CONTROL MODULE INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 LK MTR STATUS SIG LR LK MTR STATUS SIG RR NETWORK BUS 4 POS VOLT PPL RED/WHT WIRE RIGHT REAR WINDOW SWITCH RUN/CRANK IGN 1 VOLT SECURITY IND CTRL UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO/BLK WIRE VIO/DK BLU WIRE VIO/GRY WIRE VIO/YEL WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

B(+) BLK WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN/YEL WIRE BUS 4 COMPUTER DATA LINES SYSTEM DK BLU/GRY WIRE DK BLU/VIO WIRE DK GRN WIRE DOOR LOCKS SYSTEM DOWN DRIVER WINDOW MOTOR (DRIVER'S DOOR) EXPRESS FUSE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/YEL WIRE HOT AT ALL TIMES LEFT REAR WINDOW MOTOR (LEFT REAR DOOR) LEFT REAR WINDOW SWITCH LF UP SIG LOCK OUT BUS 3 SWITCH LOGIC LOGIC DRIVER WINDOW SWITCH LR DOWN CTRL LR DR AJAR SW SIG LR UP CTRL LT GRN/BLK WIRE LT GRN/VIO WIRE LT GRN/WHT WIRE NETWORK BUS 3 NETWORK BUS 4 PASSENGER WINDOW MOTOR (FRONT PASSENGER'S DOOR) PASSENGER WINDOW SWITCH RED/DK BLU WIRE RED/VIO WIRE RED/WHT WIRE RF DOWN SIG RF DR AJAR SW SIG RF EXPRESS SIG RF UP SIG RIGHT FRONT WINDOW B+ SWITCH RIGHT REAR WINDOW MOTOR (RIGHT REAR DOOR) RIGHT REAR WINDOW SWITCH RR DOWN CTRL RR UP CTRL UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) UNLCK SIG VIO/GRY WIRE W/ MEMORY W/O MEMORY WHT/VIO WIRE YEL/BLK WIRE YEL/BLU WIRE

AIR BAG IND AIR BAG ON IND SEAT BELT ON IND BEN/ORG WIRE BETWEEN FOLLOWING PINS: 1-2, 3-4, 5-6, 7-8) BLK WIRE BLK/OEG WIRE BLK/ORG WIRE BRN WIRE BRN/ORG WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE FUSE GRN WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/ORG WIRE HOT AT ALL TIMES HOT IN ON OR START IGN 1 VOLT INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (BELOW CENTER CONSOLE) INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 LEFT FRONT IMPACT SENSOR (LEFT SIDE OF CROSSMEMBER) LO SPD GMLAN LOGIC LOW SPD GMLAN SERIAL DATA LOW SPEED GMLAN SERIAL DATA NCA WIRE ORG/ WIRE ORG/LT GRN WIRE ORG/VIO WIRE ORG/WHT WIRE ORG/YEL WIRE PASS AIR BAG ON IND PASS AIR BAG OFF IND PASSENGER AIR BAG OFF IND PASSENGER INSTRUMENT PANEL AIR BAG PASSENGER PRESENCE DETECTION MODULE (IF EQUIPPED) (UNDER FRONT PASSENGER'S SEAT) PNK WIRE RED WIRE RED/WHT WIRE RIGHT FRONT IMPACT SENSOR (RIGHT SIDE OF CROSSMEMBER) SEAT BELT IND SHORTING BAR STEERING WHEEL AIR BAG STEERING WHEEL AIR BAG COIL TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO WIRE VIO/WHT WIRE WHT WIRE WHT/ORG WIRE YEL WIRE YEL/BRN WIRE YEL/ORG WIRE

5-VOLT REF 1 BLK/BRN WIRE BLK/GRY WIRE BLK/LT GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/GRY WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE CONTROL MODULE (LEFT FRONT ENGINE CONTROL MODULE RELAY EXHAUST CAMSHAFT POSITION ACTUATOR SOLENOID VALVE EXHAUST SOLENOID (1) FUEL INJECTOR 1 FUEL INJECTOR 1 CTRL FUEL INJECTOR 1 CYND FUEL INJECTOR 2 FUEL INJECTOR 2 CTRL FUEL INJECTOR 2 CYND FUEL INJECTOR 3 FUEL INJECTOR 3 CTRL FUEL INJECTOR 3 CYND FUEL INJECTOR 4 FUEL INJECTOR 4 CTRL FUEL INJECTOR 4 CYND FUSE FUSE FUSE GRY/DK BLU WIRE GRY/YEL WIRE HOT AT ALL TIMES BATTERY FUSE BLOCK (TOP OF BATTERY) INTAKE SOLENOID (1) LOW REF LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/GRY WIRE LT GRN/WHT WIRE OF ENGINE COMPT) RED WIRE RED/WHT WIRE SIG GROUND TOP OF ENGINE) UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO/BRN WIRE VIO/DK BLU WIRE YEL WIRE