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

18 12 RR STATUS SIG LR STATUS SIG 2 18 LOCK CTRL (2) HEADLAMP HI 4 1 UNLOCK CTRL LOCK CTRL 2 4 19 15 POS VOLT LOCK SIG UNLOCK SIG 4 6 NETWORK BUS 3 AJAR SW SIG AJAR SW SIG 1 AMBIENT LIGHT/ SUNLOAD SENSOR (CENTER OF DASH) BCM 8 SIDE OF DASH) FUSE BLK WIRE BM RLY CTRL 25 27 16 RCDLR POWER RCDLR DATA TRANSMIT RCDLR GROUND BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN/LT GRN WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/VIO WIRE DK BLU/WHT WIRE DRIVER DOOR LATCH ASSEMBLY DRIVER DOOR LOCK SWITCH DRIVER WINDOW MOTOR (DRIVER'S DOOR) DRIVER WINDOW SWITCH GRN WIRE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/LT GRN WIRE GRY/WHT WIRE HEADLIGHTS SYSTEM HOOD AJAR SW SIG HOOD AJAR SWITCH (FRONT OF ENGINE COMPT) HORN RLY HORNS SYSTEM HOT AT ALL TIMES HVAC CONTROL MODULE HYBRID POWERTRAIN CONTROL MODULE HYBRID/EV BATTERY PACK (HYBRID) (RIGHT SIDE OF LUGGAGE COMPT) INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT LOCK RELAY CTRL NETWORK BUS 3 NETWORK BUS 4 PASSENGER DOOR LATCH ASSEMBLY PASSENGER DOOR LOCK SWITCH PPL RCDLR DATA RECEIVE RED/VIO WIRE SECURITY IND CTRL STARTER/GENERATOR CONTROL MODULE STATUS CTRL UNLOCK SIG VIO/GRY WIRE VIO/YEL WIRE WHT/VIO WIRE YEL WIRE YEL/LT GRN WIRE

4 6 NETWORK BUS 3 AJAR SW SIG ACTR RECEIVE SIG ACTR RTN ACTR SPLY VOLT ACTR TRANSMIT SIG AJAR SW SIG ANT LO REF (2) ANT LO REF (5) ANT SIG (1) ANT LO REF (1) ANT SIG (2) ANT SIG (5) BLK WIRE BLK/BRN WIRE BLK/LT GRN WIRE BLK/YEL WIRE BLU WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM LOGIC DK BLU WIRE DK BLU/VIO WIRE DRIVER DOOR LATCH ASSEMBLY DRIVER EXTERIOR DOOR HANDLE SWITCH DRIVER INFORMATION CENTER DISPLAY SECURITY IND DRIVER WINDOW MOTOR (DRIVER'S DOOR) DRIVER WINDOW SWITCH GMLAN SERIAL DATA GRN WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/DK BLU WIRE GRY/YEL WIRE INSTRUMENT CLUSTER KEYLESS ENTRY ANTENNA KEYLESS ENTRY CONTROL MODULE (RIGHT KICK PANEL) LEFT REAR EXTERIOR DOOR HANDLE ASSEMBLY LEFT REAR EXTERIOR DOOR HANDLE SWITCH LT GRN WIRE LT GRN/WHT WIRE LT GRN/YEL WIRE NETWORK BUS 3 ORG/ WIRE PACK) PASS DR UNLATCH SW SIG DRV DR UNLATCH SW SIG PASSENGER DOOR HANDLE KEYLESS ENTRY ANTENNA PASSENGER EXTERIOR DOOR HANDLE SWITCH PASSENGER WINDOW MOTOR (FRONT PASSENGER'S DOOR) REAR FASCIA KEYLESS ENTRY ANTENNA (IF EQUIPPED) (BEHIND REAR BUMPER) RED WIRE REMOTE CONTROL DOOR LOCK RECEIVER (ON PASSENGER SIDE C-PILLAR) RIGHT REAR EXTERIOR DOOR HANDLE ASSEMBLY RIGHT REAR EXTERIOR DOOR HANDLE SWITCH STATUS CTRL UNLOCK SIGNAL VIO WIRE VIO/GRY WIRE WHT/GRN WIRE WHT/VIO WIRE YEL WIRE YEL/DK BLU WIRE

18 12 RR STATUS SIG LR STATUS SIG 2 18 LOCK CTRL (2) HEADLAMP HI 4 1 UNLOCK CTRL LOCK CTRL 2 4 19 15 POS VOLT LOCK SIG UNLOCK SIG 4 6 NETWORK BUS 3 AJAR SW SIG AJAR SW SIG 1 AMBIENT LIGHT/ SUNLOAD SENSOR (CENTER OF DASH) BCM 8 SIDE OF DASH) FUSE BLK WIRE BM RLY CTRL 25 27 16 RCDLR POWER RCDLR DATA TRANSMIT RCDLR GROUND BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN/LT GRN WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/VIO WIRE DK BLU/WHT WIRE DRIVER DOOR LATCH ASSEMBLY DRIVER DOOR LOCK SWITCH DRIVER WINDOW MOTOR (DRIVER'S DOOR) DRIVER WINDOW SWITCH GRN WIRE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/LT GRN WIRE GRY/WHT WIRE HEADLIGHTS SYSTEM HOOD AJAR SW SIG HOOD AJAR SWITCH (FRONT OF ENGINE COMPT) HORN RLY HORNS SYSTEM HOT AT ALL TIMES HVAC CONTROL MODULE HYBRID POWERTRAIN CONTROL MODULE HYBRID/EV BATTERY PACK (HYBRID) (RIGHT SIDE OF LUGGAGE COMPT) INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT LOCK RELAY CTRL NETWORK BUS 3 NETWORK BUS 4 PASSENGER DOOR LATCH ASSEMBLY PASSENGER DOOR LOCK SWITCH PPL RCDLR DATA RECEIVE RED/VIO WIRE SECURITY IND CTRL STARTER/GENERATOR CONTROL MODULE STATUS CTRL UNLOCK SIG VIO/GRY WIRE VIO/YEL WIRE WHT/VIO WIRE YEL WIRE YEL/LT GRN WIRE

4 6 NETWORK BUS 3 AJAR SW SIG ACTR RECEIVE SIG ACTR RTN ACTR SPLY VOLT ACTR TRANSMIT SIG AJAR SW SIG ANT LO REF (2) ANT LO REF (5) ANT SIG (1) ANT LO REF (1) ANT SIG (2) ANT SIG (5) BLK WIRE BLK/BRN WIRE BLK/LT GRN WIRE BLK/YEL WIRE BLU WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM LOGIC DK BLU WIRE DK BLU/VIO WIRE DRIVER DOOR LATCH ASSEMBLY DRIVER EXTERIOR DOOR HANDLE SWITCH DRIVER INFORMATION CENTER DISPLAY SECURITY IND DRIVER WINDOW MOTOR (DRIVER'S DOOR) DRIVER WINDOW SWITCH GMLAN SERIAL DATA GRN WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/DK BLU WIRE GRY/YEL WIRE INSTRUMENT CLUSTER KEYLESS ENTRY ANTENNA KEYLESS ENTRY CONTROL MODULE (RIGHT KICK PANEL) LEFT REAR EXTERIOR DOOR HANDLE ASSEMBLY LEFT REAR EXTERIOR DOOR HANDLE SWITCH LT GRN WIRE LT GRN/WHT WIRE LT GRN/YEL WIRE NETWORK BUS 3 ORG/ WIRE PACK) PASS DR UNLATCH SW SIG DRV DR UNLATCH SW SIG PASSENGER DOOR HANDLE KEYLESS ENTRY ANTENNA PASSENGER EXTERIOR DOOR HANDLE SWITCH PASSENGER WINDOW MOTOR (FRONT PASSENGER'S DOOR) REAR FASCIA KEYLESS ENTRY ANTENNA (IF EQUIPPED) (BEHIND REAR BUMPER) RED WIRE REMOTE CONTROL DOOR LOCK RECEIVER (ON PASSENGER SIDE C-PILLAR) RIGHT REAR EXTERIOR DOOR HANDLE ASSEMBLY RIGHT REAR EXTERIOR DOOR HANDLE SWITCH STATUS CTRL UNLOCK SIGNAL VIO WIRE VIO/GRY WIRE WHT/GRN WIRE WHT/VIO WIRE YEL WIRE YEL/DK BLU WIRE

BLK WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/VIO WIRE DRIVER PASSENGER FOLDING SWITCH GRY WIRE GRY/VIO WIRE HOT AT ALL TIMES LOGIC LT GRN WIRE MIR EWL FR FUSE OUTSIDE REARVIEW MIRROR SWITCH PASSENGER DRIVER RED WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO WIRE WHT WIRE YEL WIRE YEL/GRY WIRE YEL/LT GRN WIRE YEL/WHT WIRE

BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/GRY WIRE BLK/LT GRN WIRE BLK/VIO WIRE BLU/YEL WIRE CNRK POS SENS SIG CRANKSHAFT POSITION SENSOR (RIGHT SIDE OF ENGINE) DK BLU/VIO WIRE DK BLU/WHT WIRE ECT SENS SIG ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE SENSOR (BEHIND EXHAUST MANIFOLD) ENGINE OIL PRESSURE SWITCH (FRONT OF ENGINE) EXHAUST BANK 1 SIG EXHAUST CAMSHAFT POSITION SENSOR (RIGHT REAR OF ENGINE BELOW CAMSHAFT COVER) GRY/DK BLU WIRE GRY/YEL WIRE HIGH CTRL HIGH PRESSURE FUEL PUMP IC 1 CTRL IC 2 CTRL IC 3 CTRL IC 4 CTRL INTAKE BANK 1 SIG INTAKE CAMSHAFT POSITION SENSOR (LEFT FRONT CORNER OF CYLINDER HEAD) LOW CTRL LOW REF LT BLU WIRE LT GRN WIRE LT GRN/DK BLU WIRE NCA WIRE OIL PRESSURE SW SIG SPARK PLUG VIO/BLK WIRE VIO/DK BLU WIRE VIO/GRY WIRE YEL WIRE YEL/DK BLU WIRE YEL/VIO WIRE

AUTO DISCONNECT CONTROL AUX WKUP SERIAL DATA AUXILIARY/ ELECTRIC TRANSMISSION FLUID PUMP BLK WIRE BLK/DK BLU WIRE BLK/YEL WIRE BRAKE POSITION BRK POS SNSR LOW REF BRK POS SNSR SIG BRN WIRE BRN/LT GRN WIRE COMPUTER DATA LINES SYSTEM COOLANT PUMP RELAY COIL CONTROL DISCONNECT SUPPLY VOLTAGE DK BLU WIRE DK BLU/VIO WIRE DK BLU/WHT WIRE DRIVER MOTOR CONTROL MODULE 1 STARTER/GENERATOR CONTROL MODULE FUSE GRY WIRE GRY/BLK WIRE GRY/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED HYBRID/EV BATTERY PACK (RIGHT SIDE OF LUGGAGE COMPT) HYBRID/EV POWERTRAIN CONTROL MODULE LT GRN WIRE LT GRN/DK BLU WIRE LT GRN/WHT WIRE MM TO BODY HARNESS) NCA WIRE ORG/ WIRE PNK WIRE PPL RED WIRE RED/YEL WIRE RELAY RESOLVER COSINE SIGNAL DRAIN WIRE RESOLVER MOTOR DRAIN WIRE RESOLVER MOTOR NEGATIVE RESOLVER SINE SIGNAL DRAIN WIRE STARTER/GENERATOR THREE PHASE MOTOR TEMP DRAIN WIRE TRANS AUX PMP FUSE TRANSMISSION AUXILIARY OIL PUMP RLY CTRL U PHASE V PHASE VIO WIRE VIO/YEL WIRE W PHASE WHT WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE

BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE BRN/GRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/GRY WIRE DK BLU/VIO WIRE DK BLU/WHT WIRE DK BLU/YEL WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE OIL LEVEL SWITCH (LOWER RIGHT FRONT SIDE OF ENGINE, MOUNTED TO OIL PAN) FUEL INJECTORS (TOP OF ENGINE) GRY/DK BLU WIRE LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/DK BLU WIRE LT GRN/GRY WIRE LT GRN/WHT WIRE NCA WIRE PPL PPL/WHT WIRE SECONDARY AIR INJECTION BANK 1 SOLENOID VALVE (LEFT OF EXHAUST PORT) SECONDARY AIR INJECTION BANK 2 SOLENOID VALVE (LEFT OF EXHAUST PORT) SPARK PLUG VIO/DK BLU WIRE VIO/GRY WIRE VIO/LT GRN WIRE WHT/BRN WIRE WHT/GRY WIRE WHT/LT GRN WIRE

BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/GRY WIRE BLK/LT GRN WIRE BLK/VIO WIRE BRN WIRE BRN/DK BLU WIRE DK BLU WIRE DK BLU/GRY WIRE DK BLU/VIO WIRE DK BLU/WHT WIRE GRY/DK BLU WIRE GRY/YEL WIRE LT GRN WIRE LT GRN/BRN WIRE LT GRN/DK BLU WIRE NCA WIRE SPARK PLUG VIO/BLK WIRE VIO/DK BLU WIRE VIO/LT GRN WIRE WHT/DK BLU WIRE WHT/LT GRN WIRE YEL WIRE YEL/DK BLU WIRE YEL/VIO WIRE

BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/GRY WIRE BLK/LT GRN WIRE BLK/VIO WIRE BRN WIRE BRN/DK BLU WIRE CAMSHAFT POS EXHAUST SNSR 1 CAMSHAFT POS INTAKE SNSR 2 CAMSHAFT POS EXHAUST SNSR 2 CAMSHAFT PHASER INTAKE SOL 1 CAMSHAFT POS EXHAUST SNSR LO REF 1 CAMSHAFT POS INTAKE SNSR LO REF 2 COOLANT TEMP SNSR LO REF DK BLU WIRE DK BLU/GRY WIRE DK BLU/VIO WIRE DK BLU/WHT WIRE ENG COOLANT TEMP SNSR SIG OIL PRESSURE SWITCH SIGNAL ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) ENGINE OIL PRESSURE SWITCH (LOWER FRONT OF ENGINE) GRY/DK BLU WIRE GRY/YEL WIRE HI VOLT CTRL CYL 4 HI VOLT CTRL CYL 5 HI VOLT CTRL CYL 2 LT GRN WIRE LT GRN/BRN WIRE LT GRN/DK BLU WIRE VIO/BLK WIRE VIO/BRN WIRE VIO/DK BLU WIRE VIO/LT GRN WIRE WHT/DK BLU WIRE WHT/LT GRN WIRE YEL WIRE YEL/DK BLU WIRE YEL/VIO WIRE