Buick LaCrosse II facelift (2013-2016) gry Wiring diagrams

1 2 3 4 5 6 7 8 9 10 11 12 13 14 B+ GND AUTOMATIC TRANSMISSION ASSEMBLY BCM 1 FUSE BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BCM) (LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CONTROL SOLENOID DRIVER INFORMATION CENTER (DIC) ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) FUSE GMLAN SERIAL DATA BUS + GND OSS OSS RANGE HIGH LOW SIG P GRN WIRE GRY WIRE GRY/VIO WIRE HDLP SW HDLPS OFF SIG CTRL HI SPD GMLAN SER DATA (+) HI SPD GMLAN SER DATA (+) HI SPD GMLAN SER DATA (-) HOT AT ALL TIMES HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) HOT W/ IGNITION MAIN RELAY ENERGIZED IGN IGN 1 VOLT WAKEUP SERIAL DATA HI SPD GMLAN SER DATA (-) INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) ISS ISS HIGH LOW LOGIC GMLAN LOW REF P/N PARK/ NEUTRAL SIG GMLAN SERIAL DATA BUS- PC 1 SOLENOID PC 2 SOLENOID PC 3 SOLENOID PC 4 SOLENOID PC 5 SOLENOID POWER DISTRIBUTION SYSTEM PRESSURE CONTROL (PC) SOLENOID VALVE 1 PRESSURE CONTROL (PC) SOLENOID VALVE 2 PRESSURE CONTROL (PC) SOLENOID VALVE 3 PRESSURE CONTROL (PC) SOLENOID VALVE 4 PRESSURE CONTROL (PC) SOLENOID VALVE 5 RAP RELAY COIL CTRL RAP RLY COIL CTRL RED WIRE RED/LT GRN WIRE RED/WHT WIRE SHIFT SOLENOID (SS) VALVE 1 SHIFT SOLENOID (SS) VALVE 2 SS 1 SS 2 TCC SOLENOID TCM BATT FUSE TCM FSC IGN TFP 1 TFP 3 TFP 4 TFP 5 TFT TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID VALVE TRANSMISSION CONTROL MODULE (TCM) TRANSMISSION FLUID PRESSURE SWITCH TRANSMISSION FLUID TEMPERATURE SENSOR TRANSMISSION INPUT SHAFT SPEED SENSOR (ISS) TRANSMISSION INTERNAL MODE SWITCH (IMS) TRANSMISSION MANUAL SHIFT SWITCH TRANSMISSION OUTPUT SHAFT SPEED SENSOR (OSS) TRANSMISSION SHIFT LEVER TRNS TRNS RANGE RANGE SIG B SIG A TRNS TRNS RANGE SIG C VALVE ASSEMBLY VIO WIRE VIO/BLK WIRE VIO/YEL WIRE WHT WIRE WHT/GRY WIRE YEL WIRE YEL/BLK WIRE

20 26 B+ GROUND BATTERY BATTERY CURRENT SENSOR (IN FRONT OF BATTERY) BATTERY FUSE BLOCK (TOP OF BATTERY) BLK WIRE BLK/VIO WIRE BLU/VIO WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE CHARGE IND CHARGE IND CTRL COMPUTER DATA LINES SYSTEM CURRENT SENSOR SIG CURRENT SENSOR SUPPLY VOLTAGE DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) FUSE 6 GENERATOR GENERATOR FIELD DUTY CYCLE SIG GMLAN SERIAL DATA GRN WIRE GRY WIRE HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) FUSE 69 INSTRUMENT CLUSTER LOGIC LOW REF RED WIRE RED/YEL WIRE SERIAL DATA STARTER MOTOR VIO/YEL WIRE WHT/YEL WIRE

APPLY SW SIG RELEASE SW SIG BLK WIRE BLU WIRE BLU/BLK WIRE BLU/VIO WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM 6107 6108 DRIVER INFORMATION CENTER DISPLAY EPB FUSE GRN WIRE GRY WIRE GRY/RED WIRE HI SPD GMLAN - HI SPD GMLAN - HI SPD GMLAN - SUPPLY VOLTAGE SERIAL DATA HOT AT ALL TIMES INSTRUMENT CLUSTER LOGIC LOW SPD GMLAN PARK BRAKE CONTROL SWITCH (ON PARK BRAKE ASSEMBLY) PARK IND PARKING BRAKE CONTROL MODULE (BEHIND LEFT REAR WHEEL LINER) RED WIRE RED/VIO WIRE SERIAL DATA UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/RED WIRE

1 2 3 4 5 6 7 8 9 10 11 12 B+ GND SW LOW REF BLK WIRE BLU WIRE BRN WIRE CLOSE COMPUTER DATA LINES SYSTEM DK BLU WIRE EXPRESS CLOSE EXPRESS OPEN GRN WIRE GRY WIRE HOT AT ALL TIMES INTERCONNECT BUS 1 SW DAT 1 LOGIC LT BLU WIRE RED/GRY WIRE RED/WHT WIRE SUNROOF CONTROL MODULE (BEHIND ROOF CONSOLE) SUNROOF FUSE SUNROOF SUNSHADE MOTOR MODULE (REAR OF SUNROOF) SUNROOF SUNSHADE SWITCH SUNROOF SWITCH SW SIG UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) YEL WIRE

BLK WIRE BLU/VIO WIRE BRN/YEL WIRE BUS 4 COMPUTER DATA LINES SYSTEM DK BLU/GRY WIRE DK BLU/VIO WIRE DOOR LOCKS SYSTEM DOWN DRIVER WINDOW MOTOR (DRIVER'S DOOR) DRIVER WINDOW SWITCH EXPRESS EXPRESS STATUS SIG GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES ILLUMINATION INDICATOR LEFT FRONT LEFT REAR LEFT REAR WINDOW MOTOR (LEFT REAR DOOR) LEFT REAR WINDOW SWITCH LOCKOUT INDICATOR LOGIC LR DOWN CTRL LR DR AJAR SW SIG LR UP CTRL LT GRN/BLK WIRE LT GRN/GRY WIRE LT GRN/YEL WIRE MIR EWL FR FUSE NETWORK 3 DOWN NETWORK BUS 3 PASSENGER WINDOW MOTOR (FRONT PASSENGER'S DOOR) PASSENGER WINDOW SWITCH RED/BLU WIRE RED/VIO WIRE RED/WHT WIRE RF DOWN SIG RF DR AJAR SW SIG RF EXPRESS SIG RF UP SIG RIGHT FRONT RIGHT REAR 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 UP VIO/GRY WIRE WDO FRT FUSE WDO RR FUSE WHT/VIO WIRE WINDOW LOCK SWITCH WINDOW SWITCH YEL/BLK WIRE YEL/DK BLU WIRE

AUXILIARY AUDIO INPUT BATT + BDY RC IGN FUSE BLK WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BUS 10 NETWORK BUS 5 NETWORK CAMERA SHIELD CAMERA SIG (-) CAMERA SIG 2 COAX COMPUTER DATA LINES SYSTEM DISPLAY DISPLAY SIG + EXTENSION GMLAN LOW SPD GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GROUND GRY WIRE GRY/VIO WIRE GRY/YEL WIRE HOT W/ IGNITION RELAY ENERGIZED HUMAN MACHINE INTERFACE CONTROL MODULE IGN 1 VOLT INFO DISPLAY MODULE LOGIC LOW REF MOST CTRL NAVIGATION NAVIGATION DISPLAY SIG NCA WIRE NETWORK BUS 5 RADIO CONTROLS REARVIEW CAMERA RED WIRE RED/BLU WIRE RED/VIO WIRE SERIAL DATA SERIAL DATA (-) (1) SPLY VOLT UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) USB VIO WIRE VIO/BLK WIRE VOICE AUD SIG WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/VIO WIRE YEL WIRE

1 2 SERIAL DATA (-) SERIAL DATA (+) AM/FM AUX AUDIO COM SIG AUX DET SIG BATT + BLK WIRE BLK/YEL WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/WHT WIRE BUS 12 COAX COMPUTER DATA LINES SYSTEM CTRL GMLAN SERIAL DATA GRN WIRE GRN/BLU WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/VIO WIRE HANG UP IND DIMMING INSTRUMENT CLUSTER LED CTRL LEFT STEERING WHEEL CONTROLS SWITCH LOGIC LOW REF MOST CTRL NCA WIRE NETWORK NETWORK BUS 10 ORG/ WIRE ORG/VIO WIRE PNK 10 4 5 6 WIRE PNK WIRE RADIO RED/BLU WIRE RED/VIO WIRE RIGHT RIGHT STEERING WHEEL CONTROLS SWITCH SEEK + MUTE SEEK+ VOL+ SERIAL DATA SIG SOURCE SPEAK SIG STEERING STEERING WHEEL AIR BAG COIL VIO WIRE VOICE LEFT VOICE SIG VOL (-) WHEEL SW WHT/GRN WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE

AUXILIARY AUDIO INPUT BATT + BDY RC IGN FUSE BLK WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BUS 10 NETWORK BUS 5 NETWORK CAMERA SHIELD CAMERA SIG (-) CAMERA SIG 2 COAX COMPUTER DATA LINES SYSTEM DISPLAY DISPLAY SIG + EXTENSION GMLAN LOW SPD GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GROUND GRY WIRE GRY/VIO WIRE GRY/YEL WIRE HOT W/ IGNITION RELAY ENERGIZED HUMAN MACHINE INTERFACE CONTROL MODULE IGN 1 VOLT INFO DISPLAY MODULE LOGIC LOW REF MOST CTRL NAVIGATION NAVIGATION DISPLAY SIG NCA WIRE NETWORK BUS 5 RADIO CONTROLS REARVIEW CAMERA RED WIRE RED/BLU WIRE RED/VIO WIRE SERIAL DATA SERIAL DATA (-) (1) SPLY VOLT UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) USB VIO WIRE VIO/BLK WIRE VOICE AUD SIG WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/VIO WIRE YEL WIRE

1 2 SERIAL DATA (-) SERIAL DATA (+) AM/FM AUX AUDIO COM SIG AUX DET SIG BATT + BLK WIRE BLK/YEL WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/DK BLU WIRE BRN/WHT WIRE BUS 12 COAX COAX 1 2 3 4 5 6 7 8 9 COMPUTER DATA LINES SYSTEM CTRL DK BLU WIRE DK BLU/BLK WIRE GMLAN SERIAL DATA GRN WIRE GRN/BLU WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/VIO WIRE HANG UP IND DIMMING INSTRUMENT CLUSTER LED CTRL LEFT STEERING WHEEL CONTROLS SWITCH LOGIC LOW REF LT FT SPKR 1+ LT FT SPKR SIG 1- LT GRN WIRE LT GRN/BLK WIRE LT RR SPKR LT RR SPKR SIG - MOST CTRL NCA WIRE NETWORK NETWORK BUS 10 ORG/ WIRE ORG/VIO WIRE PNK 10 4 5 6 WIRE PNK WIRE RADIO RED/BLU WIRE RED/VIO WIRE RIGHT RIGHT STEERING WHEEL CONTROLS SWITCH RT FT SPKR 1+ RT FT SPKR SIG 1- RT RR SPKR RT RR SPKR SIG - SEEK SEEK+ VOL+ SERIAL DATA SIG SOURCE MUTE SPEAK SIG STEERING STEERING WHEEL AIR BAG COIL VIO WIRE VOICE LEFT VOICE SIG VOL (-) WHEEL SW WHT WIRE WHT/GRN WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE

AIR BAG FUSE AIR BAG IND AIR BAG OFF IND AIR BAG ON IND SEAT BELT ON IND BLK WIRE BLK/ORG WIRE BLU/YEL WIRE BRN WIRE BRN/ORG WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE FUSE GND SERIAL DATA GRN WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BLU WIRE GRY/ORG WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (BELOW CENTER CONSOLE) INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) LEFT FRONT IMPACT SENSOR (LEFT SIDE OF CROSS MEMBER) LEFT TAILLAMP ASSEMBLY LO SPD GMLAN LOGIC LOW SPD GMLAN SERIAL DATA LOW SPEED GMLAN SERIAL DATA LT GRN WIRE NCA WIRE ORG/ WIRE ORG/GRN 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 DISABLED INDICATOR PASSENGER INSTRUMENT PANEL AIR BAG PASSENGER PRESENCE DETECTION MODULE (UNDER FRONT PASSENGER'S SEAT) PNK WIRE PPL RED WIRE RED/WHT WIRE RIGHT FRONT IMPACT SENSOR (RIGHT SIDE OF CROSS MEMBER) SEAT BELT IND SERIAL DATA (-) SERIAL DATA (+) SHORTING BAR STEERING WHEEL AIR BAG STEERING WHEEL AIR BAG COIL TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO WIRE VIO/GRY WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/ORG WIRE YEL WIRE YEL/ORG WIRE