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

"A" PILLAR) BLK WIRE BLU WIRE BRN WIRE DOWN DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT FRONT VERTICAL MOTOR (UNDER RIGHT FRONT CORNER OF DRIVER SEAT) DRIVER SEAT HORIZONTAL MOTOR (UNDER DRIVER'S SEAT) DRIVER SEAT LUMBAR SUPPORT PUMP DRIVER SEAT LUMBAR SUPPORT VALVE ASSEMBLY DRIVER SEAT REAR VERTICAL MOTOR (UNDER RIGHT REAR CORNER OF DRIVER SEAT) DRIVER SEAT RECLINE MOTOR (LOWER RIGHT SIDE OF DRIVER SEAT BACK) DRVR/SEAT CIRCUIT BREAKER GND UP MTR GRN WIRE GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) LOGIC RECLINE FWD RECLINE RWD RED WIRE RWD VIO WIRE WHT WIRE YEL WIRE YEL/WHT WIRE

BLK WIRE BLK/YEL WIRE BODY RC IGN FUSE BRN WIRE CALL DRIVER OUTSIDE REARVIEW MIRROR (IF EQUIPPED) EMERGENCY EMERGENCY IND GRN LED WIRE GRN WIRE GRY WIRE HOT W/ IGNITION MAIN RELAY ENERGIZED IGN VOLT TELEMATICS BUTTON ASSEMBLY INSIDE REARVIEW MIRROR KEYPAD GREEN LED KEYPAD RED LED WIRE KEYPAD SIG KEYPAD SPLY VOLT LOGIC LOW REF SIG LT GRN/WHT WIRE MIRROR DIMMING ONSTAR ONSTAR IND PHONE IND RED LED WIRE RED WIRE SPLY VOLT TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO WIRE VIO/BLK WIRE W/ REARVIEW CAMERA WHT WIRE WHT/BLK WIRE YEL WIRE YEL/WHT WIRE

BLK WIRE BRN WIRE BRN/BLU WIRE BRN/VIO WIRE COMPUTER DATA LINES SYSTEM DRIVER BACK SEAT HEATING ELEMENT (DRIVER'S SEAT BACK) DRIVER CUSHION SEAT BLOWER MOTOR (UNDER CENTER OF DRIVER CUSHION) DRIVER CUSHION SEAT HEATING ELEMENT (DRIVER'S SEAT CUSHION) DRV SEAT VENT MTR CTRL PASS SEAT VENT MTR CTRL FRONT SEAT HEATING CONTROL MODULE (BELOW FRONT CENTER OF DRIVER SEAT) GRN/BLU WIRE GRN/VIO WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED HTD ST CO DR FUSE HTD ST DR FUSE IGN 1 VOLT LIN BUS 2 LOGIC MOTOR CTRL PASSENGER BACK SEAT HEATING ELEMENT (FRONT PASSENGER'S SEAT BACK) PASSENGER CUSHION SEAT BLOWER MOTOR (UNDER FRONT PASSENGER SEAT CUSHION) PASSENGER CUSHION SEAT HEATING ELEMENT (FRONT PASSENGER'S SEAT CUSHION) RED WIRE RED/GRY WIRE RED/YEL WIRE SEAT MASS FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO/BLK WIRE VIO/WHT WIRE W/O ADAPTIVE CRUISE CONTROL W/ ADAPTIVE CRUISE CONTROL WHT WIRE WHT/BRN 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 DIMMIMG 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

2-WAY POWER SEAT PASSENGER SEAT ADJUSTER SWITCH 7 8 9 10 11 12 PHASE B 8-WAY POWER SEAT BCM 3 MAIN FUSE FUSE BCM 7 BCM 4 FUSE FUSE BCM 8 FUSE BLK WIRE BLOWER MOTOR CONTROL MODULE BODY CONTROL MODULE BRN RED/ WIRE BRN WIRE BRN/BLU WIRE CENTER CONSOLE 1 ACCESSORY POWER RECEPTACLE CENTER CONSOLE 2 ACCESSORY POWER RECEPTACLE CENTER CONTROL COMPARTMENT ACCESSORY POWER RECEPTACLE DK BLU/WHT WIRE DK GRN/WHT WIRE DRIVER SEAT LUMBER SUPPORT PUMP DRIVER SEAT LUMBER SUPPORT VALVE ASSEMBLY DRIVER SEAT SEAT ADJUSTER MEMORY SWITCH CONTROL MODULE DRVR/SEAT CIRCUIT BREAKER FROM BATTERY FUSE BLOCK (DIAGRAM 1 OF 5) FROM DISPLAY FUSE (DIAGRAM 2 OF 5) FROM INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 2 OF 5) FRT/HVAC/ BLWR FUSE GND 120 VAC GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/GRN WIRE GRY/VIO WIRE INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) INVERTER CTRL ACCESSORY DC/AC POWER INVERTER MODULE (BELOW CENTER CONSOLE) LOGIC LOGIS/ MODE FUSE ONSTAR/ UHP FUSE ORG/ WIRE PASS/SEAT CIRCUIT BREAKER PHASE B POWER RECEPTACLE PWR OUTLET 1 FUSE PWR OUTLET 2 FUSE PWR/ OUTLETS FUSE RDO FUSE REAR COMPARTMENT LID UNLATCH RELAY RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RETAINED ACCESSORY POWER RELAY RIGHT STEERING CONTROL SWITCH STEERING WHEEL AIR BAG COIL TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE TO SPLICE TRANSMISSION SHIFT LEVER POSITION INDICATOR TRUNK FUSE VIO WIRE W/O W/ MEMORY MEMORY YEL RED/ WIRE YEL 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

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

1 2 3 4 5 6 7 8 9 10 11 12 BATT 1 2 3 4 5 6 7 8 9 10 11 12 GND AUDIO/VIDEO INPUT ADAPTER BK USB BLK WIRE BLU/VIO WIRE BRN WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM DISPLAY FUSE DRIVER SEAT HEADREST VIDEOS DISPLAY GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/VIO WIRE HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK LOGIC LOGIS/MODE FUSE LT RR AUD SIG RT AUX AUD SIG LT AUX AUD SIG AUX HI SIG BATT+ LVDS MEDIA DISC PLAYER MINI FUSE MOST CTRL SERIAL DATA NCA WIRE ONSTAR/ UHP FUSE PASSENGER SEAT HEADREST VIDEOS DISPLAY RDO FUSE RED/BLU WIRE RED/VIO WIRE RT RR AUD SIG RR AUD COM SIG AUX AUD COM SIG AUX LOW SIG USB USB GN WHT WIRE WHT/GRN WIRE WHT/VIO WIRE YEL WIRE