Buick LaCrosse III (2016-2019) logic Wiring diagrams

ACTIVE SAFETY CONTROL MODULE BATT POS VOLT BATT POST VOLT BLK WIRE BLK/WHT WIRE BLU/GRY WIRE COMPUTER DATA LINES SYSTEM DK BLU/VIO WIRE DK BLU/YEL WIRE DRIVER INFORMATION CENTER DISPLAY FRONT OBJECT SENS CTRL 2 FRONT OBJECT SENS SPLY VOLT 2 FUSE 40 GRN WIRE GRY WIRE GRY/LT GRN WIRE GRY/VIO WIRE HI SPD GMLAN SER DATA (-) 8 HI SPD GMLAN SERIAL DATA (+) 4 HI SPD GMLAN SERIAL DATA (+) 8 HI SPD GMLAN SERIAL DATA (-) (2) HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK INSTRUMENT PANEL MULTI- FUNCTION SWITCH LANE DEPARTURE WARNING DISABLE SW SIG LANE DEPARTURE WARNING DISABLE SWITCH LANE DEPARTURE WARNING IND LANE DEPARTURE WARNING IND CTRL LO SPD GMLAN SERIAL DATA LOGIC LONG RANGE RADAR SENSOR MODULE (FRONT OF VEHICLE, BEHIND GRILLE) LOW SPD GMLAN SERIAL DATA 2 LT GRN WIRE PARK ASSIST IND PARKING ASSIST CONTROL MODULE RED/DK GRN WIRE SERIAL DATA COMM ENABLE SIG GND WHT WIRE WHT/DK BLU WIRE WHT/GRY WIRE

BLK WIRE CENTER CONSOLE FLOOD LAMP COMPUTER DATA LINES SYSTEM DATA BUS 3 DATA BUS 4 DK GRN/GRY WIRE DK GRN/YEL WIRE DRIVER DOOR LATCH ASSEMBLY DRIVER INFORMATION CENTER DISPLAY GRY WIRE GRY/BRN WIRE GRY/LT GRN WIRE INSTRUMENT CLUSTER LEFT INSTRUMENT PANEL ACCENT LAMP LEFT REAR DOOR ACCENT LAMP LEFT REAR DOOR HANDLE FLOOD LAMP LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR WINDOW SWITCH LF DR AJAR SW SIG LOGIC LOGIC DRIVER WINDOW MOTOR LOW SPD GMLAN SER DATA 2 LR DR AJAR SW SIG MIDDLE INSTRUMENT PANEL ACCENT LAMP NCA WIRE RIGHT INSTRUMENT PANEL ACCENT LAMP RIGHT REAR DOOR ACCENT LAMP RIGHT REAR DOOR HANDLE FLOOD LAMP WHT/BRN WIRE WHT/YEL WIRE

BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DATA BUS 3 DATA BUS 4 DK GRN/GRY WIRE DK GRN/YEL WIRE DRIVER DOOR COURTESY LAMP FRONT OVERHEAD CONSOLE ASSEMBLY GRN WIRE GRY WIRE GRY/BRN WIRE LEFT INSTRUMENT PANEL COURTESY LAMP LEFT ROOF RAIL DOME/ READING LAMPS LEFT SUNSHADE LEFT SUNSHADE MIRROR LAMP LOGIC NCA WIRE PASSENGER DOOR COURTESY LAMP PASSENGER DOOR LATCH ASSEMBLY PASSENGER WINDOW MOTOR RF DR AJAR SW SIG RIGHT INSTRUMENT PANEL COURTESY LAMP RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR WINDOW SWITCH RIGHT ROOF RAIL DOME/ READING LAMPS RIGHT SUNSHADE RIGHT SUNSHADE MIRROR LAMP RR DR AJAR SW SIG WHT WIRE WHT/BRN WIRE WHT/YEL WIRE

BACKLIGHT DIMMING CTRL BATT POS VOLT DOME LAMP OFF INDICATOR CTRL BLK WIRE BLK/DK BLU WIRE BLK/YEL WIRE BLU/GRY WIRE BODY CONTROL MODULE CIGARETTE LIGHTER RECEPTACLE COMPUTER DATA LINES SYSTEM DIMMER SW LOW REF DIMMER SW SIG DIMMING CTRL DK BLU/RED WIRE DK GRN/GRY WIRE DRIVER DOOR LOCK SWITCH DRIVER SEAT MEMORY SWITCH FUSE 22 GND LOCAL INTERCONNECT NETWORK DATA BUS 4 GRY WIRE HEAD-UP DISPLAY SWITCH HOT AT ALL TIMES IGNITION MODE SWITCH INFOTAINMENT CONTROL TOUCHPAD INSTRUMENT PANEL FUSE BLOCK INTERIOR REAR COMPARTMENT LID UNLATCH SWITCH LED BACKLIGHT DIMMING CTRL LED DIMMING SIG LOGIC LOW REF PARK BRAKE CONTROL SWITCH PASSENGER DOOR LOCK SWITCH PASSENGER WINDOW SWITCH RED/WHT WIRE SEAT MEMORY CONTROL MODULE STOP/ START SELECT SWITCH W/ EXPRESS UP/DOWN POWER OPERATED WINDOW W/ MEMORY W/ MEMORY W/O MEMORY W/O MEMORY W/ MEMORY WHT WIRE YEL WIRE YEL/GRY WIRE

BLK WIRE BLK/YEL WIRE BLU/GRY WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU/RED WIRE DK GRN/BLK WIRE DRIVER DOOR LATCH ASSEMBLY DRIVER DOOR LOCK SWITCH FRONT OVERHEAD CONSOLE ASSEMBLY GREEN LED CTRL GRY WIRE GRY/GRN WIRE GRY/LT GRN WIRE HAZARD WARNING SWITCH HEADLAMP SWITCH HEATED STEERING WHEEL IND INSIDE STEERING WHEEL) LEFT STEERING WHEEL CONTROLS SWITCH LOGIC LOW SPD GMLAN PASSENGER DOOR LATCH ASSEMBLY PASSENGER DOOR LOCK SWITCH PNK SW LED CTRL WIRE RED LED CTRL WIRE RIGHT STEERING WHEEL CONTROLS SWITCH SERIAL DATA 2 SIG STATUS STEERING WHEEL HEATING CONTROL MODULE TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE VIO WIRE WHT WIRE WHT/VIO WIRE YEL WIRE YEL/GRY WIRE

BLK WIRE COMPUTER DATA LINES SYSTEM CTRL DK GRN/BLK WIRE DK GRN/DK BLU WIRE DK GRN/GRY WIRE DK GRN/YEL WIRE DRIVER WINDOW/ LOGIC OUTSIDE REAR VIEW MIRROR SWITCH FRONT VIEW CAMERA GARAGE DOOR OPENER GROUND DISTRIBUTION SYSTEM HVAC CONTROLS IND INFO DISPLAY MODULE INSTRUMENT CLUSTER INSTRUMENT PANEL MULTI- FUNCTION SWITCH LANE DEPARTURE WARNING LIGHT IND LEFT REAR LOGIC WINDOW SWITCH LOCAL INTERCONNECT NETWORK BUS 10 LOCAL INTERCONNECT NETWORK BUS 12 LOCAL INTERCONNECT NETWORK BUS 26 LOCAL INTERCONNECT NETWORK BUS 9 LOGIC LT GRN WIRE PARKING ASSIST CONTROL MODULE PARKING ASSIST IND RIGHT REAR LOGIC WINDOW SWITCH TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LEVER KNOB TRANSMISSION SHIFT LEVER POSITION INDICATOR W/ PARK ASSIST, LANE KEEP ASSIST WHT WIRE WHT/VIO WIRE YEL WIRE

AM/FM 1 AUXILIARY AUDIO INPUT BATT POS VOLT BLK WIRE BLU WIRE BLU/BLK WIRE BRN WIRE BRN/BLU WIRE COAX COAX BU GPS COAX GY GPS/CELL COAX PK GPS COAX VT GPS/CELL COMPUTER DATA LINES SYSTEM DK GRN/DK BLU WIRE FM/RFR GMLAN SERIAL DATA 2 GRN WIRE GRN/BLK WIRE GRN/YEL WIRE GRY/LT GRN WIRE GRY/VIO WIRE GY COAX GPS COAX HD/XM CU LEFT STEERING WHEEL CONTROLS SWITCH LF AUDIO LOW REF LF SPEAKER (-) CTRL 1 LF SPEAKER SIG (-) 1 LOGIC LR SPEAKER (+) CTRL LR SPEAKER SIG (-) 1 MEDIA DISC PLAYER MOST CONTROL MOST SERIAL DATA (+) NAVIGATION ANTENNA SIGNAL SPLITTER (W/ CELL) (CENTER OF REAR WINDOW SHELF) NAVIGATION ANTENNA SIGNAL SPLITTER (W/O CELL) (CENTER OF REAR WINDOW SHELF) NCA WIRE RADIO RADIO ANTENNA REAR ROOF ANTENNA RED/VIO WIRE RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER REMOTE ENABLE SIG I RF SPEAKER (-) CTRL 1 RF SPEAKER SIG (-) 1 RFR RR SPEAKER (+) CTRL RR SPEAKER SIG (-) 1 SERIAL DATA BUS 10 USB USB BK USB USB W/ ONSTAR W/O ONSTAR W/ NAVIGATION W/O NAVIGATION WHT WIRE WHT/LT GRN WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE

BATT POS VOLT BLK WIRE BLU WIRE BLU/BLK WIRE BLU/GRY WIRE BRN/BLU WIRE BRN/DK BLU WIRE COMPUTER DATA LINES SYSTEM DISPLAY DISPLAY SIG + DK BLU WIRE DK GRN/DK BLU WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE FUSE 16 FUSE 38 GRN WIRE GRN/BLK WIRE GRN/YEL WIRE GRY/GRN WIRE HOT AT ALL TIMES INFO DISPLAY MODULE INFOTAINMENT INSTRUMENT PANEL FUSE BLOCK LEFT FRONT DOOR SPEAKER LEFT FRONT TWEETER SPEAKER LEFT REAR WINDOW SHELF SPEAKER LOGIC LOW SPEED GMLAN LVDS MEDIA DISC PLAYER RADIO CONTROLS RED/BRN WIRE RED/LT BLU WIRE RED/VIO WIRE RED/YEL WIRE REPLICATED SERIAL DATA 2 SERIAL DATA BUS 10 SERIAL DATA BUS 5 SIG VIO/DK BLU WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

AJAR SW SIG 1 B+ VOLT BLK WIRE BODY CONTROL MODULE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/YEL WIRE DRIVER INFORMATION CENTER DISPLAY EXTERIOR REAR COMPARTMENT LID UNLATCH SWITCH FUSE 41 20 GRY/LT GRN WIRE GRY/YEL WIRE HANDLE SW OPEN SIG HIGH SPEED GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK INTERIOR REAR COMPARTMENT LID UNLATCH SWITCH INTERIOR RELEASE SIG LOGIC LOW SPD GMLAN SERIAL DATA 2 LOW SPEED GMLAN SERIAL DATA (+) 1 MTR RELEASE CTRL REAR CLOSR FUSE REAR COMPARTMENT LID LATCH REAR COMPARTMENT LID UNLATCH RELAY RED/BRN WIRE UNDERHOOD FUSE BLOCK VIO/DK BLU WIRE VIO/GRY WIRE W/ STOP/START SYSTEM W/O STOP/START SYSTEM WHT WIRE YEL WIRE YEL/DK BLU WIRE

AUDIO/VIDEO INPUT ADAPTER BACKWARD BK LVDS BK USB BLK WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DRIVER SEATBACK VIDEO DISPLAY FORWARD/ FUSE 39 FUSE 42 GRY/GRN WIRE GRY/VIO WIRE GY LVDS HEADPHONE HOT AT ALL TIMES HUMAN MACHINE INTERFACE CONTROL MODULE INSTRUMENT PANEL FUSE BLOCK LOGIC LOGIC AUXILIARY AUDIO INPUT LOGIC INFO DISPLAY MODULE LT BLU/VIO WIRE LT GRN/WHT WIRE LT GRN/YEL WIRE LVDS LVDS GY LVDS LVDS LVDS MEDIA DISC PLAYER NCA WIRE PASSENGER SEATBACK VIDEO DISPLAY RED/BLU WIRE RED/DK BLU WIRE RED/LT BLU WIRE RED/VIO WIRE SERIAL DATA 2 SERIAL DATA BUS 10 USB USB SERIAL DATA USB USB VIDEO+ VOLUME- WH LVDS WHT/GRN WIRE WHT/LT GRN WIRE WHT/VIO WIRE