Buick LaCrosse III (2016-2019) low spd gmlan serial data 2 Wiring diagrams

BATT POS VOLT BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/DK GRN WIRE BLK/GRY WIRE BLK/VIO WIRE CHASSIS CONTROL MODULE (FRONT OF FLOOR CONSOLE) COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/RED WIRE DK BLU/YEL WIRE DK GRN/DK BLU WIRE DK GRN/RED WIRE DK GRN/VIO WIRE DRIVER INFORMATION CENTER DISPLAY FUSE 35 GROUND GRY/LT GRN WIRE HIGH SPD SER DATA (+) (1) HIGH SPD SER DATA (+) 2 HIGH SPD SER DATA (-) 1 LIN DATA BUS 26 HOT AT ALL TIMES IGN 1 VOLT INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LIN DATA BUS 26 LOGIC LOW SPD GMLAN SERIAL DATA 2 NCA WIRE RED/BLU WIRE REMOTE PRNDM ENABLE SENS 1 BETA SIGNAL SENS 2 ALPHA SIGNAL SENS 2 BETA SIGNAL SENS 2 LOW REF SENS 2 VOLT REF SHIFTER POSITION SW 1 RETURN SW 1 SIGNAL SW 2 RETURN SW 2 SIGNAL TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LEVER KNOB TRANSMISSION SHIFT LEVER POSITION INDICATOR VIO/BLK WIRE VIO/BRN WIRE VIO/DK BLU WIRE VIO/DK GRN WIRE VIO/YEL WIRE VOLT REF WAKEUP SER DATA 2 WHT WIRE WHT/DK GRN WIRE WHT/GRY WIRE YEL/BRN WIRE YEL/DK BLU WIRE

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

ACC WAKEUP SERIAL DATA AMBIENT LIGHT/ SUNLOAD SENSOR BATT POS VOLT BATTERY POSITIVE VOLTAGE BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BODY CONTROL MODULE (UNDER FLOOR CONSOLE) DATA BUS 1 DATA BUS 11 DATA BUS 15 DATA BUS 4 DATA LINK CONNECTOR (LOWER LEFT SIDE OF DASH) DK BLU WIRE DK BLU/VIO WIRE DK BLU/YEL WIRE DK GRN WIRE DK GRN/BRN WIRE DK GRN/DK BLU WIRE DK GRN/GRY WIRE DK GRN/VIO WIRE DK GRN/WHT WIRE DK GRN/YEL WIRE FUSE 20 FUSE 25 FUSE 34 FUSE 5 GROUND GRY/LT GRN WIRE HI SPD GMLAN SERIAL DATA (+) 8 HI SPD GMLAN SERIAL DATA (+) 9 HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (2) HI SPD GMLAN SERIAL DATA (-) 9 LOW SPD GMLAN SERIAL DATA HOT AT ALL TIMES IMMOBILIZER CONTROL MODULE INSTRUMENT PANEL FUSE BLOCK LEFT REAR WINDOW SWITCH LIN SERIAL LIN SERIAL DATA BUS 1 LIN SERIAL DATA BUS 11 LIN SERIAL DATA BUS 15 LIN SERIAL DATA BUS 2 LIN SERIAL DATA BUS 3 LIN SERIAL DATA BUS 4 LOGIC SUNROOF MOTOR LOGIC WINDSHIELD WIPER MOTOR LOW SPD GMLAN SERIAL DATA LOW SPD GMLAN SERIAL DATA 2 LT GRN WIRE RED/BRN WIRE RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE RIGHT REAR WINDOW SWITCH SERIAL DATA COMM ENABLE SERIAL DATA GATEWAY MODULE (NEAR BODY CONTROL MODULE) VIO WIRE VIO/YEL WIRE WHT WIRE WHT/DK BLU WIRE WHT/GRN WIRE WHT/GRY WIRE

BLU/GRN WIRE BLU/GRY WIRE DATA DATA BUS 10 DATA BUS 12 DATA BUS 2 DATA BUS 5 DK BLU WIRE DK BLU/VIO WIRE DK BLU/YEL WIRE DK GRN/BLK WIRE DK GRN/DK BLU WIRE DK GRN/WHT WIRE DK GRN/YEL WIRE GRY/LT GRN WIRE GRY/VIO WIRE HEAD-UP DISPLAY HI SPD GMLAN SERIAL DATA (+) 9 INFO DISPLAY MODULE INFOTAINMENT CONTROL TOUCHPAD INSTRUMENT CLUSTER LOGIC LIN SERIAL LO SPD GMLAN LOGIC LOW SPD GMLAN LOW SPD GMLAN SERIAL DATA 2 LT GRN WIRE MEDIA DISC PLAYER MOST CONTROL MOST SERIAL RADIO RIGHT STEERING WHEEL CONTROLS SWITCH LOGIC SERIAL DATA 2 SERIAL DATA COMM ENABLE STEERING WHEEL AIR BAG COIL TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE VIO/YEL WIRE W/ INFOTAINMENT CONTROL TOUCHPAD W/ INFOTAINMENT CONTROL TOUCHPAD W/ ONSTAR W/O ONSTAR WHT WIRE WHT/DK BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/VIO WIRE

BATT POS VOLT BLK WIRE BLU WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY DRIVER OBJECT DETECTION IND DRIVER OUTSIDE REAR VIEW MIRROR GLASS DRIVER OUTSIDE REAR- VIEW MIRROR DRIVER SIDE OBJECT DETECTION LED SIG (1) FUSE 40 GROUND GRY WIRE GRY/LT GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LEFT SIDE OBJECT SENSOR MODULE LOGIC LOW SPD GMLAN SERIAL DATA 2 LOW SPEED GMLAN SERIAL DATA LT GRN WIRE PASS SIDE OBJECT DETECTION LED SIG (1) PASSENGER OBJECT DETECTION IND PASSENGER OUTSIDE REAR VIEW MIRROR PASSENGER OUTSIDE REAR VIEW MIRROR GLASS RED/DK GRN WIRE RIGHT SIDE OBJECT SENSOR MODULE

BATTERY POS VOLT BLK WIRE BLK/DK BLU WIRE BLK/GRY WIRE BODY CONTROL MODULE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CTRL DATA 1 (+) DK BLU WIRE DK BLU/YEL WIRE DK GRN WIRE DRIVER INFORMATION CENTER DISPLAY FRONT PARKING AID DISPLAY CTRL FRONT PARKING LEFT CORNER SENS FRONT PARKING LEFT MID SENS FRONT PARKING RIGHT CORNER SENS FRONT PARKING RIGHT MID SENS FUSE 40 GROUND GRY WIRE GRY/LT GRN WIRE HI SPD GMLAN SERIAL DATA (-) (2) HOT AT ALL TIMES IND DIM INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK INSTRUMENT PANEL MULTI- FUNCTION SWITCH LEFT FRONT SIDE PARKING ASSIST SENSOR LEFT MIDDLE FRONT PARKING ASSIST SENSOR LEFT MIDDLE REAR PARKING ASSIST SENSOR LEFT OUTER FRONT PARKING ASSIST SENSOR LEFT OUTER REAR PARKING ASSIST SENSOR LEFT REAR SIDE PARKING ASSIST SENSOR LF SUPPLEMENTAL OBJECT SENS SIG LOGIC LOW REFERENCE LOW SPD GMLAN SERIAL DATA LOW SPD GMLAN SERIAL DATA 2 LR CORNER OBJECT SENS SIG LR MIDDLE OBJECT SENS SIG LR SUPPLEMENTAL OBJECT SENS SIG LT GRN WIRE OBJECT SENS CTRL PARALLEL PARKING ASSIST DISABLE SWITCH PARK ASSIST DISABLE SWITCH PARKING ASSIST CONTROL MODULE PARKING ASSIST IND PARKING ASSIST DISABLE SWITCH REAR PARK ASSIST DISABLE SIGNAL REAR PARK ASSIST LED DISABLE SIG RED WIRE RED/DK GRN WIRE RF SUPPLEMENTAL OBJECT SENS SIG RIGHT FRONT SIDE PARKING ASSIST SENSOR RIGHT MIDDLE FRONT PARKING ASSIST SENSOR RIGHT MIDDLE REAR PARKING ASSIST SENSOR RIGHT OUTER FRONT PARKING ASSIST SENSOR RIGHT OUTER REAR PARKING ASSIST SENSOR RIGHT REAR SIDE PARKING ASSIST SENSOR RR CORNER OBJECT SENS SIG RR MIDDLE OBJECT SENS SIG RR SUPPLEMENTAL OBJECT SENS SIG SERIAL SERIAL DATA COMMUNICATION ENABLE VIO/GRY WIRE VIO/WHT WIRE WHT WIRE WHT/DK BLU WIRE WHT/GRY WIRE YEL WIRE YEL/DK BLU WIRE YEL/GRY WIRE YEL/VIO WIRE YEL/WHT 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

BATT POS VOLT BLK WIRE BODY CONTROL MODULE (UNDER FRONT CONSOLE) BRN/GRY WIRE COMPUTER DATA LINES SYSTEM DC DC BATT 2/AWD FUSE DELAY SWITCH DK BLU WIRE DK GRN/BRN WIRE DRIVER INFORMATION CENTER DISPLAY FRT WPR FUSE FUSE 20 FUSE 41 GRY WIRE GRY/LT GRN WIRE GRY/VIO WIRE HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LIN SERIAL DATA BUS 1 LOGIC LOW SPD GMLAN SERIAL DATA 2 OFF MIST POWER SUPPLY TRANSFORMER RED/BRN WIRE RED/DK BLU WIRE RED/YEL WIRE SPLY VOLT 1 UNDERHOOD FUSE BLOCK W/O START/STOP SYSTEM W/ START/STOP SYSTEM WASH PUMP FUSE WASHER SWITCH WHT WIRE WINDSHIELD WASHER PUMP WINDSHIELD WASHER PUMP RELAY WINDSHIELD WASHER RLY CTRL WINDSHIELD WASHER SW SIG WINDSHIELD WIPER MOTOR WINDSHIELD WIPER MTR RLY COIL CTRL WINDSHIELD WIPER SW HI SIG WINDSHIELD WIPER SW LO REF WINDSHIELD WIPER SW LOW SIG WINDSHIELD WIPER/WASHER SWITCH WIPER SWITCH YEL WIRE

BANK 1 SENS 1 BANK 1 SENS 2 BANK 2 SENS 1 BANK 2 SENS 2 BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/VIO WIRE BLU/WHT WIRE BRN WIRE BRN/DK BLU WIRE BRN/LT GRN WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CTRL IND DK BLU/GRY WIRE DK BLU/VIO WIRE DK BLU/WHT WIRE DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE GAUGE ENGINE COOLANT TEMPERATURE IND ENGINE OIL IND ENGINE OIL LEVEL SWITCH ENGINE OIL PRESSURE SENSOR FUEL GAUGE FUEL IND FUEL LEVEL SENS SIG FUEL PRESSURE SENSOR FUSED SPLY 4 GRY/LT GRN WIRE GRY/WHT WIRE INSTRUMENT CLUSTER KNOCK SENS LIN BUS 21 LOGIC LOW REF (1) LOW REF 2 LOW SPD GMLAN SERIAL DATA 2 LT GRN/DK BLU WIRE LT GRN/VIO WIRE LT GRN/YEL WIRE MALFUNCTION IND NCA WIRE OIL LEVEL SW SIG OIL PRESSURE PRIMARY SEC SENS LOW REF SENS SIG THROTTLE THROTTLE SIG VIO/DK BLU WIRE VIO/GRY WIRE VIO/WHT WIRE WHT/BLK WIRE WHT/BRN WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/BRN WIRE YEL/DK BLU WIRE YEL/WHT WIRE