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

22 1 SERIAL DATA BATT POS VOLT AIR BAG COIL AUTO BCM 3 FUSE BLK WIRE BLK/DK BLU WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) CENTER CONSOLE MULTI-FUNCTION SWITCH COMPUTER DATA LINES SYSTEM CRUISE CONTROL, SOUND SYSTEMS DIMMER SWITCH DK BLU WIRE DOME LAMP SWITCH DRIVER DOOR LOCK SWITCH DRIVER SEAT MEMORY SWITCH (W/ MEMORY) FOG LAMP SWITCH GARAGE DOOR OPENER SUNROOF SUNSHADE GRN WIRE HDLP SW PARK LP SIG HEAD HEAD-UP DISPLAY SWITCH (IF EQUIPPED) HEADLAMP SWITCH HORN SWITCH HOT AT ALL TIMES IGNITION MODE SWITCH (W/ KEYLESS ENGINE INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) LED BACK LEFT FRONT DOME/ READING LAMPS LEFT STEERING WHEEL CONTROLS SWITCH LEFT TAILLAMP ASSEMBLY LIGHT CTRL SW REF LIGHT CTRL SW SIG LIGHT DIMMING CONTROL LOW REF LT GRN WIRE OFF ORG/VIO WIRE OUTSIDE REARVIEW MIRROR SWITCH (W/O MEMORY) PARK PARKING ASSIST ON/ OFF SWITCH (W/ REAR PARKING ASSIST) PARKING BRAKE CONTROL SWITCH (BEHIND LEFT REAR WHEEL LINER) PASSENGER DOOR LOCK SWITCH PASSENGER WINDOW SWITCH PNK WIRE REAR DOME READING LAMPS REAR WINDOW SUNSHADE SWITCH (IF EQUIPPED) RED/WHT WIRE RIGHT FRONT DOME/ READING LAMPS RIGHT STEERING WHEEL CONTROLS SWITCH SEAT MEMORY CONTROL MODULE (W/ MEMORY) (UNDER DRIVER'S SEAT) SERIAL DATA LOGIC STEERING WHEEL) SUNROOF SWITCH (IF EQUIPPED) SWITCH VIO WIRE W/ MEMORY W/O MEMORY YEL WIRE YEL/BLK WIRE

11 12 LOW REF SEAT SW SIG (1) BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLU WIRE BLU/GRN WIRE BLU/WHT WIRE BRN WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DOWN NETWORK BUS 8 DRIVER SENS SIG GMLAN SERIAL DATA GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GROUND GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/WHT WIRE HOT AT ALL TIMES LEFT POS CTRL LOGIC LOGIC PASSENGER WINDOW SWITCH LOW REF LT GRN WIRE LT GRN/BLK WIRE MIR EWL FR FUSE MOTOR COMM MTR COMM RIGHT POS CTRL NAVIGATION SYSTEM NETWORK BUS 8 ORG/ WIRE ORG/BLK WIRE OUTSIDE REARVIEW MIRROR SWITCH PASSENGER OUTSIDE REARVIEW MIRROR PASSENGER OUTSIDE REARVIEW MIRROR COURTESY LAMP PASSENGER OUTSIDE REARVIEW MIRROR GLASS PASSENGER OUTSIDE REARVIEW MIRROR LAMP ASSEMBLY PASSENGER OUTSIDE REARVIEW MIRROR MOTOR PASSENGER SIDE OBJECT DETECTION INDICATOR POSITION CTRL POSITIVE VOLT PPL PPL SENS SIG RED/VIO WIRE RIGHT TURN SIGNAL REPEATER LAMP SEAT MEMORY CONTROL MODULE (UNDER DRIVER'S SEAT) SENS SIG SENS SIG PASSENGER SET SIG UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) UP POS CTRL VIO WIRE WHT WIRE YEL/VIO WIRE

BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BLU/RED WIRE BLU/WHT WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE BRN/YEL WIRE DEFOGGER SYSTEM DK BLU WIRE DK BLU/WHT WIRE DRIVER OUTSIDE REARVIEW DRIVER OUTSIDE REARVIEW MIRROR DRIVER OUTSIDE REARVIEW MIRROR COURTESY LAMP DRIVER OUTSIDE REARVIEW MIRROR LAMP ASSEMBLY DRIVER OUTSIDE REARVIEW MIRROR MOTOR DRIVER SEAT MEMORY SWITCH DRIVER SIDE OBJECT DETECTION INDICATOR GRN/BLU WIRE GRN/WHT WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/YEL WIRE LAMP SUPPLY VOLT LEFT TURN SIGNAL REPEATER LAMP LT GRN WIRE MEM MIRROR DIMMING MIRROR GLASS MIRRORS SYSTEM NAVIGATION SYSTEM ORG/BLK WIRE VIO WIRE VIO/GRY WIRE WHT WIRE YEL WIRE YEL/WHT WIRE

BLK WIRE BLK/BLU WIRE BLU/GRN WIRE BLU/VIO WIRE BRN WIRE BRN/VIO WIRE BRN/WHT WIRE DOWN DOWN FWD DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT LUMBAR SUPPORT PUMP DRIVER SEAT MEMORY SWITCH GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GRY/BLK WIRE GRY/GRN WIRE MEM MEM SEAT SW SET SIG MEM SW LOW REF MEM SEAT SW SIG (1) RED/YEL WIRE RIGHT REAR HAPTIC SEAT MTR CTRL LEFT REAR HAPTIC SEAT MTR CTRL RWD RWD UP USED) VERTICAL MTR POS SNSR SIG RECLINE MTR POS SNSR SIG VIO WIRE WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/WHT 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 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

3 OF 5) A/C CLUTCH FUSE A/C COMPRESSOR CLUTCH RELAY ACTIVE GRILLE AIR SHUTTER ACTUATOR (IF EQUIPPED) AIR QUALITY SENSOR (IF EQUIPPED) AUXILIARY BLOWER MOTOR CONTROL MODULE AUXILIARY HEATER COOLANT PUMP RELAY (2.4L) BCM 1 AIR BAG FUSE FUSE BCM 2 FUSE BDY RC IGN FUSE BLK WIRE BODY CONTROL MODULE BPIM IGN FUSE CABIN HTR COOL PMP FUSE COOL COOLING FAN HIGH SPEED RELAY DISPLAY FUSE DLIS DLC FUSE FUSE ECM FUSE ECM IGN FUSE IP RC IGN FUSE ENGINE CONTROL MODULE ENGINE CONTROLS IGNITION RELAY ENGINE HVAC CONTROL CONTROL MODULE MODULE FROM AFL BATT FUSE (DIAGRAM 1 OF 5) FROM BATTERY FUSE BLOCK (DIAGRAM 1 OF 5) FROM BODY CONTROL MODULE (DIAGRAM 5 OF 5) FROM MGU CLT PUMP FUSE (DIAGRAM 2 OF 5) FRONT FOG LAMP RELAY FRT WIPER FUSE FUSE GRN/VIO WIRE GRY WIRE HEADLAMP HIGH BEAM RELAY HEADLAMP LOW BEAM RELAY REAR DEFOGGER RELAY HORN RELAY HVAC TO CONTROL ACCESSORY MODULE DC/AC POWER INVERTER MODULE (DIAGRAM 3 OF 5) HVAC/ ACDC INV FUSE CNTRL FUSE IGNITION IGNITION COIL 2 COIL 4 IGNITION COIL 6 IGNITION MAIN RELAY INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INJ EVEN FUSE INSIDE REARVIEW REARVIEW MIRROR CAMERA INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) IPC FUSE MGU CLT PUMP FUSE MIL IGN FUSE OF BATTERY) PASSENGER AIR BAG DISABLED INSTRUMENT INDICATOR CLUSTER PASSENGER PRESENCE MODULE PUMP RELAY (DIAGRAM 2 OF 5) REAR HVAC/ BLWR FUSE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE SAIR PUMP FUSE SAIR SOL FUSE SECONDARY AIR INJECTION PUMP RELAY (2.4L CALIFORNIA) SECONDARY AIR INJECTION SOLENOID VALVE RELAY (2.4L CALIFORNIA) START/ GENERATOR COOLANT PUMP RELAY (2.4L) STARTER/ GENERATOR CONTROL MODULE HYBRID/ EV BATTERY PACK TO IGNITION DATA LINK SWITCH CONNECTOR (DIAGRAM 5 OF 5) TO LOGIS/MODE FUSE (DIAGRAM TO MIR EWL FR FUSE (DIAGRAM 5 OF 5) TO SEAT MASS FUSE (DIAGRAM 4 OF 5) TO SPLICE TO WINDSHIELD WASHER TRANS AUX PUMP FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/WHT WIRE WHT WIRE WINDSHIELD WINDSHIELD WIPER WASHER RELAY PUMP RELAY WINDSHIELD WIPER SPEED CONTROL RELAY

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