Buick LaCrosse II (2009-2013) red/brn Wiring diagrams

7 2 TRUNK LP CTRL INADVERTENT PWR CTRL BATT POS VOLT BLK WIRE BLOCK, LEFT TAIL LAMP) BODY CONTROL MODULE (LEFT SIDE OF DASH) CENTER CONSOLE COMPARTMENT CENTER CONSOLE COMPARTMENT LAMP COMPUTER DATA LINES SYSTEM COURTESY LAMP COURTESY LP SW SIG CRUISE CONTROL, SOUND SYSTEMS DIMMER SWITCH DRIVER DOOR COURTESY PASSENGER DOOR COURTESY FOG LAMP SWITCH FRONT DOME/ READING LAMPS FUSE FUSE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/LT GRN WIRE HEADLAMP SWITCH HOT AT ALL TIMES INSTRUMENT ILLUMINATION CIRCUIT INSTRUMENT PANEL COMPARTMENT LAMP INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT FUSE SIDE OF DASH) INTR LP CTRL INTR LP DEFEAT SW SIG LAMP LAMP LAMP LAMP SWITCH LED AMBIENT LIGHTING CTRL LEFT REAR DOOR COURTESY LEFT SUNSHADE MIRROR LIFT GATE AJAR SW SIG LIGHTING CTRL SW SIG LIGHTING CTRL SW REF LT GRN/GRY WIRE NETWORK BUS 3 NETWORK BUS 4 ORG/ WIRE READING LAMPS REAR COMPARTMENT COURTESY LAMP REAR COMPARTMENT LID LATCH (IN TRUNK LID) RED WIRE RED/BRN WIRE RED/DK GRN WIRE RED/LT GRN WIRE RIGHT INSTRUMENT PANEL RIGHT REAR DOOR COURTESY RIGHT SUNSHADE MIRROR LAMP VIO/BRN WIRE VIO/GRY WIRE WHT WIRE WHT/BRN WIRE WHT/YEL WIRE YEL WIRE

ACCESSORY VOLT BLK WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRAKE APPLY SENS LOW REF BRAKE APPLY SENS SUPPLY VOLTAGE BRAKE APPLY SENSOR SIGNAL BRAKE PEDAL POSITION SENSOR (NEAR TOP OF ACCELERATOR PEDAL ASSEMBLY) COMPUTER DATA LINES DK BLU WIRE FUSE HI SPEED GMLAN SERIAL DATA BUS - HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) KEY CAPTURE SOLENOID ACTUATOR (W/O KEYLESS ENGINE START SWITCH) KEY CAPTURE/ COLUMN LOCK SHIFT POSITION SIG PARK POSITION SWITCH RED/BRN WIRE SWITCH SYSTEM TRANSMISSION SHIFT LEVER VIO/YEL WIRE W/ KEYLESS ENGINE W/O KEYLESS ENGINE WHT WIRE WHT/VIO WIRE

3.0L, 3.6L 2.4L BATTERY BATTERY FUSE BLOCK (TOP OF BATTERY) BODY CONTROL MODULE BRAKE BOOSTER PUMP MOTOR RELAY CONTROL SOLENOID VALVE ASSEMBLY DK BLU WIRE DRIVER PASSENGER WINDOW WINDOW MOTOR MOTOR DRIVER SEAT POWER LUMBAR STEERING SUPPORT CONTROL SWITCH MODULE (IF EQUIPPED) ELECTRONIC BRAKE CONTROL MODULE ENGINE CONTROL MODULE EVAPORATIVE EMISSION VENT SOLENOID VALVE FUEL AUDIO PUMP AMPLIFIER CONTROL (PREMIUM MODULE AUDIO) FUSE FUSE 1 FUSE 2 FUSE FUSE GENERATOR HEADLAMP CONTROL MODULE (IF EQUIPPED) LEFT HEADLAMP LEFT HEADLAMP HORIZONTAL MOTOR (IF EQUIPPED) LEFT REAR WINDOW SWITCH LT GRN WIRE PARKING ELECTRONIC BRAKE BRAKE CONTROL CONTROL MODULE MODULE POWER STEERING CONTROL MODULE (IF EQUIPPED) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/DK BLU WIRE RED/DK GRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT HEADLAMP RIGHT HEADLAMP HORIZONTAL MOTOR (IF EQUIPPED) RIGHT REAR WINDOW SWITCH SEAT SEAT HEATING MEMORY CONTROL CONTROL MODULE MODULE STARTER MOTOR STARTER RELAY SUNROOF CONTROL MODULE (IF EQUIPPED) SUNROOF SUNSHADE MOTOR MODULE (IF EQUIPPED) TO IGNITION MAIN RELAY (DIAGRAM 2 OF 5) FUSE TO INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 2 OF 5) TO INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 3 OF 5) TO REAR BODY FUSE BLOCK (DIAGRAM 4 OF 5) UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) W/ W/O MEMORY MEMORY

3 OF 5) FUSE 3.0L, 3.6L 2.4L 3.6L 5 OF 5) AIR QUALITY SENSOR (IF EQUIPPED) BLK WIRE BODY CONTROL MODULE BRN WIRE CONTROL SOLENOID VALVE ASSEMBLY COOLING FAN LOW SPEED RELAY DK BLU WIRE ENGINE CONTROLS IGNITION RELAY ENGINE HVAC CONTROL CONTROL MODULE MODULE FROM BATTERY FUSE BLOCK (DIAGRAM 1 OF 5) FROM ENGINE CONTROL MODULE RELAY (DIAGRAM 2 OF 5) FRONT FOG LAMP RELAY FUEL PUMP CONTROL MODULE FUSE FUSE (DIAGRAM FUSE FUSE FUSE FUSE FUSE GRY WIRE HEADLAMP HIGH BEAM RELAY HORN RELAY IGNITION MAIN RELAY INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INFO MULTIMEDIA DISPLAY PLAYER MODULE INTERFACE MODULE INSIDE REARVIEW MIRROR INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) LT GRN/VIO WIRE MASS AIR FLOW SENSOR/INTAKE AIR TEMPERATURE SENSOR RADIO/ HVAC CONTROLS (IF EQUIPPED) REARVIEW CAMERA RED WIRE RED/BLK WIRE RED/BRN WIRE RED/DK BLU WIRE RED/DK GRN WIRE RED/VIO WIRE RED/WHT WIRE SECONDARY COOLING FAN AIR RIGHT INJECTION HIGH SPEED PUMP RELAY RELAY TO BODY CONTROL MODULE (DIAGRAM 5 OF 5) TO IGNITION DATA LINK SWITCH CONNECTOR (DIAGRAM 5 OF 5) TO WINDSHIELD WASHER PUMP RELAY (DIAGRAM 2 OF 5) UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO WIRE VIO/BLK WIRE VIO/GRY WIRE VIO/LT GRN WIRE VIO/WHT WIRE W/ AUDIO INTERFACE W/ REAR VIEW CAMERA W/ SIDE OBSTACLE DETECTION, SENSOR INDICATOR (NOT USED) W/O REAR VIEW CAMERA WHT WIRE WINDSHIELD WINDSHIELD WIPER WASHER RELAY PUMP RELAY WINDSHIELD WIPER SPEED CONTROL RELAY YEL WIRE

ACCESSORY DC/AC POWER INVERTER MODULE ACCESSORY POWER RECEPTACLE ACCESSORY RELAY B+ GND BLK WIRE BLOWER MOTOR CONTROL MODULE BODY CONTROL MODULE BRN/DK BLU WIRE CENTER CONTROL 1 ACCESSORY POWER RECEPTACLE CENTER CONTROL 2 ACCESSORY POWER RECEPTACLE CIRCUIT BREAKER DK BLU/WHT WIRE DK GRN/WHT WIRE DRIVER SEAT SEAT ADJUSTER MEMORY SWITCH CONTROL MODULE FROM FROM BATTERY FUSE BLOCK (DIAGRAM 1 OF 5) FROM INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 2 OF 5) FUSE FUSE (DIAGRAM 2 OF 5) GND 120 VAC GRY WIRE GRY/GRN WIRE GRY/VIO WIRE INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) INVERTER CTRL PASSENGER SEAT ADJUSTER SWITCH RADIO REAR COMPARTMENT LID RELEASE RELAY RED WIRE RED/BLK WIRE RED/BRN WIRE RED/DK BLU WIRE RED/DK GRN WIRE RED/LT GRN WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE TAN WIRE TAN/VIO WIRE TELEMATICS COMMUNICATIONS INTERFACE CONTROL MODULE (W/ ONSTAR) TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LEVER POSITION INDICATOR VIO WIRE W/O W/ MEMORY MEMORY

BLK WIRE BODY CONTROL MODULE BRN WIRE DRIVER DRIVER BACK CUSHION SEAT SEAT BLOWER BLOWER MOTOR ASSEMBLY DRIVER SEATBACK VIDEO DISPLAY FROM BATTERY FUSE BLOCK (DIAGRAM 1 OF 5) FROM IGNITION MAIN RELAY (DIAGRAM 4 OF 5) FUSE HTD WHL FUSE IGNITION IGNITION MAIN RELAY KEYLESS ENTRY CONTROL MODULE (IF EQUIPPED) LT GRN/VIO WIRE PASSENGER BACK SEAT BLOWER MOTOR PASSENGER CUSHION SEAT BLOWER MOTOR PASSENGER SEATBACK VIDEO DISPLAY PNK WIRE REAR BODY FUSE BLOCK (ON LEFT REAR WHEELHOUSE) REAR DIFFERENTIAL CLUTCH CONTROL MODULE REAR WINDOW SUNSHADE CONTROL MODULE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/DK BLU WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RELAY RUN WIRE STEERING COLUMN FUSE HOLDER STEERING WHEEL AIR BAG COIL STEERING WHEEL HEATING CONTROL MODULE (IF EQUIPPED) SUSPENSION CONTROL MODULE VIO WIRE VIO/BLK WIRE W/ CLIMATE CONTROL W/ DRIVER SEAT W/ HEATED STEERING WHEEL W/ PASSENGER SEAT W/ REAR SEAT ENTERTAINMENT W/O CLIMATE CONTROL

2500 2501 COMPUTER DATA LINES SYSTEM 39 40 42 55 HI SPD GMLAN + HI SPD GMLAN - AUTOMATIC TRANSMISSION ASSEMBLY BLK WIRE BLU WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRAKE APPLY SENS SUPPLY VOLTAGE BRAKE APPLY SENSOR SIGNAL BRAKE PEDAL POSITION SENSOR (NEAR TOP OF ACCELERATOR PEDAL ASSEMBLY) COMPUTER DATA LINES CONTROL SOLENOID VALVE ASSEMBLY DK BLU WIRE ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) EXCEPT 3.6L 3.6L FUSE FUSE BLOCK (LOWER LEFT SIDE OF DASH) HI SPEED GMLAN SERIAL DATA BUS - HOT AT ALL TIMES INSTRUMENT PANEL PARK/NEUTRAL PPL PARK LOCK SOLENOID CONTROL BRAKE APPLY SENS LOW REF RED/BRN WIRE SYSTEM TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LOCK CONTROL SOLENOID ACTUATOR VIO/BLK WIRE WHT WIRE WHT/GRY WIRE

1 25 26 12 DRAIN WIRE AUDIO SIG AUDIO SIG COMM SIG 34 37 35 36 PPL 5 4 VIDEO MODULE SIG VIDEO BRIGHT SIG 7 6 5 4 3 2 1 DRAIN WIRE AUX AUDIO LT SIG AUX AUDIO LT SIG AUDIO/VIDEO INPUT ADAPTER AUX VIDEO HI SIG BAT POS VOLT BATT POS VOLT BLK WIRE BLUNT CUT) BRIGHT SIG BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/GRY WIRE DK BLU/YEL WIRE DK GRN/WHT WIRE DRIVER SEATBACK VIDEO DISPLAY DVD VIDEO SIG (+) FUSE GRN/WHT WIRE GROUND GROUND PROVISION GRY/BRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INFRARED RED AUDIO SIG WIRE LH DVD AUDIO SIG (+) LT BLU WIRE LT GRN WIRE LT GRN/DK BLU WIRE MODE 2 SIG NCA WIRE ORG/BLK WIRE ORG/BLU WIRE PASSENGER SEATBACK VIDEO DISPLAY PNK/BLK WIRE PPL DVD AUDIO COMMON PPL/RED WIRE RADIO RADIO CIRCUIT REAR BODY FUSE BLOCK (ON LEFT REAR RED/BRN WIRE RED/WHT WIRE REMOTE ENABLE REMOTE INFRARED SIG (-) REMOTE SIG RH AUDIO SIG RH DVD AUDIO SIG(+) RH INFRARED AUDIO SIG RT INFRARED AUDIO SIG VIDEO BRIGHT SIG VIDEO DRAIN WIRE VIDEO MODE 2 SIG VIDEO MODULE SIG VIDEO SIG 2 - VIO WIRE VIO/BLK WIRE VIO/DK BLU WIRE WHEELHOUSE) WHT WIRE WHT/BLK WIRE WHT/DK BLU WIRE WHT/GRY WIRE WHT/LT GRN WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE