Buick LaCrosse II (2009-2013) instrument panel fuse block (lower left side of dash) Wiring diagrams

1 2 3 4 5 6 7 8 9 10 11 12 13 14 B+ GND 2139 5985 2501 COMPUTER DATA LINES SYSTEM AUTOMATIC TRANSMISSION ASSEMBLY BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BCM) (LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CONTROL SOLENOID DK BLU WIRE DRIVER INFORMATION CENTER (DIC) ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) FUSE GMLAN SERIAL DATA BUS + GRN WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/VIO WIRE HDLP SW HDLPS OFF SIG CTRL PPL HI SPD GMLAN SER DATA (+) HI SPD GMLAN SER DATA (+) HI SPD GMLAN SER DATA (-) HOT AT ALL TIMES HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) HOT W/ IGNITION MAIN RELAY ENERGIZED IGN IGN 1 VOLT WAKEUP SERIAL DATA HI SPD GMLAN SER DATA (-) INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) ISS ISS LOW HIGH LOGIC GMLAN LOW REF OSS OSS HIGH LOW P/N PARK/ NEUTRAL SIG PC 1 SOLENOID PC 2 SOLENOID PC 3 SOLENOID PC 4 SOLENOID PC 5 SOLENOID POWER DISTRIBUTION SYSTEM PPL PRESSURE CONTROL (PC) SOLENOID VALVE 1 PRESSURE CONTROL (PC) SOLENOID VALVE 2 PRESSURE CONTROL (PC) SOLENOID VALVE 3 PRESSURE CONTROL (PC) SOLENOID VALVE 4 PRESSURE CONTROL (PC) SOLENOID VALVE 5 RAP RELAY COIL CTRL RAP RLY COIL CTRL RED WIRE RED/DK GRN WIRE RED/WHT WIRE SHIFT SOLENOID (SS) VALVE 1 SHIFT SOLENOID (SS) VALVE 2 SS 1 SS 2 TAP UP/TAP DOWN SWITCH TCC SOLENOID TFP 1 TFP 3 TFP 4 TFP 5 TFT TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID VALVE TRANS ENABLE SWITCH TRANSMISSION CONTROL MODULE (TCM) TRANSMISSION FLUID PRESSURE MANUAL VALVE POSITION SWITCH TRANSMISSION FLUID TEMPERATURE SENSOR TRANSMISSION INPUT SHAFT SPEED SENSOR (ISS) TRANSMISSION INTERNAL MODE SWITCH (IMS) TRANSMISSION MANUAL SHIFT SWITCH TRANSMISSION OUTPUT SHAFT SPEED SENSOR (OSS) TRANSMISSION SHIFT LEVER TRNS TRNS GND RANGE RANGE SIG C SIG P TRNS TRNS RANGE RANGE SIG B SIG A VALVE ASSEMBLY VIO/BLK WIRE VIO/YEL WIRE WHT WIRE WHT/GRY WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 GND HI SPD GMLAN SER DATA (+) AUTOMATIC TRANSMISSION ASSEMBLY BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CONTROL SOLENOID DK BLU WIRE DRIVER INFORMATION CENTER (DIC) ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) FUSE GMLAN SERIAL DATA BUS + GRN WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/VIO WIRE HDLP SW HDLPS OFF SIG CTRL PPL HI SPD GMLAN SER DATA (-) IGN VOLT HI SPD GMLAN SER DATA (-) WAKEUP SER DATA HI SPD GMLAN SER DATA - HOT AT ALL TIMES HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) HOT W/ IGNITION MAIN RELAY ENERGIZED IGN INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) ISS ISS LOW HIGH LOGIC GMLAN LOW REF OSS OSS HIGH LOW P/N PARK/ NEUTRAL SIG GMLAN SERIAL DATA BUS- PC 1 SOLENOID PC 2 SOLENOID PC 3 SOLENOID PC 4 SOLENOID PC 5 SOLENOID POWER DISTRIBUTION SYSTEM PPL PRESSURE CONTROL (PC) SOLENOID VALVE 1 PRESSURE CONTROL (PC) SOLENOID VALVE 2 PRESSURE CONTROL (PC) SOLENOID VALVE 3 PRESSURE CONTROL (PC) SOLENOID VALVE 4 PRESSURE CONTROL (PC) SOLENOID VALVE 5 RAP RELAY COIL CTRL RAP RLY COIL CTRL RED WIRE RED/DK GRN WIRE RED/WHT WIRE SHIFT SOLENOID (SS) VALVE 1 SHIFT SOLENOID (SS) VALVE 2 SS 1 SS 2 TAP UP/TAP DOWN SWITCH TCC SOLENOID TFP 1 TFP 3 TFP 4 TFP 5 TFT TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID VALVE TRANS ENABLE SWITCH TRANSMISSION CONTROL MODULE (TCM) TRANSMISSION FLUID PRESSURE MANUAL VALVE POSITION SWITCH TRANSMISSION FLUID TEMPERATURE SENSOR TRANSMISSION INPUT SHAFT SPEED SENSOR (ISS) TRANSMISSION INTERNAL MODE SWITCH (IMS) TRANSMISSION MANUAL SHIFT SWITCH TRANSMISSION OUTPUT SHAFT SPEED SENSOR (OSS) TRANSMISSION SHIFT LEVER TRNS RANGE SIG A TRNS TRNS TRNS GND RANGE RANGE RANGE SIG C SIG B SIG P VALVE ASSEMBLY VIO/BLK WIRE VIO/YEL WIRE WHT WIRE WHT/GRY WIRE YEL WIRE

BLK WIRE BLU WIRE CIRCUIT BREAKER DN FWD DOWN DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT FRONT VERTICAL MOTOR (UNDER RIGHT FRONT CORNER OF DRIVER SEAT) DRIVER SEAT RECLINE MOTOR (LOWER RIGHT SIDE OF DRIVER SEAT BACK) FWD DOWN GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) LT GRN WIRE ORG/ WIRE RECLINE FWD RECLINE RWD RED WIRE RWD WHT 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

BLK WIRE BLU WIRE BRN WIRE CIRCUIT BREAKER DN FWD DOWN FWD DOWN GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) LT GRN WIRE ORG/ WIRE PASSENGER SEAT ADJUSTER SWITCH PASSENGER SEAT FRONT VERTICAL MOTOR (UNDER LEFT FRONT CORNER OF PASSENGER SEAT) PASSENGER SEAT RECLINE MOTOR (LOWER LEFT SIDE OF FRONT PASSENGER SEAT BACK) RECLINE FWD RECLINE RWD RED WIRE RWD WHT WIRE YEL WIRE

ACCESSORY VOLTAGE AJAR SW SIG AMBIENT LIGHT/ SUNLOAD SENSOR (CENTER OF DASH) BATT POS VOLT BLK WIRE BODY CONTROL MODULE (BCM) (LEFT SIDE OF DASH) BRN WIRE BRN/LT GRN WIRE BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DR LK CTRL DRV DR LK SW LK SIG DRV DR LK SW UNLK SIG DRV DR LK UNLK CTRL FUSE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE HDLP HI BEAM RLY CTRL HEADLIGHTS SYSTEM HOOD AJAR SW SIG HOOD AJAR SWITCH (FRONT OF ENGINE COMPT) HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES HVAC CONTROL MODULE INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 LK MTR STATUS SIG LR LK MTR STATUS SIG RR NETWORK BUS 4 POS VOLT PPL RED/WHT WIRE RIGHT REAR WINDOW SWITCH RUN/CRANK IGN 1 VOLT SECURITY IND CTRL UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO/BLK WIRE VIO/DK BLU WIRE VIO/GRY WIRE VIO/YEL WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

1 2 3 DISPLAY SIGNAL (-) DISPLAY SIGNAL (+) DRAIN WIRE ANTI-LOCK BRAKES SYSTEM BAT POS VOLT BLK WIRE BLK/GRY WIRE BRN WIRE BRN/DK GRN WIRE CAMERA SIG + MICROPHONE SIG (-) CELLULAR PHONE NAVIGATION, DIGITAL RADIO ANTENNA COAX DIMMING CTRL DIMMING CTRL CAMERA SIG 2 MICROPHONE SIG (+) DISPLAY SIG + DK BLU WIRE DK BLU/YEL WIRE DRAIN WIRE DRAIN WIRE NAV DISPLAY + RESET FUSE GROUND GRY WIRE GRY/BRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INFO DISPLAY MODULE (W/ NAVIGATION) INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) LOGIC LT GRN WIRE LT GRN/DK BLU WIRE LT GRN/YEL WIRE NAV DISPLAY TOUCH - LF SPD SENS SIG NAV TOUCH + NAVIGATION ANTENNA NAVIGATION ANTENNA SIGNAL SPLITTER NAVIGATION SYSTEM NCA WIRE RADIO RADIO ANTENNA RADIO ANTENNA MODULE (BEHIND "C" PILLAR TRIM) RED/DK BLU WIRE RED/VIO WIRE REMOTE ENABLE RESET+ VIDEO SYSTEM CIRCUIT VIO WIRE VIO/BLK WIRE W/ DIGITAL AUDIO SYSTEM W/ REAR SEAT ENTERTAINMENT W/O DIGITAL AUDIO SYSTEM W/O W/ NAVIGATION NAVIGATION WHT WIRE WHT/DK BLU WIRE WHT/LT GRN WIRE WHT/YEL WIRE YEL WIRE

1 2 3 DISPLAY SIGNAL (-) DISPLAY SIGNAL (+) DRAIN WIRE ANTI-LOCK BRAKES SYSTEM BAT POS VOLT BLK WIRE BLK/GRY WIRE BRN WIRE BRN/DK GRN WIRE CAMERA SIG + MICROPHONE SIG (-) CELLULAR PHONE NAVIGATION, DIGITAL RADIO ANTENNA COAX DIMMING CTRL DIMMING CTRL CAMERA SIG 2 MICROPHONE SIG (+) DISPLAY SIG + DK BLU WIRE DK BLU/YEL WIRE DRAIN WIRE DRAIN WIRE NAV DISPLAY + RESET FUSE GROUND GRY WIRE GRY/BRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INFO DISPLAY MODULE (W/ NAVIGATION) INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) LOGIC LT GRN WIRE LT GRN/DK BLU WIRE LT GRN/YEL WIRE NAV DISPLAY TOUCH - LF SPD SENS SIG NAV TOUCH + NAVIGATION ANTENNA NAVIGATION ANTENNA SIGNAL SPLITTER NAVIGATION SYSTEM NCA WIRE RADIO RADIO ANTENNA RADIO ANTENNA MODULE (BEHIND "C" PILLAR TRIM) RED WIRE RED/DK BLU WIRE RED/VIO WIRE REMOTE ENABLE RESET+ VIDEO SYSTEM CIRCUIT VIO WIRE VIO/BLK WIRE W/ DIGITAL AUDIO SYSTEM W/ NAVIGATION W/ REAR SEAT ENTERTAINMENT W/O DIGITAL AUDIO SYSTEM W/O NAVIGATION WHT WIRE WHT/DK BLU WIRE WHT/LT GRN WIRE WHT/YEL WIRE YEL WIRE

AIR BAG IND AIR BAG ON IND SEAT BELT ON IND BEN/ORG WIRE BETWEEN FOLLOWING PINS: 1-2, 3-4, 5-6, 7-8) BLK WIRE BLK/OEG WIRE BLK/ORG WIRE BRN WIRE BRN/ORG WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE FUSE GRN WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/ORG WIRE HOT AT ALL TIMES HOT IN ON OR START IGN 1 VOLT INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (BELOW CENTER CONSOLE) INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 LEFT FRONT IMPACT SENSOR (LEFT SIDE OF CROSSMEMBER) LO SPD GMLAN LOGIC LOW SPD GMLAN SERIAL DATA LOW SPEED GMLAN SERIAL DATA NCA WIRE ORG/ WIRE ORG/LT GRN WIRE ORG/VIO WIRE ORG/WHT WIRE ORG/YEL WIRE PASS AIR BAG ON IND PASS AIR BAG OFF IND PASSENGER AIR BAG OFF IND PASSENGER INSTRUMENT PANEL AIR BAG PASSENGER PRESENCE DETECTION MODULE (IF EQUIPPED) (UNDER FRONT PASSENGER'S SEAT) PNK WIRE RED WIRE RED/WHT WIRE RIGHT FRONT IMPACT SENSOR (RIGHT SIDE OF CROSSMEMBER) SEAT BELT IND SHORTING BAR STEERING WHEEL AIR BAG STEERING WHEEL AIR BAG COIL TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO WIRE VIO/WHT WIRE WHT WIRE WHT/ORG WIRE YEL WIRE YEL/BRN WIRE YEL/ORG WIRE