Buick LaCrosse II (2009-2013) vio/blk 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

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

16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 LOW LVL AUDIO (-) CENTER AUDIO SIG (-) 8 7 6 5 4 3 2 1 GROUND RIGHT SPEAKER - LEFT REAR SPEAKER - AUDIO AMPLIFIER (RIGHT SIDE OF TRUNK) BATT POS VOLT RIGHT SPEAKER + LEFT REAR SPEAKER + BLK WIRE BRN/DK BLU WIRE BRN/VIO WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/BLK WIRE DK BLU/BRN WIRE DK BLU/GRY WIRE DK BLU/VIO WIRE DK BLU/YEL WIRE FUSE GRY/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) INSTRUMENT PANEL CENTER SPEAKER LEFT FRONT DOOR SPEAKER LEFT REAR LEFT FRONT DOOR TWEETER SPEAKER SPEAKER LEFT SUBWOOFER SPEAKER LT GRN WIRE LT GRN/BLK WIRE LT GRN/DK BLU WIRE LT GRN/VIO WIRE LT GRN/YEL WIRE NCA WIRE RED WIRE RED/YEL WIRE RIGHT FRONT DOOR SPEAKER RIGHT FRONT TWEETER SPEAKER RIGHT REAR LEFT REAR DOOR WINDOW SHELF SPEAKER SPEAKER RIGHT REAR WINDOW SHELF SPEAKER RIGHT SUBWOOFER SPEAKER RR LO LVL SIG (-) LR LO LVL SIG (-) FRT LO LVL SIG (-) LF LO LVL SIG (-) UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO/BLK WIRE VIO/DK BLU WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/WHT 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

1 2 3 4 5 6 7 8 GND BLK WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) COIL CTRL EXPRESS SIG OPEN SIG CLOSE SIG FUSE HOT AT ALL TIMES IGNITION MAIN RELAY INSTRUMENT PANEL MULTI-FUNCTION SWITCH 2 LOGIC LT GRN WIRE LT GRN/VIO WIRE LT GRN/WHT WIRE PNK IGN 1 VOLT SPLY VOLT WIRE POWER DISTRIBUTION SYSTEM PPL PPL PPL REAR BODY FUSE BLOCK (ON LEFT REAR WHEELHOUSE) REAR WINDOW SUNSHADE MODULE REAR WINDOW SUNSHADE MOTOR (LEFT SIDE OF REAR WINDOW SHELF) RED WIRE SUNSHADE SWITCH VIO/BLK WIRE VIO/GRY WIRE W/ CLIMATE CONTROL WHT/ BLK WIRE YEL WIRE

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