Buick LaCrosse II (2009-2013) lt grn/blk Wiring diagrams

1 2 3 4 5 6 POS VOLT GND VOLT AJAR SW SIG BATT FUSE BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/GRY WIRE BLK/LT GRN WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU/BLK WIRE DK BLU/WHT WIRE GRN WIRE GRN/GRY WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES IGNITION MODE SWITCH KEYLESS ENTRY CONTROL MODULE (RIGHT KICK PANEL) LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR WINDOW SWITCH LOW REF (7) SIG (6) LOW REF (6) SIG (8) LOW REF (8 SIG (7) LT GRN WIRE LT GRN/BLK WIRE MTR FUSE WHEELHOUSE) NETWORK BUS 4 PASSENGER DOOR LATCH ASSEMBLY POS VOLT GND PPL PPL REAR BODY FUSE BLOCK (ON LEFT REAR RED/DK BLU WIRE RED/WHT WIRE RIGHT REAR DOOR LATCH ASSEMBLY RR LATCH CTRL LR LATCH CTRL PASS DR LATCH CTRL DRV DR LATCH CTRL RR UNLATCH CTRL LR UNLATCH CTRL PASS DR UNLATCH CTRL DRV DR UNLATCH CTRL SERIAL DATA SW MODE CTRL LOW REF VIO/BLK WIRE VIO/DK BLU WIRE VIO/YEL WIRE WHT/LT GRN WIRE WHT/YEL WIRE YEL/BLK WIRE

14 18 SEAT SW SIG (1) GMLAN SERIAL DATA BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/RED WIRE DK BLU/WHT WIRE DK BLU/YEL WIRE DOWN DRIVER OUTSIDE REARVIEW MIRROR DRIVER SEAT MEMORY SWITCH FUSE GRN/BLK WIRE GRN/BLU WIRE GRN/WHT WIRE GRN/YEL WIRE GROUND GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/LT GRN WIRE GRY/RED WIRE GRY/YEL WIRE HOT AT ALL TIMES LAMP SUPPLY VOLT LEFT LOGIC LOGIC PASSENGER WINDOW SWITCH LOW REF LT GRN WIRE LT GRN/BLK WIRE LT GRN/VIO WIRE LT GRN/WHT WIRE MEM MOTOR COMM NAVIGATION SYSTEM NETWORK BUS 8 OUTSIDE REARVIEW MIRROR SWITCH PASSENGER PASSENGER OUTSIDE REARVIEW MIRROR POSITION CTRL POSITIVE VOLT PPL PPL SENS SIG RED/VIO WIRE RIGHT SEAT MEMORY CONTROL MODULE (UNDER DRIVER'S SEAT) SENS SIG SET SIG UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO/GRY WIRE VIO/WHT WIRE YEL/BRN WIRE YEL/VIO WIRE

1 2 3 4 5 6 POS VOLT GND VOLT AJAR SW SIG BATT FUSE BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/GRY WIRE BLK/LT GRN WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU/BLK WIRE DK BLU/WHT WIRE GRN WIRE GRN/GRY WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES IGNITION MODE SWITCH KEYLESS ENTRY CONTROL MODULE (RIGHT KICK PANEL) LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR WINDOW SWITCH LOW REF (7) SIG (6) LOW REF (6) SIG (8) LOW REF (8 SIG (7) LT GRN WIRE LT GRN/BLK WIRE MTR FUSE WHEELHOUSE) NETWORK BUS 4 PASSENGER DOOR LATCH ASSEMBLY POS VOLT GND PPL PPL REAR BODY FUSE BLOCK (ON LEFT REAR RED/DK BLU WIRE RED/WHT WIRE RIGHT REAR DOOR LATCH ASSEMBLY RR LATCH CTRL LR LATCH CTRL PASS DR LATCH CTRL DRV DR LATCH CTRL RR UNLATCH CTRL LR UNLATCH CTRL PASS DR UNLATCH CTRL DRV DR UNLATCH CTRL SERIAL DATA SW MODE CTRL LOW REF VIO/BLK WIRE VIO/DK BLU WIRE VIO/YEL WIRE WHT/LT GRN WIRE WHT/YEL WIRE YEL/BLK WIRE

B(+) BLK WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN/YEL WIRE BUS 4 COMPUTER DATA LINES SYSTEM DK BLU/GRY WIRE DK BLU/VIO WIRE DK GRN WIRE DOOR LOCKS SYSTEM DOWN DRIVER WINDOW MOTOR (DRIVER'S DOOR) EXPRESS FUSE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/YEL WIRE HOT AT ALL TIMES LEFT REAR WINDOW MOTOR (LEFT REAR DOOR) LEFT REAR WINDOW SWITCH LF UP SIG LOCK OUT BUS 3 SWITCH LOGIC LOGIC DRIVER WINDOW SWITCH LR DOWN CTRL LR DR AJAR SW SIG LR UP CTRL LT GRN/BLK WIRE LT GRN/VIO WIRE LT GRN/WHT WIRE NETWORK BUS 3 NETWORK BUS 4 PASSENGER WINDOW MOTOR (FRONT PASSENGER'S DOOR) PASSENGER WINDOW SWITCH RED/DK BLU WIRE RED/VIO WIRE RED/WHT WIRE RF DOWN SIG RF DR AJAR SW SIG RF EXPRESS SIG RF UP SIG RIGHT FRONT WINDOW B+ SWITCH RIGHT REAR WINDOW MOTOR (RIGHT REAR DOOR) RIGHT REAR WINDOW SWITCH RR DOWN CTRL RR UP CTRL UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) UNLCK SIG VIO/GRY WIRE W/ MEMORY W/O MEMORY WHT/VIO WIRE YEL/BLK WIRE YEL/BLU WIRE

AMPLIFIER CTRL AUDIO SIG (3) AUX DET SIG BATT POS VOLT BLK WIRE BLK/YEL WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN/DK BLU WIRE BRN/VIO WIRE BRN/WHT WIRE CENTER AUDIO SIG CENTER SIG CGI - COMMON SIG COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CTRL SW SIG DK BLU WIRE DK BLU/BLK WIRE DK BLU/BRN WIRE DK BLU/GRY WIRE DK BLU/VIO WIRE DRAIN WIRE DRIVER SEATBACK VIDEO DISPLAY (W/ REAR SEAT ENTERTAINMENT) FRT LO LVL SIG (-) GM LAN SER DATA GMLAN SERIAL DATA GRN WIRE GRY WIRE GRY/DK GRN WIRE HEADLIGHTS SYSTEM LEFT AUDIO SIG LEFT AUX SIG (2) LF LO LVL SIG LOW LVL (-) LOW LVL SIG (-) LR LO LVL SIG LT GRN WIRE LT GRN/BLK WIRE LT GRN/DK BLU WIRE LT GRN/YEL WIRE NCA WIRE ORG/ WIRE PASSENGER SEATBACK VIDEO DISPLAY (W/ REAR SEAT ENTERTAINMENT) PPL RADIO RED WIRE REMOTE ENABLE RF LO LVL SIG RIGHT AUDIO SIG RIGHT SIG 2 RIGHT STEERING WHEEL CONTROLS SWITCH RR LO LVL SIG SEEK DOWN SEEK UP SOURCE STACK RESET SIG STEERING WHEEL AIR BAG COIL SW REF VOLT VIDEO SYSTEM CIRCUIT VIO WIRE VIO/DK BLU WIRE VOICE LOW REF VOICE MUTE VOICE SIG VOL (-) W/ REAR SEAT ENTERTAINMENT WHT WIRE WHT/BLK WIRE WHT/VIO 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

4 8 SW REF VOLT CTRL SW SIG AUDIO SIG (3) AUX DET SIG BATT POS VOLT BLK WIRE BLK/YEL WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN/DK BLU WIRE CENTER SIG CGI - COMMON SIG COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DK BLU WIRE DK BLU/BLK WIRE DK BLU/WHT WIRE DRAIN WIRE FRT LO LVL SIG (-) GM LAN SER DATA GRN WIRE GRY WIRE GRY/DK GRN WIRE HEADLIGHTS SYSTEM INSTRUMENT PANEL CENTER SPEAKER LEFT AUDIO SIG LEFT AUX SIG (2) LEFT FRONT DOOR SPEAKER LEFT FRONT TWEETER SPEAKER LEFT REAR DOOR SPEAKER LF LO LVL SIG LO SPD GMLAN SERIAL DATA LR LO LVL SIG LT GRN WIRE LT GRN/BLK WIRE LT GRN/YEL WIRE MUTE NCA WIRE ORG/ WIRE PPL RADIO RED WIRE REMOTE ENABLE RF LO LVL SIG RIGHT AUDIO SIG RIGHT FRONT DOOR SPEAKER RIGHT FRONT TWEETER SPEAKER RIGHT REAR DOOR SPEAKER RIGHT SIG 2 RIGHT STEERING WHEEL CONTROLS SWITCH RR LO LVL SIG SEEK DOWN SEEK UP SOURCE STACK RESET SIG STEERING WHEEL AIR BAG COIL VIDEO SYSTEM CIRCUIT VIO WIRE VIO/DK BLU WIRE VOICE VOICE LOW REF VOICE SIG VOL (-) WHT WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE