Buick LaCrosse I (2004-2009) Computer data lines circuit

2361 1551 1450 (3.6L) 3.6L 3.8L 55 23 48 DATA BUS - DATA BUS + 6 7 38 37 DATA BUS - DATA BUS + DATA BUS + DATA BUS - ABS/TCS CLASS 2 SERIAL DATA ADG CLASS 2 SERIAL DATA BCM CLASS 2 SERIAL DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) CLASS 2 SERIAL DATA DATA LINK CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH) DIGITAL RADIO RECEIVER (LEFT SIDE OF TRUNK) DK BLU WIRE DK GRN WIRE ECM CLASS 2 SERIAL DATA ENGINE CONTROL MODULE (ECM) (TOP OF ENGINE) GRY WIRE HOT AT ALL TIMES ONSTAR/ ALDL FUSE HVAC CLASS 2 SERIAL DATA HVAC CONTROL MODULE (CENTER OF DASH) I/P FUSE BLOCK (BEHIND RIGHT SIDE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER RIGHT FRONT SEAT) INSTRUMENT PANEL CLUSTER (IPC) IPC CLASS 2 SERIAL DATA LT BLU WIRE LT GRN WIRE MANUAL A/C AUTOMATIC A/C NCA WIRE OF DASH) ORG/ WIRE ORG/BLK WIRE PCM CLASS 2 SERIAL DATA UART SERIAL DATA PRIMARY PNK RFA CLASS 2 SERIAL DATA WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL RADIO RADIO CLASS 2 SERIAL DATA SDM CLASS 2 SERIAL DATA SPLICE TAN WIRE TERMINATOR RESISTOR THROTTLE ACTUATOR CONTROL (TAC) MODULE (3.8L) (AT THROTTLE BODY) UART SERIAL DATA PRIMARY UART SERIAL DATA SECONDARY VEHICLE COMMUNICATION INTERFACE MODULE (VCIM) (BEHIND CENTER OF DASH) W/ ONSTAR WHT WIRE YEL WIRE