Buick LaCrosse I (2004-2009) sdm class 2 serial data Wiring diagrams

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

ABS INDICATOR ABS/TCS CLASS 2 SERIAL DATA AIR BAG INDICATOR AMBIENT AIR TEMPERATURE SENSOR BASE BCM CLASS 2 SERIAL DATA BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH (CENTER OF BRAKE FLUID RESERVOIR) DEFOGGER SYSTEM BRAKE INDICATOR BRN WIRE BRN/WHT WIRE CHARGING INDICATOR COMPASS SENS FEED COMPASS SENS RET COMPUTER DATA LINES SYSTEM CRUISE INDICATOR DISPLAY FUSE 18 DK BLU WIRE ECM/PCM CLASS 2 SERIAL DATA ECM/PCM CLASS 2 SERIAL DATA IGN ELECTRONIC COMPASS MODULE (TOP RIGHT SIDE OF REAR PACKAGE SHELF) ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE GAGE ENGINE COOLANT TEMPERATURE INDICATOR ENGINE OIL LEVEL SWITCH (LOWER FRONT CENTER OF ENGINE OIL PAN) ENGINE OIL PRESSURE (EOP) SWITCH (BELOW POWER STEERING PUMP) FOG LAMPS INDICATOR FUEL GAGE GRY WIRE HIGH BEAM INDICATOR HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) CLSTR FUSE HOT W/ IGN 1 RELAY ENERGIZED I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) IGN IGN 1 VOLTAGE INSTRUMENT PANEL CLUSTER (IPC) IPC CLASS 2 SERIAL DATA IPC/BCM CLASS 2 SERIAL DATA KM/H INDICATOR LEFT TURN INDICATOR LOGIC LOW FUEL WARNING LAMP INDICATOR LOW TIRE PRESSURE INDICATOR LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP (MIL) MESSAGE REQUEST MPH INDICATOR ODO/TRIP OIL LEVEL INDICATOR LAMP ORG/ WIRE P R N D 3 2 1 PCM/ECM CLASS 2 SERIAL DATA PNK PPL WIRE PNK WIRE POWER DISTRIBUTION SYSTEM REAR DEFOG RLY CTRL RED WIRE RIGHT TURN INDICATOR SDM CLASS 2 SERIAL DATA SEAT BELT INDICATOR SPEEDOMETER SUPPLEMENTAL RESTRAINTS SYSTEM TACHOMETER TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRACTION OFF INDICATOR TURN AUDIBLE INDICATOR UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) WHT WIRE YEL WIRE

ABS INDICATOR ABS/TCS CLASS 2 SERIAL DATA AIR BAG INDICATOR BAT POS VOLTAGE BRAKE WARNING IND CTRL BCM CLASS 2 SERIAL DATA BCM CLASS 2 SERIAL DATA BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH (CENTER OF BRAKE FLUID RESERVOIR) BRAKE INDICATOR BRN/WHT WIRE CHANGE OIL INDICATOR CHARGING INDICATOR CHECK GAS CAP INDICATOR CLSTR FUSE COMPUTER DATA LINES SYSTEM CRUISE INDICATOR DOOR AJAR INDICATOR ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE GAGE ENGINE COOLANT TEMPERATURE INDICATOR FUEL GAGE GRY WIRE HDLP SUGGEST INDICATOR HIGH BEAM INDICATOR HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) IGN IGN PCM CLASS 2 SERIAL DATA IGN PCM/ECM CLASS 2 SERIAL DATA INSTRUMENT PANEL CLUSTER (IPC) IPC CLASS 2 SERIAL DATA PASS SEAT BELT IND IPC/BCM CLASS 2 SERIAL DATA KM/H INDICATOR LEFT TURN INDICATOR LOGIC LOW COOLANT INDICATOR LOW FUEL WARNING LAMP INDICATOR LOW REF LOW TIRE PRESSURE INDICATOR LOW WASHER FLUID INDICATOR MALFUNCTION INDICATOR LAMP (MIL) MPH INDICATOR ODO/TRIP OIL LEVEL INDICATOR LAMP ORG/ WIRE ORG/BLK WIRE P R N D 3 2 1 PARK BRAKE SWITCH (ON PARK BRAKE ASSEMBLY) PCM CLASS 2 SERIAL DATA PCM/ECM CLASS 2 SERIAL DATA PCM/ECM CLASS 2 SERIAL DATA IGN PPL REAR HATCH AJAR INDICATOR REDUCED ENGINE POWER INDICATOR RIGHT TURN INDICATOR SDM CLASS 2 SERIAL DATA SEAT BELT INDICATOR SECURITY INDICATOR SERVICE VEHICLE SOON INDICATOR SPEEDOMETER SUPPLEMENTAL RESTRAINTS SYSTEM TACHOMETER TAN/WHT WIRE TRACTION OFF INDICATOR TURN AUDIBLE INDICATOR WHT WIRE

ABS/TCS CLASS 2 SERIAL DATA ANTENNA SIGNAL BLK WIRE BLK/WHT WIRE CHECK TIRE PRESSURE INDICATOR CHECK TIRE PRESSURE SERVICE TIRE MONITOR CLASS 2 SERIAL DATA DK BLU WIRE DOOR LOCK AJAR INDICATOR SWITCH DRIVER SEAT BELT SWITCH (IN SEAT BELT BUCKLE) FRONT AJAR PASSENGER DOOR LOCK (IN REAR SIDE OF FRONT PASSENGER'S DOOR) GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) IGN INFLATABLE RESTRAINT PASSENGER AIR BAG ON/OFF INDICATOR INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER RIGHT FRONT SEAT) INSTRUMENT PANEL CLUSTER (IPC) IPC CLASS 2 SERIAL DATA LOGIC LT GRN WIRE LT GRN/BLK WIRE MESSAGE REQUEST NCA WIRE ORG/ WIRE PASSENGER SEAT BELT SWITCH (IN SEAT BELT BUCKLE) PNK RFA CLASS 2 SERIAL DATA WIRE PNK WIRE PPL PPL PASS SEAT BELT IND RADIO RED WIRE RIGHT SDM CLASS 2 SERIAL DATA SDM CLASS 2 SERIAL DATA LEFT SEAT BELT SW RIGHT SEAT BELT SW SEAT BELT INDICATOR SIR FUSE 9 SOLID STATE UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) WHT WIRE YEL WIRE