Buick LaCrosse I (2004-2009) gry/blk Wiring diagrams

BLK WIRE BLK/WHT WIRE COUR- TESY LAMP DEFEAT LAMP SWITCH ASSEMBLY DK BLU/WHT WIRE DOME DRIVER DOOR LOCK (IN REAR SIDE OF DRIVER'S DOOR) FRONT PASSENGER DOOR LOCK (IN REAR SIDE OF FRONT PASSENGER'S DOOR) GARAGE DOOR OPENER GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES I/P COMPARTMENT LAMP SWITCH I/P FUSE BLOCK INSIDE REARVIEW MIRROR INT/ILLUM FUSE LEFT COURTESY/ READING LAMP LEFT DOME/ READING LAMP LEFT I/P COURTESY LAMP LEFT REAR DOOR LOCK (IN REAR SIDE OF LEFT REAR PASSENGER'S DOOR) LEFT VANITY MIRROR LAMP LT GRN WIRE OFF ORG/ WIRE OVERHEAD CONSOLE READING LAMPS PNK/BLK WIRE REAR COMPARTMENT COURTESY LAMP REAR COMPARTMENT LID LATCH (IN REAR COMPT LID) RIGHT COURTESY/ READING LAMP RIGHT DOME/ READING LAMP RIGHT I/P COURTESY LAMP RIGHT REAR DOOR LOCK (IN REAR SIDE OF RIGHT REAR PASSENGER'S DOOR) RIGHT VANITY MIRROR LAMP TAN WIRE W/ SUNSHADE MIRROR YEL/BLK WIRE

15 43 8 SERIAL DATA FUEL LVEL SIG LOW REF PPL 3.6L 3.8L 3.8L PPL 31 57 OIL LVL SW SIG OIL PRESS SW 40 5 7 OIL PRESS SW 42 25 48 PPL FUEL LVEL SIG LOW REF SERIAL DATA AIR CONDITIONING SYSTEM ANTI-LOCK BRAKES SYSTEM BASE BCM CLASS 2 SERIAL DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) BRN WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE DOOR LOCK AJAR INDICATOR SWITCH DRIVER INFORMATION CENTER (DIC) TRACTION CONTROL (UPLEVEL) E/M (BASE) ENGINE CONTROL MODULE (ECM) (3.6L) (TOP OF ENGINE) ENGINE CONTROLS SYSTEM FUEL (UPLEVEL) GRY WIRE GRY/BLK WIRE HAZARD GAGES (UPLEVEL) INFO (UPLEVEL) LF DR AJAR SW SIG LOGIC ENGINE OIL PRESSURE (EOP) SENSOR (LEFT FRONT OF ENGINE BLOCK) LOW REF LR DR AJAR SW SIG LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE OIL PRESS SW ORG/ WIRE ORG/BLK WIRE PARK BRAKE SW SIG PARK BRAKE SWITCH (ON PARK BRAKE ASSEMBLY) PNK WIRE PPL PPL/WHT WIRE REAR COMPARTMENT LID LATCH (IN REAR COMPT LID) REAR LID AJAR SW RED WIRE RED/BLK WIRE RF DR AJAR SW SIG RR DR AJAR SW SIG TAN WIRE TAN/BLK WIRE TRIP SET/RESET ODO (UPLEVEL) WHT WIRE YEL WIRE

31 57 OIL LVL SW SIG OIL PRESS SW BCM CLASS 2 SERIAL DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) BRN WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE DOOR LOCK AJAR INDICATOR SWITCH DRIVER DOOR LOCK DOOR (IN REAR SIDE OF DRIVER'S DOOR) LOCK AJAR INDICATOR SWITCH ENGINE CONTROLS SYSTEM ENGINE OIL LEVEL SWITCH (LOWER FRONT CENTER OF ENGINE OIL PAN) ENGINE OIL PRESSURE (EOP) SWITCH (BELOW POWER STEERING PUMP) FRONT PASSENGER DOOR LOCK (IN REAR SIDE OF FRONT PASSENGER'S DOOR) FUEL LEVEL SENSOR FUEL PUMP/ SENDER ASSEMBLY (IN FUEL TANK) GRY WIRE GRY/BLK WIRE I/P FUSE BLOCK (BEHIND RIGHT LEFT REAR DOOR LOCK (IN REAR SIDE OF LEFT REAR PASSENGER'S DOOR) LF DR AJAR SW SIG LOW REF LR DR AJAR SW SIG LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/BLK WIRE PARK BRAKE SW SIG PPL PPL FUEL LVEL SIG PPL/WHT WIRE REAR COMPARTMENT LID LATCH (IN REAR COMPT LID) REAR LID AJAR SW RED WIRE RED/BLK WIRE RF DR AJAR SW SIG RR DR AJAR SW SIG SERIAL DATA SIDE OF DASH) TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) WHT WIRE

AUTO OFF AUTOMATIC A/C MANUAL A/C BATTERY CURRENT SENSOR (NEAR BATTERY) BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BCM) (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DRIVER DOOR LOCK SWITCH DRIVER INFORMATION CENTER (DIC) DRIVER WINDOW SWITCH FRONT PASSENGER DOOR LOCK SWITCH FRONT PASSENGER WINDOW SWITCH GROUND GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BLK WIRE HEAD HOT AT ALL TIMES HVAC CONTROL MODULE (CENTER OF DASH) I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) I/P LAMP SUPPLY VOLTAGE ILLUM INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (IN STEERING COLUMN) INSTRUMENT PANEL CLUSTER (IPC) INT/ ILLUM FUSE LAMP SWITCH ASSEMBLY LEFT STEERING WHEEL CONTROLS (W/ ACCESSORY STEERING WHEEL CONTROL) LT GRN WIRE NCA WIRE ORG/ WIRE OUTSIDE REARVIEW MIRROR SWITCH PARK PARK LAMP SW ON SIG PNK WIRE PRNDL LAMP (CONSOLE SHIFT) RADIO RED/WHT WIRE RIGHT STEERING WHEEL CONTROLS (W/ ACCESSORY STEERING WHEEL CONTROL) STR/WHL/ ILLUM FUSE SUPPLY

4 3 2 1 VOLT (+) AJAR DOOR LOCK AJAR INDICATOR SWITCH BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BCM) (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) CLASS 2 COAX ANTENNA SIG COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DOOR AJAR INDICATOR DOOR AJAR TRUNK AJAR DOOR LOCK ACTUATOR DOOR LOCK CYLINDER SWITCH DOOR LOCK OPEN INDICATOR SWITCH DR/LCK TRUNK FUSE DRIVER DOOR LOCK (IN REAR SIDE OF DRIVER'S DOOR) DRIVER DOOR LOCK SWITCH FRONT PASSENGER DOOR LOCK (IN REAR SIDE OF FRONT PASSENGER'S DOOR) FRONT PASSENGER DOOR LOCK SWITCH GRY WIRE GRY/BLK WIRE HORNS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) INSTRUMENT PANEL CLUSTER (IPC) LEFT REAR DOOR LOCK (IN REAR SIDE OF LEFT REAR PASSENGER'S DOOR) LOCK LOCK UNLOCK LOGIC LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MESSAGE CENTER NCA WIRE ORG/ WIRE ORG/BLK WIRE PASSENGER SEAT, APPROXIMATELY 26 CM FROM SECOND PNK RFA SER DATA GROUND WIRE POWER DISTRIBUTION SYSTEM PPL REAR COMPARTMENT LID LATCH (IN REAR COMPT LID) RED WIRE RED/BLK WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) RFA/MOD FUSE RIGHT REAR DOOR LOCK (IN REAR SIDE OF RIGHT REAR PASSENGER'S DOOR) SECURITY INDICATOR TAN WIRE THEFT LED TOWARDS INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE) TRUNK AJAR INDICATOR UNLOCK W/ DIGITAL AUDIO SYSTEM WHT WIRE YEL WIRE YEL/BLK WIRE

BATTERY BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) CHMSL/ BKUP FUSE DOOR LOCK AJAR INDICATOR SWITCH DR/LCK TRUNK FUSE DRIVER DOOR LOCK (IN REAR AJAR EXT LMPS OFF INPUT GRY WIRE GRY/BLK WIRE HAZRD FUSE HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) IGNITION SWITCH INT/ ILLUM FUSE KEY IN IGNITION LAMP SWITCH ASSEMBLY LEFT REAR DOOR LOCK AJAR LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE OFF HEAD ORG/ WIRE ORG/BLK WIRE PARK AUTO PARK BRAKE SWITCH (ON PARK BRAKE ASSEMBLY) SIDE OF DRIVER'S DOOR) SWITCH UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) WASHER/ RVC FUSE 6