Buick LaCrosse I (2004-2009) battery Wiring diagrams

1715 1415 2144 1251 1356 94 524 192 1872 WIPER/WASHER SYSTEM 1732 690 1315 1314 80 17 1037 INTERIOR LIGHTS SYSTEM 244 17 DOOR LOCKS SYSTEM EXTERIOR LIGHTS SYSTEM 28 1439 1459 860 HORNS SYSTEM POWER DISTRIBUTION SYSTEM 295 294 550 440 19 DOOR LOCKS SYSTEM A/T SHFT LK CTRL SOL VOLT ANTI-THEFT SYSTEM EXTERIOR LIGHTS SYSTEM ANTI-THEFT SYSTEM WIPER/WASHER SYSTEM BATTERY BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) BRN WIRE BRN/WHT WIRE CHMSL/ BKUP FUSE COURTESY LAMPS SW ON SIG I/P DIMMING RET TRACTION CTRL SW SIG LOW REF DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DOOR LOCKS SYSTEM NAVIGATION SYSTEM DR LCK/ TRUNK FUSE GRY WIRE GRY/BLK WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) INT/ ILLUM FUSE HAZRD FUSE INTERIOR LIGHTS SYSTEM DOOR LOCKS SYSTEM DEFOGGER SYSTEM LR DOOR OPEN SW SIG RF DOOR AJAR SW SIG REAR DEFOG RLY CTRL LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PARK BRAKE SWITCH (ON PARK BRAKE ASSEMBLY) PASS DOOR LOCK SW LOCK SIG STOP LAMP SW SIG PNK PPL WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWER DISTRIBUTION SYSTEM PPL RED WIRE RED/BLK WIRE RED/WHT WIRE SEATS SYSTEM SHIFT INTERLOCK SYSTEM SHIFT INTERLOCK SYSTEM INTERIOR LIGHTS SYSTEM WIPER/WASHER SYSTEM TAN WIRE TAN/WHT WIRE WARNING SYSTEM EXTERIOR LIGHTS SYSTEM COMPUTER DATA LINES SYSTEM WHT WIRE WHT/BLK WIRE WIPER/WASHER SYSTEM WIPER/WASHER SYSTEM EXTERIOR LIGHTS SYSTEM WIPER/WASHER SYSTEM HEADLIGHTS SYSTEM WIPER/WASHER SYSTEM YEL WIRE YEL/BLK WIRE

3.6L 3.8L BATT + BATTERY BATTERY CURRENT SENSOR BLK WIRE BLK/WHT WIRE BRN WIRE CHARGE INDICATOR CLSTR FUSE COMPUTER DATA LINES SYSTEM CURRENT SENSOR LOW REF CURRENT SENSOR SIG DK GRN WIRE ECM CLASS 2 SERIAL DATA ENGINE CONTROL MODULE (ECM) (TOP OF ENGINE) FUSIBLE LINK (8 GA- GENERATOR GENERATOR FIELD DUTY CYCLE SIG GENERATOR TURN ON SIG GROUND GRY WIRE HOT AT ALL TIMES I/P CLASS 2 SERIAL DATA I/P DIMMING VOLTAGE REF I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) INSTRUMENT PANEL CLUSTER (IPC) LOGIC ORG/ WIRE PCM CLASS 2 SERIAL DATA PCM/ECM CLASS 2 SERIAL DATA POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (PCM) RED (OR ORG) WIRE RED WIRE RED/WHT WIRE SPLICE PACK STARTER WHT WIRE

3.6L 3.8L A/C CLU DIODE A/C COMPRESSOR CLUTCH A/C WIPER RELAY 37 RELAY 45 AUTOMATIC TRANSMISSION TRANSMISSION CLUTCH INTERNAL MODE DIODE SWITCH (IMS) BATTERY BLK WIRE BODY CONTROL MODULE (BCM) ELECTRONIC BRAKE CONTROL MODULE (EBCM) EXCEPT SULEV FUEL PP RELAY 41 HEADLAMP ASSEMBLY) HOOD AJAR SWITCH HORN ASSEMBLY IGN 1 HDM BEAM MODULE 35 IGN 1 HDM BEAM RELAY 37 MODULE 35 LAMP LEFT FRONT MARKER LAMP LEFT HIGH BEAM HEADLAMP POWERTRAIN CONTROL MODULE (PCM) RIGHT COOLING FAN RIGHT FRONT MARKER LAMP RIGHT FRONT PARK/ RIGHT TURN FRONT SIGNAL FOG LAMP LAMP RIGHT HIGH BEAM HEADLAMP SECONDARY AIR INJECTION (AIR) PUMP (SULEV) SULEV TAN WIRE THROTTLE ACTUATOR CONTROL (TAC) MODULE TRANSMISSION CONTROL MODULE (TCM) FUEL PP RELAY 41 WHT WIRE WINDSHIELD WASHER FLUID LEVEL SWITCH WINDSHIELD WASHER FLUID PUMP

3.8L 3.6L ABS MTR FUSE 31 ABS SOL FUSE 19 AIR PUMP FUSE 25 AUTOMATIC A/C MANUAL A/C BATT MAIN 1 FUSE 26 BATT MAIN 2 FUSE 27 BATT MAIN 3 FUSE 28 BATT MAIN 4 FUSE 30 BATTERY BLK WIRE BLK/WHT WIRE BLOWER MOTOR CONTROL PROCESSOR BODY CONTROL MODULE (BCM) CANISTER FUSE PRK/ SWITCH FUSE CHMSL/ BKUP FUSE INT ILLUM FUSE CLSTR FUSE DATA LINK CONNECTOR (DLC) DIGITAL RADIO RECEIVER DR/LCK TRUNK FUSE RAP RELAY DRIVER DRIVER SEAT SEAT ADJUSTER LUMBAR SWITCH SWITCH DRIVER PASSENGER HEATED HEATED SEAT RELAY SEAT RELAY (IF EQUIPPED) (IF EQUIPPED) DRIVER WINDOW SWITCH ELECTRONIC BRAKE CONTROL MODULE (EBCM) (W/ ABS) EVAPORATIVE PARK EMISSION SWITCH (EVAP) CANISTER VENT SOLENOID FRONT PASSENGER WINDOW SWITCH FUSIBLE LINK (8 GA- GENERATOR HAZRD FUSE HTD SEAT FUSE HVAC CONTROL MODULE HVAC FUSE I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) INFLATABLE RESTRAINT FRONT PASSENGER PRESENCE SYSTEM (PPS) MODULE INSIDE SUNROOF REARVIEW MOTOR MIRROR NCA WIRE ONSTAR/ ALDL FUSE ORG/ WIRE OUTSIDE REAR VIEW MIRROR SWITCH PASSENGER SEAT ADJUSTER SWITCH (IF EQUIPPED) PCM/ ETC FUSE 16 POWERTRAIN ENGINE CONTROL CONTROL MODULE MODULE (PCM) (ECM) PRK LAMP RELAY PRK/LAMP FUSE PWR SEAT CIRCUIT BREAKER PWR WNDW CIRCUIT BREAKER PWR/ MIR FUSE R/ DEFOG RELAY RADIO AUDIO AMPLIFIER (W/ 9 SPEAKER SYSTEM) RDO AMP FUSE RED WIRE RFA/ MOD FUSE S/ROOF FUSE SECONDARY AIR INJECTION (AIR) PUMP RELAY (W/ CALIFORNIA PZEV EMISSION SYSTEM) STARTER TO TCM FUSE 8 VEHICLE COMMUNICATION INTERFACE MODULE (VCIM) (IF EQUIPPED) W/ DIGITAL AUDIO SYSTEM W/ DRIVER POWER LUMBAR CONTROL SEAT W/ SUNROOF W/ VEHICLE COMMUNICATION SYSTEM W/O DIGITAL AUDIO SYSTEM W/O DRIVER POWER LUMBAR CONTROL SEAT W/O SUNROOF WASHER/ RVC FUSE 6 WHT WIRE YEL WIRE

12 VOLT REF 3.8L 3.6L BATTERY BATTERY POSITIVE REMOTE STARTER DISABLED CLASS 2 SERIAL DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) CLASS 2 SERIAL DATA CLSTR FUSE CRANK RELAY 48 CRANK VOLTAGE DK GRN WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE HOLD- IN COIL HOOD AJAR SWITCH (W/ REMOTE KEYLESS ENTRY) (FRONT OF ENGINE COMPT) HOOD AJAR SWITCH SIG HOT AT ALL TIMES HOT W/ IGN 1 RELAY ENERGIZED I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) IGNITION SWITCH INSTRUMENT PANEL CLUSTER (IPC) LOCK LOGIC LT GRN WIRE ORG/ WIRE PCM FUSE 15 PNK IGNITION 1 VOLTAGE WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL PULL- IN COIL RED WIRE RUN WIRE SPLICE PACK START ENABLE RLY CTRL STARTER STARTER FUSE 33 UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BATTERY BLK WIRE BODY CONTROL MODULE (BCM) (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) CLASS 2 SERIAL CLASS 2 SERIAL DATA CLSTR FUSE COMPUTER DATA LINES SYSTEM DK BLU WIRE DOOR LOCKS SYSTEM DRV DR LK SW UNLOCK SIG GROUND GRY WIRE HAZRD FUSE HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) INSTRUMENT PANEL CLUSTER (IPC) LID AJAR SWITCH LOGIC LT BLU WIRE LT GRN WIRE MESSAGE CENTER ORG/ WIRE ORG/BLK WIRE PAS DR LK SW UNLK SIG PNK WIRE REAR COMPARTMENT LID LATCH (IN REAR COMPT LID) RED/BLK WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) TRUNK AJAR IND TRUNK OPEN TRUNK RELEASE CONTROL

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

3.6L 3.8L BATTERY BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) CLASS 2 SERIAL DATA DELAY SWITCH DK GRN WIRE GRN WIRE GROUND GRY WIRE HIGH PPL HOT AT ALL TIMES IGN LOGIC INSTRUMENT PANEL CLUSTER (IPC) LOW WASH INDICATOR LOW WASHER FLUID IND SIG LT BLU WIRE LT GRN WIRE MESSAGE CENTER LOW WASHER FLUID MESSAGE REQUEST MIST OFF ORG/ WIRE PARK SW SIG PARK SWITCH PNK WINDSHIELD WASHER SW SIG WIRE PNK WIRE PPL DK RED WIRE SPLICE PACK TAN WIRE TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) WASHER PUMP CTRL WASHER SWITCH WASHER/ RVC FUSE 6 WHT WIRE WINDSHIELD WASHER FLUID LEVEL SWITCH WINDSHIELD WIPER MOTOR (ON LEFT SIDE OF FIREWALL) WINDSHIELD WIPER SW HI SIG WINDSHIELD WIPER SW HIGH SIG WINDSHIELD WIPER SW LOW SIG WINDSHIELD WIPER SWITCH WIPER HI RELAY 44 WIPER RELAY 45 WIPER RLY CTRL WIPER/ WS FUSE 5 YEL WIRE