Buick LaCrosse I (2004-2009) pcm fuse 15 Wiring diagrams

1-2 SHIFT SOLENOID VALVE 18 19 20 IGNITION 3 IGNITION 1 BATTERY PNK WIRE 2-3 SHIFT SOLENOID VALVE 30 34 73 LOW REF 5 VOLT REF 1 GROUND A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH A/T FLUID TEMP- ERATURE SENSOR AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BRN WIRE CODE A CODE B CODE C DK BLU/WHT WIRE DK GRN WIRE ECT SENSOR SIG GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START IGNITION SWITCH INPUT SHAFT SPEED SENSOR LOCK LOW REF LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP RIGHT SIDE OF MAP SENSOR SIG ORG/ WIRE ORG/BLK WIRE PARITY PCM FUSE 15 PCM/ ETC FUSE 16 PNK WIRE PPL PPL VSS SIG LOW PRESSURE CONTROL SOLENOID VALVE RED WIRE RED/BLK WIRE RUN WIRE TAN WIRE TAN/BLK WIRE TORQUE CONVERTER CLUTCH SOLENOID VALVE TRANS SOL FUSE 21 TRANSMISSION INTERNAL MODE SWITCH UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) VEHICLE SPEED SENSOR (RIGHT SIDE OF TRANSMISSION, NEAR RIGHT AXLE SHAFT) VSS SIG HIGH WHT WIRE YEL WIRE YEL/BLK WIRE

1-2 SHIFT SOLENOID VALVE 12 VOLT REFERENCE IGNITION 3 VOLTAGE 2-3 SHIFT SOLENOID VALVE 3.6L 3.6L 3.8L 3.8L A/C CLUTCH FUSE 13 A/C COMP RELAY 38 ABS FUSE 23 AUTOMATIC A/C PNK PNK WIRE AUTOMATIC TRANSMISSION AUX PWR FUSE 10 AUXILIARY POWER OUTLET BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE BODY CONTROL MODULE (BCM) BRN WIRE CIGAR LIGHTER CRANK RELAY 48 CRANK VOLTAGE CRUISE FUSE ENGINE CONTROL MODULE (ECM) ENGINE POWERTRAIN CONTROL CONTROL MODULE MODULE (ECM) (PCM) FROM IGN 1 RELAY (DIAGRAM 2 OF 4) FROM WASHER/RVC FUSE 6 (DIAGRAM 1 OF 4) HVAC CONTROL MODULE AUTOMATIC A/C MANUAL A/C I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) IGN 1 RELAY 37 IGNITION 1 VOLTAGE IGNITION SWITCH INFLATABLE ELECTRONIC RESTRAINT COMPASS SENSING, MODULE DIAGNOSTIC MODULE INFLATABLE RESTRAINT PASSENGER AIR BAG ON/OFF INDICATOR INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL INSIDE AIR TEMPERATURE SENSOR KEY IN IGNITION SWITCH SIGNAL KEY-IN IGNITION SWITCH LOCK LT GRN WIRE NCA WIRE ORG/ WIRE P/TRAIN RELAY 40 PCM FUSE 15 PNK PNK PNK W/ PARK ASSIST WIRE PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) RED WIRE RUN WIRE SIR FUSE 9 DISPLAY FUSE 18 STEERING ANGLE SENSOR (W/ ABS) TCM FUSE 8 TO A/C CLUTCH FUSE (DIAGRAM 2 OF 4) TO ETC FUSE 17 (DIAGRAM 3 OF 4) TO FAN 2 FUSE (DIAGRAM 3 OF 4) TORQUE CONVERTER POWERTRAIN CLUTCH CONTROL (TCC) MODULE SOLENOID (PCM) VALVE TRANS SOL FUSE 21 TRANSMISSION CONTROL MODULE (TCM) TRANSMISSION CONTROL MODULE (TCM) (3.6L) UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) 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

18 19 PPL BLK WIRE BLK/WHT WIRE BRN WIRE CNSTR FUSE DK GRN WIRE DK GRN/WHT WIRE ELEK IGN FUSE 24 FUEL INJ FUSE 20 EMIS- SION FUSE 12 SSR FUSE 14 ETC FUSE 17 FUEL PP FUSE 22 FUEL PUMP RELAY GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) IGN 1 RELAY IGNITION COIL 1 IGNITION COIL 2 IGNITION COIL 3 IGNITION COIL 4 IGNITION COIL 5 IGNITION COIL 6 LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE P/TRAIN RELAY PCM FUSE 15 PCM/ETC FUSE 16 PNK PPL WIRE PNK WIRE PNK/BLK WIRE PPL PPL 18 19 SPARK PLUG TAN WIRE TAN/WHT WIRE UNDER- HOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) WHT DK GRN/ WIRE WHT/ BLK WIRE WHT/BLK WIRE YEL WIRE

12 2 1 B+ CLASS 2 GND IGN 5-VOLT REF 1 5-VOLT REF 2 A/C PRESS SIG STOP LAMP SW A/C CLUTCH RELAY RELAY CTRL AIR CONDITIONING SYSTEM BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CLASS 2 DATA CLSTR FUSE COOLING FANS SYSTEM CRUISE CONTROL SYSTEM DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE COMPARTMENT, NEAR AIR CLEANER ASSEMBLY) EVAP VENT SOL FUEL PUMP RELAY FUEL PUMP, SENDER ASSEMBLY FUEL TANK DK FUEL TANK PRESS FUEL TANK PRESSURE SENSOR GRN WIRE GRY WIRE HIGH FAN HOT AT ALL TIMES HOT IN RUN OR START I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) IGNITION SWITCH INSTRUMENT PANEL CLUSTER LOCK LOGIC LOW FAN LOW REF MALFUNCTION INDICATOR LAMP (MIL) MIL CONTROL LOW REF LOW REF NAVIGATION SYSTEM NCA WIRE ORG/ WIRE PCM FUSE 15 PNK WIRE POWERTRAIN CONTROL MODULE (LEFT SIDE OF PPL PPL FUEL LEVEL SIG CRUISE SIG RED/BLK WIRE RUN WIRE STARTING/CHARGING SYSTEM UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) WHT WIRE YEL/BLK WIRE