Buick LeSabre VIII (2000-2005) red/blk Wiring diagrams

1-2 SHIFT SOL 2-3 SHIFT SOL AUTOMATIC TRANSAXLE AUTOMATIC TRANSAXLE FLUID TEMPERATURE SENSOR AUTOMATIC TRANSAXLE INPUT SHAFT SPEED SENSOR AUTOMATIC TRANSAXLE INTERNAL MODE SWITCH BLK WIRE BLK/WHT WIRE BONNEVILLE LE SABRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE FUSE 12 GRN WIRE GRY WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT IN RUN OR START IGN 1 FUSE IGNITION SWITCH (PIGTAILED FOR LE SABRE) INSTRUMENT CLUSTER INSTRUMENT CLUSTER, TURN SIGNAL SWITCH LE SABRE LOCK LOCK OFF LOGIC IGN 1 IGN LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE MALFUNC- TION IND LAMP MALFUNCTION INDICATOR LAMP OFF ORG/ WIRE PCM IGN FUSE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (NEAR AIR CLEANER HOUSING) PPL PPL CRUISE CONTROL SYSTEM PPL PPL PPL COMPUTER DATA LINES SYSTEM PRESSURE CONTROL SOL TCC PWM SOL REAR FUSE BLOCK RED WIRE RED/BLK WIRE RUN WIRE STOP LAMP SWITCH (NEAR BRAKE PEDAL) TCC/ CRUISE SWITCH THROTTLE POSITION (TP) SENSOR (ON THROTTLE BODY ASSEMBLY) TRANS FUSE UNDER- HOOD FUSE BLOCK PCM BATT FUSE WHT WIRE YEL WIRE YEL/BLK WIRE

26 39 27 35 34 ECT SENS SIG CLUTCH RLY CTRL SENSOR SIGNAL SENSOR GRD A/C CLU RELAY 32 A/C COMPRESSOR CLUTCH DIODE A/C COMPRESSOR CLUTCH A/C REFRIGERANT PRESSURE SENSOR (BEHIND A/C COMPRESSOR, ON A/C LINE) BLK WIRE BLK/WHT WIRE BLOWER CONTROL PROCESSOR (AT RIGHT FRONT SIDE OF BLOWER MOTOR) BLOWER MOTOR (UNDER RIGHT SIDE OF DASH, ABOVE SOUND INSULATOR) BLWR SP INPUT BATTERY GRD BLWR MTR GRD SPEED CNTL BLWR VOLT BRN WIRE CNTL SIG COMPUTER DATA LINES SYSTEM COOL FAN 1 FUSE 47 COOL FAN 2 FUSE 46 COOLFAN 1 (LOW SPEED) RELAY 40 COOLFAN 2 (HIGH SPEED) RELAY 37 COOLFAN S/P RELAY 39 DASH INTEGRATION MODULE (DIM) (BEHIND RIGHT SIDE OF DASH, UNDER SOUND INSULATOR) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE SENSOR (ON REAR OF ENGINE, NEAR THERMOSTAT HOUSING) GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN ON INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LEFT COOLING FAN LT BLU WIRE ORG/ WIRE PASSENGER TEMPERATURE CONTROL ASSEMBLY PDM LOW SIDE INPUT PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER HOUSING) PPL PPL PPL RED/BLK WIRE RIGHT COOLING FAN RIGHT SIDE STEERING WHEEL CONTROLS SOUND SYSTEMS SPLICE PACK STEERING COLUMN FUSE HOLDER SUPPLY SW GRD SWITCH FUSE TAN WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) A/C CLU FUSE 26 WHT WIRE YEL WIRE

39 27 35 34 CLUTCH RLY CTRL SENSOR SIGNAL LOW REF A/C CLU FUSE 26 A/C CLU RELAY 32 A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH DIODE (NEAR A/C COMPRESSOR) A/C REFRIGERANT PRESSURE SENSOR (BEHIND A/C COMPRESSOR, ON A/C LINE) BLK WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROLS SYSTEM GRY WIRE HOT AT ALL TIMES HOT IN ON POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER HOUSING) PPL PPL 1807 1807 58 59 CLASS 2 SERIAL CLASS 2 SERIAL RED/BLK WIRE SPLICE PACK UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPARTMENT)

1 3 4 6 7 8 KEY CYL IN DOOR AJAR GROUND ACTUATOR DR ACTUATOR DR GROUND 4 5 6 11 14 15 GROUND LOCK UNLOCK' BATTERY GROUND SBI 6 7 8 9 10 UNLOCK LOCK GROUND BATTERY SBI AIR CONDITIONING SYSTEMS AJAR AJAR CYLINDER SWITCH BATTERY GROUND BLK WIRE BLK/WHT WIRE COMPUTER DATA LINES SYSTEM CYLINDER SWITCH DK BLU WIRE DOOR OPEN DOOR AJAR GROUND SIB GROUND ACTUATOR DR ACTUATOR DR BATTERY DRIVER DOOR LOCK ACTUATOR DRIVER DOOR LOCK SWITCH DRIVER DOOR MODULE DRIVER DOOR SWITCH ASSEMBLY DRVMDL FUSE 7 FRONT PASSENGER DOOR LOCK ACTUATOR FRONT PASSENGER DOOR MODULE GRD GRN WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES IGN SW FUSE 29 LEFT REAR DOOR LOCK ACTUATOR LEFT REAR DOOR MODULE LOCK LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PASS MDL FUSE 25 PASSENGER DOOR LOCK SWITCH PPL PWR WDO CIRCUIT BREAKER 57 REAR FUSE BLOCK RED/BLK WIRE REMOTE CONTROL DOOR LOCK RECEIVER (BELOW REAR SHELF) RIGHT REAR DOOR LOCK ACTUATOR RIGHT REAR DOOR LOCK ACTUATOR LEFT REAR DOOR LOCK ACTUATOR RIGHT REAR DOOR MODULE RRDR MDL FUSE 18 SBI GROUND BATTERY BATTERY SBI GROUND CLASS 2 DATA SEATS SYSTEM SERIAL DATA TAN WIRE TAN/WHT WIRE UNLOCK WHT WIRE YEL WIRE

26 39 27 35 34 ECT SENS SIG CLUTCH RLY CTRL SENSOR SIGNAL LOW REF A/C CLU RELAY 32 A/C COMPRESSOR CLUTCH DIODE (NEAR A/C COMPRESSOR) A/C COMPRESSOR CLUTCH A/C REFRIGERANT PRESSURE SENSOR (BEHIND A/C COMPRESSOR, ON A/C LINE) BLK WIRE COMPUTER DATA LINES SYSTEM COOL FAN 1 FUSE 47 COOL FAN 2 FUSE 46 COOLFAN 1 (LOW SPEED) RELAY 40 COOLFAN 2 (HIGH SPEED) RELAY 37 COOLFAN S/P RELAY 39 DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROLS SYSTEM GRY WIRE HOT AT ALL TIMES HOT IN ON LEFT COOLING FAN MOTOR LT BLU WIRE POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER HOUSING) PPL PPL RED/BLK WIRE RIGHT COOLING FAN MOTOR SPLICE PACK UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPARTMENT) A/C CLU FUSE 26 WHT WIRE YEL WIRE

BLK WIRE BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM EXTERIOR LIGHTS SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ELECTRONIC SUSPENSION SYSTEM INTERIOR LIGHTS SYSTEM GRD GRY WIRE HEATED SEAT STATUS SIG ALC POSITION SENSOR LOW REF PPL HOT AT ALL TIMES HOT IN RUN OR START IGN 1 FUSE IGN 1 RELAY IGN SW FUSE INTERIOR LAMP CTRL INTERIOR LIGHTS SYSTEM ELECTRONIC SUSPENSION SYSTEM LT BLU WIRE LT BLU/WHT WIRE ORG/ WIRE PARK BRAKE RLY CTRL CIGAR LIGHTER RLY CTRL ALC RLY COIL SUPLY VOLTAGE PASSR HTD SEAT CTRL STATUS REAR COMPT AJAR SW SIG PNK IGNITION 1 VOLTAGE INADVERTANT POWER INPUT WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM POWER DISTRIBUTION SYSTEM (RAP) SEATS SYSTEM PPL PPL CLASS 2 SERIAL DATA RAP RLY CTRL REAR FUSE BLOCK (UNDER LEFT REAR SEAT) REAR INTEGRATION MODULE (RIM) (BEHIND UPPER LEFT REAR SEAT CUSHION) RED/BLK WIRE SEATS SYSTEM ELECTRONIC SUSPENSION SYSTEM SEATS SYSTEM INTERIOR LIGHTS SYSTEM SPLICE PACK TAN WIRE WHT WIRE YEL WIRE

1744 808 FUEL INJ 1 CONTROL SENSOR RETURN (EOP) 400 401 PPL ANTI-LOCK BRAKE SYSTEM 43 44 FUEL INJ 6 CONTROL SHIFT SOL B CONTROL 46 47 48 FUEL INJ 4 CONTROL FUEL INJ 5 CONTROL REFERENCE LOW 772 492 TRANS RANGE SW B MAF SENSOR INPUT BLK WIRE BLK/WHT WIRE BLU WIRE BONNEVILLE LE SABRE BRN/WHT WIRE BYPASS CKP SYNC SIG CMP OUTPUT CMP SIGNAL COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM CRUISE CONTROL SYSTEM DESIRED TORQUE INPUT CRUISE DISABLE/INHIBIT FUEL INJ 2 CONTROL DIS FUSE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/ WHT WIRE DK GRN/WHT WIRE ECT SENSOR GROUND MAP SENSOR GROUND GROUND GRY WIRE HOT AT ALL TIMES HOT IN RUN, START IAC COIL B HIGH 39 40 41 42 IGN CONTROL IGN VOLTAGE IGNITION IGNITION BATTERY IGNITION CONTROL MODULE (ICM) (ON TOP LEFT FRONT OF ENG) IGNITION SWITCH (PIGTAILED FOR LE SABRE) INSTRUMENT CLUSTER SYSTEM (VEHICLE SPEED) KNOCK SENSOR (KS) BANK 2 (ON LOWER REAR OF ENG BLOCK, NEAR OIL FILTER) LOCK OFF LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MAP SENSOR +5 V MASS AIRFLOW (MAF) SENSOR (TOP OF THROTTLE BODY) NOT USED ORG/ WIRE ORG/BLK WIRE PCM GROUND IAT SENSOR GROUND PNK (OR PNK) WIRE PNK (OR PNK/BLK) WIRE PNK PNK 9 10 WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER HOUSING) PPL PPL PPL PPL TCC SWITCH INPUT EGR POS SENS GROUND EGR CONTROL GROUND PPL/WHT WIRE PURGE SOLENOID (TOP OF ENGINE) RED/BLK WIRE REF LOW RUN WIRE SHIFT SOL A CONTROL HI SPEED COOL FAN LO SPEED COOL FAN CMP INPUT TAN WIRE TAN/BLK WIRE TRANS FUSE UNDER- HOOD FUSE BLOCK PCM BATT FUSE VEHICLE SPEED SENSOR (RIGHT FRONT OF TRANSAXLE) EVAPORATIVE EMISSIONS CANISTER WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

2-3 SHIFT SOL 1-2 SHIFT SOL AUTOMATIC TRANSAXLE AUTOMATIC TRANSAXLE FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSAXLE FLUID TEMPERATURE SENSOR AUTOMATIC TRANSAXLE INPUT SHAFT SPEED SENSOR AUTOMATIC TRANSAXLE INTERNAL MODE SWITCH BLK WIRE BLK/ WHT WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION (CMP) SENSOR (FRONT OF ENG, BELOW WATER PUMP) CRANKSHAFT POSITION DK BLU/WHT WIRE FUEL INJEC- TORS GRN WIRE GRY WIRE GRY/WHT WIRE HOT IN RUN, START IGN 1 FUSE INJR 1 FUSE INJR 2 FUSE LT BLU WIRE LT BLU/ BLK WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/ BLK WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE ORG/BLK WIRE PNK (OR WIRE PNK PNK 9 10 WIRE PNK WIRE PNK/BLK WIRE PPL PPL CRUISE CONTROL SYSTEM PPL PRESSURE CONTROL SOL REAR FUSE BLOCK RED WIRE RED/BLK WIRE TAN WIRE TCC PWM SOL TCC RELEASE SWITCH TCC/ CRUISE RELEASE SWITCH (NEAR BRAKE PEDAL) UNDER- HOOD FUSE BLOCK WHT DK GRN/ WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BLK/WHT WIRE BONNEVILLE INSTRUMENT CLUSTER MALFUNCTION INDICATOR LAMP (LED FOR BONNEVILLE) BONNEVILLE LE SABRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE EXHAUST GAS RECIRCULATION (EGR) VALVE (TOP REAR OF ENGINE) F/PMP FUSE FUEL PUMP RELAY IGN-1 FUSE FUEL TANK UNIT FUEL PUMP FUSE GRY (OR GRY/BLK) WIRE GRY WIRE HOT AT ALL TIMES HOT IN RUN, START LE SABRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/WHT WIRE MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR (TOP OF ENGINE) ORG/BLK WIRE PNK (OR PNK/BLK) WIRE PNK 1 2 3 4 5 6 7 8 9 10 11 12 WIRE PNK WIRE PNK/BLK WIRE REAR FUSE BLOCK RED/BLK WIRE STOPLIGHT/ AUTO TRANS SHIFT LOCK CONTROL SWITCH TACH INPUT TAN WIRE TAN/WHT WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

5 VOLT REFERENCE A 5 VOLT REFERENCE A 5 VOLT REFERENCE B SENSOR GROUND A/C COMP RELAY CONTROL A/C SYSTEM A/T FLUID TEMP INPUT FUEL LEVEL INPUT ANTI-LOCK BRAKE SYSTEM BLK WIRE BLK/WHT WIRE BOOST CONTROL SOLENOID (VIN 1) BRN WIRE BRN/WHT WIRE CRUISE CONTROL SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENG OIL LEVEL SW INPUT CRUISE STATUS BRAKE PEDAL SW OUT GEN TERM L CONTROL ENGINE COOLANT TEMPERATURE (ECT) SENSOR EVAP SOLENOID CONTROL FUEL PUMP RELAY CONTROL EGR VALVE CONTROL MIL CONTROL EVAPORATIVE EMISSIONS (EVAP) CANISTER VENT VALVE FUEL INJ 3 CONTROL FUEL TANK PRESS SENSOR TRANS RANGE SW C INPUT FUEL TANK SENDER GRY (OR GRY/BLK) WIRE GRY WIRE HEATED OXYGEN BANK 1 SENSOR 1 (IN RIGHT EXHAUST MANIFOLD) HEATED OXYGEN BANK 1 SENSOR 2 (REAR OF CATALYTIC CONVERTER) HOT IN RUN AND START HOT IN RUN, START IAC COIL A HIGH TACH SIGNAL DELIVERED TORQUE CONTROL IAC COIL A LOW PRESS SOL HIGH CONTROL PRESS SOL LOW CONTROL IAC COIL B LOW IAT SENSOR INPUT IDLE AIR CONTROL (IAC) VALVE (ON THROTTLE BODY ASSEMBLY) IGN 1 FUSE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE OIL PRESSURE SIGNAL OXY SEN FUSE PCM IGN FUSE PNK (OR PNK/BLK) WIRE PNK 1 2 3 4 5 6 7 8 9 10 11 12 WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER HOUSING) PPL PPL PPL REAR FUSE BLOCK RED WIRE RED/BLK WIRE STARTER RELAY OUTPUT BOOST SOLENOID CONTROL TCC PWM SOL CONTROL 1724 418 STARTING/CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TOP OF TRANSMISSION) TRANS RANGE SW A INPUT TRANS TCC RELEASE SW IN UNDER- HOOD FUSE BLOCK VENT SOL FUSE WHT WIRE YEL WIRE YEL/BLK WIRE