Chevrolet Impala VIII (1999-2006) (on transaxle stud, near starter) Wiring diagrams

AUTOMATIC TRANSAXLE B/U LAMP FUSE BACK-UP LAMPS RELAY BACK-UP LP RLY CTRL BLK WIRE BLK/WHT WIRE DIC/RKE FUSE DK BLU WIRE DK GRN WIRE HOT AT ALL TIMES IMS SIG A IMS SIG B LEFT BACK-UP LAMP LT GRN WIRE MIRRORS SYSTEM POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER BOX) RED WIRE RIGHT BACK-UP LAMP RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) SERIAL DATA TRANSAXLE INTERNAL MODE SWITCH WHT WIRE YEL WIRE

AUTOMATIC TRANSAXLE B/U LAMP FUSE B/U LMP PWR BACK-UP LAMPS RELAY BACK-UP LP RLY CTRL BLK WIRE BLK/WHT WIRE DIC/RKE FUSE DK BLU WIRE DK GRN WIRE EMERGENCY VEHICLE REAR LAMPS FLASHER (UPPER RIGHT FRONT OF REAR COMPT) HOT AT ALL TIMES IMS SIG A IMS SIG B LEFT BACK-UP LAMP LT GRN WIRE NCA WIRE POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER BOX) RED WIRE RIGHT BACK-UP LAMP RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) SERIAL DATA TRANSAXLE INTERNAL MODE SWITCH WHT WIRE YEL WIRE

A/C RLY (CMPR) FUSE BATTERY BLK WIRE CLASS 2 SERIAL DATA DATA LINK CONNECTOR (BELOW LEFT SIDE OF DASH, RIGHT OF STEERING COLUMN) PPL DK GRN WIRE FUSIBLE LINK (10 GA- RUST) (FRONT OF ENGINE, ON STARTER SOLENOID) GENERATOR GENERATOR TURN ON SIGNAL GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR START IGN VOLT INSTRUMENT PANEL CLUSTER (IPC) IPC CLASS 2 SERIAL DATA LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) LOGIC MESSAGE CENTER CHARGE IND ORG/ WIRE PCM/BCM/CLSTR FUSE POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER BOX) PPL RED WIRE STARTER SOLENOID UNDERHOOD JUNCTION BLOCK (TOP) (ON FRONT OF RIGHT STRUT TOWER)

55 72 64 VEHICLE SPEED OUT DISABLE OUTPUT VSS HIGH A/C-CRUISE FUSE ANTI-LOCK BRAKES SYSTEM BEHIND ACCESS PANEL) BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LEFT SIDE OF DASH, ABOVE PARKING BRAKE LEVER) BRK SW FUSE BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL MODULE (CCM) (ON LEFT STRUT TOWER) CRUISE CONTROL ON/OFF SWITCH CRUISE CONTROL RELEASE SWITCH (BEHIND LEFT SIDE OF DASH, ON BRAKE PEDAL SUPPORT) CRUISE FUSE CRUISE IND DK BLU WIRE DK GRN WIRE ENGAGED INPUT GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL INSTRUMENT PANEL CLUSTER (IPC) LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) LEFT STEERING WHEEL CONTROLS LOGIC NCA WIRE ORG/ WIRE POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER BOX) PPL PPL VSS LOW RESUME/ ACCEL SWITCH RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, RIGHT STEERING WHEEL CONTROLS SERIAL DATA SET/ COAST SWITCH STOPLAMP SWITCH (ON BRAKE PEDAL SUPPORT) TURN SIGNAL/ MULTIFUNCTION SWITCH (IN STEERING COLUMN) VEHICLE SPEED SENSOR (VSS) (ON RIGHT REAR OF ENGINE COMPT, END OF TRANSAXLE) WHT WIRE YEL WIRE

3.4L 3.8L 3.8L (VIN K), 3.4L A/C COMPRESSOR CLUTCH AUTOMATIC TRANSAXLE BATTERY BLK WIRE BRAKE PRESSURE MODULATOR VALVE (BPMV) CRUISE CONTROL MODULE (CCM) ELECTRONIC BRAKE CONTROL MODULE (EBCM) ENGINE OIL LEVEL SWITCH ENGINE OIL PRESSURE (EOP) SWITCH MASS AIR- FLOW (MAF) SENSOR HEATED OXYGEN SENSOR HORN ASSEMBLY IGNITION CONTROL MODULE (ICM) IGNITION CONTROL MODULE (ICM) A/C COMPRESSOR CLUTCH DIODE LEFT COOLING FAN LEFT FRONT FOG LAMP RIGHT FRONT FOG LAMP LEFT HEADLAMP NCA WIRE POWERTRAIN CONTROL MODULE (PCM) RADIO RIGHT HEADLAMP RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) SENSOR 2 VEHICLE COMMUNICATION INTERFACE MODULE (VCIM) W/ SEO W/O EMERGENCY VEHICLE HANDLAMPS FLASHER W/O SEO WHT WIRE WINDSHIELD WASHER FLUID LEVEL SWITCH WINDSHIELD WASHER FLUID PUMP

3.4L 3.8L A/C-CRUISE FUSE ABS IND. AIR BAG IND AMBIENT AIR TEMPERATURE SENSOR (FRONT OF RADIATOR SUPPORT) AMBIENT TEMP SUNROOF CLOSE SUNROOF SW SUNROOF OPEN BATTERY SERIAL DATA BATTERY BRAKE LVL DATA LINE IGNITION WASH LVL GROUND BLK WIRE BLK/WHT WIRE BOOST GAUGE BRAKE IND BRAKE/ BREAKOUT) BRN WIRE BRN/WHT WIRE CHECK (MALFUNCTION INDICATOR LAMP-MIL) COMPUTER DATA LINES SYSTEM CRUISE IND DASH, BEHIND ACCESS PANEL) DIC/ RKE FUSE DISPLAY DK BLU WIRE DRIVER INFORMATION CENTER (DIC) ENGINE COOLANT TEMPER- ATURE GAUGE ENGINE OIL LEVEL SWITCH (OPEN W/ LOW OIL LEVEL) (3.8L) ENGINE OIL PRESSURE GAUGE FUEL GAUGE FUEL PUMP, SENDER ASSEMBLY FUEL LEVEL SENSOR GND RIGHT TURN INPUT GND LEFT TURN INPUT GRY WIRE HIGH BEAM IND HOT AT ALL TIMES HOT IN HOT IN RUN OR START IGNITION IGNITION GROUND ILLUMINATION (7 BULBS) INSTRUMENT PANEL CLUSTER INTERNAL COMPASS SENSOR (W/O SUNROOF) LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) CLSTR/ BCM FUSE LEFT TURN IND LOGIC LOW REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MESSAGE CENTER MIL CTRL NCA WIRE ODOMETER/ PRNDL DISPLAY OIL LEVEL SWITCH SIGNAL OIL PRESSURE SWITCH SIGNAL ORG/ WIRE PCM/BCM CLSTR FUSE POWER DISTRIBUTION SYSTEM (PASSENGER COMPT, 10 CM POWER TOPS SYSTEM POWERTRAIN CONTROL MODULE (PCM) PPL PPL FUEL LEVEL SENSOR SIGNAL RED WIRE RESET SWITCH RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) RIGHT TURN IND RUN WIRE SEAT BELT IND SERVICE ENGINE SOON IND SPEEDO- METER TACHO- METER TAN WIRE TAN/BLK WIRE TRAC OFF IND VF DISPLAY DRIVER VOLT- METER W/O POLICE WHT WIRE WIPER/ WASHER SYSTEM (OR 685) EXTERIOR LIGHTS SYSTEM YEL WIRE

A/T SHIFT LOCK CONTROL SOLENOID (IN CENTER CONSOLE) A/T SHIFT LOCK CONTROL SOLENOID (IN STEERING COLUMN) AUTOMATIC TRANSAXLE BCM CLASS 2 SERIAL DATA BLK WIRE DK GRN WIRE GRY WIRE HOT IN ON OR START LEFT I/P JUNCTION BLOCK LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) LT GRN WIRE PARKING BRAKE LEVER) PCM CLASS 2 SERIAL DATA PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER BOX) RED WIRE STOP FUSE STOPLAMP SWITCH (ON BRAKE PEDAL SUPPORT) SW SIG A SW SIG B SW SIG C SW SIG P TAN WIRE TRANSMISSION INTERNAL MODE SWITCH W/ CENTER CONSOLE W/O CENTER CONSOLE WHT WIRE YEL WIRE

ABS/PCM FUSE BATTERY BLK WIRE BLU WIRE CLASS 2 SERIAL DATA CRANK RELAY DK GRN WIRE FUSIBLE LINK (10 GA- RUST) (FRONT OF ENGINE, ON STARTER SOLENOID) FUSIBLE LINK (18 GA- GENERATOR HOLD- IN COIL PULL- IN COIL HOT AT ALL TIMES HOT IN ON OR START IGNITION SWITCH LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) ON LOCK OFF PCM (CRANK) FUSE PNK WIRE POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER BOX) PPL PPL CRANK REQUEST CRANK RELAY CTRL RED WIRE STARTER MOTOR STARTER SOLENOID UNDERHOOD JUNCTION BLOCK (TOP) (ON FRONT OF RIGHT STRUT TOWER) YEL WIRE YEL/BLK WIRE

1500 1740 PPL IGNITION BATTERY 1746 1745 453 FUEL INJ 3 FUEL INJ 2 REF LOW 463 83 845 EBCM FEED CRUISE DISABLE FUEL INJ 5 A/T FLUID TEMP BLK WIRE BLK/WHT WIRE BRN/WHT WIRE COOLING FANS SYSTEM CRANKSHAFT POSITION SENSOR B (LOWER RIGHT SIDE OF ENGINE) DFI FUSE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE EVAP PURGE (PIN 77-78 NOT USED) 79 80 846 2751 FUEL INJ 6 A/C PRESS SENS FUEL INJ FUSE FUEL INJECTORS GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN ON OR START IGNITION CONTROL MODULE (TOP CENTER REAR OF ENGINE) LEFT I/P JUNCTION BLOCK (LEFT END OF DASH) ABS/ PCM FUSE LOW REF TCC BRAKE SW EGR SENS EGR CONTROL KNOCK SENS PPL LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MAP SENS (PIN 14-15 NOT USED) 16 17 18 19 20 21 22 451 2760 PCM GROUND IAT SENS ORG/ WIRE ORG/BLK WIRE PCM/BCM CLUSTER FUSE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER BOX) PPL PPL (PIN 66-67 NOT USED) 68 69 70 71 72 73 772 492 TR SWITCH B MAF SENS PPL/WHT WIRE RED/BLK WIRE SPARK PLUGS TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANS SOL FUSE UNDERHOOD JUNCTION BLOCK (BOTTOM) (RIGHT SIDE OF ENGINE COMPT) UNDERHOOD JUNCTION BLOCK (TOP) (RIGHT SIDE OF ENGINE COMPT) PCM FUSE WHT WIRE YEL WIRE YEL/BLK WIRE