Chevrolet Impala VIII (1999-2006) body control module (behind left side of dash, above parking brake lever) Wiring diagrams

BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BEHIND LEFT SIDE OF DASH, ABOVE PARKING BRAKE LEVER) BRN WIRE DIC/ RKE FUSE DRIVER INFORMATION CENTER EMERGENCY VEHICLE REAR COMPARTMENT LID LAMPS RELAY HOT AT ALL TIMES LEFT EMERGENCY VEHICLE REAR COMPARTMENT LID LAMP LEFT SPOT LAMP LEFT SPOT LMP FUSE NCA WIRE ORG/ WIRE REAR COMPARTMENT LID AJAR SWITCH RED/BLK WIRE RIGHT EMERGENCY VEHICLE REAR COMPARTMENT LID LAMP RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) RIGHT SPOT LAMP RIGHT SPOT LMP FUSE TAN WIRE UNDERHOOD JUNCTION BLOCK (TOP) (ON FRONT OF RIGHT STRUT TOWER) W/ DRIVER INFORMATION DISPLAY CENTER W/ REAR COMPT LID EMERGENCY LAMP PACKAGE YEL WIRE

AJAR SWITCH BCM FUSE BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BEHIND LEFT SIDE OF DASH, ABOVE PARKING BRAKE LEVER) CLASS 2 DATA LINE CLASS 2 SERIAL DATA CLSTR/BCM FUSE DATA DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK LK FUSE DOOR AJAR IN ACCY SIG IN DRIVER DOOR AJAR IN KEY SWITCH SIGNAL EXTERIOR LIGHTS, INTERIOR LIGHTS SYSTEMS FRONT PASSENGER DOOR LOCK CYLINDER SWITCH GRY WIRE HEADLIGHTS SYSTEM HORNS SYSTEM HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ACC, ON OR START HOT IN ON OR START IGNITION LOCK CYLINDER INSTRUMENT PANEL CLUSTER (IPC) KEYLESS ENTRY SERIAL DATA LEFT FRONT DOOR LOCK LEFT FRONT DOOR LOCK CYLINDER SWITCH LEFT FRONT DOOR LOCK SWITCH LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) LEFT REAR DOOR LOCK (INSIDE AJAR SWITCH LEFT REAR DOOR) LH HTD ST/BCM FUSE LOCK LOCK UNLOCK LOGIC LT GRN WIRE MESSAGE CENTER NCA WIRE ORG/ WIRE ORG/BLK WIRE PASSLOCK SENSOR PCM/BCM CLSTR FUSE PNK PNK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER BOX) PPL PPL (LEFT SIDE OF DASH) PPL PPL REAR COMPARTMENT LID AJAR SWITCH RED/BLK WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (ON UPPER CENTER OF DASH) RIGHT FRONT DOOR LOCK RIGHT FRONT DOOR LOCK SWITCH RIGHT I/P JUNCTION BLOCK RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) RIGHT REAR DOOR LOCK SECURITY INDICATOR STOP FUSE UNLOCK W/ SEO WHT WIRE YEL WIRE

1317 1969 FOG LAMP RLY CTRL HEADLAMP RLY CTRL 389 1844 192 VEHICLE SPEED SIG PK BRAKE IND SUPPLY VOLTAGE FRONT FOG LAMP SW SIG 727 74 DOOR OPEN SW SIG PARK LAMP SW SIG 762 43 A/C REQUEST SIG ACCESSORY VOLTAGE AIR CONDITIONING SYSTEM BCM FUSE BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BEHIND LEFT SIDE OF DASH, ABOVE PARKING BRAKE LEVER) BRN/WHT WIRE CLASS 2 SERIAL DATA GROUND GROUND DRL RLY CTRL CLSTR/ BCM FUSE COMPUTER DATA LINES SYSTEM COURTESY LAMP LOW CTRL KEYLESS ENTRY SERIAL DATA IGNITION 0 VOLTAGE COURTESY LAMP RLY CTRL PARK LAMP RLY CTRL BATTERY POSITIVE VOLTAGE CRUISE CONTROL SYSTEM INSTRUMENT CLUSTER SYSTEM HEADLIGHTS SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DOOR LOCKS SYSTEM EXTERIOR LIGHTS SYSTEM DR LK FUSE GRY WIRE HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM DOOR LOCKS SYSTEM HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM HORNS SYSTEM EXTERIOR LIGHTS SYSTEM HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ACC, ON OR START HOT IN ON OR START INTERIOR LIGHTS SYSTEM DOOR LOCKS SYSTEM INTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) LH HTD ST/BCM FUSE LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PCM/BCM CLUSTER FUSE PNK PNK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL PPL RED/BLK WIRE STOP FUSE TAN WIRE TAN/WHT WIRE TRUNK, TAILGATE, FUEL DOORS SYSTEM ANTI-THEFT SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM DOOR LOCKS SYSTEM WHT WIRE YEL WIRE YEL/BLK WIRE

BATT RUNDOWN PROTECTION RELAY BEHIND ACCESS PANEL) BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BEHIND LEFT SIDE OF DASH, ABOVE PARKING BRAKE LEVER) COURTESY LMP RLY CTRL LOW CTRL GROUND CRTSY LMP V DIC/ RKE FUSE DK BLU WIRE DK BLU/WHT WIRE DK DK DOME OFF SURVEILLANCE MODE SWITCH (W/ POLICE PACKAGE, LIMITED CONTENT) HEADLAMP SWITCH PPL HOT AT ALL TIMES I/P BRP FUSE LEFT I/P COURTESY LAMP LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) NCA WIRE ORG/ WIRE PPL MODE SW SIG DOME LMP SW REAR COMPARTMENT LID AJAR SWITCH RED WIRE RED/BLK WIRE RIGHT I/P COURTESY LAMP RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, TO SPLICE TRK/ROOF BRP FUSE WHT WIRE

AJAR AUXILIARY DOME LAMP (POLICE) BLK WIRE BLK/WHT WIRE BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) BODY CONTROL MODULE (BEHIND LEFT SIDE OF DASH, ABOVE PARKING BRAKE LEVER) CLOSED OPEN DK BLU WIRE DK BLU/WHT WIRE DOME LAMP (W/O READING LIGHTS) DOOR AJAR DOOR OPEN DRIVER DOOR LOCK DRIVER DOOR LOCK SWITCH FROM RIGHT I/P JUNCTION BLOCK (DIAGRAM 1 OF 2) FRONT PASSENGER DOOR LOCK FRONT PASSENGER DOOR LOCK SWITCH GRY WIRE INSIDE REAR VIEW MIRROR LEFT COURTESY/ READING LAMP (IF EQUIPPED) LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) LEFT REAR DOOR LOCK (IMPALA) LEFT VANITY MIRROR LAMP (IF EQUIPPED) LMP CNTRL LT BLU/WHT WIRE NCA WIRE RIGHT COURTESY/ READING LAMP (IF EQUIPPED) RIGHT I/P JUNCTION RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) RIGHT REAR DOOR LOCK (IMPALA) RIGHT VANITY MIRROR LAMP (IF EQUIPPED) W/ LIGHTED VANITY, POLICE W/ ONSTAR W/O ONSTAR W/O LIGHTED VANITY, POLICE WHT WIRE

BEHIND ACCESS PANEL) BLK WIRE BLU WIRE BODY CONTROL MODULE (BEHIND LEFT SIDE OF DASH, ABOVE PARKING BRAKE LEVER) BRAKE SW FUSE BRN WIRE BRN/WHT WIRE CENTER HIGH MOUNTED STOP LAMP (CHMSL) CRUISE CONTROL SYSTEM ANTI-LOCK BRAKES SYSTEM DK BLU WIRE DK GRN WIRE DK LT FRONT PARK LP FUSE GRY WIRE HAZ SW FUSE HAZARD HAZARD NORMAL HAZARD SIG SW OUT HAZARD SWITCH HEAD HEADLAMP SWITCH HOT AT ALL TIMES HOT IN RUN OR START ILLUM INSTRUMENT PANEL CLUSTER (IPC) INTERIOR LIGHTS LEFT HEADLAMP LEFT I/P JUNCTION BLOCK LEFT I/P JUNCTION BLOCK (LEFT SIDE LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, LEFT LICENSE LAMP RIGHT LICENSE LAMP LEFT TAIL LAMP PARK TURN/ STOP LEFT TURN INDICATOR LOGIC LEFT TURN INPUT LOGIC LT BLU WIRE OF DASH, BEHIND ACCESS PANEL) OFF ORG/ WIRE PANEL) PARK PARK LP RELAY PARK TURN LEFT FRONT PARK/ TURN LAMP PNK WIRE POWER DISTRIBUTION SYSTEM PPL REAR PARK LP FUSE RED WIRE RIGHT HEADLAMP RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) RIGHT TAIL LAMP PARK TURN/ STOP RIGHT TURN INDICATOR RIGHT TURN INPUT STOPLAMP SWITCH (ON BRAKE PEDAL SUPPORT) TURN PARK RIGHT FRONT PARK/ TURN LAMP TURN SIG SW OUT TURN SIGNAL FUSE TURN SIGNAL/ MULTI- FUNCTION RIGHT SWITCH (IN LEFT STEERING COLUMN) WHT WIRE YEL WIRE

17 18 STOP LMP SIG LR LAMP PWR RR LAMP PWR B/U LMP PWR GROUND ANTI-LOCK BRAKES SYSTEM AUX PWR FUSE BACK-UP LAMPS CIRUIT BACK-UP LAMPS CIRUIT 1750 340 BLK WIRE BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) BLU WIRE BLUNT CUT) BODY CONTROL MODULE (BEHIND LEFT SIDE OF DASH, ABOVE PARKING BRAKE LEVER) BRAKE SW FUSE BRN WIRE BRN/WHT WIRE CENTER HIGH MOUNTED STOP LAMP (CHMSL) RIGHT TAIL LAMP CRUISE CONTROL SYSTEM DK BLU WIRE DK GRN WIRE DK LT EMERGENCY VEHICLE REAR LAMPS FLASHER (UPPER RIGHT FRONT OF REAR COMPARTMENT) FRONT PARK LP FUSE GRN DK WIRE GRY WIRE HAZ SW FUSE HAZARD HAZARD NORMAL HAZARD SIG SW OUT HAZARD SWITCH HEAD HOT AT ALL TIMES HOT AT ALL TIMES UNDERHOOD JUNCTION BLOCK (TOP) RT I/P 1 FUSE HOT IN RUN OR START ILLUM INDICATOR LEFT TURN INDICATOR RIGHT TURN INPUT INSTRUMENT PANEL CLUSTER (IPC) INTERIOR LIGHTS LEFT EMERGENCY VEHICLE REAR WINDOW PANEL LAMP LEFT HEADLAMP LEFT I/P JUNCTION LEFT I/P JUNCTION BLOCK LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) LEFT LICENSE LAMP LEFT TAIL LAMP LEFT TURN LOGIC LT BLU WIRE LT GRN WIRE NCA WIRE OFF HEADLAMP SWITCH ORG/ WIRE PANEL) PARK PARK LP RELAY PARK TURN LEFT FRONT PARK/ TURN LAMP PARK TURN/ STOP PNK WIRE PPL REAR PARK LP FUSE RED WIRE RIGHT (IN LEFT STEERING COLUMN) RIGHT EMERGENCY VEHICLE REAR WINDOW PANEL LAMP RIGHT HEADLAMP RIGHT I/P JUNCTION BLOCK RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) RIGHT LICENSE LAMP RIGHT TURN STOPLAMP SWITCH (ON BRAKE PEDAL SUPPORT) TURN PARK TURN/ STOP RIGHT FRONT PARK/ TURN LAMP TURN SIG SW OUT TURN SIGNAL FUSE TURN SIGNAL/ MULTI-FUNCTION SWITCH WHT WIRE YEL WIRE

AC HEADLAMP RELAY AMBIENT LIGHT SENSOR (TOP RIGHT OF DASH, NEAR DEFOGGER OUTLET) BLK WIRE BLK/WHT WIRE BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) BLUNT CUT WIRE PNK BODY CONTROL MODULE (BEHIND LEFT SIDE OF DASH, ABOVE PARKING BRAKE LEVER) BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN/WHT WIRE DRL RELAY DRL RELAY SERIAL DATA FOG LP RELAY HIGH BEAM IN HEADLAMP RLY DRL/EXT LTS FUSE EMERGENCY VEHICLE HEADLAMPS FLASHER (FORWARD OF RADIATOR SUPPORT) EXT LTS FUSE FOG LAMP INDICATOR FOG LAMP SWITCH FOG LIGHT RELAY FOG LP SW PARK BRAKE IN FOG RLY FUSE GROUND DISTRIBUTION SYSTEM GRY WIRE HEAD HEADLAMP DIMMER SWITCH HEADLAMP SW AL SENS SIG AL SENS REF 1138 1137 HEADLAMP SWITCH HIGH BEAM HIGH BEAM IND MESSAGE CENTER HIGH BEAM OUT HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER (IPC) IPC CLASS 2 SERIAL DATA LEFT FRONT FOG LAMP LEFT HEADLAMP LEFT I/P JUNCTION LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) LOGIC LOW BEAM LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE OFF ORG/ WIRE PARK PARK BRAKE SWITCH (AT BASE OF PARKING BRAKE ASSEMBLY) PNK PNK WIRE PNK WIRE PPL RIGHT FRONT FOG LAMP RIGHT HEADLAMP LOW BEAM TURN SIGNAL/ MULTIFUNCTION SWITCH (IN STEERING COLUMN) UNDERHOOD JUNCTION BLOCK (TOP) YEL WIRE YEL/BLK WIRE

BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BEHIND LEFT SIDE OF DASH, ABOVE PARKING BRAKE LEVER) BRN WIRE FULL BRIGHT GRY WIRE GRY/BLK WIRE HEAD PARK LAMP SWITCH HEADLAMP SWITCH HOT AT ALL TIMES I/P DIMMING SWITCH INT DIM CTRL RELAY CTRL GROUND GROUND GROUND LEFT CRUISE CONTROL (SET/ COAST) LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) LEFT RADIO CONTROL (SEEK/ PRESET) LOW DIM LT BLU WIRE NCA WIRE OFF PARK PARK LAMP RELAY PARK LAMP SWITCH INPUT REAR PARK LMP FUSE RED WIRE RIGHT CRUISE CONTROL (RESUME/ ACCEL) RIGHT I/P 1 FUSE RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) RIGHT RADIO CONTROL (VOLUME/ MODE) STEERING COLUMN FUSE STEERING WHEEL) TO HVAC CONTROL MODULE (DIAGRAM 2 OF 2) TO LEFT I/P JUNCTION BLOCK (DIAGRAM 2 OF 2) UNDERHOOD JUNCTION BLOCK (TOP) (ON FRONT OF RIGHT STRUT TOWER) WHT WIRE

39 26 27 34 COMP CONTROL ECT SIGNAL A/C PRESS SIGNAL 59 5 6 13 80 CLASS 2 SERIAL HIGH SPEED LOW SPEED ECT GROUND LOW REFERENCE A/C CMPR RELAY A/C COMPRESSOR CLUTCH A/C REFRIGERANT PRESSURE SENSOR (ON LEFT SIDE OF ENGINE COMPT, ON LIQUID LINE) A/C REQUEST IND A/C REQUEST SIG A/C REQUEST SWITCH A/C RLY (CMPR) FUSE A/C RLY (COIL) FUSE BATTERY POSITIVE BLK WIRE BLK/WHT WIRE BLOWER MOTOR BLOWER MOTOR (ON RIGHT BOTTOM OF HEATER-A/C ASSEMBLY) BLOWER MOTOR CONTROL PROCESSOR (LOWER RIGHT SIDE OF DASH) BODY CONTROL MODULE (BEHIND LEFT SIDE OF DASH, ABOVE PARKING BRAKE LEVER) BREAKOUT) BREAKOUT) (3.8L (VIN K): LEFT REAR OF ENGINE, 6.5 CM FROM EGR VALVE BREAKOUT) BRN WIRE COMPUTER DATA LINES SYSTEM D TEMP CONTROL SWITCH DEFOG SWITCH DEFOGGER SYSTEM COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DR CTRL A DR CTRL B DR CTRL A DR CTRL B DOOR CTRL A DOOR CTRL B ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE FAN CONT 1 FUSE FAN CONT 1 RELAY FAN CONT 2 RELAY FAN CONT 2, 3 FUSE FAN CONT 3 RELAY GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN ON HVAC BLOWER FUSE HVAC CLASS 2 SERIAL DATA HVAC CLASS 2 SERIAL DATA BATTERY ILLUM LEFT AIR TEMPERATURE ACTUATOR (ON LEFT SIDE OF HEATER- A/C ASSEMBLY) LEFT COOLING FAN (FRONT OF ENGINE COMPT) LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MODE ACTUATOR (LOWER RIGHT SIDE OF DASH) MODE SWITCH NCA WIRE ORG/ WIRE ORG/BLK WIRE OUT SIDE AIR IND OUT SIDE AIR SWITCH P TEMP CONTROL SWITCH PNK IGN 3 VOLT GROUND WIRE PNK WIRE PNK/WHT WIRE POWER DISTRIBUTION SYSTEM PPL REAR DEFOG RLY CTRL RECIRCULATION ACTUATOR RECIRCULATION IND RECIRCULATION SWITCH RED WIRE RED/BLK WIRE RIGHT AIR TEMPERATURE ACTUATOR (ON RIGHT SIDE OF HEATER- A/C ASSEMBLY) RIGHT COOLING FAN (FRONT OF ENGINE COMPT) S121 (3.4L (VIN E)) (FUEL INJECTOR JUMPER SPEED CTRL SPEED CTRL DOOR CTRL POSITION SIG STARTER SUPPLY VOLTAGE TAN WIRE UNDERHOOD JUNCTION BLOCK (TOP) (ON FRONT OF RIGHT STRUT TOWER) VOLTAGE WHT WIRE WHT/BLK WIRE YEL WIRE