Chevrolet Impala VIII (1999-2006) lt blu Wiring diagrams

BLK WIRE DK BLU WIRE DK GRN WIRE DRIVER SEAT ADJUSTER MOTOR ASSEMBLY DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT FRONT VERTICAL MOTOR DRIVER SEAT HORIZONTAL MOTOR DRIVER SEAT REAR VERTICAL MOTOR FORWARD/ FRONT DOWN FRONT PASSENGER SEAT ADJUSTER MOTOR ASSEMBLY FRONT PASSENGER SEAT ADJUSTER SWITCH FRONT PASSENGER SEAT FRONT VERTICAL MOTOR FRONT PASSENGER SEAT HORIZONTAL MOTOR FRONT PASSENGER SEAT REAR VERTICAL MOTOR FRONT UP BACK HOT AT ALL TIMES LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE POWER SEATS CIRCUIT BREAKER REAR DOWN REAR UP REAR UP FRONT DOWN RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) TAN WIRE YEL 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) BODY CONTROL MODULE (BCM) (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 EXT LTS FUSE FOG LAMP INDICATOR FOG LAMP SWITCH FOG LIGHT RELAY FOG LP SW PARK BRAKE IN 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 HIGH BEAM OUT HOT AT ALL TIMES 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 INSTRUMENT PANEL CLUSTER (IPC) LOW BEAM LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MESSAGE CENTER 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 UNDERHOOD JUNCTION BLOCK (TOP) UNDERHOOD JUNCTION BLOCK (TOP) (ON FRONT OF RIGHT STRUT TOWER) UNDERHOOD JUNCTION BLOCK (TOP) FOG RLY FUSE YEL WIRE YEL/BLK 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

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

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

1 2 3 4 BATTERY SERIAL DATA SIG 1940 1344 1840 294 295 139 694 781 1251 TRUNK, TAILGATE, FUEL DOORS SYSTEM B+ GROUND SERIAL DATA SIG IGNITION 0 SERIAL DATA BCM FUSE BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BEHIND LEFT SIDE OF DASH, ABOVE PARKING BRAKE LEVER) CLOSED AJAR OPEN CLSTR/BCM FUSE CTSY DK BLU WIRE DK BLU/WHT WIRE DOOR AJAR IN ACC SIG IN LF DR OPEN IN DOOR LOCK DOWN DR LK FUSE DRIVER DOOR LOCK DRIVER DOOR LOCK CYLINDER SWITCH DRIVER DOOR LOCK SWITCH FRONT PASSENGER DOOR LOCK CYLINDER SWITCH (IF EQUIPPED) FRONT PASSENGER DOOR LOCK SWITCH GROUND GRY WIRE HOT AT ALL TIMES HOT IN ACC, ON OR START HOT IN ON OR ACC HOT IN ON OR START ILLUM ENTRY IMPALA LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) LEFT REAR DOOR LOCK (IMPALA) LH HTD ST/BCM FUSE LOCK LT BLU WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PCM/BCM CLSTR FUSE PNK PNK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL COMPUTER DATA LINES SYSTEM PPL PPL REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (ON UPPER CENTER OF DASH) RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) DIC/RKE FUSE STOP FUSE TAN WIRE UNLOCK UNLOCK LOCK W/ ANTI- THEFT W/ SEO WHT WIRE YEL WIRE

BLK WIRE DEFOGGER SYSTEM DRIVER OUTSIDE REARVIEW MIRROR GRY WIRE HORZ HOT AT ALL TIMES LEFT LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) PWR MIR FUSE LT BLU WIRE LT GRN WIRE NCA WIRE OFF ORG/ WIRE OUTSIDE REARVIEW MIRROR SWITCH PASSENGER OUTSIDE REARVIEW MIRROR PPL/WHT WIRE RED/WHT WIRE RIGHT UP LT VERT WHT WIRE

1-2 SHIFT SOLENOID VALVE 2-3 SHIFT SOLENOID VALVE A/C REFRIGERANT PRESSURE SENSOR (BELOW ACCUMULATOR) AUTOMATIC TRANSAXLE AUTOMATIC TRANSAXLE FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSAXLE INPUT SHAFT SPEED SENSOR AUTOMATIC TRANSAXLE TEMPERATURE SENSOR BLK WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE CRUISE CONTROL MODULE (LEFT STRUT TOWER) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC BRAKE CONTROL MODULE (LEFT REAR OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE (ECT) SENSOR (BELOW COOLANT OUTLET, LEFT REAR OF ENG) GRY (OR GRY/BLK) WIRE GRY WIRE KNOCK SENSOR BANK 1 (LOWER LEFT SIDE OF ENGINE, NEAR STARTER) KNOCK SENSOR BANK 2 (LOWER RIGHT SIDE OF ENGINE) LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/WHT WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (ON INTAKE PLENUM) ORG/BLK WIRE PNK 1 2 3 WIRE PNK WIRE PNK/BLK WIRE PPL PRESSURE CONTROL SOLENOID VALVE RED WIRE RED/BLK WIRE SPLICE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC TCC PULSE WIDTH MODULATION SOLENOID THROTTLE POSITION (TP) SENSOR (ON THROTTLE ASSEMBLY) VEHICLE SPEED SENSOR (RIGHT REAR OF ENGINE COMPT, END OF TRANSAXLE) WHT WIRE YEL WIRE YEL/BLK WIRE