Chevrolet Blazer S15 facelift (1998-2005) org/ Wiring diagrams

2.2L 4.3L ABS FUSE ANTI-LOCK INDICATOR AXLE SWITCH SIG VSS LF WHL SPD SENS SIG RF WHL SPD SENS REF AXLE SWITCH SIGNAL BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (UNDER DASH, ON HEATER CASE) BRAKE FLUID LEVEL SWITCH (ON MASTER CYLINDER) BRAKE FLUID LVL SIG BRAKE WARNING INDICATOR BRN WIRE CLASS 2 COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DK GRN WIRE FRONT AXLE INDICATOR SWITCH (AT FRONT AXLE, TO RIGHT OF DIFFERENTIAL) GROUND BATTERY GRY WIRE HOT AT ALL TIMES HOT IN RUN ABS FUSE 22 I/P FUSE BLOCK (ON LEFT END OF DASH) IGNITION 3 LF WHL SPD SENS REF RF WHL SPD SENS SIG INSTRUMENT CLUSTER LEFT FRONT WHEEL SPEED SENSOR LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE POWERTRAIN CONTROL MODULE (PCM) (ON RIGHT FRONT OF ENGINE COMPT) PPL PUMP MOTOR RDO BATT FUSE 19 RED WIRE RIGHT FRONT WHEEL SPEED SENSOR SPLICE PACK STOPLIGHT SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) TAN WIRE TCC BRAKE SWITCH SIG SERIAL DATA UNDERHOOD FUSE BLOCK UNDERHOOD FUSE BLOCK (ON TOP OF LEFT FRONT INNER WHEELWELL) VEHICLE SPEED SIGNAL W/ ELECTRIC SHIFT CONTROL (2 SPEED) WIPER/ WASHER SYSTEM YEL WIRE YEL/BLK WIRE

AMBIENT LIGHT SENSOR (ON TOP LEFT SIDE OF DASH) ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM REMOTE KEYLESS ENTRY CIRCUIT BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (UNDER DASH, ON HEATER CASE) BRN WIRE COURTESY LAMP SW SIG FLASH-TO-PASS SW SIG CRUISE FUSE 3 DK BLU WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM DRL RELAY CTRL CLASS 2 SERIAL DATA SIGNAL GROUND IGNITION 1 VOLTAGE EXTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM EXTERIOR PARK LAMPS SUPPLY VOLTAGE GAUGES FUSE 4 GMCM SERIAL DATA GROUND BATTERY POSITIVE VOLTAGE DOOR UNLOCK CTRL DOOR LOCK CTRL GRY WIRE GRY/BLK WIRE HEADLAMP HI BEAM RELAY CTRL HLP DIMMER SW HI BEAM SIG HEADLAMP OFF SIG HEADLAMP RELAY COIL SUPPLY VOLTAGE LED DIMMING SIGNAL VEHICLE SPEED SENSOR SIG HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM COMPUTER DATA LINES SYSTEM HEADLIGHTS SYSTEM INTERIOR LIGHTS SYSTEM ENGINE CONTROLS SYSTEM HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START HOT WITH HEADLAMP SWITCH IN HEAD OR PARK I/P FUSE BLOCK (LEFT END OF DASH) I/P LAMP FUSE SUPPLY VOLTAGE AMBIENT LIGHT SENSOR SIG IGNITION KEY ALARM SWITCH (PART OF IGNITION SWITCH) INSTRUMENT CLUSTER SYSTEM INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM LEFT FRONT TURN SW SIG RIGHT FRONT TURN SW SIG LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PARK BRAKE SWITCH (AT BASE OF PARK BRAKE ASSEMBLY) PARK LP FUSE 5 PNK WIRE PNK/BLK WIRE POWER DISTRI- BUTION SYSTEM (W/ REMOTE KEYLESS ENTRY) POWER DISTRIBUTION SYSTEM (RAP) INTERIOR LIGHTS SYSTEM HORNS SYSTEM PPL PPL/WHT WIRE RAP RELAY COIL CTRL INTERIOR LAMP RELAY COIL CTRL HORN RELAY CTRL RED/WHT WIRE SECURITY SYSTEM SENSOR SIG SPLICE TAN WIRE TBC FUSE (ON TOP OF LEFT FRONT INNER WHEELWELL) UNDERHOOD FUSE BLOCK WARNING SYTEMS TRANSMISSION SYSTEM WHT WIRE YEL WIRE

2.2L 4.3L 59 58 58 59 CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (UNDER DASH, ON HEATER CASE) BODY RELAY BLOCK (BEHIND LEFT SIDE OF DASH, NEAR DASH FUSE BLOCK) BRN/WHT WIRE CIGAR LTR FUSE CLASS 2 SERIAL DATA DATA LINK CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER GROUND DISTRIBUTION SYSTEM GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (ON LEFT END OF DASH) INSTRUMENT PANEL CLUSTER LT BLU WIRE LT GRN WIRE MEMORY SEAT MODULE (UNDER LEFT FRONT SEAT) (IF EQUIPPED) ORG/ WIRE POWERTRAIN CONTROL MODULE (PCM) (ON RIGHT SIDE OF ENGINE COMPARTMENT) PPL PPL 2 1 RADIO TRANSFER CASE SHIFT CONTROL MODULE UNDERHOOD FUSE BLOCK (ON TOP OF LEFT FRONT INNER WHEELWELL) W/ TRIP COMPUTER W/ TWO SPEED ELECTRONIC CONTROL YEL WIRE

BLK WIRE BRN WIRE DRIVER OUTSIDE REAR- VIEW MIRROR FRONT PASSENGER OUTSIDE REARVIEW MIRROR GRY WIRE HOT AT ALL TIMES HOT IN RUN I/P FUSE BLOCK (ON LEFT END OF DASH) HVAC 1 FUSE 21 HOT IN RUN, START HTD MIRROR FUSE RR DEFOG FUSE HVAC CONTROL ASSEMBLY IGN E FUSE ILL NCA WIRE ON LED ORG/ WIRE PPL REAR WINDOW DEFOGGER GRID REAR WINDOW DEFOGGER RELAY SPLICE PACK TIMER CIRCUIT UNDERHOOD FUSE BLOCK (ON TOP OF LEFT FRONT FENDER) UTILITY VEHICLES ONLY WHT WIRE

2 DOOR UTILITY PICKUP W/ PWR DOOR LOCKS 4 DOOR UTILITY 80 1303 727 (UTILITY) BLK WIRE BODY CONTROL MODULE (UNDER DASH, ON HEATER CASE) DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) PPL DK BLU WIRE DK BLU/WHT WIRE DRIVER DOOR JAMB SWITCH DRIVER DOOR LOCK CYLINDER SWITCH FR HANDLE SW KEY SW SIG DRV DR SWITCH FRONT PASSENGER DOOR JAMB SWITCH FRONT PASSENGER DOOR LOCK CYLINDER SWITCH GROUND BATTERY SERIAL DATA GROUND HORN RELAY GRY WIRE HORNS SYSTEM HOT AT ALL TIMES IGNITION KEY ALARM SWITCH INSTRUMENT PANEL CLUSTER KEY IN IGN LIFTGATE SW DOOR SW SIG LEFT REAR SIDE DOOR JAMB SWITCH LT GRN WIRE ORG/ WIRE PICKUP PNK WIRE PNK/BLK WIRE PPL REAR WINDOW WIPER CUTOUT, LIFTGLASS AJAR JAMB SWITCH RIGHT DOOR HANDLE SWITCH RIGHT REAR SIDE DOOR JAMB SWITCH SECURITY INDICATOR SPLICE PACK TAN WIRE TBC FUSE UNDERHOOD FUSE BLOCK UTILITY/CREW CAB WHT WIRE

A/C A/C COMP RLY CTRL A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH DIODE A/C COMPRESSOR CLUTCH RELAY A/C COMPRESSOR HIGH PRESSURE SWITCH (ON REAR OF A/C COMPRESSOR) A/C CYCLING SW SIGNAL A/C FUSE A/C LOW PRESSURE SWITCH (AT A/C ACCUMULATOR) A/C REQUEST SIGNAL AIR PUMP, 20 CM FROM AIR PUMP CONNECTOR) AIR TEMPERATURE ACTUATOR (BEHIND RIGHT SIDE OF DASH, ON HEATER CASE) BLEND BLK WIRE BLK/ WHT WIRE BLK/WHT WIRE BLOWER MOTOR (ON RIGHT REAR OF ENGINE COMPARTMENT) BLOWER MOTOR RELAY (ON CENTER REAR OF ENGINE COMPARTMENT) BLOWER MOTOR RESISTOR (ON RIGHT REAR OF ENGINE COMPARTMENT, ON BLOWER MODULE) BLOWER SWITCH BRN WIRE DEF DK BLU WIRE DK GRN WIRE DK GRN/ WHT WIRE DK GRN/WHT WIRE GRY WIRE HEAT BI-LEVEL A/C VENT HEATER, A/C CONTROLLER HOT AT ALL TIMES HOT IN PARK, HEAD HOT IN RUN HOT IN RUN, START HVAC 1 FUSE 21 HVAC FUSE HVAC FUSE 9 I/P FUSE BLOCK (ON LEFT END OF DASH) IGN E FUSE ILLUM ILLUM FUSE 12 LOW HIGH MED 1 MED 2 LT BLU WIRE MODE DOOR SWITCH NCA WIRE OFF DEF MAX A/C BLEND NORM HEAT BI-LEVEL VENT OFF MAX A/C ORG/ WIRE PICKUP UTILITY POWER MIRRORS SYSTEM (AUTOMATIC DAY/NIGHT MIRROR) POWERTRAIN CONTROL MODULE (PCM) (ON RIGHT SIDE OF ENGINE COMPARTMENT) PPL SERVO AMPLIFIER TAN WIRE TEMP CONTROL UNDERHOOD FUSE BLOCK (ON TOP OF LEFT FRONT INNER WHEELWELL)

1850 1140 GROUND BATTERY SERIAL DATA GROUND SENSOR PWR 2.2L 4.3L 710 1057 SERIAL DATA SENSOR RET SENSOR SIG BLK WIRE BODY CONTROL MODULE (UNDER DASH, ON HEATER CASE) DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DK GRN/WHT WIRE ENGINE CONTROLS SYSTEM (FUEL PUMP RELAY) HOT AT ALL TIMES LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PASSLOCK SENSOR (AT IGNITION SWITCH) POWERTRAIN CONTROL MODULE (ON RIGHT FRONT OF ENGINE COMPT) PPL RED WIRE RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER (BEHIND LOWER LEFT SIDE OF DASH) SPLICE PACK TBC FUSE UNDERHOOD FUSE BLOCK (ON TOP OF LEFT FRONT INNER WHEELWELL) W/ REMOTE KEYLESS ENTRY WHT WIRE YEL WIRE

29 30 31 PNK WIRE 3-2 SOL LOW REF 5 V REF 5 V REF 5 V REF ABS FUSE 22 BATTERY CLASS 2 DATA CLASS 2 DATA LOW REF LOW REF BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CKP SIG CLSTR FUSE 11 CLUTCH PEDAL POSITION SWITCH (ON CLUTCH PEDAL SUPPORT BRACKET) CRANKSHAFT POSITION SENSOR (FRONT OF ENGINE NEAR CRANKSHAFT PULLEY) DK BLU WIRE DK GRN WIRE GRN WIRE GROUND GRY WIRE HEATED OXYGEN SENSOR (BANK 1 SENSOR 2) (IN EXHAUST, AFTER CATALYTIC CONVERTER) HOT IN OFF, RUN OR START HOT IN RUN I/P FUSE BLOCK INJ 4 CTRL INJ 5 KNOCK SENSOR (TOP REAR OF ENGINE) KS SIG LOW REF GROUND LOW REF LOW REF LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE P/N PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PNK 7 8 WIRE PNK PPL WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (RIGHT FRONT OF ENGINE COMPT) PPL PPL PNK WIRE PPL/WHT WIRE RED WIRE STOPLAMP SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) TAN WIRE TAN/WHT WIRE TRANS SIG A TCC SW TRANS SW P CPP SW INJ 1 INJ 3 PPL TRANS SW B CMP SENS ECT SENS OFF/CRK/RUN INJ 2 INJ 6 TRANS SW B TRANS SW C IGN 1 BATTERY LOW REF WHT WIRE YEL WIRE YEL/BLK WIRE

1-2 SHIFT SOL 2-3 SHIFT SOL 29 30 31 PNK WIRE 3-2 SHIFT SOL AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE CENTRAL SEQUENTIAL FUEL INJECTION DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM I FUSE ENG-I FUSE EVAPORATIVE EMISSION CANISTER PURGE SOLENOID (TOP RIGHT CENTER OF ENGINE) EVAPORATIVE EMISSION CANISTER VENT SOLENOID (REAR OF FUEL TANK) FUEL INJ 1 FUEL INJ 4 FUEL INJ 2 FUEL INJ 5 FUEL INJ 3 FUEL INJ 6 GRY WIRE HOT IN RUN OR START LO SW SW LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE OXYGEN FUSE PNK 25 26 27 28 WIRE PNK 7 8 WIRE PNK PNK PNK 1 2 3 4 5 6 WIRE PNK WIRE PNK/BLK WIRE PPL LT PRESSURE CONTROL SOLENOID VALVE RED WIRE RED/BLK WIRE REV SW AUTOMATIC TRANSMISSION FLUID PRESSURE MANUAL VALVE POSITION SWITCH SW SW TAN WIRE TAN/BLK WIRE TCC PWM SOL TCC SOL TRANSMISSION FLUID TEMPERATURE SENSOR UNDER- HOOD FUSE BLOCK WHT WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (UNDER DASH, ON HEATER CASE) BRN WIRE BRN/WHT WIRE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM-B FUSE ENG SPD FUEL PUMP PRIME CONNECTOR FUEL PUMP RELAY FUEL PUMP, SENDER ASSEMBLY (ON TOP OF FUEL TANK) FUEL TANK PRESSURE SENSOR (TOP OF FUEL TANK) GRY WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM INTAKE AIR TEMPERATURE SENSOR (IN FRESH AIR INTAKE DUCT) LT BLU/WHT WIRE LT GRN WIRE MAF SIG MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP CENTER OF ENGINE) MASS AIRFLOW SENSOR (MAF) (ON AIR INTAKE ASSY) MIL INPUT ORG/ WIRE PICK-UP PNK 25 26 27 28 WIRE PNK PNK PNK 1 2 3 4 5 6 WIRE PNK PNK WIRE PNK WIRE PPL RED WIRE RED/BLK WIRE SPLICE PACK 201 (LEFT SIDE OF DASH) TAN WIRE TAN/BLK WIRE THROTTLE POSITION SENSOR (ON THROTTLE BODY ASSEMBLY) UNDERHOOD FUSE BLOCK UTILITY WHT WIRE YEL WIRE YEL/BLK WIRE