Chevrolet Blazer S15 facelift (1998-2005) underhood fuse block 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 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

2.2L: ENG HARN, 25 CM FROM BREAKOUT TO PCM) 20 CM FROM AIR PUMP CONNECTOR) 4.3L 4.3L 4.3L 4.3L A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH DIODE A/T AMBIENT TEMPERATURE SENSOR (W/ OVERHEAD CONSOLE) BANK 1 SENSOR 2 BARE BARE 2.2L 4.3L BARE BARE BATTERY BLK WIRE BLK/WHT WIRE BODY RELAY BLOCK BRN WIRE CRUISE CONTROL MODULE DATA LINK CONNECTOR (DLC) DAYTIME RUNNING LAMPS (DRL) RELAY DIAGNOSTIC MODULE DRIVER INFORMATION CENTER (DIC) (UTILITY) ELECTRONIC BRAKE CONTROL MODULE FUEL PUMP RELAY HEADLAMP POWER RELAY HEATED OXYGEN SENSOR IGNITION CONTROL MODULE POWERTRAIN CONTROL MODULE (PCM) INFLATABLE RESTRAINT SENSING INSTRUMENT PANEL CLUSTER IPC LEFT FRONT FOG LAMP SIGNAL LAMP LEFT FRONT PARK/ TURN LEFT HORN M/T NCA WIRE POWERTRAIN CONTROL MODULE (PCM) REAR WINDOW WASHER PUMP MOTOR BRAKE FLUID LEVEL SWITCH REMOTE CONTROL DOOR LOCK RECEIVER RIGHT FRONT FOG LAMP RIGHT FRONT PARK/ TURN RIGHT HORN SECONDARY AIR INJECTION REACTOR (AIR) PUMP SIGNAL LAMP STARTER RELAY UNDERHOOD FUSE BLOCK UTILITY 4.3L VEHICLE SPEED SENSOR (VSS) SHIELD VEHICLE SPEED SENSOR SHIELD 4.3L A/T W/ A/C W/ A/C 4.3L W/ RKE WHT WIRE WINDSHIELD WASHER FLUID PUMP

1356 705 278 192 FTP IN AMBIENT LIGHT SENSOR (TOP LEFT SIDE OF DASH) AUTO PKLP HDLP BATTERY FUSE BLK WIRE BODY CONTROL MODULE (UNDER DASH, ON HEATER CASE) BODY RELAY BLOCK (LEFT SIDE OF DASH) BRN WIRE DAYTIME RUNNING LAMPS RELAY DK BLU WIRE DK GRN/WHT WIRE FOG LAMP RELAY FOG LAMP SWITCH FOG LP FUSE FOG LP IND ILLUM FTP GRN WIRE GRY WIRE HEADLAMP GROUNDING RELAY HEADLAMP POWER RELAY HEADLAMP SWITCH HIGH BEAM/ FLASH-TO- PASS SWITCH HOT AT ALL TIMES I/P FUSE BLOCK HDLP SW FUSE 7 LEFT FOG LAMP LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LIGHT SENSOR FOG SW IN HEADLAMP CTRL LT BLU WIRE LT DK LT GRN/BLK WIRE LT HDLP FUSE MULTIFUNCTION SWITCH NCA WIRE ORG/ WIRE PARK BRAKE SW DRL RELAY CTRL PARK BRAKE SWITCH (BASE OF PARK BRAKE ASSEMBLY) PARK LAMP RELAY PARK LP FUSE PARK RLY CTRL FOG RLY CTRL HEADLAMP CTRL HIGH BEAM IN PPL PPL HIGH PPL PPL PPL/WHT WIRE RED WIRE RIGHT FOG LAMP RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP RT HDLP FUSE SPLICE PACK TBC FUSE UNDERHOOD FUSE BLOCK UNDERHOOD FUSE BLOCK (TOP OF LEFT FRONT FENDER) WHT WIRE YEL WIRE YEL/BLK WIRE

* - INFORMATION NOT AVAILABLE 1356 705 278 192 FTP IN 4.3L AMBIENT LIGHT SENSOR (TOP LEFT SIDE OF DASH) AUTO PARK HEAD BATTERY FUSE BLK WIRE BODY CONTROL MODULE (UNDER DASH, ON HEATER CASE) BODY RELAY BLOCK (LEFT SIDE OF DASH) BRN WIRE DK BLU WIRE DK GRN/WHT WIRE FOG LAMP RELAY FOG LAMP SWITCH FOG LP FUSE FOG LP IND FTP GRY WIRE HEADLAMP POWER RELAY HEADLAMP SWITCH HIGH BEAM/ FLASH-TO- PASS SWITCH HOT AT ALL TIMES HOT IN RUN I/P FUSE BLOCK HDLP SW FUSE 7 IGN E FUSE ILLUM LEFT FOG LAMP LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LIGHT SENSOR FOG SW IN HEADLAMP CTRL LT BLU WIRE LT GRN/BLK WIRE LT HDLP FUSE MULTIFUNCTION SWITCH NCA WIRE ORG/ WIRE PARK BRAKE SW DRL RELAY CTRL PARK BRAKE SWITCH (BASE OF PARK BRAKE ASSEMBLY) PARK LAMP RELAY PARK LP FUSE PARK RLY CTRL FOG RLY CTRL HEADLAMP CTRL HIGH BEAM IN PNK WIRE PPL PPL HIGH PPL PPL PPL/WHT WIRE RED WIRE RIGHT FOG LAMP RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP RT HDLP FUSE SPLICE PACK TBC FUSE UNDERHOOD FUSE BLOCK UNDERHOOD FUSE BLOCK (TOP OF LEFT FRONT FENDER) WHT WIRE YEL WIRE YEL/BLK WIRE

4.3L 4.3L ONLY AIR FUSE AIR INJECTION REACTOR FUSE BLOCK AIR RELAY AIR SOL FUSE BATTERY BATTERY FUSE BLK WIRE CALIFORNIA ONLY CENTRAL SEQUENTIAL FUEL INJECTION (4.3L) ECM 1 FUSE ENG 1 FUSE EVAPORATIVE EMISSIONS (EVAP) CANISTER PURGE SOLENOID EVAPORATIVE EMISSIONS (EVAP) CANISTER VENT SOLENOID FROM ECM 1 FUSE DIAGRAM 1 OF 5) FUEL INJECTORS FUEL INJECTR 1 FUEL INJECTR 2 FUEL INJECTR 3 FUEL INJECTR 4 FUSIBLE LINK GAUGES FUSE 4 GENERATOR GRY WIRE HEATED OXYGEN SENSOR HEATED OXYGEN SENSOR HEATED OXYGEN SENSOR I/P FUSE BLOCK IGN A FUSE TO ENG 1 FUSE (DIAGRAM 1 OF 5) IGNITION COIL POWERTRAIN CONTROL MODULE (PCM) IGNITION CONTROL MODULE (ICM) IGNITION SWITCH INSTRUMENT PANEL CLUSTER (IPC) BODY CONTROL MODULE LOCK OFF MASS AIR FLOW (MAF) SENSOR (4.3L) NCA WIRE OXYGEN FUSE PICKUP PNK 2.2L WIRE PNK PNK PNK WIRE PNK PNK WIRE PNK WIRE RED WIRE RUN WIRE SECONDARY AIR INJECTION REACTOR PUMP SIR FUSE 16 STARTER SWITCH TO B/U LP FUSE (DIAGRAM 2 OF 5) TO ENG HARN, 5 CM FROM BREAKOUT TO ENG HARN) TO IGN C FUSE (DIAGRAM 2 OF 5) TURN FUSE 10 UNDERHOOD FUSE BLOCK UNDERHOOD FUSE BLOCK STARTER RELAY YEL WIRE

4 DOOR A/C COMPRESSOR CLUTCH RELAY A/T ABS FUSE AIR RELAY AUTOMATIC TRANSMISSION SHIFT LOCK (BTSI) SOLENOID (W/ FLOOR SHIFT A/T) B/U LP FUSE BACK-UP LAMP SWITCH BLK WIRE BLOWER MOTOR RELAY BODY RELAY BLOCK BRN WIRE BTSI FUSE DAYTIME RUNNING LAMP (DRL) RELAY ELECTRONIC BRAKE CONTROL MODULE (EBCM) FROM B/U LP FUSE DIAGRAM 2 OF 5) FROM IGN A FUSE DIAGRAM 1 OF 5) FROM OXYGEN FUSE DIAGRAM 1 OF 5) GRN WIRE GRY WIRE HEADLAMP GROUNDING RELAY HVAC FUSE IGN B FUSE IGN C FUSE IGN E FUSE IGNITION SWITCH INSIDE REAR VIEW MIRROR (UTILITY) (PICKUP) LEFT BACK-UP LAMP (PICKUP) LEFT BACK-UP LAMP (UTILITY) LOCK LOCK OFF OFF LOCK OFF LT GRN WIRE LT LT M/T MULTI- FUNCTION SWITCH ORG/ WIRE PARK LAMP RELAY HEADLAMP SWITCH PARK/ NEUTRAL POSITION (PNP) SWITCH PNK WIRE REAR DEFOGGER RELAY (EXCEPT BASE PICKUP) RED WIRE RED/WHT WIRE RIGHT BACK-UP LAMP RIGHT BACK-UP LAMP (UTILITY) RUN WIRE SECONDARY AIR INJECTION REACTOR FUSE BLOCK (CALIF) STOP LAMP SWITCH STUD 2 FUSE HAZ LP FUSE PARK LP FUSE TO CRANK FUSE (DIAGRAM 4 OF 5) TO CLSTR FUSE (DIAGRAM 4 OF 5) TO IGN E FUSE (DIAGRAM 2 OF 5) TO RAP MAXI FUSE (DIAGRAM 3 OF 5) TO RAP RELAY (DIAGRAM 5 OF 5) TO TRAILER WIRING PROVISIONS TRAILER WIRING PROVISIONS (UTILITY W/ M/T) TRANSFER CASE SHIFT CONTROL MODULE TRL B/U FUSE UNDERHOOD FUSE BLOCK VEH B/U FUSE WHT WIRE YEL 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

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