Chevrolet Blazer III (2018-2023) engine control module Wiring diagrams

ACTUATOR CTRL OPEN BATT POS VOLT BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM COOLANT TEMPERATURE SENSOR 2 SIGNAL COOLANT TEMPERATURE SENSOR 2 SIGNAL HEATER CORE INLET TEMPERATURE SIGNAL ENGINE BLK TEMP WIRE ENGINE BLOCK COOLANT TEMPERATURE SIGNAL ENGINE CONTROL MODULE ENGINE CONTROL SEN LOW REF 1 ENGINE CONTROLS SYSTEM ENGINE COOLANT FLOW CONTROL VALVE ENGINE COOLANT TEMPERATURE SENSOR 1 ENGINE COOLANT TEMPERATURE SENSOR 2 ENGINE COOLANT TEMPERATURE SENSOR 5 ENGINE COOLANT TEMPERATURE SENSOR 6 ENGINE CTRL VEHICLE SENSORS LOW REF 1 ENGINE INLET COL TEMPERATURE SIGNAL ENGINE OUTLET COOLANT TEMPERATURE SIGNAL GRN WIRE GRN/YEL WIRE GRY WIRE GRY/VIO WIRE HOT AT ALL TIMES HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED LEFT OF BATTERY) LOWER RIGHT FRONT OF ENGINE) RED/WHT WIRE SENSOR SIGNAL SER DATA (-) 7 TURBOCHARGER BYPASS SOLENOID VALVE UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLU WIRE VIO/GRY WIRE WHT WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE

2.5L 3.6L AUXILIARY COOLANT PUMP RELAY AUXILIARY HEATER COOLANT PUMP BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLK/BRN WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM COOLING FAN CTRL SIG COOLING FAN MOTOR DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE ENGINE COOLANT TEMPERATURE GAUGE ENGINE COOLANT TEMPERATURE IND ENGINE COOLANT TEMPERATURE SENSOR GRN/VIO WIRE GROUND GRY WIRE GRY/BLU WIRE HI SPEED GMLAN SERIAL DATA (-) 1 HI SPEED GMLAN SERIAL DATA (-) 3 HOT AT ALL TIMES HOT W/ HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED HTR RELAY CTRL IGNITION MAIN RELAY INSTRUMENT CLUSTER LOGIC MOST SERIAL DATA (+) NCA WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RLY SPD SIG SIG GND SIG GND SENS LOW REF TEMP SENS SIG UNDERHOOD FUSE BLOCK VIO/GRY WIRE W/ TRAILER PROVISIONS W/O TRAILER PROVISIONS WHT WIRE YEL/BLU WIRE

2.0L TURBO 2.5L 3.6L AUTOMATIC TRANSMISSION ASSEMBLY BATTERY POSITIVE VOLT BRK APPLY SENS LOW REF BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BODY CONTROL MODULE BRAKE PEDAL POSITION SENSOR BRK APPLY SENS CTRL BRK APPLY SENS SIG BRK POS SENS LOW REF BRK POS SENS SIG COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE GRN/YEL WIRE GRY/YEL WIRE HI SPD GMLAN SERIAL DATA (-) (1) HI SPEED GMLAN SER DATA (-) 1 HI SPEED GMLAN SERIAL DATA (-) 1 HOT AT ALL TIMES IGNITION MODE SW MODE CTRL IGNITION MODE SW MODE CTRL BACKUP IMS MODE SW LO REF INSTRUMENT PANEL FUSE BLOCK J193 (2.0L TURBO) J194 (2.0L TURBO) KEY CAPTURE/COLUMN LOCK SHIFT POS SIG NCA WIRE PARK LOCK SOL CTRL PARK POSITION SWITCH RED/BRN WIRE TRANS POS SENS REF TRANSMISSION CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LOCK CONTROL SOLENOID ACTUATOR VIO/BLK WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE YEL/BLU WIRE

2.5L 3.6L AUXILIARY COOLANT PUMP RELAY AUXILIARY HEATER COOLANT PUMP BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLK/BRN WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM COOLING FAN CTRL SIG COOLING FAN MOTOR DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE ENGINE COOLANT TEMPERATURE GAUGE ENGINE COOLANT TEMPERATURE IND ENGINE COOLANT TEMPERATURE SENSOR GRN/VIO WIRE GROUND GRY WIRE GRY/BLU WIRE HI SPEED GMLAN SERIAL DATA (-) 1 HI SPEED GMLAN SERIAL DATA (-) 3 HOT AT ALL TIMES HOT W/ HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED HTR RELAY CTRL IGNITION MAIN RELAY INSTRUMENT CLUSTER LOGIC MOST SERIAL DATA (+) NCA WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RLY SPD SIG SIG GND SIG GND SENS LOW REF TEMP SENS SIG UNDERHOOD FUSE BLOCK VIO/GRY WIRE W/ TRAILER PROVISIONS W/O TRAILER PROVISIONS WHT WIRE YEL/BLU WIRE

2.0L TURBO 2.5L 3.6L AUTOMATIC TRANSMISSION ASSEMBLY BATTERY POSITIVE VOLT BRK APPLY SENS LOW REF BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BODY CONTROL MODULE BRAKE PEDAL POSITION SENSOR BRK APPLY SENS CTRL BRK APPLY SENS SIG BRK POS SENS LOW REF BRK POS SENS SIG COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE GRN/YEL WIRE GRY/YEL WIRE HI SPD GMLAN SERIAL DATA (-) (1) HI SPEED GMLAN SER DATA (-) 1 HI SPEED GMLAN SERIAL DATA (-) 1 HOT AT ALL TIMES IGNITION MODE SW MODE CTRL IGNITION MODE SW MODE CTRL BACKUP IMS MODE SW LO REF INSTRUMENT PANEL FUSE BLOCK J193 (2.0L TURBO) J194 (2.0L TURBO) KEY CAPTURE/COLUMN LOCK SHIFT POS SIG NCA WIRE PARK LOCK SOL CTRL PARK POSITION SWITCH RED/BRN WIRE TRANS POS SENS REF TRANSMISSION CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LOCK CONTROL SOLENOID ACTUATOR VIO/BLK WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE YEL/BLU WIRE

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BRN WIRE BRN/WHT WIRE CHARGING CKP SENS SIG 1 COMPUTER DATA LINES SYSTEM DATA 2 (+) DFI HI VOLT CTRL CYLINDER 1 DFI HI VOLT CTRL CYLINDER 2 DFI HI VOLT CTRL CYLINDER 3 DFI HI VOLT CTRL CYLINDER 4 DFI HI VOLT SPLY CYLINDER 1 DFI HI VOLT SPLY CYLINDER 2 DFI HI VOLT SPLY CYLINDER 3 DFI HI VOLT SPLY CYLINDER 4 DRIVER INFORMATION CENTER DISPLAY DUTY CYCLE SIG ENG OIL PUMP CTRL ENGINE CONTROL MODULE ENGINE COOLANT TEMPERATURE GAUGE ENGINE COOLANT TEMPERATURE IND ENGINE OIL GAUGE ENGINE OIL PRESSURE IND EXHAUST CAMSHAFT POSITION SENSOR EXHAUST CAMSHAFT PROFILE SLEEVE POSITION SENSOR 1 EXHAUST CAMSHAFT PROFILE SLEEVE POSITION SENSOR 2 EXHAUST SENS (1) EXHAUST SENS 1 VOLT REF EXHAUST SENS LO REF 1 FUEL GAUGE FUEL IND GMLAN GRN WIRE GRN/BLU WIRE GRN/GRY WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE GRY/WHT WIRE GRY/YEL WIRE HPFP HI CTRL HPFP LO CTRL IGN CTRL (1) IGN CTRL (2) IGN CTRL (3) IGN CTRL (4) IGN CTRL LO REF BANK 1 IND CTRL INSTRUMENT CLUSTER INTAKE CAMSHAFT POSITION SENSOR INTAKE CAMSHAFT PROFILE SLEEVE POSITION SENSOR 1 INTAKE CAMSHAFT PROFILE SLEEVE POSITION SENSOR 2 INTAKE CMP SENS 1 INTAKE SENS 1 VOLT REF INTAKE SENS LO REF 1 KNOCK SENS 1 LO REF KNOCK SENS 2 LO REF LO CTRL BANK 1 SENS (2) LO SPD LOGIC MALFUNCTION IND OIL PUMP MTR CTRL RED WIRE RLY FUSED SPLY 3 SER STARTING/ SYSTEM TP SENS 1 SIG VIO/BLK WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/WHT WIRE WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/VIO WIRE YEL/WHT WIRE

"CHECK ENGINE" IND CTRL A/C COMPRESSOR CLUTCH RELAY A/C REFRIGERANT PRESS SENS SIG A/C REFRIGERANT PRESSURE SENSOR ACCELERATOR PEDAL POS SIG 1 ACCELERATOR PEDAL POS SIG 2 ACCELERATOR PEDAL POSITION SENSOR AFTER BOIL COOLENT PUMP RELAY CTRL AIR CONDITIONING SYSTEM AMBIENT AIR TEMP SENS SIG BATT POS VOLT BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRY WIRE BRAKE POSITION SENS SIG BRAKE VACUUM SENS SIG BRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CRUISE/ETC/TCC BRAKE SIG DOOR LOCKS, ANTI-THEFT SYSTEMS DRIVER MODE SW SIG ENGINE CONTROL MODULE EVAPORATIVE EMISSION VENT SOLENOID VALVE FUEL PUMP FUEL PUMP PRIMARY RLY CTRL FUEL PUMP, LEVEL SENSOR ASSEMBLY GRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRY WIRE HI SPD GMLAN SERIAL DATA (+) (3) HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) 7 HOOD OPEN SW SIG HOT AT ALL TIMES HUMIDITY SENS SIG IGNITION 1 VOLT IMS FEEDBACK SIG IMSM CTRL BACKUP INTAKE AIR TEMP SENS SIG LOW REF LOW REF (1) LOW REF 2 MASS AIR FLOW SENS SIG NCA WIRE PINION SOLENOID ACC RELAY CTRL POWERTRAIN MAIN RLY FUSED SPLY 1 POWERTRAIN MAIN RLY FUSED SPLY 2 POWERTRAIN RLY COIL CTRL REAR BODY FUSE BLOCK RED WIRE RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE STARTER ENABLE RELAY CTRL STARTING/CHARGING SYSTEM TRANSMISSIONS SYSTEM VIO WIRE VIO/BLU WIRE VIO/GRY WIRE VIO/YEL WIRE WAKEUP SERIAL DATA WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/VIO WIRE YEL/WHT WIRE

ABSOLUTE PRESSURE ACTIVE GRILLE AIR SHUTTER 1 ACTUATOR AMBIENT AIR TEMPERATURE SENSOR BATTERY FUSE BLOCK BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/GRY WIRE BLU/WHT WIRE BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE BUS RELAY CONTROL CHARGE IND CTRL COMPUTER DATA LINES SYSTEM DUTY CYCLE SIG ENGINE CONTROL MODULE EVAP PURGE EVAPORATIVE EMISSION PURGE SOLENOID VALVE FUEL PRESSURE, TEMPERATURE SENSOR FUEL RAIL PRESS FUEL RAIL PRESS LOW REF FUEL RAIL PRESS SENS SIG GRN/BLU WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES LIN BUS 1 LOGIC LOW CTRL MAP SENS SIG OIL LEVEL SW SIG POWERTRAIN SENSOR PRESS SENS SIG PURGE SOL CTRL RED/YEL WIRE RLY FUSED SPLY 5 SIG GROUND STARTING/ CHARGING SYSTEM THROTTLE INLET THROTTLE INLET ABSOLUTE VIO/BLK WIRE VIO/BLU WIRE VIO/GRY WIRE WHT/BLU WIRE WHT/RED WIRE YEL/BLU WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE

BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE ENGINE CONTROL MODULE ENGINE COOLANT TEMPERATURE SENSOR GRN/WHT WIRE GRY/RED WIRE GRY/WHT WIRE HEATED OXYGEN SENSOR 1 HEATED OXYGEN SENSOR 2 HI CTRL HIGH PRESSURE FUEL PUMP KNOCK SENS KNOCK SENS SIG 2 LOW REF 2 LOW REF 1 KNOCK SENS SIG 1 MANIFOLD ABSOLUTE PRESSURE SENSOR NCA WIRE SIG GND VIO/BLK WIRE VIO/BLU WIRE VIO/GRY WIRE WHT/BLK WIRE WHT/GRY WIRE WHT/YEL WIRE YEL WIRE

A/C COMP CLUTCH RLY CTRL A/C COMPRESSOR CLUTCH RELAY A/C REFRIGERANT PRESSURE SENS SIG ACC WAKE-UP SERIAL DATA AIR CONDITIONING SYSTEM AIR TEMP SENS SIG APP LOW REF 1 APP LOW REF 2 APP SIG (1) APP SIG (2) AUXILIARY COOLANT PUMP RELAY BATT POS VOLT BATTERY FUSE BLOCK BLK/BLU WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRY WIRE BRK POSITION SENS SIG BRK VACUUM SENS SIG BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CRUISE/ETC/TCC BRK SIG DOOR LOCKS, ANTI-THEFT SYSTEMS DRV MODE SW SIG ENGINE CONTROL MODULE ENGINE CONTROLS IGNITION RELAY ENGINE IND CTRL EVAPORATIVE EMISSION VENT SOLENOID VALVE FUEL PUMP PRIMARY RELAY CTRL FUSED SPLY 1 FUSED SPLY 2 FUSED SPLY 3 GRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE HI SPD GMLAN SERIAL DATA (+) (3) HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) 7 HOOD OPEN SW SIG (PINS: 57 TO 59 NOT USED) 60 HOT AT ALL TIMES HUMIDITY SENS SIG IGN MODE SW MODE CTRL BACKUP (PINS: 61 TO 63 NOT USED) 64 LEFT OF BATTERY) LOW REF MASS AIR FLOW SENS SIG RED WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RLY COIL CTRL RUN/CRANK IGN 1 VOLT 1 SIG GND STARTER ENABLE RLY CTRL STARTER PINION SOL RELAY CTRL STARTING/CHARGING SYSTEM TRANSMISSIONS SYSTEM TURBOCHAGER COOLANT PUMP RLY CTRL UNDERHOOD FUSE BLOCK VIO/BLU WIRE VIO/GRY WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE