Chevrolet Blazer III (2018-2023) htr relay ctrl Wiring diagrams

2.5L 3.6L A/C REFRIGERANT PRESS SENS SIG A/C REFRIGERANT PRESSURE SENSOR AMBIENT AIR TEMPERATURE SENSOR BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BRN/RED WIRE CLUTCH RELAY CTRL COMPUTER DATA LINES SYSTEM COOLING FAN CTRL SIG COOLING FAN MOTOR ENGINE CONTROL MODULE ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE SENSOR GRN WIRE GROUND GRY WIRE HI SPEED GMLAN SERIAL DATA (-) 1 HOT AT ALL TIMES HTR RELAY CTRL NCA WIRE OUTSIDE AIR TEMP SENS SIG RED/GRN WIRE RLY SPD SIG SIG GND SIG GND SENS LOW REF TEMP SENS SIG W/ TRAILER PROVISIONS W/O TRAILER PROVISIONS WHT WIRE WHT/GRY 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

2.5L 3.6L A/C REFRIGERANT PRESS SENS SIG A/C REFRIGERANT PRESSURE SENSOR AMBIENT AIR TEMPERATURE SENSOR BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BRN/RED WIRE CLUTCH RELAY CTRL COMPUTER DATA LINES SYSTEM COOLING FAN CTRL SIG COOLING FAN MOTOR ENGINE CONTROL MODULE ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE SENSOR GRN WIRE GROUND GRY WIRE HI SPEED GMLAN SERIAL DATA (-) 1 HOT AT ALL TIMES HTR RELAY CTRL NCA WIRE OUTSIDE AIR TEMP SENS SIG RED/GRN WIRE RLY SPD SIG SIG GND SIG GND SENS LOW REF TEMP SENS SIG W/ TRAILER PROVISIONS W/O TRAILER PROVISIONS WHT WIRE WHT/GRY 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