Car Wiring Diagrams for Automatic a/c circuit for GMC Terrain II facelift (2021-2024)

A/C COMPRESSOR A/C COMPRESSOR CLUTCH A/C COMPRESSOR SOLENOID VALVE A/C COMPRESSOR SOLENOID VALVE CTRL BATT POS VOLT BATTERY FUSE BLOCK BATTERY POSITIVE VOLT BLK WIRE BLK/GRN WIRE BLOWER MOTOR BLOWER MTR SPD CTRL BLU/BRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE BRN/GRN WIRE BRN/VIO WIRE COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DRIVER INFORMATION CENTER DISPLAY ENGINE COOLANT TEMPERATURE GAUGE ENGINE COOLANT TEMPERATURE IND GRN WIRE GRN/BLU WIRE GRN/YEL WIRE GRY WIRE GRY/BRN WIRE GRY/GRN WIRE HOT AT ALL TIMES HOT W/ BATTERY SAVER RELAY ENERGIZED HOT W/ IGNITION MAIN RELAY ENERGIZED HVAC CONTROL MODULE (TOP CENTER OF DASH) INSIDE AIR TEMP SENS SIG INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LIN BUS 1 LOGIC LOW SPEED GMLAN SERIAL DATA LOWER RIGHT FRONT OF ENGINE) NCA WIRE POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER (W/ START/STOP SYSTEM) (LOWER CENTER OF DASH) REAR DEFOG RLY CTRL RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE REGULATED CTRL RUN/CRANK IGNITION 1 VOLT SOLAR SENS DRV SIG SOLAR SENS LOW REF UNDERHOOD FUSE BLOCK VIO/GRN WIRE W/ START/STOP SYSTEM W/O START/STOP SYSTEM WINDSHIELD TEMPERATURE, INSIDE MOISTURE SENSOR

A/C COMPRESSOR CLUTCH RELAY A/C IND A/C REFRIGERANT PRESSURE SENSOR A/C SWITCH AUTO IND AUTO SWITCH AUXILIARY COOLANT PUMP RELAY AUXILIARY HEATER COOLANT PUMP BLK WIRE BLK/GRN WIRE BLU/WHT WIRE BRN/GRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM DEFROST, LOWER AIR OUTLET IND DEFROST, LOWER AIR OUTLET SWITCH FAN DOWN SWITCH FAN UP SWITCH GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED HVAC CONTROLS LEFT TEMPERATURE DOWN SWITCH LEFT TEMPERATURE UP SWITCH LOGIC LOWER AIR OUTLET IND LOWER AIR OUTLET SWITCH RECIRCULATION IND RECIRCULATION SWITCH RED/BLU WIRE RED/GRN WIRE RIGHT TEMPERATURE DOWN SWITCH WINDSHIELD DEFROST SWITCH RIGHT TEMPERATURE UP SWITCH START STOP IND START/ STOP SWITCH SYNC IND SYNC SWITCH UNDERHOOD FUSE BLOCK UPPER AIR OUTLET IND UPPER AIR OUTLET SWITCH VIO/BLU WIRE WHT/GRY WIRE WINDSHIELD DEFROST IND YEL/BLU WIRE

5 VOLT REF A/C PRESS AMBIENT AIR AMBIENT LIGHT/SUNLOAD SENSOR (W/ ONSTAR) (TOP CENTER OF DASH) ANTI-THEFT SYSTEM BATT POS VOLT BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRY WIRE BLU/WHT WIRE BRN/RED WIRE CLUTCH RLY CTRL COMPUTER DATA LINES SYSTEM COOLING FAN MOTOR (MOUNTED TO COOLING FAN SHROUD) DATA (-) (3) ENG COOLANT ENGINE CONTROLS SYSTEM ENGINE CTRL MODULE FUSE SPLY VOLT 1 GMLAN SERIAL GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BRN WIRE HEADLIGHTS SYSTEM LOGIC LOW REF 2 MAIN RLY MODE DOOR ACTUATOR NCA WIRE ORG/ WIRE RED/BLU WIRE RED/WHT WIRE SENS LO REF 1 SENS SIG TEMP SENS SIG TEMP SENS SIGNAL UNDERHOOD FUSE BLOCK VIO/BLU WIRE WHT WIRE WHT/BLU WIRE WHT/GRY WIRE WHT/RED WIRE YEL WIRE

A/C EVAPORATOR TEMPERATURE SENSOR AIR INLET DR STEPPER MOTOR CTRL 1 AIR INLET DR STEPPER MOTOR CTRL 2 AIR INLET DR STEPPER MOTOR CTRL 3 AIR INLET DR STEPPER MOTOR CTRL 4 AIR RECIRCULATION DOOR ACTUATOR AIR TEMP DR STEPPER MOTOR PASS CTRL 1 AIR TEMP DR STEPPER MOTOR PASS CTRL 2 AIR TEMP DR STEPPER MOTOR PASS CTRL 3 AIR TEMP DR STEPPER MOTOR PASS CTRL 4 AMBIENT AIR TEMPERATURE SENSOR BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLU WIRE BLU/GRY WIRE BLU/WHT WIRE BRN/GRN WIRE DR CTRL LOW REF ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE SENSOR EVAP CORE TEMP SENS SIG GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BRN WIRE GRY/RED WIRE GRY/WHT WIRE HOT AT ALL TIMES HVAC CONTROL MODULE (TOP CENTER OF DASH) HVAC MOTOR CTRL LEFT AIR TEMPERATURE DOOR ACTUATOR MODE DR STEPPER MOTOR CTRL 1 MODE DR STEPPER MOTOR CTRL 2 MODE DR STEPPER MOTOR CTRL 3 MODE DR STEPPER MOTOR CTRL 4 ORG/ WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RIGHT AIR TEMPERATURE DOOR ACTUATOR TEMP DR STEPPER MOTOR CTRL 1 TEMP DR STEPPER MOTOR CTRL 2 TEMP DR STEPPER MOTOR CTRL 3 TEMP DR STEPPER MOTOR CTRL 4 UNDERHOOD FUSE BLOCK VIO/BLU WIRE WHT WIRE WHT/PNK WIRE WHT/RED WIRE YEL WIRE YEL/GRN WIRE