Car Wiring Diagrams for Automatic a/c circuit for GMC Sierra III facelift (2015-2018)

5-VOLT REFERENCE AIR TEMP DOOR CTRL LOW REFERENCE AMBIENT LIGHT/SUNLOAD SENSOR (TOP CENTER OF DASH) ANTI-THEFT SYSTEM AUXILIARY HEATER CTRL AUXILIARY HEATER STATUS SIGNAL BATT POSITIVE BATT POSITIVE VOLT BATTERY FUSE BLOCK BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLOWER MOTOR BLOWER MTR BLOWER MTR SPD CTRL BLU/BRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRN/VIO WIRE COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM ELECTRIC VARIABLE DISPLACEMENT CTRL ELECTRIC VARIABLE DISPLACEMENT SPLY EXCEPT BASE EQUIPMENT BASE EQUIPMENT FRT BLWR FUSE FUSE 1 GRN WIRE GRN/YEL WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/RED WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED HVAC CONTROL MODULE (BEHIND UPPER GLOVE BOX) HVAC/AUX HVAC IGN FUSE INSIDE AIR TEMP SENS SIGNAL INSTRUMENT PANEL JUNCTION BLOCK IPC FUSE LEFT INSTRUMENT PANEL FUSE BLOCK LINEAR INTERCONNECT NETWORK BUS 9 LOGIC LOW SPD GMLAN SERIAL DATA PEPS/HVAC FUSE REAR DEFOG RLY CTRL RED/GRY WIRE RED/VIO WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RUN/CRANK IGN 1 VOLT SIGNAL GND SOLAR SENS DRIVER SIGNAL SPD CTRL TWILIGHT SENTINEL DELAY SIGNAL VIO WIRE VIO/GRY WIRE VOLT W/ ONSTAR W/O ONSTAR WHT WIRE WHT/BLU WIRE YEL/DK GRN WIRE YEL/VIO WIRE

A/C EVAPORATOR TEMPERATURE SENSOR A/C IND A/C SWITCH AUTO IND AUTO SWITCH BLK WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/YEL WIRE COMPUTER DATA LINES SYSTEM DEFROST IND DEFROST SWITCH DEFROST, LOWER AIR OUTLET IND DEFROST, LOWER AIR OUTLET SWITCH DUCT LEFT LOWER AIR TEMPERATURE SENSOR DUCT LEFT UPPER AIR TEMPERATURE SENSOR DUCT RIGHT LOWER AIR TEMPERATURE SENSOR DUCT RIGHT UPPER AIR TEMPERATURE SENSOR ELECTRICAL AUXILIARY HEATER EXCEPT BASE EQUIPMENT BASE EQUIPMENT GMLAN GRN WIRE GRN/YEL WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/RED WIRE INFO DISPLAY MODULE INSTRUMENT PANEL JUNCTION BLOCK LEFT TEMPERATURE CONTROL SWITCH LOGIC LOWER AIR OUTLET IND LOWER AIR OUTLET SWITCH REAR DEFOGGER IND REAR DEFOGGER SWITCH RECIRCULATION IND RECIRCULATION SWITCH RED WIRE RED/GRY WIRE RIGHT TEMPERATURE CONTROL SWITCH START/ STOP SWITCH SYNC IND SYNC SWITCH UPPER AIR OUTLET IND UPPER AIR OUTLET SWITCH UPPER, LOWER AIR OUTLET IND UPPER, LOWER AIR OUTLET SWITCH VENTILATION FAN SWITCH VIO WIRE VIO/GRY WIRE YEL WIRE YEL/DK GRN WIRE

6.0L 6.6L A/C COMPRESSOR A/C COMPRESSOR CLUTCH A/C COMPRESSOR SOLENOID VALVE AIR INLET DOOR ACTUATOR AIR TEMP DOOR CONTROL AIR TEMP DOOR POSITION SIG AMBIENT AIR TEMPERATURE SENSOR BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/YEL WIRE BRN/BLU WIRE BRN/GRN WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ENGINE COOLANT LEVEL SWITCH ENGINE COOLANT TEMPERATURE GAUGE EVAP CORE TEMP SENSOR SIG GRN WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE HVAC CONTROL MODULE (BEHIND UPPER GLOVE BOX) INSTRUMENT CLUSTER LEFT AIR TEMPERATURE DOOR ACTUATOR LEFT MODE DOOR ACTUATOR LOGIC LOW COOLANT LEVEL IND LOWER LEFT AIR TEMP SENS SIG LOWER RIGHT AIR TEMP SENS SIG MODE 1 VALVE POSITION SENSOR SIG MODE DOOR CONTROL MOST SERIAL DATA (+) PASS AIR TEMP DOOR CTRL PASS AIR TEMP DOOR POSITION SIG PASS AIR TEMP MOTOR CTRL RECIRCULATION DOOR CONTROL RECIRCULATION DOOR POSITION SIG RED WIRE RIGHT AIR TEMPERATURE DOOR ACTUATOR SENS LOW REF TEMP TEMP SENS SENS LOW SIG REF UPPER LEFT AIR TEMP SENS SIG UPPER RIGHT AIR TEMP SENS SIG VIO/GRN WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/LT GRN WIRE YEL WIRE YEL/BLK WIRE YEL/BRN WIRE

6.0L 6.0L 6.6L A/C CLUTCH RLY CTRL A/C COMPRESSOR CLUTCH RELAY A/C PRESS 5 VOLT REF 1 A/C REFRIGERANT PRESS SENS LO REF A/C REFRIGERANT PRESS SENS SIG A/C REFRIGERANT PRESSURE SENSOR AC CLTCH FUSE AMBIENT AIR TEMP SENS LOW REF AMBIENT AIR TEMPERATURE SENSOR AMBT AIR TEMP SENS SIG B+ VOLT BATT POS VOLT BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/WHT WIRE BLU WIRE BLU/GRY WIRE BLU/VIO WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COOL FAN 1 FUSE COOL FAN 2 FUSE COOL FAN CLTCH FUSE COOLING FAN 5 VOLT REF COOLING FAN CONTROL MODULE (6.6L) COOLING FAN LOW REF COOLING FAN RELAY COOLING FAN SPEED SIG CTRL SIG DK BLU WIRE DK BLU/GRY WIRE ENG COOLANT TEMP SENS SIG ENGINE CONTROL MODULE ENGINE CONTROLS IGNITION RELAY ENGINE COOLANT TEMPERATURE SENSOR GRN WIRE GRY WIRE GRY/RED WIRE HI COOLING FAN RLY CTRL HI SPD COOLING FAN RLY CTRL HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES LEFT COOLING FAN MOTOR (4.3L, 6.2L, 5.3L) LO REF LOGIC B+ LOW REF MIRROR AMBIENT AIR TEMPERATURE SENSOR OUTSIDE AMBIENT AIR TEMP SENS LOW REF PASSENGER OUTSIDE REAR VIEW MIRROR RED/BRN WIRE RED/GRY WIRE RED/WHT WIRE RIGHT COOLING FAN MOTOR (4.3L, 6.2L, 5.3L) RLY SPD SIG SIG GND OUTSIDE AMBIENT AIR SENS SIG SPD SIG TCM/ECM FUSE UNDERHOOD FUSE BLOCK WHT WIRE WHT/BLK WIRE WHT/GRY WIRE