GMC Sierra IV (2018-2022) wht Wiring diagrams

A/C COMPRESSOR A/C COMPRESSOR CLUTCH A/C COMPRESSOR SOLENOID VALVE AMBIENT LIGHT/ SUNLOAD SENSOR AUXILIARY HEATER CTRL BATT POSITIVE VOLT BLK WIRE BLK/GRN WIRE BLOWER MOTOR (RIGHT SIDE OF DASH) BLOWER MTR SPD CTRL BLOWER SPEED FEEDBACK SIGNAL BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE BRN/GRN WIRE COMPUTER DATA LINES SYSTEM DRIVER SOLAR SENSOR SIGNAL ELECTRIC VARIABLE DISPLACEMENT CTRL ELECTRIC VARIABLE DISPLACEMENT SPLY ELECTRICAL AUXILIARY HEATER GRN WIRE GRN/BLU WIRE GRN/YEL WIRE GROUND GRY WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED HVAC CONTROL MODULE (BEHIND UPPER LEFT SIDE OF DASH) INSIDE AIR TEMPERATURE SENSOR SIG LIN SERIAL DATA BUS 19 LINEAR INTERCONNECT NETWORK SERIAL DATA BUS 9 LOGIC LOW SPD GMLAN SERIAL DATA NCA WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RUN IGNITION 3 VOLTAGE SERIAL DATA (-) (1) SOLAR SENSOR LOW REFERENCE VIO WIRE VIO/BRN WIRE VIO/GRY WIRE WHT WIRE WHT/BLU WIRE

A/C COMPRESSOR CLUTCH RELAY A/C EVAPORATOR TEMPERATURE SENSOR A/C IND A/C SWITCH AIR INLET DOOR ACTUATOR AIR INLET DOOR STEPPER MOTOR CTRL (1) AIR INLET DOOR STEPPER MOTOR CTRL 2 AIR INLET DOOR STEPPER MOTOR CTRL 3 AIR INLET DOOR STEPPER MOTOR CTRL 4 AIR TEMPERATURE DOOR CTRL LOW REF AUTO AUXILIARY HEATER COOLANT PUMP RELAY BATTERY FUSE BLOCK BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BRN WIRE BLU/GRY WIRE BRN WIRE BRN/GRN WIRE BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COOLING FAN RELAY DISPLAY ENGINE COOLANT FAN SWITCH ENGINE COOLANT TEMPERATURE 2 SWITCH EVAP CORE TEMP SENSOR SIG GRN WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED HVAC CONTROL MODULE (BEHIND UPPER LEFT SIDE OF DASH) HVAC CONTROLS HVAC MOTOR CONTROL LEFT AIR TEMPERATURE DOOR ACTUATOR LOGIC LOWER AIR LOWER AIR OUTLET SWITCH MAX WINDSHIELD DEFROST IND MAX WINDSHIELD DEFROST SWITCH MODE DOOR ACTUATOR MODE DOOR STEPPER MOTOR CONTROL (2) MODE DOOR STEPPER MOTOR CONTROL (4) MODE DOOR STEPPER MOTOR CONTROL 1 MODE DOOR STEPPER MOTOR CONTROL 3 OUTLET IND RED/GRY WIRE RED/WHT WIRE RIGHT AIR TEMPERATURE DOOR ACTUATOR START/ STOP SWITCH SYNC TEMP DOOR STEPPER MOTOR CONTROL 1 TEMP DOOR STEPPER MOTOR CONTROL 2 TEMP DOOR STEPPER MOTOR CONTROL 3 TEMP DOOR STEPPER MOTOR CONTROL 4 UNDERHOOD AUXILIARY FUSE BLOCK UNDERHOOD FUSE BLOCK UPPER AIR OUTLET IND UPPER AIR OUTLET SWITCH VIO/BLU WIRE VIO/GRN WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRY WIRE WHT/YEL WIRE WINDSHIELD DEFROST IND WINDSHIELD DEFROST SWITCH YEL WIRE YEL/BLK WIRE YEL/GRN WIRE

6.6L TURBO DIESEL A/C COMPRESSOR CLUTCH RELAY CTRL A/C REFRIGERANT PRESSURE SENSOR A/C SENSOR LOW REFERENCE AMBIENT AIR TEMPERATURE SENSOR SIG BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/VIO WIRE BRAKE POSITION SENSOR SIGNAL BRN/RED WIRE CHARGE AIR COOLER COOLANT PUMP COMPUTER DATA LINES SYSTEM COOLING FAN CLUTCH COOLING FAN SPEED CTRL SIG COOLING FAN SPEED SIG ENGINE CONTROL MODULE ENGINE CONTROL SENSORS LOW REF 2 ENGINE COOLANT TEMPERATURE IND ENGINE COOLANT TEMPERATURE SENSOR GMLAN SERIAL DATA (+) 7 GMLAN SERIAL DATA - 1 GND 4 GRN WIRE GRN/VIO WIRE GRY/GRN WIRE GRY/RED WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER J107 (6.6L) J158 (6.6L) J112 (6.6L DIESEL) LOGIC LOW REFERENCE MIRROR AMBIENT AIR TEMPERATURE SENSOR NCA WIRE RED/GRY WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SENSOR SIGNAL VIO/BLU WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRY WIRE

6.6L TURBO DIESEL AUXILIARY HEATER COOLANT PUMP RELAY BLK WIRE BLK/BRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/VIO WIRE CHARGE AIR COOLER COOLANT PUMP COMPUTER DATA LINES SYSTEM COOLING FAN CLUTCH COOLING FAN RELAY COOLING FAN SPEED CTRL SIG COOLING FAN SPEED SIG ENGINE CONTROL MODULE ENGINE COOLANT TEMPERATURE IND ENGINE COOLANT TEMPERATURE SENSOR GMLAN SERIAL DATA (+) 7 GMLAN SERIAL DATA - 1 GND 4 GRN/VIO WIRE GRY/GRN WIRE GRY/RED WIRE HOT AT ALL TIMES HOT W/ ENGINE CONTROL IGNITION RELAY ENERGIZED INSTRUMENT CLUSTER J109 (6.6L) J112 (6.6L DIESEL) J158 (6.6L) LOGIC LOW REFERENCE NCA WIRE RED/GRY WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SENSOR SIGNAL UNDERHOOD AUXILIARY FUSE BLOCK UNDERHOOD FUSE BLOCK VIO/BLU WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE

12 VOLT REF 6.6L (VIN 7) 6.6L VIN Y TURBO DIESEL ACCEL PEDAL POS SIG 1 ACCEL PEDAL POS SIG 2 ACCELERATOR PEDAL POSITION SENSOR ACCL PEDAL POS 5 VOLT REF 1 ACCL PEDAL POS 5 VOLT REF 2 ACCL PEDAL POS LOW REF 1 ACCL PEDAL POS LOW REF 2 ADAP CRUISE CTRL UP/DOWN SW SIG BATT POS VOLT 27 BATT POS VOLT 4 BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (UNDER LEFT SIDE OF DASH) BRK APPLY SENS LOW REF BRK APPLY SENS SIG BRK APPLY SENS VOLT REF BRK POS SENS LOW REF BRK POS SENS SIG BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRUISE CTRL SET/COAST/ RES/ACC SW SIG CRUISE/ETC/TCC BRK SIG ENGINE CONTROL MODULE GRN/WHT WIRE GRY/GRN WIRE HI SPD GMLAN DATA (-) (1) HOT AT ALL TIMES INTAKE AIR FLOW VALVE (6.6L VIN Y TURBO DIESEL) (INLET TO INTAKE MANIFOLD) J108 (6.6L VIN 7) J110 (6.6L VIN 7) J158 (6.6L VIN Y TURBO DIESEL) J112 (6.6L VIN 7) LOGIC RED/BRN WIRE RED/WHT WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK THROTTLE BODY (6.6L VIN 7) (AT INTAKE MANIFOLD INLET) THRTL ACTR CTRL CLOSE THRTL ACTR CTRL OPEN THRTL POS SENS 5 VOLT REF 2 THRTL POS SENS LOW REF THRTL POS SENS SENT 1 SIG UNDERHOOD FUSE BLOCK WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/WHT WIRE

+RES -SET 6 SPEED A/T AUTOMATIC TRANSMISSION ASSEMBLY BATT POS VOLT 28 LO SPD GMLAN SERIAL DATA 2 BLK WIRE BLK/BRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BRAKE PEDAL POSITION SENSOR (BEHIND BRAKE PEDAL ASSEMBLY) BRN/GRN WIRE BRN/WHT WIRE CANCEL SWITCH COMPUTER DATA LINES SYSTEM CRUISE IND CRUISE SWITCH DRIVER INFORMATION CENTER DISPLAY GAP SWITCH GRN WIRE GRN/VIO WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/GRN WIRE HIGH SPD GMLAN SERIAL DATA (+) 1 HIGH SPD GMLAN SERIAL DATA (-) 2 HOT AT ALL TIMES INPUT SPD SIG INSTRUMENT CLUSTER LEFT STEERING WHEEL CONTROLS SWITCH LOGIC NCA WIRE OUTPUT SPD SIG TRANSMISSON OUTPUT SHAFT RED WIRE RED/GRY WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK STEERING WHEEL AIR BAG COIL (BEHIND THE STEERING WHEEL) TRANSMISSION CONTROL MODULE (10 SPEED A/T) TRANSMISSION INPUT SHAFT SPEED SENSOR TRANSMISSION INTERMEDIATE SPEED SENSOR 1 TRANSMISSION INTERMEDIATE SPEED SENSOR 2 TRANSMISSION OUTPUT SHAFT SPEED SENSOR VIO/GRN WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/ORG WIRE

A/C COMPRESSOR A/C COMPRESSOR CLUTCH A/C COMPRESSOR SOLENOID VALVE A/C COMPRESSOR SOLENOID VALVE CTRL AUXILIARY HEATER CTRL BATT POSITIVE VOLT BLK WIRE BLOWER MOTOR (RIGHT SIDE OF DASH) BLOWER MTR SPD CTRL BLOWER SPEED FEEDBACK SIGNAL BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/YEL WIRE BODY CONTROL MODULE BRN/GRN WIRE COMPUTER DATA LINES SYSTEM ELECTRICAL AUXILIARY HEATER GRN WIRE GRN/BLU WIRE GRN/YEL WIRE GROUND HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED HVAC CONTROL MODULE (BEHIND UPPER LEFT SIDE OF DASH) HVAC CONTROL MODULE LIN BUS 1 HVAC CONTROL MODULE LIN BUS 2 LOGIC LOW SPD GMLAN SERIAL DATA NCA WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RUN IGNITION 3 VOLTAGE SERIAL DATA (-) (1) VIO WIRE VIO/BRN WIRE VIO/GRY WIRE WHT WIRE

A/C COMPRESSOR CLUTCH RELAY A/C EVAPORATOR TEMPERATURE SENSOR A/C IND A/C SWITCH AIR INLET DOOR ACTUATOR AIR INLET DOOR STEPPER MOTOR CTRL (1) AIR INLET DOOR STEPPER MOTOR CTRL 2 AIR INLET DOOR STEPPER MOTOR CTRL 3 AIR INLET DOOR STEPPER MOTOR CTRL 4 AIR TEMPERATURE DOOR CTRL LOW REF AUXILIARY HEATER COOLANT PUMP RELAY BATTERY FUSE BLOCK BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BRN WIRE BLU/GRY WIRE BRN WIRE BRN/GRN WIRE BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COOLING FAN RELAY ENGINE COOLING FAN SWITCH ENGINE COOLING TEMPERATURE SWITCH EVAP CORE TEMP SENSOR SIG GRN WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED HVAC CONTROL MODULE (BEHIND UPPER LEFT SIDE OF DASH) HVAC CONTROLS HVAC MOTOR CONTROL LEFT AIR TEMPERATURE DOOR ACTUATOR LOGIC LOWER AIR LOWER AIR OUTLET SWITCH MAX WINDSHIELD DEFROST IND MAX WINDSHIELD DEFROST SWITCH MODE DOOR ACTUATOR MODE DOOR STEPPER MOTOR CONTROL (2) MODE DOOR STEPPER MOTOR CONTROL (4) MODE DOOR STEPPER MOTOR CONTROL 1 MODE DOOR STEPPER MOTOR CONTROL 3 OUTLET IND RED/GRY WIRE RED/WHT WIRE START/ STOP SWITCH TEMP DOOR STEPPER MOTOR CONTROL 1 TEMP DOOR STEPPER MOTOR CONTROL 2 TEMP DOOR STEPPER MOTOR CONTROL 3 TEMP DOOR STEPPER MOTOR CONTROL 4 UNDERHOOD AUXILIARY FUSE BLOCK UNDERHOOD FUSE BLOCK UPPER AIR OUTLET IND UPPER AIR OUTLET SWITCH VIO/BLU WIRE VIO/GRN WIRE WHT WIRE WHT/BLK WIRE WHT/GRY WIRE WINDSHIELD DEFROST IND WINDSHIELD DEFROST SWITCH YEL WIRE YEL/GRN WIRE

6.6L TURBO DIESEL A/C COMPRESSOR CLUTCH RELAY CTRL A/C REFRIGERANT PRESSURE SENSOR A/C SENSOR LOW REFERENCE AMBIENT AIR TEMPERATURE SENSOR SIG BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/VIO WIRE BRAKE POSITION SENSOR SIGNAL BRN/RED WIRE CHARGE AIR COOLER COOLANT PUMP COMPUTER DATA LINES SYSTEM COOLING FAN CLUTCH COOLING FAN SPEED CTRL SIG COOLING FAN SPEED SIG ENGINE CONTROL MODULE ENGINE CONTROL SENSORS LOW REF 2 ENGINE COOLANT TEMPERATURE IND ENGINE COOLANT TEMPERATURE SENSOR GMLAN SERIAL DATA (+) 7 GMLAN SERIAL DATA - 1 GND 4 GRN WIRE GRN/VIO WIRE GRY/GRN WIRE GRY/RED WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER J107 (6.6L) J158 (6.6L) J112 (6.6L DIESEL) LOGIC LOW REFERENCE MIRROR AMBIENT AIR TEMPERATURE SENSOR NCA WIRE RED/GRY WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SENSOR SIGNAL VIO/BLU WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRY WIRE

6.6L DIESEL AUTOMATIC TRANSMISSION ASSEMBLY BATTERY BATTERY FUSE BLOCK BLK WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BRN WIRE BLU/GRN WIRE BODY CONTROL MODULE (UNDER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY ENGINE CONTROL MODULE GMLAN SERIAL DATA - 1 GRN WIRE GRN/BLK WIRE GRY WIRE HIGH SPEED GMLAN SERIAL DATA (+) 7 HOT W/ IGNITION MAIN RELAY ENERGIZED IGN KEY SIG IGN MODE SW SIG 2 IGNITION MODE SW MODE VOLT IGNITION MODE SWITCH IGNITION SWITCH KEYLESS ENTRY CONTROL MODULE (BEHIND LEFT SIDE OF DASH) LOW SPD GMLAN SERIAL DATA OFF OFF/RUN/CRANK VOLT PASSIVE START SW 2 LOW REF POWER DISTRIBUTION SYSTEM RED/GRN WIRE RED/YEL WIRE RUN WIRE RUN/CRANK IGN 1 VOLT STARTER ENABLE RELAY CTRL STARTER MOTOR STARTER RELAY TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION PARK/ NEUTRAL SIGNAL 1 UNDERHOOD FUSE BLOCK VIO/GRN WIRE WHT WIRE WHT/BLK WIRE WHT/GRY WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE