GMC Sierra IV (2018-2022) Starting circuit

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

2.7L TURBO 3.0L TURBO DIESEL 4.3L/ 5.3L 5.3L, 6.2L 6.2L AUTO STOP START SWITCH SIGNAL BATTERY BATTERY CURRENT SENSOR BATTERY SENSOR MODULE BLK WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/GRN WIRE BODY CONTROL MODULE (LEFT END OF DASH) COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE (BEHIND LEFT HEADLAMP ASSEMBLY) EXCEPT 4.3L GRN WIRE GRN/BLK WIRE HIGH SPEED GMLAN SERIAL DATA (-) (1) HOT W/ IGNITION MAIN RELAY ENERGIZED IGN MODE SW MODE VOLT IGNITION KEY RESISTOR SIGNAL IGNITION MODE SWITCH IGNITION SWITCH KEYLESS ENTRY CONTROL MODULE (BEHIND LEFT SIDE OF DASH) LEFT INSTRUMENT PANEL CENTER ACCESSORY FUNCTION SWITCH NCA WIRE OFF OFF/RUN/CRANK IGNITION VOLTAGE PASSIVE START SW 2 LOW REF PASSIVE START SW SIG 2 POWER DISTRIBUTION SYSTEM PUSH BUTTON START CHALLENGE ACTIVE SIGNAL RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL CENTER ACCESSORY FUNCTION SWITCH RUN WIRE RUN/CRANK IGNITION 1 VOLTAGE STARTER MOTOR STARTER PINION SOLENOID ACTUATOR RELAY STARTER PINION SOLENOID RELAY CONTROL STARTER RELAY UNDERHOOD FUSE BLOCK VIO WIRE VIO/GRN WIRE W/ FLEXRIDE MODE SYSTEM W/ START/STOP SYSTEM W/O FLEXRIDE MODE SYSTEM W/O START/STOP SYSTEM WHT WIRE WHT/BLK WIRE WHT/GRY WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/VIO WIRE

AUTOMATIC TRANSMISSION ASSEMBLY (6 SPEED A/T) BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY GRY WIRE HIGH SPEED GMLAN HOT W/ IGNITION MAIN RELAY ENERGIZED LINES SYSTEM COMPUTER DATA POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER (RIGHT SIDE OF DASH) RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SERIAL DATA (-) (1) TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SWITCH VIO/GRN WIRE VIO/YEL WIRE WHT WIRE WHT/GRY WIRE YEL/BLK WIRE