GMC Sierra IV (2018-2022) 2.7l turbo Wiring diagrams

2.7L TURBO 3.0L TURBO DIESEL 5.3L ACCESSORY WAKEUP SERIAL DATA AUTO SWITCH BATT POS VOLT BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/RED WIRE BRN WIRE BRN/WHT WIRE CLUTCH A CTRL CLUTCH B CTRL CLUTCH C CTRL CLUTCH SOLENOID CTRL COMPUTER DATA LINES SYSTEM DRIVE MODE SELECT SWITCH ENGINE CONTROL MODULE ENGINE CONTROLS SYSTEM GMLAN SERIAL DATA (-) (1) (PINS: 39 TO 46 NOT USED) GMLAN SERIAL DATA (-) (1) (PINS: 55 TO 58 NOT USED) 59 GMLAN SERIAL DATA - 1 GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INPUT SPD SIG LEFT SWITCH LOW REF 3 OUTPUT SPD SIG POWER DISTRIBUTION SYSTEM RED/GRN WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT SWITCH RUN/CRANK IGNITION 1 VOLT SERIAL DATA (-) (1) SIG GROUND SNOW SWITCH SOLENOID LOW SIDE CONTROL SPORT SWITCH SWITCH SIG TCC ON/OFF SOLENOID A CTRL TCC ON/OFF SOLENOID B CTRL TRANS CLUTCH G CTRL TRANS CLUTCH H CTRL TRANS HI SIDE DRIVER 1 SIG TRANS HI SIDE DRIVER 2 SIG TRANS INTERMEDIATE SPD SIG TRANS MAIN LINE PRESSURE SOLENOID CTRL (PINS: 4 TO 6 NOT USED) 7 TRANS OIL TEMP SENS LO REF (PINS: 29 TO 32 NOT USED) TRANS OIL TEMP SENS SIG TRANS SENS A 9 VOLT REF (PINS: 9 TO 12 NOT USED) 13 TRANS SENS B 9 VOLT REF TRANSMISSION CONTROL MODULE (BEHIND LEFT CORNER OF THE RADIATOR) UNDERHOOD FUSE BLOCK VIO/BLK WIRE VIO/WHT WIRE VIO/YEL WIRE VOLT REF (1) WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRY WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE

2.7L TURBO A/C EVAPORATOR TEMPERATURE SENSOR A/C IND A/C SWITCH AIR INLET DOOR ACTUATOR AIR INLET DOOR ACTUATOR CTRL 1 AIR INLET DOOR ACTUATOR CTRL 2 AIR INLET DOOR ACTUATOR CTRL 3 AIR INLET DOOR ACTUATOR CTRL 4 AIR TEMPERATURE DOOR LOW REF AUTO IND AUTO SWITCH BATTERY FUSE BLOCK BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BRN WIRE BRN WIRE BRN/GRN WIRE BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DISPLAY DRIVER INFORMATION CENTER DISPLAY ENGINE COOLANT TEMPERATURE GAUGE EVAP TEMP SENSOR SIG GRN WIRE GRN/BRN WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE HOT AT ALL TIMES HVAC ACTUATOR CONTROL HVAC CONTROL MODULE (BEHIND LEFT CENTER OF DASH) HVAC CONTROLS INSTRUMENT CLUSTER LEFT AIR TEMPERATURE DOOR ACTUATOR LOGIC LOW SPEED GMLAN SERIAL DATA 2 LOWER AIR OUTLET IND LOWER AIR OUTLET SWITCH MAX WINDSHIELD DEFROST IND MAX WINDSHIELD DEFROST SWITCH MODE DOOR ACTUATOR MODE DOOR ACTUATOR CONTROL 1 MODE DOOR ACTUATOR CONTROL 2 MODE DOOR ACTUATOR CONTROL 3 MODE DOOR ACTUATOR CONTROL 4 RECIRCULATION IND RECIRCULATION SWITCH RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RIGHT AIR TEMPERATURE DOOR ACTUATOR RUN/CRANK IGNITION 1 VOLTAGE SIGNAL GROUND START STOP IND START/ STOP SWITCH SYNC IND SYNC SWITCH TEMP DOOR ACTUATOR CONTROL 1 TEMP DOOR ACTUATOR CONTROL 2 TEMP DOOR ACTUATOR CONTROL 3 TEMP DOOR ACTUATOR CONTROL 4 TEMP DOOR ACTUATOR PASS CTRL 1 TEMP DOOR ACTUATOR PASS CTRL 2 TEMP DOOR ACTUATOR PASS CTRL 3 TEMP DOOR ACTUATOR PASS CTRL 4 UPPER AIR OUTLET IND UPPER AIR OUTLET SWITCH VIO/BLK WIRE VIO/GRN WIRE WHT WIRE WHT/BLK WIRE WINDSHIELD DEFROST IND WINDSHIELD DEFROST SWITCH YEL WIRE YEL/GRN WIRE

2.7L TURBO 3.0L TURBO DIESEL A/C REFRIGERANT PRESSURE SENSOR AUXILIARY UNDERHOOD FUSE BLOCK BATTERY FUSE BLOCK BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/RED WIRE BRN WIRE BRN/GRY WIRE BRN/YEL WIRE CHARGE AIR COOLER COOLANT PUMP CHARGE AIR COOLER COOLANT PUMP RELAY COMPUTER DATA LINES SYSTEM ENGINE COOLANT TEMPERATURE SENSOR 2 ENGINE COOLANT TEMPERATURE SENSOR 3 ENGINE COOLANT TEMPERATURE SENSOR 4 GRN WIRE GRN/VIO WIRE GRY WIRE GRY/VIO WIRE HOT AT ALL TIMES HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED RADIATOR COOLANT TEMPERATURE SENSOR RED WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLU WIRE WHT/RED WIRE YEL/BLK WIRE YEL/BLU WIRE

2.7L TURBO 3.0L TURBO DIESEL AMBIENT AIR TEMPERATURE SENSOR B+ VOLT BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/YEL WIRE BLK/YRL WIRE BLOCK ENGINE COOLANT FLOW CONTROL VALVE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BRN WIRE BRN/YEL WIRE CLOSE CTRL COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE ENGINE COOLANT BYPASS VALVE ENGINE COOLANT TEMPERATURE SENSOR 1 ENGINE COOLANT TEMPERATURE SENSOR 5 ENGINE COOLANT TEMPERATURE SENSOR 6 FAN RLY CTRL GRN/BRN WIRE GRN/VIO WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/VIO WIRE HEATER COOLANT PUMP HI SPD COOLING J155 (2.7L TURBO) J165 (3.0L TURBO DIESEL) J157 (2.7L TURBO) LOGIC LOWER COOLING FAN MOTOR MAIN ENGINE COOLANT FLOW CONTROL VALVE NCA WIRE OPEN CTRL POS SIG RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RIGHT COOLING FAN MOTOR VIO/BLU WIRE WHT/RED WIRE YEL WIRE YEL/BLU WIRE

2.7L TURBO BACKUP LAMPS CIRCUIT BASE BODY/CHASSIS BATTERY FUSE BLOCK BLK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/GRN WIRE BRN/WHT WIRE CUSTOM, TRAIL BOSS LT, LTZ, RST, TRAIL BOSS CUSTOM PACKAGE GRN WIRE GRN/VIO WIRE GRY/BRN WIRE HOT AT ALL TIMES NCA WIRE RED/GRN WIRE RIGHT BACKUP LAMP RIGHT LOWER TAIL/STOP, TURN SIGNAL LAMP RIGHT REAR SIDE MARKER LAMP RIGHT TAIL LAMP ASSEMBLY RIGHT TAIL/STOP, TURN SIGNAL LAMP RIGHT UPPER TAIL/STOP, TURN SIGNAL LAMP VIO/GRY WIRE VIO/WHT WIRE WHT/VIO WIRE WORK TRUCK, LT PACKAGE

2.7L TURBO 3.0L TURBO DIESEL BATT POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LEFT END OF DASH) BRAKE APPLY SENSOR CONTROL BRAKE APPLY SENSOR SIG BRAKE PEDAL POSITION SENSOR BRAKE POSITION SENSOR BRN/GRN WIRE BRN/WHT WIRE CARGO BED LAMP CONTROL CARGO LAMP SW SIG COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM DRIVER OUTSIDE REAR VIEW MIRROR PUDDLE LAMP CONTROL PUDDLE LAMP CONTROL ENGINE CONTROL ENGINE CONTROL MODULE ENGINE CONTROL SENS LO REF 3 FRT TURN LAMP FEEDBACK SIG GMLAN DATA - (1) GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE HAZARD SW LT TURN SIG HAZARD SW RT TURN SIG HAZARD SW SIG HEADLAMP SW PARK LAMP SIG HOT AT ALL TIMES LAMP RELAY CONTROL LEFT HEADLAMP RELAY CONTROL LEFT LICENSE PLATE LAMP LF TURN SIG LAMP CONTROL LICENSE PLATE LAMP LR STOP/TURN LAMP CONTROL PARK LAMP RELAY CONTROL POLICE SELECT SUPPLY VOLT 4 PUDDLE LAMP CONTROL REAR LICENSE LAMP CONTROL RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RF TURN LAMP FEEDBACK SIG RF TURN SIG LAMP CONTROL RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT LICENSE PLATE LAMP RR STOP/TURN LAMP CONTROL SENS LO REF SER DATA (-) (1) STOP LAMP RELAY CONTROL SYSTEM TURN SIGNAL/ MULTI-FUNCTION SWITCH VEHICLE STABILITY CONTROL SWITCH VIO/BLU WIRE VIO/WHT WIRE VIO/YEL WIRE W/ FLEETSIDE PICK-UP BOX W/O FLEETSIDE PICK-UP BOX WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE

2.7L TURBO A/C EVAPORATOR TEMPERATURE SENSOR AIR INLET DOOR ACTUATOR AIR INLET DOOR ACTUATOR CTRL 1 AIR INLET DOOR ACTUATOR CTRL 2 AIR INLET DOOR ACTUATOR CTRL 3 AIR INLET DOOR ACTUATOR CTRL 4 AIR TEMPERATURE DOOR LOW REF BATTERY FUSE BLOCK BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BRN WIRE BRN WIRE BRN/GRN WIRE BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ENGINE COOLANT TEMPERATURE GAUGE EVAP TEMP SENSOR SIG GRN/BRN WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE HOT AT ALL TIMES HVAC CONTROL MODULE (BEHIND LEFT CENTER OF DASH) HVAC DOOR ACTUATOR CONTROL INSTRUMENT CLUSTER LEFT AIR TEMPERATURE DOOR ACTUATOR LOGIC LOW SPEED GMLAN SERIAL DATA 2 MODE DOOR ACTUATOR MODE DOOR ACTUATOR CONTROL 1 MODE DOOR ACTUATOR CONTROL 2 MODE DOOR ACTUATOR CONTROL 3 MODE DOOR ACTUATOR CONTROL 4 RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RIGHT AIR TEMPERATURE DOOR ACTUATOR RUN/CRANK IGNITION 1 VOLTAGE SIGNAL GROUND TEMP DOOR ACTUATOR CONTROL 1 TEMP DOOR ACTUATOR CONTROL 2 TEMP DOOR ACTUATOR CONTROL 3 TEMP DOOR ACTUATOR CONTROL 4 TEMP DOOR ACTUATOR CTRL 1 TEMP DOOR ACTUATOR CTRL 2 TEMP DOOR ACTUATOR CTRL 3 TEMP DOOR ACTUATOR CTRL 4 VIO/BLK WIRE VIO/GRN WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/GRN WIRE

2.7L TURBO 3.0L TURBO DIESEL A/C REFRIGERANT PRESSURE SENSOR AUXILIARY UNDERHOOD FUSE BLOCK BATTERY FUSE BLOCK BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/RED WIRE BRN WIRE BRN/GRY WIRE BRN/YEL WIRE CHARGE AIR COOLER COOLANT PUMP CHARGE AIR COOLER COOLANT PUMP RELAY COMPUTER DATA LINES SYSTEM ENGINE COOLANT TEMPERATURE SENSOR 2 ENGINE COOLANT TEMPERATURE SENSOR 3 ENGINE COOLANT TEMPERATURE SENSOR 4 GRN WIRE GRN/VIO WIRE GRY WIRE GRY/VIO WIRE HOT AT ALL TIMES HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED NCA WIRE RADIATOR COOLANT TEMPERATURE SENSOR RED WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RIGHT COOLING FAN MOTOR UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLU WIRE WHT/RED WIRE YEL/BLK WIRE YEL/BLU WIRE

2.7L TURBO 2.7L TURBO, 3.0L TURBO 3.0L TURBO 3.0L TURBO DIESEL AMBIENT AIR TEMPERATURE SENSOR B+ VOLT BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/YEL WIRE BLOCK ENGINE COOLANT FLOW CONTROL VALVE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BRN WIRE BRN/YEL WIRE CLOSE CTRL COMPUTER DATA COMPUTER DATA LINES SYSTEM ENGINE COOLANT BYPASS VALVE ENGINE COOLANT TEMPERATURE SENSOR 1 ENGINE COOLANT TEMPERATURE SENSOR 5 ENGINE COOLANT TEMPERATURE SENSOR 6 FAN RLY CTRL GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/VIO WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/VIO WIRE HEATER COOLANT PUMP HI SPD COOLING J157 (2.7L TURBO) LINES SYSTEM LOGIC LOWER COOLING FAN MOTOR MAIN ENGINE COOLANT FLOW CONTROL VALVE NCA WIRE OPEN CTRL POS SIG RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RIGHT COOLING FAN MOTOR VIO/BLU WIRE WHT/RED WIRE YEL WIRE YEL/BLU 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