GMC Sierra III facelift (2015-2018) engine control module Wiring diagrams

4.3L/ 5.3L 6.0L ACC WAKEUP SER DATA AUTOMATIC TRANSMISSION ASSEMBLY AUTOMATIC TRANSMISSION FLUID TEMPERATURE SENSOR SIG BATT + BLK WIRE BLK/LT GRN WIRE BLK/WHT WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DATA DK BLU WIRE DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE GMLAN DATA - (1) GRY/VIO WIRE HOT AT ALL TIMES HOT W/ IGNITION RELAY ENERGIZED IGN INSTRUMENT CLUSTER IPC FUSE J126 (4.3L, 5.3L) J125 (6.0L) LEFT INSTRUMENT PANEL FUSE BLOCK LOGIC LOW REF PARK/NEUTRAL SIG PC SOLENOID 1 CONTROL PC SOLENOID 2 CONTROL PC SOLENOID 3 CONTROL PC SOLENOID 4 CONTROL PC SOLENOID 5 CONTROL POWER DISTRIBUTION SYSTEM PPL/WHT WIRE PRESSURE CONTROL SOLENOID VALVE 1 PRESSURE CONTROL SOLENOID VALVE 2 PRESSURE CONTROL SOLENOID VALVE 3 PRESSURE CONTROL SOLENOID VALVE 4 PRESSURE CONTROL SOLENOID VALVE 5 RED/GRY WIRE RED/LT GRN WIRE REPLICATED TOS SIG SERIAL DATA (-) (1) SERIAL DATA (-) 1 IGN 1 VOLT SHIFT SOLENOID 1 CONTROL SHIFT SOLENOID 2 CONTROL SHIFT SOLENOID VALVE 1 SHIFT SOLENOID VALVE 2 SIG GND TCM/ECM FUSE TO TRANSMISSION INTERNAL MODE SWITCH (DIAGRAM 2 OF 2) TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID VALVE TOS SIG TOW/ HAUL IND TRANS IGN FUSE TRANSMISSION CONTROL MODULE TRANSMISSION FLUID TEMPERATURE SENSOR UNDERHOOD FUSE BLOCK VEHICLE SPD SENS LO REF VEHICLE SPD SENS SIG VEHICLE SPEED SENSOR VIO/BLK WIRE VIO/YEL WIRE WHT WIRE WHT/GRY WIRE WHT/LT GRN WIRE

AUTOMATIC TRANSMISSION ASSEMBLY BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLU WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE ENGINE CONTROL MODULE GRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/WHT WIRE GRY/YEL WIRE HI SPD SER DATA (-) 1 PARK/NEUTRAL SIG (1) RED WIRE TRANSMISSION CONTROL SOLENOID VALVE 1 TRANSMISSION CONTROL SOLENOID VALVE 2 TRANSMISSION CONTROL SOLENOID VALVE 3 TRANSMISSION CONTROL SOLENOID VALVE 4 TRANSMISSION CONTROL SOLENOID VALVE 5 TRANSMISSION CONTROL SOLENOID VALVE 6 TRANSMISSION CONTROL SOLENOID VALVE 7 TRANSMISSION CONTROL SOLENOID VALVE 8 TRANSMISSION CONTROL SOLENOID VALVE 9 TRANSMISSION FLUID TEMPERATURE SENSOR TRANSMISSION INPUT SHAFT SPEED SENSOR TRANSMISSION INTERMEDIATE SHAFT SPEED SENSOR TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION OUTPUT SHAFT SPEED SENSOR VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRY WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE

4.3L/ 5.3L 6.0L 6.6L 6.2L 6.2L, 5.3L 6.6L TURBO DIESEL AUTOMATIC TRANSMISSION ASSEMBLY BACKUP ALARM BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLUNT CUT) COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DATA BUS - DK BLU WIRE ENGINE CONTROL MODULE GMLAN SERIAL GMLAN SERIAL DATA BUS + GRN WIRE GRY WIRE GRY/BRN WIRE GRY/WHT WIRE GRY/YEL WIRE HI SPD IMS MODE SWITCH RETURN LOW REF ORG/BLK WIRE PARK/NEUTRAL SIG PNK/BLK WIRE PPL/BLK WIRE PRNDL A SIGNAL PRNDL B SIGNAL PRNDL C SIGNAL PRNDL P SIGNAL TRANSMISSION SENSOR B PRNDL S SIGNAL RED WIRE SERIAL DATA BUS- SIG A SIG B SIG C SIG P SW SIG A SW SIG B SW SIG C SW SIG P TAN/WHT WIRE TRAILER CAMPER PROVISION TRAILER CONNECTOR TRANSMISSION CONTROL MODULE TRANSMISSION FLUID PRESSURE SWITCH TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION INTERNAL MODE SWITCH AUTOMATIC TRANSMISSION ASSEMBLY TRANSMISSION SENSOR A TRANSMISSIONS SYSTEM VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/LT GRN WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/GRN WIRE

A/C CMPRSR MDL/BATT RVC FUSE BATT POS VOLT BATTERY BATTERY CURRENT SENSOR BATTERY FUSE BLOCK BLK WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/VIO WIRE BODY CONTROL MODULE BRN WIRE CHARGE IND CHARGE IND CTRL COMPUTER DATA LINES SYSTEM CURRENT SENS LOW REF CURRENT SENS SIG CURRENT SENS SPLY VOLT DK BLU WIRE DRIVER INFORMATION CENTER DISPLAY ECM IGN FUSE ENGINE CONTROL MODULE EXCEPT BASE EQUIPMENT BASE EQUIPMENT FUSE 2 GENERATOR GENERATOR FIELD DUTY CYCLE SIG GRN WIRE GRY WIRE GRY/GRN WIRE HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT CLUSTER INSTRUMENT PANEL JUNCTION BLOCK IPC FUSE LEFT INSTRUMENT PANEL FUSE BLOCK LOGIC LOW SPD GM LAN SERIAL DATA LT GRN WIRE PPL PPL/LT GRN WIRE RED WIRE RED/GRY WIRE RED/YEL WIRE RUN/CRANK IGN 1 VOLT UNDERHOOD FUSE BLOCK VIO WIRE WHT WIRE WHT/YEL WIRE YEL WIRE

5 VOLT REF 6.0L AUTO OFF BATT POSITIVE VOLT BCM 4 FUSE BCM 6 FUSE BCM 7 FUSE BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BPP SENS LO REF BPP SENS SIG BRAKE PEDAL POSITION SENSOR BRN/GRN WIRE BRN/WHT WIRE CARGO LAMP SWITCH SIGNAL COIL SPLY VOLT COMPUTER DATA LINES SYSTEM DK BLU WIRE ENGINE CONTROL MODULE GMLAN DATA - (1) GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/GRN WIRE GRY/RED WIRE HAZARD SW HAZARD SW LT TURN SIG HAZARD SW RT TURN SIG HAZARD SWITCH HEAD PARK HEADLAMP SW PARK LAMP SIG HEADLAMP SWITCH HOT AT ALL TIMES INSTRUMENT PANEL JUNCTION BLOCK INSTRUMENT PANEL MULTI- FUNCTION SWITCH LAMP RELAY CONTROL LAMP SPLY VOLT LEFT DETECTION SIG LEFT LICENSE PLATE LAMP LICENSE PLATE LAMP LT GRN/YEL WIRE PARK LAMP RELAY CONTROL PUDDLE LAMP SPLY VOLT RED/BRN WIRE RED/DK BLU WIRE RED/GRY WIRE RED/LT GRN WIRE RED/WHT WIRE RIGHT DETECTION SIG RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT LICENSE PLATE LAMP SENSOR LO REF SER DATA (-) (1) STOP LAMP SW SIGNAL VIO/BLU WIRE VIO/WHT WIRE VIO/YEL WIRE W/ REAR BUMPER W/O REAR BUMPER BASE EQUIPMENT EXCEPT BASE EQUIPMENT W/O REAR BUMPER WHT WIRE WHT/GRN WIRE YEL/BLK WIRE YEL/BLU WIRE

2500 HD, 3500 HD 1500 AJAR SW SIG ANTENNA BLK WIRE BLK/YEL WIRE BLU/WHT WIRE BRN/GRN WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DRIVER INFORMATION CENTER DISPLAY ENDGATE DOOR LATCH ASSEMBLY ENGINE CONTROL MODULE GMLAN SERIAL DATA - 1 GRY WIRE GRY/GRN WIRE GRY/WHT WIRE INSTRUMENT CLUSTER LEFT REAR DOOR LATCH ASSEMBLY (CREW CAB, DOUBLE CAB) (REAR OF LEFT REAR DOOR) LEFT REAR WINDOW SWITCH LIN BUS 4 LO SPD GMLAN SERIAL DATA LOGIC LOW REF LR DR LT GRN/GRY WIRE REMOTE CONTROL DOOR LOCK RECEIVER RFA RECEIVE SIG RFA RTN RFA SPLY VOLT RFA TRANSMIT SIG SECURITY IND SW SIG WHT WIRE WHT/BLU WIRE YEL WIRE YEL/GRN WIRE

2500 HD, 3500 HD 1500 ANTENNA BATT POSITIVE VOLT BCM 3 FUSE BLK WIRE BLK/YEL WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN/GRN WIRE COMPUTER DATA LINES SYSTEM DATA 1 (+) DK BLU WIRE DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE GMLAN SERIAL GMLAN SERIAL DATA - 1 GRN/GRY WIRE GRN/VIO WIRE GRY/BLK WIRE GRY/GRN WIRE HOOD AJAR SW SIG HOT AT ALL TIMES IMMOBILIZER CONTROL MODULE (NEAR IGNITION CYLINDER) IMMOBILIZER RETURN IMMOBILIZER SPLY VOLT INSTRUMENT CLUSTER LEFT INSTRUMENT PANEL FUSE BLOCK LIN BUS 11 LO SPD GMLAN SERIAL DATA LOGIC LOW REF RED/GRY WIRE RETURN SECURITY INDICATOR SPLY VOLT SW SIG WHT WIRE YEL WIRE

4.3L/ 5.3L 6.2L 6.6L 6.0L 6.2L, 6.6L 4.3L, 5.3L, 6.0L AUTOMATIC TRANSMISSION ASSEMBLY (4.3L, 5.3L, 6.0L) BLK/BRN WIRE BLK/GRN WIRE BLU/YEL WIRE BPP SENS LO REF BPP SENS SIG BRAKE PEDAL POSITION SENSOR (BEHIND BRAKE PEDAL ASSEMBLY) COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DK BLU WIRE DK BLU/YEL WIRE ENGINE CONTROL MODULE EXCEPT BASE EQUIPMENT GMLAN DATA BUS (+) 1 GRY WIRE GRY/RED WIRE INSTRUMENT PANEL JUNCTION BLOCK PARK/NEUTRAL SIG TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SWITCH WHT WIRE WHT/GRN WIRE WHT/GRY WIRE

4.3L, 5.3L, 6.2L 6.0L 4.3L/ 5.3L 6 SPEED 8 SPEED 6.0L 4.3L, 5.3L, 6.2L 6.0L 8 SPEED AUTOMATIC TRANSMISSION ASSEMBLY AUTOMATIC TRANSMISSION ASSEMBLY (6 SPEED) BATTERY BATTERY CURRENT SENSOR BATTERY FUSE BLOCK BLK WIRE BLK/GRY WIRE BLK/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) CHARGING CIRCUIT COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DK BLU WIRE ECM IGN FUSE ENGINE CONTROL MODULE FUEL PUMP PRIME FUSE FUSE 2 GMLAN SERIAL DATA - 1 GRY WIRE HIGH SPEED GMLAN SERIAL DATA (-) (1) HOT W/ ENGINE CONTROL MODULE WAKEUP RELAY ENERGIZED HOT W/ IGNITION MAIN RELAY ENERGIZED IGN KEY SIG IGNITION SWITCH J126 (4.3L, 5.3L) J125 (6.0L) LOW REF OFF OFF/RUN/ CRANK VOLT RED WIRE RED/GRN WIRE RED/YEL WIRE RUN WIRE RUN/CRANK IGN 1 VOLT SIG GND STARTER ENABLE RELAY CTRL STARTER MOTOR STARTER RELAY STRTR FUSE TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION PARK/ NEUTRAL SIG 1 UNDERHOOD FUSE BLOCK VIO/GRN WIRE VIO/LT GRN WIRE WHT WIRE WHT/BLK WIRE WHT/GRY WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE

4.3L, 6.2L, 5.3L 6.6L TURBO DIESEL 6.0L BLK WIRE COMPUTER DATA LINES SYSTEM DATA 1 (+) DK BLU WIRE ENGINE CONTROL MODULE FRONT AXLE ACT CTRL FRONT AXLE ENGAGEMENT ACTUATOR GRY/BLK WIRE HOT W/ IGNITION MAIN RELAY ENERGIZED IGN 1 VOLT J102 (6.6L TURBO DIESEL) J123 (6.6L TURBO DIESEL) J124 (EXCEPT 6.6L TURBO DIESEL) LOCK IND LOGIC LOW SIG SERIAL TRANS IGN FUSE TRANSFER CASE SHIFT CONTROL SWITCH UNDERHOOD FUSE BLOCK VIO/BLK WIRE WHT WIRE YEL/WHT WIRE