GMC Sierra III facelift (2015-2018) blk Wiring diagrams

ACC WAKEUP SER DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) DATA LINK CONNECTOR DK BLU WIRE DK BLU/YEL WIRE DLC/ DSM FUSE DRIVER SEAT HEATING, COOLING SWITCH DRIVER WINDOW MOTOR DRIVER WINDOW SWITCH GRN/BRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GROUND DISTRIBUTION SYSTEM HI SPD SER DATA (-) 1 HI SPD SER DATA (-) 1 LIN SER DATA BUS 1 HOT AT ALL TIMES IMMOBILIZER CONTROL MODULE INSTRUMENT PANEL JUNCTION BLOCK LEFT INSTRUMENT PANEL FUSE BLOCK LIN NETWORK BUS 11 LIN NETWORK BUS 5 LIN SER DATA BUS 11 LIN SER DATA BUS 2 LIN SER DATA BUS 3 LIN SER DATA BUS 4 LIN SER DATA BUS 5 LIN SER SER DATA BUS 4 LO SPD SER DATA LOGIC LOGIC LEFT REAR WINDOW SWITCH LT GRN WIRE LT GRN/DK BLU WIRE LT GRN/GRY WIRE LT GRN/WHT WIRE LT GRN/YEL WIRE PASSENGER SEAT HEATING, COOLING SWITCH PEPS/ HVAC FUSE POWER DISTRIBUTION SYSTEM RED/VIO WIRE RED/WHT WIRE RIGHT REAR WINDOW SWITCH SER COMM ENABLE VIO/YEL WIRE WHT WIRE WHT/DK BLU WIRE

ACC WAKEUP SER DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) DATA LINK CONNECTOR DK BLU WIRE DK BLU/YEL WIRE DLC/ DSM FUSE DRIVER SEAT HEATING, COOLING SWITCH DRIVER WINDOW MOTOR DRIVER WINDOW SWITCH GRN/BRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GROUND DISTRIBUTION SYSTEM HI SPD SER DATA (-) 1 HI SPD SER DATA (-) 1 LIN SER DATA BUS 1 HOT AT ALL TIMES IMMOBILIZER CONTROL MODULE INSTRUMENT PANEL JUNCTION BLOCK LEFT INSTRUMENT PANEL FUSE BLOCK LIN NETWORK BUS 11 LIN NETWORK BUS 5 LIN SER DATA BUS 11 LIN SER DATA BUS 2 LIN SER DATA BUS 3 LIN SER DATA BUS 4 LIN SER DATA BUS 5 LIN SER SER DATA BUS 4 LO SPD SER DATA LOGIC LOGIC LEFT REAR WINDOW SWITCH LT GRN WIRE LT GRN/DK BLU WIRE LT GRN/GRY WIRE LT GRN/WHT WIRE LT GRN/YEL WIRE PASSENGER SEAT HEATING, COOLING SWITCH PEPS/ HVAC FUSE POWER DISTRIBUTION SYSTEM RED/VIO WIRE RED/WHT WIRE RIGHT REAR WINDOW SWITCH SER COMM ENABLE VIO/YEL WIRE WHT WIRE WHT/DK BLU WIRE

ACC WAKEUP SER DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) DATA LINK CONNECTOR DK BLU WIRE DK BLU/YEL WIRE DLC/ DSM FUSE GRN/BLU WIRE GRN/BRN WIRE GRN/VIO WIRE GRN/WHT WIRE GROUND DISTRIBUTION SYSTEM HI SPD SER DATA (-) 1 HI SPD SER DATA (-) 1 LIN SER DATA BUS 1 HOT AT ALL TIMES INSTRUMENT PANEL JUNCTION BLOCK LEFT INSTRUMENT PANEL FUSE BLOCK LIN NETWORK BUS 5 LIN SER DATA BUS 11 LIN SER DATA BUS 2 LIN SER DATA BUS 3 LIN SER DATA BUS 4 LO SPD SER DATA LT GRN WIRE LT GRN/DK BLU WIRE LT GRN/GRY WIRE LT GRN/WHT WIRE LT GRN/YEL WIRE PEPS/ HVAC FUSE POWER DISTRIBUTION SYSTEM RED/VIO WIRE RED/WHT WIRE SER DATA COMM ENABLE VIO/YEL WIRE WHT WIRE WHT/DK BLU WIRE

AUTOMATIC TRANSMISSION ASSEMBLY AUXILIARY BATTERY AUXILIARY BATTERY FUSE BLOCK BATTERY BATTERY FUSE BLOCK BLK WIRE BLK/BRN WIRE BLK/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) CHARGING CIRCUIT COMPUTER DATA LINES SYSTEM DK BLU WIRE ECM IGN FUSE ENGINE CONTROL MODULE FUSE 2 GMLAN SERIAL DATA - 1 HIGH SPEED GMLAN SERIAL DATA (-) (1) HOT W/ IGNITION MAIN RELAY ENERGIZED IGN KEY SIG IGNITION SWITCH LOW REF OFF OFF/RUN/CRANK VOLT PPL/BLK WIRE RED WIRE RED/GRN WIRE RED/YEL WIRE RUN WIRE RUN/CRANK IGN 1 VOLT SERIAL DATA (-) (1) STARTER ENABLE RELAY CTRL STARTER MOTOR STARTER RELAY STRTR FUSE TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION PARK/ NEUTRAL SIGNAL 1 TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK VIO/LT GRN WIRE WHT WIRE WHT/BLK WIRE WHT/GRY WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE

2017 MODEL YEAR 2018 MODEL YEAR A/C SENS SIG AIR CONDITIONING SYSTEM APP LOW REF 1 APP LOW REF 2 APP SENS SIG (2) APP SENS SIG 1 BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/VIO WIRE BLK/WHT WIRE BRAKE SIG BRN WIRE BRN/RED WIRE BRN/WHT WIRE CHARGE IND CTRL CLUTCH RLY CTRL COIL CTRL COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DK BLU WIRE ENABLE RLY CTRL ENGINE CONTROL MODULE EVAPORATIVE EMISSIONS VENT SOLENOID VALVE FUEL PUMP FUSE FUEL PUMP RELAY FUSE 2 GRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE HOT AT ALL TIMES HUMIDITY SENS SIG IGNITION 1 VOLT IND CTRL LOW REF MAF SENS SIG MULTI-FUNCTION INTAKE AIR SENSOR PARK/NEUTRAL SIG (1) PRESS SENS SIG PRIMARY FUEL PUMP AND LEVEL SENSOR ASSEMBLY PRIMARY FUEL PUMP, PRIMARY RLY CTRL RED/BRN WIRE RED/GRN WIRE RED/LT GRN WIRE SERIAL DATA (-) (1) STARTING/ CHARGING SYSTEM STARTING/CHARGING SYSTEM TEMP SENS SIG TO ENGINE CONTROLS IGNITION RELAY (DIAGRAM 2 OF 10) TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK VENT SOL CTRL VIO/DK BLU WIRE VIO/LT GRN WIRE VIO/YEL WIRE WAKEUP SERIAL DATA WHT WIRE WHT/BLU WIRE WHT/GRY WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

A/C COMPRESSOR CLUTCH RELAY ACCELERATOR PEDAL POSITION SENSOR BLK WIRE BLK/BLU WIRE BLK/VIO WIRE BLU WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE ECM IGN FUSE ENG FUSE ENGINE CONTROLS IGNITION RELAY FROM FUEL PUMP FUSE (DIAGRAM 1 OF 10) GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE HOT W/ IGNITION MAIN RELAY ENERGIZED RED WIRE RED/BRN WIRE RED/LT GRN WIRE TCM/ ECM FUSE THROT CONT FUSE UNDERHOOD FUSE BLOCK VIO WIRE VIO/DK BLU WIRE VIO/LT GRN WIRE W/O BASE EQUIPMENT W/ BASE EQUIPMENT WHT WIRE WHT/RED WIRE YEL WIRE YEL/WHT WIRE

ALTERNATIVE FUEL PRESSURE SENSOR ALTERNATIVE FUEL TANK TEMPERATURE SENSOR BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/YEL WIRE BRN/WHT WIRE CHK ENG CNG HIGH PRESSURE REGULATOR TEMPERATURE SENSOR COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ENGINE OIL PRESSURE IND FUEL GAUGE IND GMLAN GRY WIRE GRY/BLK WIRE GRY/GRN WIRE IND CTRL INSTRUMENT CLUSTER LO SPD LOGIC MALFUNCTION IND LAMP (MIL) RED/WHT WIRE VIO/DK BLU WIRE

ALTERNATIVE FUEL FUSE HOLDER 1 ALTERNATIVE FUEL FUSE HOLDER 2 ALTERNATIVE FUEL INJECTOR RELAY ALTERNATIVE FUEL SYSTEM DATA CONNECTOR BATT POS VOL BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/YEL WIRE CNG CUT-OFF SOLENOID VALVE 1 CNG CUT-OFF SOLENOID VALVE 2 CNG TANK TEMP OUT CNG TANK TEMP SENS SIG FUEL PUMP DISABLE CONTROL MODULE (BOTTOM OF BATTERY TRAY) FUSE GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES OEM FUEL PUMP VOL (IN) OEM FUEL PUMP VOL (OUT) RED WIRE RED/WHT WIRE VIO/DK BLU WIRE WHT WIRE WHT/GRN WIRE

ALTERNATIVE FUEL ENABLE RLY ALTERNATIVE FUEL INJ 1 CTRL ALTERNATIVE FUEL INJ 2 CTRL ALTERNATIVE FUEL INJ 3 CTRL ALTERNATIVE FUEL INJ 4 CTRL ALTERNATIVE FUEL INJ 5 CTRL ALTERNATIVE FUEL INJ 6 CTRL ALTERNATIVE FUEL INJ 7 CTRL ALTERNATIVE FUEL INJ 8 CTRL ALTERNATIVE FUEL INJ GROUND ALTERNATIVE FUEL INJECTOR 1 ALTERNATIVE FUEL INJECTOR 2 ALTERNATIVE FUEL INJECTOR 3 ALTERNATIVE FUEL INJECTOR 4 ALTERNATIVE FUEL INJECTOR 5 ALTERNATIVE FUEL INJECTOR 6 ALTERNATIVE FUEL INJECTOR 7 ALTERNATIVE FUEL INJECTOR 8 BLK WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE CNG CONTROL MODULE CNG INJ GROUND CNG TANK CUT-OFF 2 CTRL CNG TANK LOC 1 OFF CTRL CNG TANK PRESS INPUT CNG TANK TEMP INPUT COMPUTER DATA COOLANT TEMP INPUT DATA BUS - FUEL PRESSURE INPUT FUEL SELECT IND FUEL SELECT INDICATOR FUEL SELECT SW FUEL SELECT SWITCH FUEL TEMP SENS INPUT GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/RED WIRE GRN/WHT WIRE GROUND INSTRUMENT PANEL MULTI- FUNCTION SWITCH LINES SYSTEM LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE OEM INJ 1 INPUT OEM INJ 1 OUTPUT OEM INJ 2 INPUT OEM INJ 2 OUTPUT OEM INJ 3 INPUT OEM INJ 3 OUTPUT OEM INJ 4 INPUT OEM INJ 5 OUTPUT OEM INJ 6 OUTPUT OEM INJ 7 OUTPUT OEM INJ 8 OUTPUT OEM INJ INPUT 5 OEM INJ INPUT 6 OEM INJ INPUT 7 OEM INJ INPUT 8 OEM INJ POS VOLT BANK 1 OEM INJ POS VOLT BANK 2 ORG/BLK WIRE ORG/GRN WIRE PNK WIRE PNK/BLK WIRE PNK/GRN WIRE PNK/WHT WIRE PWR RED WIRE RED/WHT WIRE SERIAL K SOLENOID CTRL SW BATT POS TAN WIRE TAN/BLK WIRE TAN/BLU WIRE TAN/GRN WIRE TAN/WHT WIRE VIO/DK BLU WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/ORG WIRE WHT/PPL WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE

BANK 1 SENS 2 BANK 2 SENS 2 BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/WHT WIRE BLU WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE BPP SENS SIG BRAKE PEDAL POSITION SENSOR BRK APPLY BRN WIRE BRN/WHT WIRE CLUSTER SYSTEM COMPUTER DATA LINES SYSTEM CYCLE SIG DATA DK BLU WIRE DK GRN WIRE ECT SENS SIG ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) FUEL TANK SIG GRN/BLU WIRE GRN/GRY WIRE GRN/WHT WIRE GRY WIRE GRY/RED WIRE GRY/WHT WIRE INSTRUMENT INSTRUMENT CLUSTER SYSTEM INSTRUMENT PANEL JUNCTION BLOCK LOW REF LT BLU WIRE MAP SENS SIG NCA WIRE PLUG PNK WIRE PRESS SENS LOW REF RED WIRE RED/YEL WIRE SENS CTRL SENS LOW REF SENS SIG SOLENOID CTRL SPARK STARTING/ CHARGING SYSTEM TEMP SENS LOW REF TOS SIG TRANSMISSIONS SYSTEM VIO/BLU WIRE VIO/DK BLU WIRE VIO/GRN WIRE VIO/WHT WIRE VSS LOW REF VSS SIG W/ BASE EQUIPMENT W/O BASE EQUIPMENT W/O BODY EQUIPMENT WHT WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/YEL WIRE YEL/BLU WIRE YEL/RED WIRE