GMC Sierra III (2013-2015) (left front lower side of engine block) Wiring diagrams

A/C COMPRESSOR A/C COMPRESSOR CLUTCH A/C COMPRESSOR SOLENOID VALVE AIR INLET DOOR ACTUATOR (BEHIND GLOVE BOX) AIR TEMP DOOR CONTROL AIR TEMP DOOR CONTROL AIR TEMP DOOR POSITION SIG BLK WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/YEL WIRE BRN/BLU WIRE BRN/LT GRN WIRE COMPUTER DATA LINES SYSTEM DISPLAY DK BLU/BRN WIRE DK BLU/YEL WIRE ENGINE COOLANT TEMPERATURE GAUGE EVAP CORE TEMP SENSOR SIG GRN WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE HVAC CONTROL MODULE (BEHIND THE UPPER GLOVE BOX) INSTRUMENT CLUSTER LEFT AIR TEMPERATURE DOOR ACTUATOR (PART OF HVAC MODULE) LEFT MODE DOOR ACTUATOR (UPPER LEFT SIDE OF HVAC MODULE) LOGIC MOST SERIAL DATA (+) LOWER LEFT AIR TEMP SENS SIG LOWER RIGHT AIR TEMP SENS SIG MOST SERIAL DATA (+) PASS AIR TEMP MOTOR CTRL PASS AIR TEMP DOOR CTRL PASS AIR TEMP DOOR POSITION SIG RED WIRE RIGHT AIR TEMPERATURE DOOR ACTUATOR (PART OF HVAC MODULE) SENS LOW REF UPPER RIGHT AIR TEMP SENS SIG VIO/GRN WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/LT GRN WIRE YEL WIRE YEL/BLK WIRE YEL/BRN WIRE

A/C CLUTCH A/C COMPRESSOR CLUTCH RELAY A/C COMPRESSOR CLUTCH RELY CTRL A/C PRESS SENS 5 VOLT REF 1 A/C REFRIGERANT PRESS SENS LO REF A/C REFRIGERANT PRESS SENS SIG A/C REFRIGERANT PRESSURE SENSOR AMBIENT AIR TEMPERATURE SENSOR (ON LEFT SIDE OF RADIATOR SUPPORT) AMBT AIR TEMP SNSR SIG B+ VOLT BATT+ VOLT BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/WHT WIRE BRN WIRE BRN/LT GRN WIRE BRN/RED WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COOL FAN 1 FUSE COOL FAN 2 FUSE DK BLU WIRE DK BLU/GRY WIRE ENG COOLANT TEMP SENS SIG ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) ENGINE CONTROLS FUSE GRN WIRE HI SPD COOLING FAN RLY CTRL HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES IGNITION RELAY LEFT COOLING FAN MOTOR (LEFT FRONT OF ENGINE COMPT) LO REF LT GRN WIRE RED/BRN WIRE RED/GRY WIRE RED/WHT WIRE RIGHT COOLING FAN MOTOR (RIGHT FRONT OF ENGINE COMPT) TCM/ECM FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/GRY WIRE

1 2 3 4 5 6 7 8 DOOR LOCK CONTROL DR LK CTRL 2 GROUND DR LK ACTUATOR UNLK CTRL ANTI-THEFT SYSTEM BLK WIRE BLK/GRY WIRE BLK/WHT WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN/GRN WIRE BRN/GRY WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM POWER DISTRIBUTION SYSTEM POWER DISTRIBUTION SYSTEM DK BLU WIRE DK BLU/YEL WIRE DOOR AJAR SW SIG LOCK SW SIG TRAILER BRAKE APPLY SIGNAL DOOR LOCK KEY SW UNLOCK SIG DOOR LOCKS, ANTI-THEFT SYSTEMS DOOR LOCKS, ANTI-THEFT SYSTEMS EXTERIOR LIGHTS SYSTEM DOOR LOCKS, ANTI-THEFT SYSTEMS INTERIOR LIGHTS SYSTEM DRIVER DOOR LOCK MTR STATUS DRV SEAT VENT MTR CNTRL (1) EXTERIOR LIGHTS SYSTEM WIPER/WASHER SYSTEM GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/VIO WIRE HAZARD SWITCH RIGHT TURN SIG WINDSHIELD WASHER SWITCH SIG HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM INADVERTENT POWER CONTROL INTERIOR LIGHTS SYSTEM COMPUTER DATA LINES SYSTEM INTERIOR LIGHTS SYSTEM DOOR LOCKS, ANTI-THEFT SYSTEMS LR STOP DRL SPLY VOLT LT GRN WIRE LT GRN/WHT WIRE LT GRN/YEL WIRE PASS SEAT VENT MTR CNTRL (1) RED/YEL WIRE RR DR AJAR SW SIG MOTOR STATUS SIG RR LK MTR STATUS SIG COURTESY LAMP SW SIG SEATS SYSTEM SHIFT INTERLOCK SOLENOID CNTRL SHIFT INTERLOCK SYSTEM SIG GROUND SUPPLY VOLTAGE LED BACKLT DIMMING CTRL UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VIO/BLK WIRE VIO/BLU WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/DK BLU WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/VIO WIRE YEL/WHT WIRE

12 VOLT REF 24 25 HI SPD GMLAN SRL DATA (-) HI SPD GMLAN SRL DATA (+) 5360 5361 BRK APPLY SENS LO REF 7 13 STP LP SW SIG 5 VOLT SIG ADAP CRUISE CTRL UP DWN SW SIG BATT POS VOLT BCM 1 PANEL FUSE FUSE BLOCK BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRAKE PEDAL POSITION SENSOR (BEHIND BRAKE PEDAL ASSEMBLY) BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRUISE CTRL SET/COAST/ RES/ACC SW SIG CRUISE/ETC/TCC/BRAKE SIG DK BLU WIRE DK BLU/BLK WIRE DK BLU/WHT WIRE DK BLU/YEL WIRE ECM IGN FUSE ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) GROUND GRY/GRN WIRE GRY/RED WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT PANEL JUNCTION BLOCK LEFT INSTRUMENT LT GRN/WHT WIRE RED/WHT WIRE SENSOR LO REF SIG GND THRTL ACTR CTRL CLOSE THRTL ACTR CTRL OPEN UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VIO/GRN WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/WHT WIRE

BLK WIRE BRN/VIO WIRE BRN/YEL WIRE DRIVER OUTSIDE REARVIEW MIRROR DRIVER OUTSIDE REARVIEW MIRROR GLASS HOT AT ALL TIMES HTD MIR FUSE HVAC CONTROL MODULE (BEHIND THE UPPER GLOVE BOX) NCA WIRE PASSENGER OUTSIDE REARVIEW MIRROR PASSENGER OUTSIDE REARVIEW MIRROR GLASS REAR DEFOG FUSE REAR DEFOGGER GRID REAR DEFOGGER IND REAR DEFOGGER RELAY REAR DEFOGGER RLY CTRL REAR DEFOGGER SWITCH LOGIC UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT)

BLK/BRN WIRE BLK/DK BLU WIRE BLK/LT GRN GRY/BLU WIRE BLK/LT GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/GRY WIRE BLU/WHT WIRE BRN WIRE BRN/WHT WIRE BRN/YEL WIRE CAMSHAFT POSITION SENSOR (FRONT OF ENGINE, ABOVE CRANK PULLEY) CNTRL 1 CNTRL 2 CRANKSHAFT POSITION SENSOR (RIGHT REAR OF ENGINE) DK BLU WIRE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) FUEL INJ 1 CTRL FUEL INJ 2 CTRL FUEL INJ 3 CTRL FUEL INJ 4 CTRL FUEL INJ 5 CTRL FUEL INJ 6 CTRL GRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRY/BLU WIRE LOW REF LT GRN WIRE LT GRN/DK BLU WIRE VALVE LIFTER OIL MANIFOLD ASSEMBLY (BELOW INTAKE MANIFOLD) VIO/DK BLU WIRE VIO/GRN WIRE VIO/GRY WIRE WHT/GRN WIRE WHT/RED WIRE YEL/VIO WIRE YEL/WHT WIRE

5 VOLT REF 821 822 6354 TRANSMISSIONS SYSTEM AIR TEMP SENS SIG BANK 1 SENSOR 1 BANK 1 SENSOR 2 BANK 2 SENSOR 1 BANK 2 SENSOR 2 BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/GRY WIRE BLK/LT GRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/LT GRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE DK BLU WIRE DK BLU/WHT WIRE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) FUEL RAIL PRESSURE SENSOR (TOP LEFT REAR OF ENGINE) GRY WIRE GRY/BLU WIRE GRY/RED WIRE GRY/WHT WIRE HUMIDITY SENS SIG TAC MTR CTRL KNOCK SENS 1 SIG KNOCK SENS 2 SIG KNOCK SENSOR 1 (LOWER LEFT SIDE OF ENGINE) KNOCK SENSOR 2 (LOWER RIGHT SIDE OF ENGINE) LOW REF LT GRN WIRE LT GRN/DK BLU WIRE LT GRN/WHT WIRE LT GRN/YEL WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (MAP) (TOP REAR OF ENGINE) MAP SENS SIG 5 VOLT REF MULTIFUNCTION INTAKE AIR SENSOR (RIGHT SIDE OF ENGINE COMPT, IN AIR INTAKE DUCT) NCA WIRE NEAR FAN SHROUD) RED WIRE REVERSE SW SIG SENS SIG SIG GND SPD SENS SIG LOW REF INPUT SIGNAL STARTING/CHARGING SYSTEM TAC CTRL OPN THROTTLE BODY (TOP RIGHT FRONT OF ENGINE) TRANSMISSIONS SYSTEM 179 1174 3212 VIO WIRE VIO/ DK BLU WIRE VIO/DK BLU WIRE VIO/GRY WIRE VIO/LT GRN WIRE VIO/WHT WIRE VOLT REF FRP SENS SIG WHT WIRE WHT/BLK WIRE WHT/BRN WIRE WHT/DK BLU WIRE WHT/GRY WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/DK BLU WIRE YEL/WHT WIRE

BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/LT GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE BRN/YEL WIRE CAMSHAFT POSITION SENSOR (FRONT OF ENGINE, ABOVE CRANK PULLEY) CNTRL 1 CNTRL 2 CNTRL 4 CRANKSHAFT POSITION SENSOR (RIGHT REAR OF ENGINE) DK BLU WIRE DK BLU/WHT WIRE DK BLU/YEL WIRE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) FUEL INJ 1 CTRL FUEL INJ 2 CTRL FUEL INJ 3 CTRL FUEL INJ 4 CTRL FUEL INJ 5 CTRL FUEL INJ 6 CTRL GRY WIRE GRY/BLU WIRE GRY/DK BLU WIRE LOW REF LT GRN WIRE LT GRN/BLK WIRE LT GRN/DK BLU WIRE LT GRN/GRY WIRE LT GRN/WHT WIRE NCA WIRE PPL/LT GRN WIRE SPARK PLUG VALVE LIFTER OIL MANIFOLD ASSEMBLY (BELOW INTAKE MANIFOLD) VIO WIRE VIO/DK BLU WIRE WHT/LT GRN WIRE WHT/RED WIRE WHT/YEL WIRE YEL/DK BLU WIRE YEL/GRY WIRE YEL/VIO WIRE YEL/WHT WIRE

821 822 6354 TRANSMISSIONS SYSTEM AIR TEMP SENS SIG BANK 1 SENSOR 1 BANK 1 SENSOR 2 BANK 2 SENSOR 1 BANK 2 SENSOR 2 BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/GRY WIRE BLK/LT GRN WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE BRN/LT GRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE DK BLU WIRE DK BLU/WHT WIRE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) FUEL RAIL PRESS SEN SIG FUEL RAIL PRESSURE SENSOR (TOP LEFT REAR OF ENGINE) GRY WIRE GRY/DK BLU WIRE GRY/RED WIRE GRY/WHT WIRE HUMIDITY SENS SIG TAC MTR CTRL KNOCK SENS 1 SIG KNOCK SENS 2 SIG KNOCK SENSOR 1 (LOWER LEFT SIDE OF ENGINE) KNOCK SENSOR 2 (LOWER RIGHT SIDE OF ENGINE) LOW REF LT GRN WIRE LT GRN/DK BLU WIRE LT GRN/WHT WIRE LT GRN/YEL WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (MAP) (ON TOP OF INTAKE MANIFOLD) MAP SENS SIG 5 VOLT REF MULTIFUNCTION INTAKE AIR SENSOR (RIGHT SIDE OF ENGINE COMPT, IN AIR INTAKE DUCT) NCA WIRE NEAR FAN SHROUD) RED WIRE REVERSE SW SIG SIG GND SPD SENS SIG LOW REF INPUT SIGNAL STARTING/CHARGING SYSTEM TAC CTRL OPN THROTTLE BODY (TOP RIGHT FRONT OF ENGINE) TRANSMISSIONS SYSTEM 179 1174 3212 VIO WIRE VIO/ DK BLU WIRE VIO/DK BLU WIRE VIO/GRY WIRE VIO/LT GRN WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/BRN WIRE WHT/DK BLU WIRE WHT/GRY WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/DK BLU WIRE YEL/WHT WIRE

BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/LT GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE BRN/YEL WIRE CAMSHAFT POSITION SENSOR (FRONT OF ENGINE, ABOVE CRANK PULLEY) CNTRL 1 CNTRL 2 CNTRL 4 CRANKSHAFT POSITION SENSOR (RIGHT REAR OF ENGINE) DK BLU WIRE DK BLU/WHT WIRE DK BLU/YEL WIRE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) FUEL INJ 1 CTRL FUEL INJ 2 CTRL FUEL INJ 3 CTRL FUEL INJ 4 CTRL FUEL INJ 5 CTRL FUEL INJ 6 CTRL GRY WIRE GRY/BLU WIRE GRY/DK BLU WIRE LOW REF LT GRN WIRE LT GRN/BLK WIRE LT GRN/DK BLU WIRE LT GRN/GRY WIRE LT GRN/WHT WIRE NCA WIRE PPL/LT GRN WIRE SPARK PLUG VALVE LIFTER OIL MANIFOLD ASSEMBLY (BELOW INTAKE MANIFOLD) VIO WIRE VIO/DK BLU WIRE WHT/LT GRN WIRE WHT/RED WIRE WHT/YEL WIRE YEL/DK BLU WIRE YEL/GRY WIRE YEL/VIO WIRE YEL/WHT WIRE