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

ACT FORWARD CTRL ADJUSTABLE PEDAL MOTOR ADJUSTABLE PEDAL POSITION SENSOR BLK WIRE BLK/BLU WIRE BLK/GRY WIRE BLU WIRE BLU/GRN WIRE COMPUTER DATA LINES SYSTEM DLC/DSM FUSE DRIVER SEAT MEMORY SWITCH DRVR PWR SEAT FUSE EXIT FORWARD SIG GRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE HIGH REF HOT AT ALL TIMES INSTRUMENT PANEL JUNCTION BLOCK INSTRUMENT PANEL MULTI- FUNCTION SWITCH LEFT INSTRUMENT PANEL FUSE BLOCK LOW REF LOW REFERENCE LOW SPD GMLAN LT GRN/VIO WIRE NETWORK BUS 8 PEDAL SENS SIG POSITIVE VOLT REARWARD CTRL REARWARD SIG RED/BRN WIRE RED/YEL WIRE SEAT MEMORY CONTROL MODULE SET SIG SET- SWITCH SIG 1 WHT WIRE WHT/GRY WIRE WHT/RED WIRE YEL WIRE

12 VOLT REFERENCE A/C CMPRSR MDL/BATT RVC FUSE ACCESSORY VOLT ACCESSORY WAKEUP SER DATA ANTI-LOCK BRAKES SYSTEM ANTI-THEFT SYSTEM BATT POSITIVE VOLT BLK WIRE BLK/GRY WIRE BLK/WHT WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN/GRN WIRE BRN/GRY WIRE BRN/LT GRN WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COURTESY LAMP SW SIG CRUISE CONTROL SYSTEM CRUISE CONTROL SYSTEM WIPER/WASHER SYSTEM CTRL SW SIG CURRENT SENS CTRL CURRENT SENS SIG DIMMER SW HIGH BEAM SIG DK BLU WIRE DOOR LOCK ACTUATOR UNLOCK CTRL DOOR LOCK CONTROL DOOR LOCK CTRL 2 DOOR LOCK KEY SW UNLOCK SIG DOOR LOCKS, ANTI-THEFT SYSTEMS DOOR LOCKS, ANTI-THEFT, INTERIOR LIGHTS SYSTEMS DRIVER DOOR LOCK MTR STATUS ELECTRONIC MUFFLERS SYSTEM EXHAUST BRAKE SW CTRL EXTERIOR LIGHTS, INTERIOR LIGHTS SYSTEMS GAP UP/DOWN SW SIG GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GROUND GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/VIO WIRE GRY/YEL WIRE HAZARD SW LEFT TURN SIG HAZARD SWITCH RIGHT TURN SIG HDLP SW FLASH TO PASS SIG HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM HORNS SYSTEM HI SPEED GMLAN SER DATA (-) 1 HOOD AJAR SW SIG HORN SW SIG HOT AT ALL TIMES IGNITION KEY RESISTOR SIG IGNITION SWITCH IMMOBILIZER RETURN IMMOBILIZER SUPPLY VOLT INADVERTENT POWER CTRL INTERIOR LP CTRL KEY-IN IGNITION SWITCH LED AMBIENT LIGHTING CTRL LED BACK LT DIMMING CTRL LEFT FRONT DOOR AJAR SW SIG WIRELESS CHARGING SYSTEM CHARGE IND CTRL LF DRL CTRL LH DETECTION SIG LH HDLMP LOW BEAM CTRL LIN BUS 3 LIN INTERCONNECT NTWRK BUS 2 LIN INTERCONNECT NTWRK BUS 3 LOCK CTRL LOCK SW SIG 16 17 TRAILER BRAKE APPLY SIG LOW REFERENCE LOW SPEED GMLAN SERIAL DATA LT GRN WIRE LT GRN/VIO WIRE LT GRN/YEL WIRE MOTOR STATUS SIG NETWORK BUS 11 NETWORK BUS 5 OFF OFF/RUN/CRANK VOLT PASS SEAT VENT MTR CTRL 1 POWER DISTRIBUTION SYSTEM PUDDLE LAMP CTRL RAP RELAY COIL CTRL REAR LICENSE LP CTRL RED/YEL WIRE RELAY COIL SUPPLY VOLT RF DOOR AJAR SW SIG RF TURN SIG LP CTRL RH DETECTION SIG RH HDLMP LOW BEAM CTRL RR LK MTR STATUS SIG RR TURN SIG LP CTRL RUN WIRE RUN/CRANK IGNITION 1 VOLT RUN/CRANK RELAY COIL CTRL SEATS SYSTEM SELECT SW PERFORMANCE SIG SERIAL DATA COMM ENABLE SET/COAST/RESUME/ ACCELERATE SW SIG SHIFT INTERLOCK SOLENOID CTRL SHIFT INTERLOCK SYSTEM SIG GROUND STANDING LAMP RLY CTRL STARTING/CHARGING SYSTEM STOP LP RLY COIL CTRL TAP UP/TAP DOWN SW SIG TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK UNLOCK CTRL 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 WINDSHIELD WASHER RLY CTRL WINDSHIELD WASHER SW SIG WINDSHIELD WIPER SW LOW SIG WIPER MTR PARK SW SIG WIPER SW HIGH SIG WIPER/WASHER SYSTEM WIPER/WASHER SYSTEM POWER DISTRIBUTION SYSTEM YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/VIO WIRE YEL/WHT WIRE

ADJUSTABLE PEDAL CIRCUIT BLK WIRE BLK/BLU WIRE BLK/GRY WIRE BLU WIRE BLU/GRN WIRE BLU/VIO WIRE BLU/YEL WIRE BRN WIRE BRN/WHT WIRE DLC/DSM FUSE DOWN DOWN SW SIG DRIVER LEFT REAR SEAT HAPTIC MOVEMENT MOTOR DRIVER RIGHT REAR SEAT HAPTIC MOVEMENT MOTOR DRIVER SEAT LUMBAR SUPPORT HORIZONTAL MOTOR DRIVER SEAT LUMBAR SUPPORT PUMP DRIVER SEAT MEMORY SWITCH DRIVER SEAT RECLINE MOTOR DRVR PWR SEAT FUSE EXIT FORWARD SIG FORWARD SW SIG GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/GRN WIRE HIGH REF (2) HOT AT ALL TIMES LEFT INSTRUMENT PANEL FUSE BLOCK LOW REF PEDAL SENS SIG POSITION SENS SIG POSITIVE VOLT REARWARD SIG REARWARD SW SIG RED/BRN WIRE RED/YEL WIRE RWD SEAT MEMORY CONTROL MODULE SEAT MOTOR CONTROL SET SIG SET- SWITCH SIG 1 UP SW SIG UP SW SIG DOWN SW SIG VIO WIRE W/ LUXURY EDITION PACKAGE W/O LUXURY EDITION PACKAGE WHT WIRE WHT/BLK WIRE WHT/GRY WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE

BATTERY POSITIVE VOLT BLK WIRE BLK/DK BLU WIRE BLK/GRY WIRE BLK/LT GRN WIRE BLK/YEL WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/RED WIRE DRIVER INFORMATION CENTER DISPLAY ESC ELC EXH FUSE GMLAN SER DATA (-) (2) GMLAN SER DATA - (1) GRY/GRN WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT FRONT SHOCK ABSORBER ACTUATOR LEFT FRONT SHOCK ABSORBER ASSEMBLY LEFT FRONT SUSPENSION POSITION SENSOR LEFT REAR SHOCK ABSORBER ACTUATOR LEFT REAR SHOCK ABSORBER ASSEMBLY LEFT REAR SUSPENSION POSITION SENSOR LF DECREASE DAMPING CTRL LF INCREASE DAMPING CTRL LF STRUT POS SENS LOW REF LF STRUT SENS SIG LO SPD GMLAN SERIAL DATA 2 LOGIC LR STRUT MOTOR DECREASE LR STRUT MOTOR INCREASE LR STRUT SENS LOW REF LR STRUT SENS SIG LT GRN/GRY WIRE LT GRN/RED WIRE LT GRN/WHT WIRE NCA WIRE RED/LT GRN WIRE RF DECREASE DAMPING CTRL RF INCREASE DAMPING CTRL RF STRUT SENS LOW REF RF STRUT SENS SIG RIGHT FRONT SHOCK ABSORBER ACTUATOR RIGHT FRONT SHOCK ABSORBER ASSEMBLY RIGHT FRONT SUSPENSION POSITION SENSOR RIGHT REAR SHOCK ABSORBER ACTUATOR RIGHT REAR SHOCK ABSORBER ASSEMBLY RIGHT REAR SUSPENSION POSITION SENSOR RR STRUT MOTOR DECREASE RR STRUT MOTOR INCREASE RR STRUT POS SENS SIG RR STRUT SENS LOW REF SER DATA COMM ENABLE SUSPENSION CONTROL MODULE UNDERHOOD FUSE BLOCK VIO WIRE WHT WIRE WHT/BLK WIRE WHT/DK BLU WIRE WHT/GRY WIRE WHT/LT GRN WIRE YEL WIRE YEL/RED WIRE YEL/WHT WIRE

BATTERY POSITIVE VOLT BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/VIO WIRE COMPUTER DATA LINES SYSTEM DRIVER BACK SEAT HEATING ELEMENT DRIVER CUSHION SEAT HEATING ELEMENT DRV HTD BACK ELE CTRL DRV HTD BACK NTC SIG DRV HTD NTC LO REF DRV HTD SEAT ELE CTRL DRV HTD SEAT ELE LOW REF DRV HTD SEAT NTC SIG DRV SEAT VENT MTR CTRL 1 GRN/BLU WIRE GRN/VIO WIRE GROUND GRY/BLK WIRE HOT AT ALL TIMES IPC FUSE LEFT INSTRUMENT PANEL FUSE BLOCK LT HTD CLD SEAT FUSE NETWORK BUS 2 PASS HTD BACK ELE CTRL PASS HTD BACK NTC LO REF PASS HTD BACK NTC SIG PASS HTD SEAT ELE CTRL PASS HTD SEAT ELE LOW REF PASS HTD SEAT NTC LO REF PASS HTD SEAT NTC SIG PASS SEAT VENT MTR CTRL 1 PASSENGER BACK SEAT HEATING ELEMENT PASSENGER CUSHION SEAT HEATING ELEMENT RED/GRN WIRE RED/GRY WIRE RED/LT GRN WIRE RH FRT HTD CLD SEAT FUSE SEAT HEATING CONTROL MODULE VIO/WHT WIRE W/ VENTILATION HEATER WHT/BLU WIRE WHT/BRN WIRE WHT/GRY WIRE YEL/GRY WIRE

AUDIO LOW REF AUDIO SIG + BATT POS VOLT BK COAX AM/FM ANTENNA SIG BK COAX XM/HD BK LVDS INFOTAINMENT DISPLAY SIG BK USB USB SERIAL DATA BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/LT GRN WIRE CAMERA SIG 2 CELLULAR PHONE MICROPHONE COAX COMM SIG COMPUTER DATA LINES SYSTEM DET SIG DIGITAL RADIO ANTENNA DIM SIG DISPLAY RESET SIG DOWN SIG DOWN UP GMLAN SERIAL DATA GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INFOTMNT FUSE LCD DIMMING SIG LF SPEAKER (-) CTRL 1 LH RR SPEAKER CTRL (+) LH RR SPEAKER SIG (-) LT AUD SIG 2 LVDS NAVIGATION SYSTEM NCA WIRE ON SIG RADIO RADIO ANTENNA RADIO PRESETS STEERING WHEEL CONTROLS SWITCH RADIO VOLUME STEERING WHEEL CONTROLS SWITCH RED WIRE RED/VIO WIRE REQUEST SIG RF SPEAKER (-) CTRL 1 RF SPEAKER SIG (-) 1 RH RR SPEAKER (+) CTRL RH RR SPEAKER SIG (-) RIGHT INSTRUMENT PANEL FUSE BLOCK RT AUD SIG 2 SCREEN 2 SWITCH SIG 2 USB USB/ OBS DET FUSE VIO WIRE VIO/GRY WIRE VOICE LOW VOICE SIG W/ ONSTAR W/O ONSTAR WHT WIRE WHT/BLU WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE

AUXILIARY AUDIO INPUT BACK SIG BATT POS VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/LT GRN WIRE BUS 12 COMPUTER DATA LINES SYSTEM DIMMING CTRL DOWN DOWN SIG FORWARD SIG GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GROUND GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INSTRUMENT PANEL JUNCTION BLOCK LOGIC LT BLU WIRE LT GRN WIRE LVDS MUTE NCA WIRE NETWORK RED/VIO WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT STEERING WHEEL CONTROLS SWITCH SEATS SYSTEM SEEK DOWN SEEK UP SELECT STR WHL CNTRL FUSE UP SIG USB VIO WIRE VIO/GRY WIRE VOICE W/ FRONT COMPARTMENT FLOOR CUSTOM CONSOLE WHT WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE

1-VT 2-VT AMP FUSE AUDIO SIG + BATT POS VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE CAMERA SIGNAL 2 CELL CELLULAR PHONE MICROPHONE CELLULAR PHONE NAVIGATION, DIGITAL RADIO ANTENNA COAX COMMUNICATION ENABLE COMPUTER DATA LINES SYSTEM DISPLAY SIG + GMLAN SERIAL DATA (+) 9 GPS GPS ANT SIG GPS/CELL GRY/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES HUMAN MACHINE INTERFACE CONTROL MODULE (BEHIND GLOVE BOX) INFOTAINMENT INSTRUMENT PANEL JUNCTION BLOCK LOGIC LOW REF LT GRN/WHT WIRE LVDS MICROPHONE SIG MOST CONTROL MOST SERIAL DATA (+) NAVIGATION ANTENNA SIGNAL SPLITTER NCA WIRE NETWORK BUS 5 RED WIRE RED/VIO WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SER DATA TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE USB USB GY USB RECEPTACLE USB SERIAL DATA USB SRL DATA VOICE SIG W/ DIGITAL AUDIO SYSTEM W/ ONSTAR W/ ONSTAR W/O ONSTAR W/O ONSTAR WHT/BLU WIRE WHT/DK BLU WIRE WHT/GRN WIRE WHT/LT GRN WIRE WHT/VIO WIRE X-BK YEL 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

BATT POS VOLT BCM 1 FUSE BCM 2 FUSE BLK WIRE BLK/GRY WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN/GRY WIRE BRN/LT GRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DRIVER INFORMATION CENTER DISPLAY FRT WASH FUSE FRT WPR FUSE GRY WIRE GRY/GRN WIRE GRY/VIO WIRE HI LO HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT PANEL JUNCTION BLOCK J124 (EXCEPT 6.6L) J123 (6.6L) LEFT INSTRUMENT PANEL FUSE BLOCK LO WASHER FLUID IND CTRL LOGIC LOW REF MIST MIST HI OFF LO INT INT MTR PARK SW SIG OFF RED WIRE RED/BRN WIRE RED/WHT WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SERIAL DATA (-) (1) SERIAL DATA 2 TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK VIO WIRE W/ BASE EQUIPMENT W/O BASE EQUIPMENT WASHER RLY CTRL WASHER SW SIG WASHER SWITCH WHT WIRE WHT/BLK WIRE WHT/VIO WIRE WINDSHIELD WASHER FLUID LEVEL SWITCH WINDSHIELD WASHER PUMP WINDSHIELD WASHER PUMP RELAY WINDSHIELD WIPER MOTOR WINDSHIELD WIPER MTR RLY COIL SUPPLY VOLT WINDSHIELD WIPER RELAY WINDSHIELD WIPER SPEED CONTROL RELAY WINDSHIELD WIPER SW HI SIG WIPER SW HI SIG WIPER SW LOW SIG WIPER SWITCH YEL/BLU WIRE YEL/BRN WIRE