GMC Sierra III facelift (2015-2018) red/dk blu Wiring diagrams

5 VOLT REF 5 VOLT REF (1) TRACTION CTRL SW SIG AMBIENT LIGHT SENS SIG ANTI-LOCK BRAKES SYSTEM ANTI-LOCK BRAKES, CRUISE CONTROL, EXTERIOR LIGHTS SYSTEMS ANTI-LOCK BRAKES, HEADLIGHTS, INSTRUMENT CLUSTER SYSTEMS BACKUP LAMP RLY CTRL BATT POSITIVE VOLT BATTERY POSITIVE VOLTAGE BCM 1 FUSE BCM 2 FUSE BCM 3 FUSE BCM 4 FUSE BCM 5 FUSE BCM 6 FUSE BCM 7 FUSE BCM 8 FUSE BLK WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CARGO LAMP SW SIG CHILD LOCKOUT INDICATOR CTRL COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CRUISE/ETC/TCC BRAKE SIG CURRENT SENS LOW REF DIMMER SW LOW REF DIMMER SW SIG DK BLU WIRE DK BLU/VIO WIRE DOOR LOCKS, ANTI-THEFT SYSTEMS DRV DR LOCK SW LOCK SIG DRV DR LOCK SW UNLCK SIG EXHAUST BRAKE SW SIG SECURITY LOCK RLY CTRL EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS, INTERIOR LIGHTS SYSTEMS DOOR LOCKS, ANTI-THEFT SYSTEMS FOG LAMP RLY CTRL FRONT FOG LAMP SW SIG GRN/BRN WIRE GRN/GRY WIRE GRN/WHT WIRE GROUND GRY WIRE GRY/GRN WIRE GRY/RED WIRE GRY/WHT WIRE HAZARD SWITCH SIG HEADLAMP OFF SIG CTRL HEADLAMP SW ON SIG HEADLAMP SW PARK LAMP SIG HEADLIGHTS SYSTEM HIGH BEAM RLY CTRL HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES INDICATOR DIMMING CTRL INTERIOR LAMP DEFEAT SW SIG LED BACKLIGHT DIMMING CTRL LEFT INSTRUMENT PANEL FUSE BLOCK LEFT TRAILER TURN SIG LAMP LIGHTING CONTROL 2 LT GRN/GRY WIRE NETWORK BUS 4 OUT OF PARK SIG PARK BRK SW SIG PARK LAMP RLY CTRL POWER DISTRIBUTION SYSTEM INTERIOR LIGHTS SYSTEM RED/BRN WIRE RED/DK BLU WIRE RED/GRY WIRE RED/LT GRN WIRE RED/VIO WIRE RED/WHT WIRE REMOTE FUNCTION ACTR CTRL REMOTE FUNCTION ACTR RTN REMOTE FUNCTION ACTR TRANSMIT SIG RIGHT FRONT DRL CTRL RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT TRAILER TURN SIG LAMP RUN IGNITION 3 VOLT SEATS SYSTEM SECURITY INDICATOR CONTROL SENS LOW REF SERIAL DATA (+) (1) REMOTE FUNC ACTR RECEIVE SIG SERIAL DATA (-) (1) STARTING/CHARGING SYSTEM STOP LAMP SW SIG STOP/TURN LAMP CTRL TRAILER BRAKE APPLY SIG TURN SIGNAL LAMP CTRL VIO/BRN WIRE VIO/GRN WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/VIO WIRE WIPER SW HIGH SIG WIPER/WASHER SYSTEM YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/GRY WIRE

ACCY/RUN CRNK FUSE AIR BAG/ INFO FUSE BACKUP LAMP SUPPLY VOLT BATT POSITIVE VOLT BLK WIRE BLK/YEL WIRE BLU/GRN WIRE BRN WIRE BRN/WHT WIRE COMP SW COMPUTER DATA LINES SYSTEM DK BLU WIRE DRIVER OUTSIDE REAR VIEW MIRROR GLASS DRIVER OUTSIDE REAR- VIEW MIRROR EMERGENCY SWITCH GMLAN SRL DATA (-) 1 GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GROUND HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSIDE REAR VIEW MIRROR INSTRUMENT PANEL JUNCTION BLOCK KEYPAD CTRL KEYPAD GREEN LED KEYPAD GREEN LED IND KEYPAD RED LED IND WIRE KEYPAD RED LED WIRE KEYPAD SIG KEYPAD SIGNAL IND LEFT INSTRUMENT PANEL FUSE BLOCK LOGIC LOW REF LT GRN/BLK WIRE LT GRN/DK BLU WIRE LT GRN/WHT WIRE MIR SIG MIRROR DIMMING ONSTAR SWITCH ORG/ WIRE PHONE SWITCH RED WIRE RED/DK BLU WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RUN/CRANK IGN 1 VOLTAGE TELEMATICS BUTTON ASSEMBLY TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE TEMP SW VIO WIRE VIO/GRN WIRE W/ ONSTAR WHT WIRE WHT/GRN WIRE YEL WIRE YEL/BRN WIRE YEL/VIO WIRE YEL/WHT WIRE

AIR CONDITIONING SYSTEM AMBIENT LIGHT SENS SIG AMBIENT LIGHT/ SUNLOAD SENSOR AUTO B+ VOLT BCM 3 FUSE BCM 4 FUSE BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/VIO WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN WIRE BRN/VIO WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE FOG LAMP RLY CTRL FRONT FOG FRONT FOG LAMP SW SIG GRN/BRN WIRE GRN/GRY WIRE GRY/BLU WIRE HDLP DIMMER SW HI BEAM SIG HDLP HI BEAM RLY CTRL HDLP SW FLASH TO PASS SIG HDLP SW ON SIG HDLP OFF SIG CTRL HDLP SW PARK LP SIG HEAD HEADLAMP SWITCH HIGH SPD GMLAN SER DATA (-) 1 HOT AT ALL TIMES HVAC CONTROL MODULE INSTRUMENT PANEL JUNCTION BLOCK LEFT INSTRUMENT PANEL FUSE BLOCK LF HDLP LOW BEAM CTRL LH DRL CTRL LIGHT SWITCH LOW REF OFF PARK PARK BRAKE SWITCH PARK BRK SW SIG RED/DK BLU WIRE RED/GRY WIRE RH DRL CTRL RH HDLP LOW BEAM CTRL RIGHT INSTRUMENT PANEL FUSE BLOCK TURN SIGNAL/ MULTI-FUNCTION SWITCH W/ BASE EQUIPMENT W/O BASE EQUIPMENT WHT WIRE WHT/BLU WIRE WHT/VIO WIRE YEL WIRE YEL/BRN WIRE

6.0L 6.0L 6.6L AIR BAG/INFO FUSE AUXILIARY BATTERY AUXILIARY BATTERY FUSE BLOCK AUXILIARY BATTERY RELAY 1 AUXILIARY BATTERY RELAY 2 AUXILIARY GENERATOR BATTERY BCM 6 FUSE BCM 8 FUSE BLK WIRE BODY CONTROL MODULE CARGO LAMP RELAY ELECTRICAL AUXILIARY HEATER EXCEPT BASE EQUIPMENT EXTENDED CAB CREW CAB FROM UNDERHOOD FUSE BLOCK (DIAGRAM 3 OF 7) FUSE 1 FUSE 2 FUSE 3 FUSE 4 FUSE 7 FUSE 8 GENERATOR GENERATOR FUSE HOLDER GLOW PLUG CONTROL MODULE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INSTRUMENT PANEL JUNCTION BLOCK PASS SEAT FUSE PASSENGER PRESENCE MODULE PASSENGER SEAT ADJUSTER SWITCH PASSENGER WINDOW SWITCH POWER STEERING CONTROL MODULE POWER TAKE-OFF CONTROL MODULE REAR OF ENGINE COMPT) RED WIRE RED/BLU WIRE RED/BRN WIRE RED/DK BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/LT GRN WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT REAR WINDOW SWITCH RR SLD WNDW FUSE RT DR WNDW MTR FUSE SLIDING REAR WINDOW CLOSE RELAY SLIDING REAR WINDOW OPEN RELAY STARTER MOTOR TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE TO RIGHT INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 5 OF 7) TO UNDERHOOD FUSE BLOCK (DIAGRAM 3 OF 7) TRANSFER CASE SHIFT CONTROL SWITCH VIO/BRN WIRE W/ DUAL GENERATOR

6.0L 6.0L (VIN G) ACC IGN VOLT AUXILIARY CHASSIS CONTROL MODULE BASE EQUIPMENT EXCEPT BASE EQUIPMENT BLK WIRE BODY CONTROL MODULE CHASSIS CONTROL MODULE CHG IND CTRL DK BLU WIRE DLIS FUSE DRIVER SEAT ADJUSTER SWITCH DRIVER WINDOW MOTOR DRVR PWR SEAT FUSE ECM IGN FUSE ENGINE CONTROL MODULE ENGINE CONTROLS IGNITION RELAY EXTENDED CAB CREW CAB FROM ACCY PWR MDL/TPIM PUMP FUSE (DIAGRAM 3 OF 7) FROM LEFT INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 6 OF 7) FROM UNDERHOOD FUSE BLOCK (DIAGRAM 3 OF 7) FRONT AXLE ENGAGEMENT ACTUATOR FUEL PUMP 2 FUSE FUEL PUMP DRIVER CONTROL MODULE GARAGE DOOR OPENER GLOW PLUG CONTROL MODULE GRN WIRE GRN/VIO WIRE IGNITION MAIN RELAY IGNITION SWITCH J124 (6.0L) J123 (6.6L) KEY-IN IGNITION SWITCH LEFT INSTRUMENT PANEL FUSE BLOCK LEFT REAR WINDOW SWITCH LT DRS FUSE MISC IGN FUSE MOBILE DEVICE WIRELESS CHARGER MODULE OFF PNK WIRE PPL/LT GRN WIRE RED WIRE RED/BLU WIRE RED/DK BLU WIRE RED/YEL WIRE ROOF BEACON SWITCH RUN WIRE SEAT MEMORY CONTROL MODULE SECONDARY FUEL PUMP RELAY TO CONFIGURABLE PROVISION RELAY 4 (DIAGRAM 7 OF 7) TO PRK ENBL/ EAP FUSE (DIAGRAM 6 OF 7) TRANS IGN FUSE TRANSMISSION CONTROL MODULE UGDO/ ISRVM FUSE UNDERHOOD FUSE BLOCK VIO/BLK WIRE VIO/LT GRN WIRE VIO/WHT WIRE VIO/YEL WIRE W/ ROOF MOUNTED PROVISION W/O ROOF MOUNTED PROVISION WHT/BLK WIRE WHT/VIO WIRE

6.0L 6.0L (VIN B) 6.0L (VIN G) A/C COMPRESSOR CLUTCH RELAY A/T ABS PUMP FUSE ABS VLV FUSE AC CLTCH FUSE ACCY PWR MDL/TPIM PUMP FUSE AHA/AHA RVC (6.0L) A/C CMPRSR MDL/BATT RVC (6.6L) FUSE ALTERNATIVE FUEL FUSE HOLDER 1 ALTERNATIVE FUEL FUSE HOLDER 2 ALTERNATIVE FUEL INJECTOR RELAY ALTERNATIVE FUEL SYSTEM DATA CONNECTOR ASSIST STEP CONTROL MODULE AUXILIARY CHASSIS CONTROL MODULE BASE EQUIPMENT BLUNT CUT) BODY CONTROL MODULE CHASSIS CONTROL MODULE CNG CONTROL MODULE ELC RNG BDS FUSE ELEC PRK BRK FUSE ELECTRONIC BRAKE CONTROL MODULE ENGINE CONTROL MODULE ESC ELC EXH FUSE EVAPORATIVE EMISSION VENT SOLENOID VALVE EXCEPT BASE EQUIPMENT FPPM FUSE FROM AUXILIARY BATTERY FUSE BLOCK (DIAGRAM 1 OF 7) FROM BATTERY FUSE BLOCK (DIAGRAM 1 OF 7) FRONT FOG LAMP RELAY FRT/WPR FUSE FUEL HEATER FUSE FUEL HEATER RELAY FUEL PUMP DRIVER CONTROL MODULE FUEL PUMP FUSE FUEL PUMP RELAY FUSE HEADLAMP HIGH BEAM RELAY HORN RELAY I/P BEC 1 FUSE I/P BEC 2 FUSE ICCM FUSE INSTRUMENT PANEL JUNCTION BLOCK INT HTR FUSE LEFT TRAILER STOP/TURN SIGNAL LAMP RELAY LT GRN WIRE MSB DRVR FUSE MSB PASS FUSE REAR DEFOGGER RELAY RED WIRE RED/BRN WIRE RED/DK BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/LT GRN WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE REDUCTANT CONTROL MODULE RIGHT TRAILER STOP/TURN SIGNAL LAMP RELAY STARTER RELAY STOP LAMP RELAY STRTR FUSE SUSPENSION CONTROL MODULE TCM/ECM FUSE TO AUXILIARY BATTERY RELAY 1 (DIAGRAM 1 OF 7) TO ENGINE CONTROLS IGNITION RELAY (DIAGRAM 2 OF 7) TO LEFT INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 2 OF 7) TO LEFT INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 4 OF 7) TRAILER BACKUP LAMPS RELAY TRAILER BRAKE POWER CONTROL MODULE TRAILER BRAKE PROVISION TRAILER CAMPER PROVISION TRAILER CONNECTOR TRAILER PARK LAMPS RELAY TRANSFER CASE CONTROL MODULE TRANSMISSION CONTROL MODULE TRLR BATT FUSE TRLR BRK FUSE UNDERHOOD FUSE BLOCK W/ AUXILIARY BATTERY W/ SPECIAL EQUIPMENT W/O AUXILIARY BATTERY W/O SPECIAL EQUIPMENT WINDSHIELD WASHER PUMP RELAY WINDSHIELD WIPER RELAY WINDSHIELD WIPER SPEED CONTROL RELAY

AC INV FUSE ACCESSORY DC/AC POWER INVERTER MODULE AMP FUSE AUDIO AMPLIFIER AUDIO/ VIDEO INPUT ADAPTER AUXILIARY AUDIO INPUT BARE BASE EQUIPMENT BCM 2 FUSE BCM 4 FUSE BCM 7 FUSE BLK WIRE BLK/WHT WIRE BLOWER MOTOR BLU/BRN WIRE BODY CONTROL MODULE CUT SHIELD) DK BLU/BRN WIRE EXCEPT BASE EQUIPMENT FROM BATTERY FUSE BLOCK (DIAGRAM 1 OF 7) FROM INSTRUMENT PANEL JUNCTION BLOCK (DIAGRAM 1 OF 7) FRT BLWR FUSE HUMAN MACHINE INTERFACE CONTROL MODULE INFOTMNT FUSE INSTRUMENT PANEL JUNCTION BLOCK INVERTER CTRL LEFT STEERING WHEEL CONTROLS SWITCH LOGIC LOW REF LT GRN WIRE MEDIA DISC PLAYER NCA WIRE PARKING ASSIST CONTROL MODULE RADIO RDO FUSE RED WIRE RED/BRN WIRE RED/DK BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/LT GRN WIRE RED/VIO WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT STEERING WHEEL CONTROLS SWITCH ROOF BEACON RELAY RSE FUSE STEERING WHEEL AIR BAG COIL STR WHL CNTRL FUSE SUNROOF FUSE SUNROOF MOTOR TO RETAINED ACCESSORY POWER RELAY 2 (DIAGRAM 6 OF 7) USB RECEPTACLE USB/OBS DET FUSE VIO/BRN WIRE W/ FRONT COMPARTMENT FLOOR CUSTOM CONSOLE W/ REAR SEAT ENTERTAINMENT W/ ROOF MOUNTED PROVISIONS W/O ROOF MOUNTED PROVISIONS WINDSHIELD FRONT VIEW CAMERA YEL WIRE

ACTUATOR UNLCK CTRL AIR CONDITIONING SYSTEM AMBIENT LIGHT/ SUNLOAD SENSOR BATT POS VOLT BCM 3 FUSE BCM 5 FUSE BLK WIRE BLK/YEL WIRE BLU/VIO WIRE BLU/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN/GRN WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CHILD LOCK IND CHILD LOCK OUT IND CHILD LOCK SWITCH CHILD SECURITY LCK RELAY CTRL COMPUTER DATA LINES SYSTEM DATA DK BLU WIRE DR LCK CTRL DR LCK CTRL 2 DRIVER DOOR LATCH ASSEMBLY (REAR OF DRIVER'S DOOR) DRIVER WINDOW MOTOR DRIVER WINDOW SWITCH DRV LOCK SIG DRV UNLOCK SIG GMLAN GMLAN SERIAL DATA - 1 GRN WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/WHT WIRE HEADLIGHTS SYSTEM HOOD AJAR SW SIG HORN RELAY CTRL HORNS SYSTEM HOT AT ALL TIMES HVAC CONTROL MODULE IND DIMMING CTRL INSTRUMENT PANEL JUNCTION BLOCK KEY SW UNLCK SIG LEFT INSTRUMENT PANEL FUSE BLOCK LF DR AJAR LF DR AJAR SW SIG LH HDLP LOW BEAM CTRL LIN BUS 3 LOCK MOTOR STATUS LOCK OUT IND LOGIC LOW REF LOW SPD LT GRN/YEL WIRE MOTOR STATUS SIG LR MOTOR STATUS SIG RR MTR STATUS PASS LOCK CTRL PASS UNLOCK CTRL PASSENGER DOOR LOCK SWITCH RED/BRN WIRE RED/DK BLU WIRE RED/GRY WIRE RED/VIO WIRE RF DR AJAR SW SIG RFA CTRL RFA RECEIVE SIG RFA RETURN RFA TRANSMIT SIG RH HDLP LOW BEAM CTRL SECURITY IND CTRL SECURITY LCK SW SIG SERIAL SW SIG UNLOCK SIG VIO/YEL WIRE W/ POWER OPERATED WINDOW W/O POWER OPERATED WINDOW WHT WIRE WHT/VIO WIRE YEL WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/VIO WIRE

AJAR SW SIG BCM 4 FUSE BCM 8 FUSE BLK WIRE BLU/WHT WIRE BRN WIRE BRN/GRN WIRE BRN/WHT WIRE BRN/YEL WIRE CHILD SECURITY LOCK DISABLE RELAY COMPUTER DATA LINES SYSTEM DOOR DEAD LOCK RELAY DRIVER DOOR LOCK SWITCH GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/WHT WIRE HOT AT ALL TIMES INSTRUMENT PANEL JUNCTION BLOCK LIN BUS 3 LIN BUS 4 LOGIC LT GRN/GRY WIRE LT GRN/YEL WIRE PASSENGER DOOR LATCH ASSEMBLY PASSENGER WINDOW SWITCH RED/DK BLU WIRE RED/VIO WIRE RF DR RIGHT REAR DOOR LATCH ASSEMBLY (CREW CAB, DOUBLE CAB) (REAR OF RIGHT REAR DOOR) RIGHT REAR WINDOW SWITCH RR DR - VIO/YEL WIRE WHT WIRE WHT/BLU WIRE YEL WIRE YEL/GRN WIRE

AJAR SW SIG BLK WIRE BLU/VIO WIRE COMPUTER DATA LINES SYSTEM DK BLU/GRY WIRE DK BLU/VIO WIRE DOOR LOCKS SYSTEM DOWN DOWN SIG DRIVER WINDOW MOTOR DRIVER WINDOW SWITCH EXPRESS EXPRESS SIG GRY WIRE GRY/WHT WIRE HOT AT ALL TIMES ILL LEFT FRONT LEFT INSTRUMENT PANEL FUSE BLOCK LEFT REAR LEFT REAR WINDOW MOTOR LEFT REAR WINDOW SWITCH (EXTENDED CAB, CREW CAB) LK MTR STS LK SW SIG LOCKOUT IND LOGIC LR DOWN CTRL LR DR AJAR SW SIG LR UP CTRL LT DRS FUSE LT GRN/BLK WIRE LT GRN/GRY WIRE LT GRN/VIO WIRE LT GRN/WHT WIRE LT GRN/YEL WIRE MIR WNDW MDL FUSE NETWORK 3 NETWORK 4 OUTER SIDE REAR VIEW MIRROR SWITCH PASSENGER WINDOW MOTOR PASSENGER WINDOW SWITCH RED/DK BLU WIRE RED/VIO WIRE RED/WHT WIRE RIGHT FRONT RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT REAR RIGHT REAR WINDOW MOTOR RIGHT REAR WINDOW SWITCH (EXTENDED CAB, CREW CAB) RR DOWN CTRL RR DR AJAR SW SIG RR UP CTRL RT DR WNDW MTR FUSE UNLCK SIG UP SIG W/ MEMORY W/ POWER MIRROR W/O MEMORY WHT WIRE WHT/VIO WIRE WINDOW LOCK SWITCH WINDOW SWITCH YEL/BRN WIRE YEL/DK BLU WIRE