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

BATTERY FUSE BLOCK BLK WIRE BLU/BRN WIRE BRN WIRE BRN/VIO WIRE DISTRIBUTION FOG LAMP FUSE FRONT FOG LAMP RELAY FUSE 2 GROUND DISTRIBUTION SYSTEM GRY/BLU WIRE HDLP RT/LT FUSE HEADLAMP HIGH BEAM RELAY HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED LEFT HEADLAMP LEFT HEADLAMP ASSEMBLY LEFT HEADLAMP MULTI-FUNCTION LED CONTROL MODULE LEFT HIGH BEAM SOLENOID ACTUATOR LEFT LOW BEAM HEADLAMP LEFT PARK DAYTIME RUNNING LAMP LOGIC MISC IGN FUSE NCA WIRE POWER RED/GRN WIRE SYSTEM UNDERHOOD FUSE BLOCK VIO/GRY WIRE W/ HIGH INTENSITY DISCHARGE W/O HIGH INTENSITY DISCHARGE W/O HIGH INTENSITY DISCHARGE W/ HIGH INTENSITY DISCHARGE CHEVROLET GMC WHT WIRE YEL WIRE YEL YEL WIRE

B+ VOLT BLK WIRE BLK/WHT WIRE BLU/BRN WIRE BRN/VIO WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY FRONT FOG LIGHT IND GROUND DISTRIBUTION SYSTEM HIGH BEAM IND HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT PANEL JUNCTION BLOCK IPC FUSE LEFT INSTRUMENT PANEL FUSE BLOCK LOGIC LOW SPD GMLAN SER DATA LT GRN WIRE NCA WIRE RED/GRY WIRE RIGHT HEADLAMP RIGHT HEADLAMP ASSEMBLY RIGHT HEADLAMP MULTI-FUNCTION LED CONTROL MODULE RIGHT HIGH BEAM SOLENOID ACTUATOR RIGHT LOW BEAM HEADLAMP RIGHT PARK DAYTIME RUNNING LAMP SIG GND VIO/GRY WIRE W/ HIGH INTENSITY DISCHARGE W/O DRIVER INFO ENHANCED DISPLAY INSTRUMENT W/O HIGH INTENSITY DISCHARGE WHT WIRE YEL WIRE

BLK WIRE BRN/VIO WIRE GROUND DISTRIBUTION SYSTEM LEFT FRONT FOG LAMP LEFT HEADLAMP LEFT HEADLAMP ASSEMBLY LEFT HEADLAMP HIGH BEAM CONTROL MODULE LEFT HEADLAMP MULTI-FUNCTION LED CONTROL MODULE LEFT HIGH BEAM SOLENOID ACTUATOR LEFT LOW BEAM HEADLAMP LOGIC NCA WIRE W/ HIGH INTENSITY DISCHARGE W/O HIGH INTENSITY DISCHARGE W/O HIGH INTENSITY DISCHARGE W/ HIGH INTENSITY DISCHARGE WHT WIRE YEL WIRE

BLK WIRE BRN/VIO WIRE GROUND DISTRIBUTION SYSTEM LOGIC NCA WIRE RIGHT FRONT FOG LAMP RIGHT HEADLAMP RIGHT HEADLAMP ASSEMBLY RIGHT HEADLAMP HIGH BEAM CONTROL MODULE RIGHT HEADLAMP MULTI-FUNCTION LED CONTROL MODULE RIGHT HIGH BEAM SOLENOID ACTUATOR RIGHT LOW BEAM HEADLAMP W/ HIGH INTENSITY DISCHARGE W/O HIGH INTENSITY DISCHARGE W/O HIGH INTENSITY DISCHARGE W/ HIGH INTENSITY DISCHARGE WHT WIRE YEL WIRE

4.3L, 6.2L, 5.3L 6.6L 3 6.0L 4 5 6 7 8 9 AJAR SW SIG AMBIENT AIR TEMPERATURE SENSOR AMBT AIR TEMP SENS LOW REF AMBT AIR TEMP SENS SIG BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/LT GRN WIRE BLK/VIO 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/LT GRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/GRY WIRE DOWN DRIVER DOOR LATCH ASSEMBLY ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) ENGINE CONTROLS SYSTEM ENGINE OIL LEVEL SWITCH ENGINE OIL PRESSURE SENSOR FUEL LEVEL SENS LOW REF FUEL LEVEL SENSOR FUEL PUMP, LEVEL SENSOR ASSEMBLY GMLAN SERIAL DATA GRN/BLK WIRE GRY WIRE GRY/WHT WIRE HI SPD GMLAN SERIAL DATA INSTRUMENT PANEL JUNCTION BLOCK LEFT LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR WINDOW SWITCH LF DR AJAR LF DR AJAR SW SIG LIN BUS 12 LIN BUS 3 LIN BUS 4 LOGIC LOGIC DRIVER WINDOW MOTOR LOGIC RIGHT REAR WINDOW SWITCH LOW REF BANK 2 LR DR LT GRN/GRY WIRE LT GRN/YEL WIRE MIRROR AMBIENT AIR TEMPERATURE SENSOR NCA WIRE OIL LEVEL SW SIG OIL PRESSURE SENS 5 VOLT REF OIL PRESSURE SENS SIG OUTSIDE AMBT AIR SENS SIG OUTSIDE AMBT AIR TEMP SENS LOW REF PASSENGER DOOR LATCH ASSEMBLY PASSENGER OUTSIDE REAR VIEW MIRROR PASSENGER WINDOW SWITCH PRIMARY FUEL LEVEL SENS SIG PRIMARY FUEL LEVEL SENSOR PRIMARY FUEL PUMP, LEVEL SENSOR ASSEMBLY PRK BRK SW RF DR RF DR AJAR SW SIG RIGHT RIGHT REAR DOOR LATCH ASSEMBLY (CREW CAB, DOUBLE CAB) RIGHT STEERING WHEEL CONTROLS SWITCH RR DR - SECONDARY FUEL LEVEL SENS SIG SECONDARY FUEL LEVEL SENSOR SECONDARY FUEL PUMP, LEVEL SENSOR ASSEMBLY SELECT SW SIG WHT WIRE WHT/RED WIRE YEL/BRN WIRE

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

ACCY/RUN CRNK FUSE APO 1/LTR FUSE APO 2 FUSE APO 3 FUSE APO 4 FUSE APO/BATT FUSE APO/RAP FUSE BLK WIRE BODY CONTROL MODULE CENTER CONSOLE COMPARTMENT ACCESSORY POWER RECEPTACLE CENTER CONSOLE REAR ACCESSORY POWER RECEPTACLE CENTER SEAT ACCESSORY POWER RECEPTACLE COLLISION ALERT INDICATORS ELECTRICAL AUXILIARY HEATER FORWARD ADJUSTABLE PEDAL RELAY FROM LT DRS FUSE (DIAGRAM 2 OF 7) FROM USB/OBS DET FUSE (DIAGRAM 5 OF 7) GRN/VIO WIRE GRY WIRE GRY/VIO WIRE HTD WHL FUSE HVAC CONTROL MODULE HVAC/AUX HVAC IGN FUSE IGNITION MAIN RELAY INSIDE REAR VIEW MIRROR INSTRUMENT CLUSTER INSTRUMENT PANEL 1 ACCESSORY POWER RECEPTACLE INSTRUMENT PANEL 2 ACCESSORY POWER RECEPTACLE INSTRUMENT PANEL ACCESSORY POWER RECEPTACLE INSTRUMENT PANEL JUNCTION BLOCK INSTRUMENT PANEL MULTI- FUNCTION SWITCH IPC IGN/SDM IGN FUSE LEFT INSTRUMENT PANEL FUSE BLOCK NCA WIRE PASSENGER AIR BAG DISABLED INDICATOR PRK ENBL/ EAP FUSE REAR VIEW CAMERA REARWARD ADJUSTABLE PEDAL RELAY RED WIRE RED/BRN WIRE RED/WHT WIRE RETAINED ACCESSORY POWER RELAY 1 RETAINED ACCESSORY POWER RELAY 2 RIGHT INSTRUMENT PANEL FUSE BLOCK SEO ALC FUSE SEO RAP FUSE SLIDING REAR WINDOW SWITCH SPARE FUSE STEERING WHEEL AIR BAG COIL STEERING WHEEL HEATING CONTROL MODULE SUNROOF MOTOR TO MOBILE DEVICE WIRELESS CHARGER MODULE (DIAGRAM 2 OF 7) TO UNDERHOOD FUSE BLOCK (DIAGRAM 2 OF 7) TRANSFER CASE CONTROL MODULE TRANSMISSION PARK POSITION RELAY UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLK WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/LT GRN WIRE VIO/WHT WIRE VIO/YEL WIRE W/O FRONT COMPARTMENT CONSOLE YEL 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

AUX AUDIO COMM SIG AUX AUDIO SCREEN (2) AUX DETECTION SIG AUXILIARY AUDIO INPUT BASE EQUIPMENT EXCEPT BASE EQUIPMENT BATT POSITIVE VOLT BK AM/FM ANT SIG BLK WIRE BLK/YEL WIRE BLU WIRE COAX COMPUTER DATA LINES SYSTEM CU XM/HD DISTRIBUTION GMLAN SERIAL DATA GRN WIRE GROUND GRY WIRE GRY/GRN WIRE GRY/VIO WIRE HOT AT ALL TIMES IPC FUSE LEFT INSTRUMENT PANEL FUSE BLOCK LH AUX AUDIO SIG (2) LOGIC LOW REF LT BLU WIRE LT GRN WIRE LT GRN/DK BLU WIRE MEDIA DISC PLAYER MOST CONTROL MOST SERIAL DATA (+) NCA WIRE NETWORK BUS 10 POSITIVE VOLTAGE RADIO RADIO ANTENNA RDO FUSE RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE RH AUX AUDIO SIG (2) RIGHT INSTRUMENT PANEL FUSE BLOCK SERIAL DATA STEERING WHEEL AIR BAG COIL STR WHL CNTRL FUSE SYSTEM TELEPHONE VOICE SIG USB USB/OBS DET FUSE VIO WIRE W/ FRONT COMPARTMENT FLOOR CUSTOM CONSOLE W/ REAR SEAT ENTERTAINMENT W/O REAR SEAT ENTERTAINMENT WHT/LT GRN WIRE WHT/VIO WIRE YEL WIRE

AUDIO AMPLIFIER (UNDER REAR OF CENTER CONSOLE) BATT POS VOLT BLK WIRE BLU WIRE BLU/BLK WIRE BLU/GRY WIRE BRN/BLU WIRE BRN/GRN WIRE COMPUTER DATA LINES SYSTEM DK BLU/BLK WIRE DK BLU/YEL WIRE ENGINE CONTROLS SYSTEM GMLAN SERIAL DATA GRN WIRE GRN/BLK WIRE GROUND GRY/BLK WIRE GRY/BRN WIRE GRY/DK BLU WIRE GRY/GRN WIRE GRY/VIO WIRE LEFT FRONT DOOR SPEAKER LEFT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE LEFT INSTRUMENT PANEL SPEAKER LEFT REAR DOOR SPEAKER LF SPKR LF SPKR 1 (-) LR SPKR LT GRN WIRE LT GRN/BLK WIRE LT GRN/BRN WIRE MICROPHONE 1 LOW REF MICROPHONE 1 SIG MICROPHONE 2 LOW REF MICROPHONE 2 SIG MICROPHONE 3 SIG MOST CONTROL NCA WIRE REAR RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RED/YEL WIRE REPLICATED SIG RF SPEAKER (+) LH/RR SUBWOOFER SPKR (+) MICROPHONE 3 LOW REF RF SPEAKER (-) RH SUBWOOFER SPKR (-) RF SPKR RF SPKR 1 (-) RIGHT FRONT DOOR SPEAKER RIGHT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RIGHT INSTRUMENT PANEL SPEAKER RIGHT REAR DOOR SPEAKER RR SPKR SERIAL DATA SUBWOOFER SPEAKER VIO/BRN WIRE VIO/DK BLU WIRE W/ PREMIUM WHT WIRE WHT/LT GRN WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/GRY WIRE