GMC Sierra III (2013-2015) nca Wiring diagrams

1 3 2 6 12-VOLT REF LO SERIAL DATA HI SERIAL DATA GROUND 12 13 12-VOLT REF BRAKE SW SIG PARK BRAKE SW SIG PPL 12-VOLT REF ANGLE SENSOR PHASE B CAN BUS LOW SERIAL DATA 12-VOLT REF LF WHEEL SPD SENS SIG 16 17 DATA BUS+ DATA BUS- 2500 2501 COMPUTER DATA LINES SYSTEM 2501 2501 COMPUTER DATA LINES SYSTEM 5-VOLT REF VEHICLE SPEED SIGNAL CAN BUS HIGH SERIAL DATA ABS INDICATOR ABS-1 FUSE 61 (GAS) FUSE 56 (DIESEL) BLK WIRE BLK/ WHT WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER RESERVOIR) BRAKE PRESSURE MODULATOR VALVE BRAKE WARNING INDICATOR BRN WIRE COMPUTER DATA LINES SYSTEM DIESEL DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER DISPLAY ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF FRAME ASSEMBLY) EXCEPT LUXURY GAS GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES I/P MULTI-FUNCTION SWITCH INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 43 (DIESEL) FUSE 46 (GAS) LEFT FRONT WHEEL SPEED SENSOR (WSS) (ON LEFT FRONT STEERING KNUCKLE) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT REAR WHEEL SPEED SENSOR (WSS) (ON LEFT REAR BRAKE BACKING PLATE) LOGIC LOW REF 12-VOLT REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LUXURY NCA WIRE ORG/BLK WIRE ORG/WHT WIRE PEDAL ASSEMBLY) POWER DISTRIBUTION SYSTEM PPL PPL PPL RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT FRONT WHEEL SPEED SENSOR (WSS) (ON RIGHT FRONT STEERING KNUCKLE) RIGHT REAR WHEEL SPEED SENSOR (WSS) (ON RIGHT REAR BRAKE BACKING PLATE) SERIAL DATA SERIAL DATA BATTERY POSITIVE VOLTAGE SERIAL DATA BUS (+) SERIAL DATA BUS (+) BATTERY POSITIVE VOLTAGE SERIAL DATA BUS- SERIAL DATA BUS- GROUND SIG STEERING ANGLE SENSOR (ON STEERING COLUMN) STOP LAMP SWITCH (TOP OF BRAKE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRACTION CONTROL INDICATOR TRACTION CONTROL SWITCH TRACTION CTRL SW SIG VEHICLE SPD SIG RADIO WHT WIRE YAW RATE, LATERAL ACCELERATION SENSOR (UNDER CENTER CONSOLE TRIM PANEL) YEL WIRE YEL/BLK WIRE

A/T MANUAL SHIFT SWITCH AUTOMATIC TRANSMISSION ASSEMBLY BLK WIRE BLK/WHT WIRE BLU/GRY WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM DK BLU WIRE FROM AUTOMATIC TRANSMISSION ASSEMBLY (DIAGRAM 1 OF 2) FTP SWITCH 1 VOLTAGE FTP SWITCH 3 VOLTAGE FTP SWITCH 4 VOLTAGE FTP SWITCH 5 VOLTAGE GMLAN GMLAN GMLAN SERIAL SERIAL GMLAN SERIAL SERIAL DATA DATA DATA DATA BUS - BUS + BUS + BUS - GRN WIRE GRY WIRE INPUT SPEED SENSOR (ISS) SIGNAL ISS/OSS SUPPLY VOLTAGE NCA WIRE OUTPUT SPEED SENSOR (OSS) SIGNAL PPL/YEL WIRE RED WIRE REF SENSOR TOW/ HAUL MODE SWITCH TOW/ HAUL SW SIG TRANSMISSION CONTROL MODULE (TCM) CONTROL SOLENOID VALVE ASSEMBLY TRANSMISSION FLUID PRESSURE (TFP) SWITCH TRANSMISSION INPUT SHAFT SPEED (ISS) TRANSMISSION INTERNAL MODE SWITCH (IMS) TRANSMISSION OUTPUT SHAFT SPEED (ISS) TRANSMISSION RANGE SWITCH SIG A TRANSMISSION RANGE SWITCH SIG B TRANSMISSION RANGE SWITCH SIG C TRANSMISSION RANGE SWITCH SIG P TRANSMISSION SHIFT LEVER WHT WIRE YEL WIRE

AUDIO SIG + BATT POS VOLT BLK WIRE BLK/BLU WIRE BLK/BRN (OR BLK/GRY) WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE CAMERA SIGNAL 1 - CELL COAX COMMUNICATION ENABLE COMPUTER COMPUTER DATA LINES DATA LINES SYSTEM SYSTEM COMPUTER DATA LINES SYSTEM DIGITAL RADIO ANTENNA DK BLU (OR GRY/YEL) WIRE DK BLU WIRE DRAIN WIRE GMLAN SERIAL DATA - 1 GPS GPS/CELL GRY/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES LEFT INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT AMP FUSE HUMAN INTERFACE CONTROL MODULE (BEHIND GLOVE BOX) LOW REF LT GRN/WHT WIRE MICROPHONE SIG MICROPHONE/AUDIO MOST CONTROL MOST SERIAL DATA (+) NAVIGATION ANTENNA SIGNAL SPLITTER NAVIGATION DISPLAY SIG NAVIGATION SYSTEM NCA WIRE NETWORK BUS 5 RED WIRE RED/VIO WIRE RED/YEL WIRE SER DATA SIDE OF DASH) TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE USB USB 3 4 5 USB RECEPTACLE USB SRL DATA LOW REF VOICE SIG VT-1 VT-2 W/ ONSTAR W/ SPLITTER W/O SPLITTER W/O ONSTAR WHT WIRE WHT/DK BLU WIRE WHT/GRN WIRE WHT/VIO WIRE YEL WIRE

2 1 RF SPKR (+) (1) SPEAKER + 6 5 4 3 RF SPKR (-) (1) SPEAKER - BATT POS VOLT LF SPKR (+) (1) 8 7 GROUND LF SPKR (-) (1) AUDIO AMPLIFIER (UNDER REAR OF CENTER CONSOLE) BLK WIRE BLK/ YEL WIRE BLU (OR DK BLU) WIRE BLU WIRE BLU/ YEL WIRE BRN/BLU (OR BRN/DK BLU) WIRE BRN/BLU WIRE BRN/DK BLU (OR YEL/GRY) WIRE BRN/GRN WIRE COMPUTER DATA LINES SYSTEM DK BLU (OR YEL/BLU) WIRE DK BLU BRN/ WIRE DK BLU WIRE DK BLU/BLK WIRE DK BLU/GRY WIRE DK BLU/YEL WIRE ENGINE CONTROLS SYSTEM COMPUTER DATA LINES SYSTEM GRY YEL/ WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/DK BLU WIRE GRY/VIO WIRE LEFT FRONT DOOR SPEAKER LEFT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE LEFT INSTRUMENT PANEL SPEAKER LR SPK (+) RR SPK (+) LF SPK (+) RF SPK (+) LT GRN WIRE LT GRN/BLK WIRE LT GRN/BRN WIRE MICROPHONE 3 SIG MICROPHONE 2 SIG MICROPHONE 1 SIG MOST CONTROL NCA WIRE REAR RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RED/YEL WIRE REPLICATED SIG GMLAN SERIAL DATA RIGHT FRONT DOOR SPEAKER RIGHT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RIGHT INSTRUMENT PANEL SPEAKER RIGHT REAR DOOR SPEAKER SERIAL DATA - SERIAL DATA + SERIAL DATA + SERIAL DATA - SUBWOOFER DOOR SPEAKER VIO/BRN WIRE VIO/DK BLU WIRE W/ PREMIUM SURROUND AMPLIFIER W/O PREMIUM SURROUND AMPLIFIER WHT WIRE WHT/GRN WIRE WHT/VIO WIRE YEL (OR BRN/GRN) WIRE YEL WIRE YEL/BLK (OR VIO/BRN) WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/GRY WIRE

659 658 LOW REF TELEPHONE VOICE SIG 7532 5060 NETWORK BUS 10 GMLAN SERIAL DATA AUXILIARY AUDIO INPUT BK AM/FM ANT SIG BLK WIRE BLK/YEL WIRE COAX COMPUTER DATA LINES SYSTEM DK BLU WIRE DRAIN WIRE GRY WIRE GRY/VIO WIRE HOT AT ALL TIMES LOGIC LOW REF LT GRN WIRE LT GRN/DK BLU WIRE MEDIA DISC PLAYER (IF EQUIPPED) MOST CONTROL NCA WIRE POSITIVE VOLTAGE RADIO RADIO ANTENNA RDO FUSE RED/VIO WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK (IN RIGHT END OF DASH) SERIAL DATA SIGNAL GROUND TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE USB USB/OBS DET FUSE VIO WIRE VOICE SIG WHT WIRE WHT/GRN WIRE WHT/VIO WIRE YEL WIRE

BAT POS VOLT BATT POS VOLT BLK WIRE BLU WIRE BUS 12 COMPUTER DATA LINES SYSTEM GMLAN SERIAL DATA GRN WIRE GRN/BRN WIRE GROUND HOT AT ALL TIMES INFO DISPLAY MODULE RADIO/HVAC DISPLAY CONTROLS INSTRUMENT PANEL JUNCTION BLOCK LEFT STEERING WHEEL CONTROLS SWITCH LOGIC LT GRN WIRE LT GRN/DK BLU WIRE LT GRN/WHT WIRE MUTE VOICE NCA WIRE NETWORK NETWORK BUS 10 NETWORK BUS 9 RADIO PRESETS STEERING WHEEL CONTROLS SWITCH RADIO VOLUME STEERING WHEEL CONTROLS SWITCH RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK (IN RIGHT END OF DASH) RIGHT STEERING WHEEL CONTROLS SWITCH SOURCE UP DOWN STEERING WHEEL AIR BAG COIL STR WHL CNTRL FUSE VOL (-) WHT/YEL WIRE YEL/BLU WIRE

1 1 RF HEAD CURTAIN MOD HI CTRL RF HEAD CURTAIN MOD LO CTRL BLK/ORG WIRE BLU WIRE BRN WIRE BRN/ORG WIRE DK GRN WIRE DRIVER SEAT BELT ANCHOR PRETENSIONER DRIVER SEAT BELT RETRACTOR PRETENSIONER DRIVER SEAT BELT SWITCH DRIVER SEAT BELT BUCKLE DRIVER SEAT POSITION SENSOR DRIVER SEAT SIDE AIR BAG GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRY WIRE GRY/ORG WIRE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (UNDER DRIVER'S SEAT) LT BLU WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/BLU WIRE ORG/BRN WIRE ORG/GRN WIRE ORG/GRY WIRE ORG/LT GRN WIRE ORG/VIO WIRE ORG/YEL WIRE PASSENGER SEAT BELT ANCHOR PRETENSIONER PASSENGER SEAT BELT RETRACTOR PRETENSIONER PASSENGER SEAT BELT SWITCH PASSENGER SEAT BELT BUCKLE PASSENGER SEAT POSITION SENSOR PASSENGER SEAT SIDE AIR BAG RED WIRE RIGHT ROOF RAIL AIR BAG SHORTING BAR VIO/ORG WIRE WHT WIRE WHT/ORG WIRE YEL/ORG WIRE

1 2 3 4 5 6 7 8 9 10 11 12 BATT POSITIVE VOLT BATT POSITIVE VOLT BK USB BLK WIRE BLU/VIO WIRE BRN WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM ENABLE SIG ENTERTAINMENT REMOTE GRN/WHT WIRE GRY/VIO WIRE HOT AT ALL TIMES HUMAN MACHINE INTERFACE CONTROL MODULE INFO DISPLAY MODULE INSTRUMENT PANEL JUNCTION BLOCK LT GRN WIRE LT GRN/YEL WIRE LVDS MEDIA DISC PLAYER MOST CONTROL LOW SPEED GMLAN SERIAL DATA NCA WIRE RED/LT GRN WIRE RED/VIO WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK (IN RIGHT END OF DASH) RSE FUSE SIG GND USB WHT WIRE WHT/GRN WIRE WHT/VIO WIRE YEL WIRE

AUDIO/VIDEO INPUT ADAPTER AUXILIARY AUDIO AUXILIARY VIDEO HI SIG AUXILIARY VIDEO LO SIG BATT POSITIVE VOLT BLK WIRE BLU/VIO WIRE BRN WIRE BRN/GRY WIRE COMMON SIG GRN/WHT WIRE HEADPHONE HOT AT ALL TIMES INSTRUMENT PANEL JUNCTION BLOCK LEFT AUXILIARY AUDIO SIG 1 LOGIC LR SEAT AUDIO HEADPHONE SIG NCA WIRE RDO FUSE REAR SEAT AUDIO RED/VIO WIRE RIGHT AUXILIARY AUDIO SIG 1 RIGHT INSTRUMENT PANEL FUSE BLOCK (IN RIGHT END OF DASH) RR SEAT AUDIO HEADPHONE SIG USB WHT WIRE YEL WIRE

18 20 GMLAN SER DATA (+) GMLAN SER DATA (-) BCM 3 FUSE BLK WIRE BLK/ORG WIRE BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER RESERVOIR) BRAKE IND BREAKOUT) BRK FLUID LVL COMPUTER DATA LINES SYSTEM DISPLAY DK BLU WIRE DK BLU/YEL WIRE DLIS FUSE DRIVER SEAT BELT SWITCH DRIVER SEAT BELT BUCKLE DRIVER SEAT POSITION SENSOR ELECTRONIC BRAKE CONTROL MODULE (ON LEFT SIDE OF FRAME ASSEMBLY) HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IGNITION SWITCH INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (UNDER DRIVER'S SEAT) INSTRUMENT CLUSTER INSTRUMENT PANEL JUNCTION BLOCK IPC IGN/SDM IGN FUSE KEY-IN IGNITION SWITCH LEFT INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT LO SPD GMLAN SERIAL DATA LOGIC LOW TIRE PRESSURE IND LT GRN WIRE LT GRN/GRY WIRE NCA WIRE OFF ORG/BLU WIRE ORG/BRN WIRE ORG/GRN WIRE ORG/VIO WIRE PASS SEAT BELT IND PASSENGER AIR BAG DISABLE INDICATOR PASSENGER SEAT BELT SWITCH PASSENGER SEAT BELT BUCKLE PASSENGER SEAT POSITION SENSOR RED/BLU WIRE RED/GRY WIRE RUN WIRE RUN/CRANK SEAT BELT IND SEAT BELT ON IND SIDE OF DASH) VIO/BLK WIRE VIO/WHT WIRE WHT WIRE WHT/VIO WIRE