GMC Sierra III (2013-2015) nca Wiring diagrams

14 13 15 LOW REF STP CP SW SIG 5 VOLT REF 2501 2500 1164 1161 1271 COMPUTER DATA LINES SYSTEM 38 5 15 LOW REF BRK APPLY SENS SPLY SUPPLY VOLT 46 66 42 61 55 SER DATA BUS- SER DATA BUS+ 56 57 MOTOR CTRL 2 MOTOR CTRL-1 ACCELERATOR PEDAL POSITION (APP) SENSOR (ABOVE ACCELERATOR PEDAL) APP SEN 1 SIG LOW REF APP SEN 2 SIG LOW REF PPL BATT + BLK WIRE BLK/WHT WIRE BRAKE PEDAL POSITION (BPP) SENSOR BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL IND DIMMING SIG CRUISE CONTROL SWITCH SIGNAL CRUISE IND CRUISE SWITCH DK BLU WIRE DK GRN WIRE ECM BATT FUSE 11 ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) GMLAN DATA BUS- GRN/WHT WIRE GROUND GROUND DISTRIBUTION SYSTEM GRY WIRE HI SPD GMLAN SER DATA BUS- HOT AT ALL TIMES HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH) DIM FUSE 7 INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (BEHIND STEERING WHEEL) INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 43 LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT STEERING WHEEL CONTROL SWITCH ASSEMBLY LOGIC LOW REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL PPL/WHT WIRE RED/WHT WIRE RES+ SER DATA SET- SOUND SYSTEMS TAN WIRE TAN/BLK WIRE TP SENS SIG TRANSMISSION CONTROL MODULE (TCM) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) (REAR OF TRANSMISSION) VSS HI SIG VSS LO SIG W/ TWO SPEED PUSH BUTTON, ELECTRIC SHIFT CONTROL TRANSFER CASE W/O TWO SPEED PUSH BUTTON, ELECTRIC SHIFT CONTROL TRANSFER CASE WHT WIRE WHT/BLK WIRE YEL WIRE

12 VOLT REF 12-VOLT REF RF WHEEL SPD SENS SIG GROUND ABS INDICATOR ABS-1 FUSE 61 (GAS) FUSE 56 (DIESEL) BLK 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 COMPUTER DATA LINES SYSTEM DATA BUS - DIESEL DIESEL GAS DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER DISPLAY ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF FRAME ASSEMBLY) ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) EXCEPT LUXURY GAS GRY WIRE GRY/WHT WIRE HEAVY DUTY ABS FUSE 59 (GAS) FUSE 55 (DIESEL) HOT AT ALL TIMES HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) 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) LOGIC LT BLU WIRE LUXURY NCA WIRE NEAR FAN SHROUD) ORG/ WIRE ORG/WHT WIRE PARK BRAKE SW SIG POWER DISTRIBUTION SYSTEM PPL PPL BRAKE SW SIG RED/BLK WIRE RED/WHT WIRE RIGHT FRONT WHEEL SPEED SENSOR (WSS) (ON RIGHT FRONT STEERING KNUCKLE) SERIAL DATA SIG TAN WIRE TAN/BLK WIRE TRACTION CONTROL INDICATOR VEHICLE SPD SIG VEHICLE SPD SIG RADIO YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 B+ 5-VOLT REF 12-VOLT REF 12-VOLT REF LR SIG WHEEL SPD SENS 16 17 DATA BUS+ DATA BUS- 2 4 3 1 SERIAL DATA 12-VOLT SERIAL DATA LOW REF 21 22 23 24 25 26 27 12-VOLT REF LF WHEEL SPD SENS SIG 2500 2500 COMPUTER DATA LINES SYSTEM 2500 2501 COMPUTER DATA LINES SYSTEM 35 36 37 38 SERIAL DATA 4.3L 6032 (OR 817) ABS INDICATOR ABS-1 FUSE 61 ABS-2 FUSE 9 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 CAN BUS HIGH SERIAL DATA GROUND COMPUTER DATA LINES SYSTEM DATA SERIAL DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER DISPLAT 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 HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) I/P MULTI-FUNCTION SWITCH (W/ ACTIVE BRAKE CONTROL) INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 46 (GAS) FUSE 43 (DIESEL) 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) LF WHEEL SPD SENS SIG LOGIC LOW REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LUXURY NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PARK BRAKE SWITCH (ON PARK BRAKE PEDAL ASSEMBLY) PARK BRK SW POWER DISTRIBUTION SYSTEM PPL RADIO RED WIRE RED/BLK WIRE RED/WHT WIRE RF SIG WHEEL SPD SENS RIGHT FRONT WHEEL SPEED SENSOR (WSS) (ON RIGHT FRONT STEERING KNUCKLE) SENSOR PHASE A 5-VOLT REF BOOSTER VACUUM SENS SIG SERIES) SIG STEERING ANGLE SENS SIG STEERING ANGLE SENSOR STOP LAMP SWITCH (TOP OF BRAKE PEDAL ASSEMBLY) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRACTION CONTROL INDICATOR TRACTION CONTROL SWITCH TRACTION CTRL SW SIG 12 13 12-VOLT REF PPL BRAKE SW SIG VEH SPD SIGNAL VEHICLE SPD SIG VEHICLE SPD SIG LOW REF GROUND SERIAL DATA BUS- SERIAL DATA BUS- W/ ACTIVE BRAKE CONTROL W/O ACTIVE BRAKE CONTROL WHT WIRE WHT/ BLK WIRE YAW RATE, LATERAL ACCELERATION SENSOR (W/ ACTIVE BRAKE CONTROL) YEL WIRE YEL/BLK WIRE

1 2 3 4 1140 5060 B+ GMLAN 1 3 4 B+ SNS SIG SNS SIG 14 15 RR AJAR SW LR AJAR SW 18 24 23 HORN RLY PRL LP RLY HDLP RLY 1851 5060 COMPUTER DATA LINES SYSTEM 23 8 20 INTRUS SIG RF DR AJR SW DR KEY SW 28 45 HORNS SYSTEM EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM 3 10 B+ GMLAN 4 6 B+ GND ACC V B+ SNS SIG SNS SIG B+ VOLT GND GMLAN BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE COAX ANT COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM GMLAN DDM FUSE 4 DIM FUSE 7 BCM FUSE 15 DISTRIBUTION SYSTEM POWER DK BLU WIRE DK GRN WIRE DLIS FUSE 35 FUSE 32 DOOR AJAR INDICATOR DRIVER DOOR LOCK SWITCH DRIVER DOOR LOCK/ WINDOW SWITCH DSM FUSE 25 EXCEPT 6.6L 6.6L FUSE 52 FUSE 49 GMLAN GROUND (ON RIGHT FRONT CORNER OF HVAC MODULE) DISTRIBUTION SYSTEM GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BLK WIRE HOOD AJAR SWITCH HOT AT ALL TIMES HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH) IGNITION SWITCH INSTRUMENT PANEL CLUSTER (IPC) INTERIOR LIGHTS SYSTEM COMPUTER DATA LINES SYSTEM INTERIOR LIGHTS SYSTEM RF AJAR SW KEYLESS ENTRY ANTENNA LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LF AJAR SW LOCK LOGIC LOGIC 4 6 B+ GND LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE OFF PASSENGER DOOR LOCK/ WINDOW SWITCH PDM FUSE 9 (W/ COMFORT, DECOR LEVEL 3 CONVENIENCE PACKAGE) PNK/BLK WIRE PNK/WHT WIRE POWER DISTRIBUTION SYSTEM PPL PPL INTRUS SIG PPL SW SIG RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (TOP REAR OF PASSENGER COMPT) RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) RUN WIRE SEC IND SECURITY IND DRIVER INFORMATION CENTER (DIC) DISPLAY SECURITY INDICATOR LAMP SW SIG TAN WIRE TAN/WHT WIRE THEFT DETERRENT CONTROL MODULE (ON RIGHT SIDE OF STEERING COLUMN) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNLOCK VEHICLE INCLINATION SENSOR VEHICLE SHOCK SENSOR W/ ACTIVE BRAKE CONTROL W/ FRONT INDIVIDUAL SEAT, POWER MIRROR W/ FRONT SEAT, POWER MIRROR W/ INDIVIDUAL FRONT SEAT, POWER MIRROR W/ REMOTE KEYLESS ENTRY, PTO YEL WIRE

BLK WIRE DRIVER OUTSIDE REARVIEW MIRROR EXCEPT 6.6L 6.6L HOT AT ALL TIMES HTD MIR FUSE 53 FUSE 51 LOGIC HVAC CONTROL MODULE MANUAL A/C AUTOMATIC A/C NCA WIRE ORG/ WIRE PASSENGER OUTSIDE REARVIEW MIRROR POWER DISTRIBUTION SYSTEM REAR DEFOG RELAY REAR DEFOG RLY CTRL REAR DEFOGGER IND REAR DEFOGGER SWITCH RED WIRE RED/BLK WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE

5-VOLT REF 1 5-VOLT REF 4 LOW REF BANK 1 SENSOR 1 (UPSTREAM OF LEFT CATALYTIC CONVERTER) BANK 2 SENSOR 1 (UPSTREAM OF RIGHT CATALYTIC CONVERTER) BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CMP SENS SIG OIL PRESS SIG DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) GRY WIRE GRY/WHT WIRE HEATED OXYGEN IC 2 CTRL IC 6 CTRL IC 3 CTRL CKP SENS SIG IC 7 CTRL IC 5 CTRL LOW REF 5-VOLT REF 2 IGNITION 1 VOLT LOW REF KS 1 SIG KS 2 SIG LOW REF LOW REF LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/WHT WIRE PNK WIRE PNK/BLK WIRE PPL PPL PNK PNK WIRE PPL TP SENS 2 SIG PPL/WHT WIRE TAC MTR CTRL 1 TAC MTR CTRL 2 IC 8 CTRL IC 4 CTRL LOW REF LOW REF TAN WIRE TAN/WHT WIRE TP SENS 1 SIG YEL WIRE

15 16 17 18 19 PPL 5 6 7 8 PNK PNK PPL WIRE 5 VOLT REF 3 5-VOLT REF 1 BLK WIRE BLK/WHT WIRE BPP SENS SIG BRAKE PEDAL POSITION SENSOR BREAKOUT) BRN WIRE DK GRN WIRE DK GRN/WHT WIRE ECT SENS SIG ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) EVAP CTRL FUEL TANK SIG GEN SIG GRY WIRE GRY/WHT WIRE LOW REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MAP SENS SIG NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PLUG SPARK PNK PNK WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE PPL PPL/WHT WIRE RED WIRE RED/WHT WIRE SIG SNSR STARTING/ CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TOS SIG TRANSMISSIONS SYSTEM VOL SPLY VSS HI SIG VSS LOW SIG WHT WIRE YEL WIRE

15 16 17 18 19 PPL BANK 1 SENSOR 2 (DOWNSTREAM OF LEFT CATALYTIC CONVERTER) BANK 2 SENSOR 2 (DOWNSTREAM OF RIGHT CATALYTIC CONVERTER) BLK WIRE BREAKOUT) BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION (CMP) SENSOR (FRONT OF ENGINE, ABOVE CRANK PULLEY) CRANKSHAFT POSITION (CKP) SENSOR (RIGHT REAR OF ENGINE) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE GRY WIRE GRY/WHT WIRE HEATED OXYGEN KNOCK SENSOR (KS) 1 (LOWER LEFT SIDE OF ENGINE) KNOCK SENSOR (KS) 2 (LOWER RIGHT SIDE OF ENGINE) LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR (ON TOP OF INTAKE MANIFOLD) NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PLUG SPARK PNK PNK WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE PPL PPL PNK PNK WIRE PPL/WHT WIRE RED WIRE TAN WIRE TAN/WHT WIRE

13 14 15 BPP SENS SIG LOW REF 5 VOLT REF 3 5-VOLT REF 1 8 9 DATA BUS (+) DATA BUS (-) BLK WIRE BODY CONTROL MODULE (BCM) BRAKE PEDAL POSITION (BPP) SENSOR BREAKOUT) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE ECT SENS SIG ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) EVAP CTRL FUEL LVL SIG FUEL TANK SIG GENERATOR SIG GRY WIRE GRY/WHT WIRE HARNESS, BETWEEN IGNITION COILS 4, 2) LOW REF LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MAP SENS SIG NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PLUG SPARK PMRY SEN SIG PNK WIRE PNK/BLK WIRE PNK/WHT WIRE PPL PPL 21 22 23 24 PPL 6 7 8 PPL/WHT WIRE RED WIRE SIG SNSR STARTING/ CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TOS SIG TRANSMISSIONS SYSTEM VOL SPLY VSS HI SIG VSS LOW SIG W/ TWO SPEED PUSH BUTTON, ELECTRIC SHIFT CONTROL TRANSFER CASE W/O TWO SPEED PUSH BUTTON, ELECTRIC SHIFT CONTROL TRANSFER CASE WHT WIRE YEL WIRE

BANK 1 SENSOR 2 (DOWNSTREAM OF LEFT CATALYTIC CONVERTER) BANK 2 SENSOR 2 (DOWNSTREAM OF RIGHT CATALYTIC CONVERTER) BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION (CMP) SENSOR (FRONT OF ENGINE, ABOVE CRANK PULLEY) CRANKSHAFT POSITION (CKP) SENSOR (RIGHT REAR OF ENGINE) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE COOLANT TEMPERATURE (ECT) SENSOR (ON TOP OF ENGINE) FROM ECM/THROT CONT FUSE 5 (DIAGRAM 2 OF 6) GRY WIRE GRY/WHT WIRE HEATED OXYGEN INJ-A FUSE 24 INJ-B FUSE 13 LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR (ON TOP OF INTAKE MANIFOLD) NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PNK 6 7 8 9 WIRE PNK PNK 24 25 WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE PPL PPL 21 22 23 24 PPL/WHT WIRE SNSR FUSE 18 SNSR FUSE 8 TAN WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) YEL WIRE YEL/BLK WIRE