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

2/- ABS PUMP FUSE ABS VLV FUSE BATT POSITIVE VOLT BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/YEL WIRE BRAKE BOOSTER VACUUM SENSOR BRAKE FLUID LEVEL SENS SIG BRAKE FLUID LEVEL SWITCH BRAKE PRESSURE MODULATOR BRAKE VACUUM SENS 5 VOLT REF BRAKE VACUUM SENS LOW REF BRAKE VACUUM SENS SIG CMBD VHCE IN SENS SPLY VOLT COMPUTER DATA LINES SYSTEM DK BLU WIRE ELECTRONIC BRAKE CONTROL MODULE (ON LEFT SIDE OF FRAME ASSEMBLY) EXCEPT BASE EQUIPMENT BASE EQUIPMENT GMLAN GMLAN SERIAL DATA - 1 GMLAN SERIAL DATA 2 GRN/GRY WIRE GRY WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/WHT WIRE GRY/YEL WIRE HOT AT ALL TIMES INSTRUMENT PANEL JUNCTION BLOCK LEFT FRONT WHEEL SPEED SENSOR LEFT REAR WHEEL SPEED SENSOR LF WHL SPD SENS CTRL LF WHL SPD SENS SIG LR WHL SPD SENS CTRL LR WHL SPD SENS SIG LT GRN/BRN WIRE LT GRN/GRY WIRE NCA WIRE RED/VIO WIRE RED/YEL WIRE RF WHL SPD SENS CTRL RF WHL SPD SENS SIG RR WHL SPD SENS CTRL RR WHL SPD SENS SIG SENS SERIAL DATA COMM ENABLE SPLY VOLT STEERING WHEEL ANGLE SENSOR (ON STEERING COLUMN) UNDERHOOD FUSE BLOCK VEHICLE SPD SIG VIO WIRE WHT WIRE WHT/DK BLU WIRE YEL WIRE YEL/PPL WIRE YEL/RED WIRE

4.3L FLEX FUEL 5 VOLT REF 5.3L FLEX FUEL, 6.2L 6.6L TURBO DIESEL ABS IND. BASE EQUIPMENT BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/WHT WIRE BLU/VIO WIRE BLU/YEL WIRE BODY CONTROL MODULE BPP SENS LO REF BPP SENS SIG BRAKE IND BRAKE PEDAL POSITION SENSOR (BEHIND BRAKE PEDAL ASSEMBLY) COMPUTER DATA LINES SYSTEM DESCENT SW DK BLU WIRE DK BLU/VIO WIRE DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE EQUIPMENT) ESC IND ESC OFF IND EXCEPT BASE EXCEPT BASE EQUIPMENT GMLAN DATA GMLAN DATA - (1) GRN/GRY WIRE GRY/BRN WIRE GRY/RED WIRE GRY/YEL WIRE HILL DESCENT CONTROL SWITCH HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT PANEL JUNCTION BLOCK INSTRUMENT PANEL MULTI- FUNCTION SWITCH IPC FUSE LEFT INSTRUMENT PANEL FUSE BLOCK LOGIC NCA WIRE PARK BRAKE SWITCH PRK BRK SW SIG RED/GRY WIRE RIGHT FRONT WHEEL SPEED SENSOR RIGHT REAR WHEEL SPEED SENSOR SENS LOW REF STOP LP SW SIG TRACTION CONTROL OFF IND TRACTION CONTROL OFF SWITCH TRACTION SW VIO WIRE WHT WIRE WHT/GRN WIRE YEL WIRE

A/C CMPRSR MDL/BATT RVC FUSE B+ VOLT BASE EQUIPMENT BLK WIRE BLK/WHT WIRE BLU/YEL WIRE BRN WIRE COMBINED VEHICLE INERTIAL SENSOR SUPPLY VOLT COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/YEL WIRE DK GRN WIRE DRIVER INFORMATION CENTER DISPLAY ELECTRONIC BRAKE CONTROL MODULE EXCEPT BASE EQUIPMENT GROUND GRY/GRN WIRE HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (2) HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT PRESSURE SENSOR LOGIC LOW REF LOW SPD GMLAN SERIAL DATA 2 LT GRN/BRN WIRE NCA WIRE POWER STEERING CONTROL MODULE (ON POWER STEERING RACK ASSEMBLY) POWER STEERING PRESSURE SENSOR RED WIRE RED/WHT WIRE RIGHT PRESSURE SENSOR SERIAL DATA COMMUNICATION ENABLE SIGNAL GROUND STEERING SOL CONTROL STEERING SOL LOW REF STEERING WHEEL ANGLE SENSOR UNDERHOOD FUSE BLOCK VARIABLE POWER STEERING SOLENOID VALVE WHT WIRE WHT/DK BLU 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

BASE EQUIPMENT EXCEPT BASE EQUIPMENT BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE COLLISION ALERT INDICATORS DATA LINK CONNECTOR DRIVER SEAT HEATING, COOLING SWITCH EXCEPT BASE EQUIPMENT FORWARD ADJUSTABLE PEDAL RELAY HEADLAMP SWITCH HVAC CONTROL MODULE IGNITION MAIN RELAY INSTRUMENT CLUSTER INSTRUMENT PANEL JUNCTION BLOCK INSTRUMENT PANEL MULTI- FUNCTION SWITCH NCA WIRE PASSENGER SEAT HEATING, COOLING SWITCH REARWARD ADJUSTABLE PEDAL RELAY RETAINED ACCESSORY POWER RELAY 1 STEERING WHEEL ANGLE SENSOR TOW/HAUL MODE SWITCH TRANSMISSION MANUAL SHIFT SWITCH TRANSMISSION SHIFT LOCK CONTROL SOLENOID ACTUATOR TURN SIGNAL/ MULTI-FUNCTION SWITCH WHT WIRE WINDSHIELD WIPER MOTOR

ACCESSORY DC/AC POWER INVERTER MODULE BASE EQUIPMENT EXCEPT BASE EQUIPMENT BLK WIRE BLOWER MOTOR CARGO LAMP RELAY CENTER CONSOLE COMPARTMENT ACCESSORY POWER RECEPTACLE CENTER CONSOLE COMPARTMENT LAMP CENTER CONSOLE REAR ACCESSORY POWER RECEPTACLE CENTER HIGH MOUNTED STOP LAMP CHILD SECURITY LOCK DISABLE RELAY DATA LINK CONNECTOR DOME LAMP SWITCH DOOR DEAD LOCK RELAY ELECTRICAL AUXILIARY HEATER FIVE LAMP, ROOF MARKER FRONT MIDDLE ROOF CLEARANCE LAMP FRONT OVERHEAD CONSOLE LEFT DOME/ READING LAMPS GARAGE DOOR OPENER HORN SWITCH INSIDE REAR VIEW MIRROR INSTRUMENT PANEL 1 ACCESSORY POWER RECEPTACLE INSTRUMENT PANEL 2 ACCESSORY POWER RECEPTACLE INSTRUMENT PANEL ACCESSORY POWER RECEPTACLE INSTRUMENT PANEL JUNCTION BLOCK LEFT FRONT OUTER ROOF CLEARANCE LAMP LEFT STEERING WHEEL CONTROLS SWITCH LEFT SUNSHADE MOBILE DEVICE WIRELESS CHARGER MODULE NCA WIRE OVERHEAD CONSOLE ACCENT LAMP PASSENGER AIR BAG DISABLED INDICATOR RADIO PRESETS STEERING WHEEL CONTROLS SWITCH RADIO VOLUME STEERING WHEEL CONTROLS SWITCH RED WIRE RETAINED ACCESSORY POWER RELAY 2 RIGHT FRONT OUTER ROOF CLEARANCE LAMP RIGHT FRONT OVERHEAD CONSOLE DOME/ READING LAMPS RIGHT STEERING WHEEL CONTROLS SWITCH RIGHT SUNSHADE ROOF BEACON PROVISION (BLUNT CUT) ROOF BEACON RELAY ROOF BEACON SWITCH SLIDING REAR WINDOW CLOSE RELAY SLIDING REAR WINDOW OPEN RELAY SLIDING REAR WINDOW SWITCH STEERING WHEEL AIR BAG COIL STEERING WHEEL HEATER STEERING WHEEL HEATING CONTROL MODULE SUNROOF MOTOR SUNROOF SWITCH TRANSFER CASE SHIFT CONTROL SWITCH W/ HEATER STEERING WHEEL W/ ROOF MOUNTED PROVISIONS LAMP W/ SUN ROOF GLASS SLIDING WINDSHIELD FRONT VIEW CAMERA YEL WIRE

6.0L ALTERNATIVE FUEL PRESSURE SENSOR ALTERNATIVE FUEL RAIL PRESSURE/ TEMPERATURE SENSOR ALTERNATIVE FUEL SYSTEM DATA CONNECTOR ALTERNATIVE FUEL TANK TEMPERATURE SENSOR AUDIO AMPLIFIER AUDIO/ VIDEO INPUT ADAPTER AUXILIARY AUDIO INPUT BLK WIRE CENTER CONSOLE COMPARTMENT ACCESSORY POWER RECEPTACLE CENTER SEAT ACCESSORY POWER RECEPTACLE CNG CONTROL MODULE CNG HIGH PRESSURE REGULATOR TEMPERATURE SENSOR FUEL PUMP DISABLE CONTROL MODULE FUEL PUMP DISABLE RELAY HUMAN MACHINE INTERFACE CONTROL MODULE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INFO DISPLAY MODULE INSTRUMENT PANEL JUNCTION BLOCK MEDIA DISC PLAYER MID LEVEL UP LEVEL NCA WIRE PARKING ASSIST CONTROL MODULE PASSENGER BACK SEAT BLOWER MOTOR PASSENGER BACK SEAT HEATING ELEMENT PASSENGER CUSHION SEAT BLOWER MOTOR PASSENGER CUSHION SEAT HEATING ELEMENT PASSENGER DOOR HANDLE FLOOD LAMP PASSENGER DOOR LATCH ASSEMBLY PASSENGER DOOR LOCK SWITCH PASSENGER OUTSIDE REAR VIEW MIRROR PASSENGER OUTSIDE REAR VIEW MIRROR CARGO LAMP PASSENGER OUTSIDE REAR VIEW MIRROR COURTESY LAMP PASSENGER OUTSIDE REAR VIEW MIRROR GLASS PASSENGER PRESENCE MODULE PASSENGER SEAT ADJUSTER SWITCH PASSENGER WINDOW SWITCH RADIO REAR VIEW CAMERA RIGHT MIDDLE SIDE MARKER LAMP RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR WINDOW SWITCH RIGHT TURN SIGNAL REPEATER LAMP SEAT HEATING CONTROL MODULE TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE USB RECEPTACLE W/ COLOR LIGHT SENSITIVE W/ DRIVER, PASSENGER SPLIT SEAT W/ FRONT SEAT ADJUSTER W/ FRONT SEAT ADJUSTER W/O DRIVER, PASSENGER SPLIT SEAT W/ FRONT SEAT HEATER W/ ONSTAR W/ POWER OPERATED WINDOW W/ REAR SEAT ENTERTAINMENT PACKAGE W/O COLOR LIGHT SENSITIVE W/O DRIVER, PASSENGER SPLIT SEAT W/O FRONT SEAT ADJUSTER W/O POWER OPERATED WINDOW W/O POWER OPERATED WINDOW W/ POWER OPERATED WINDOW WHT WIRE

6.0L (VIN B) 6.0L (VIN G) 6.0L VIN G, 6.6L ASSIST STEP CONTROL MODULE BACKUP ALARM BLK WIRE BRAKE FLUID LEVEL SWITCH BRN WIRE CAMPER TRAILER PROVISION BLUNT CUT CHASSIS CONTROL MODULE ELECTRONIC BRAKE CONTROL MODULE ENDGATE MARKER LAMP EXHAUST PARTICULATE MATTER SENSOR FUEL PUMP DRIVE CONTROL MODULE GMC LEFT BACKUP LAMP LEFT CARGO LAMP LEFT FRONT REAR FENDER CLEARANCE LAMP LEFT LICENSE PLATE LAMP LEFT LOWER TAIL/ STOP, TURN SIGNAL LAMP LEFT REAR MOST FENDER CLEARANCE LAMP LEFT REAR SIDE MARKER LAMP LEFT TAIL LAMP ASSEMBLY LEFT TAIL/STOP, TURN SIGNAL LAMP LEFT UPPER TAIL/STOP, TURN SIGNAL LAMP LICENSE PLATE LAMP NCA WIRE NITROGEN OXIDES SENSOR 2 POWER STEERING CONTROL MODULE PRIMARY FUEL PUMP, PRIMARY FUEL PUMP, LEVEL SENSOR ASSEMBLY REAR DEFOGGER GRID RIGHT BACKUP LAMP RIGHT CARGO LAMP RIGHT FRONT REAR FENDER CLEARANCE LAMP RIGHT LICENSE PLATE LAMP RIGHT LOWER TAIL/ STOP, TURN SIGNAL LAMP RIGHT REAR MOST FENDER CLEARANCE LAMP RIGHT REAR SIDE MARKER LAMP RIGHT TAIL LAMP ASSEMBLY RIGHT TAIL/STOP, TURN SIGNAL LAMP RIGHT UPPER TAIL/STOP, TURN SIGNAL LAMP SECONDARY FUEL PUMP SECONDARY FUEL PUMP, LEVEL SENSOR ASSEMBLY SUSPENSION CONTROL MODULE TRAILER BRAKE POWER CONTROL MODULE TRAILER CONNECTOR W/ REAR BUMPER W/O REAR BUMPER W/O SINGLE REAR WHEEL CHASSIS WHT WIRE

BLK/ORG WIRE BRN WIRE BRN/ORG WIRE DRIV SIDE IMPACT MOD HI CTRL DRIV SIDE IMPACT MOD LO CTRL DRIVER SEAT BELT ANCHOR PRETENSIONER DRIVER SEAT BELT RETRACTOR PRETENSIONER DRIVER SEAT BELT SW LO REF DRIVER SEAT BELT SW SIG DRIVER SEAT BELT SWITCH DRIVER SEAT BELT BUCKLE DRIVER SEAT POS SW SIG DRIVER SEAT POSITION SENSOR DRIVER SEAT SIDE AIR BAG DRV SB ANCH PRET HIGH CTRL DRV SB ANCH PRET LOW CTRL DRV SEAT RET PRE HI CTRL DRV SEAT RET PRE LO CTRL GRN WIRE GRN/ORG WIRE GRY WIRE GRY/ORG WIRE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE LF DISCRIMINATING SENS LO REF LF DISCRIMINATING SENS SIG LF HEAD CURTAIN MOD HI CTRL LF HEAD CURTAIN MOD LO CTRL LF SIDE IMPACT MOD LO REF LF SIDE IMPACT MOD SIG LR SIDE IMPACT MOD LO REF LR SIDE IMPACT MOD SIG NCA WIRE ORG/BLU WIRE ORG/BRN WIRE ORG/GRN WIRE ORG/GRY WIRE ORG/LT GRN WIRE ORG/VIO WIRE ORG/YEL WIRE PASS SB ANCH PRET HIGH CTRL PASS SB ANCH PRET LOW CTRL PASS SEAT BELT SW LO REF PASS SEAT BELT SWITCH SIG PASS SEAT POSITION SWITCH SIG PASS SEAT RET PRE HI CTRL PASS SEAT RET PRE LO CTRL PASS SIDE IMPACT MOD HI CTRL PASS SIDE IMPACT MOD LO CTRL 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 RF DISCRIMINATING SENS LO REF RF DISCRIMINATING SENS SIG RF HEAD CURTAIN MOD HI CTRL RF HEAD CURTAIN MOD LO CTRL RF SIDE IMPACT MOD LO REF RF SIDE IMPACT MOD SIG RIGHT ROOF RAIL AIR BAG RR SIDE IMPACT MOD LO REF RR SIDE IMPACT MOD SIG SHORTING BAR VIO/ORG WIRE W/O BASE EQUIPMENT WHT WIRE WHT/ORG WIRE YEL/ORG WIRE

BASE EQUIPMENT BCM 3 FUSE BLK WIRE BLK/ORG WIRE BRAKE FLUID LEVEL SWITCH BRAKE IND BRK FLUID LVL COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/YEL WIRE DLIS FUSE DRIVER INFORMATION CENTER DISPLAY DRIVER SEAT BELT SW LO REF DRIVER SEAT BELT SW SIG DRIVER SEAT BELT SWITCH DRIVER SEAT BELT BUCKLE DRIVER SEAT POS SW SIG DRIVER SEAT POSITION SENSOR ELECTRONIC BRAKE CONTROL MODULE EXCEPT BASE EQUIPMENT GMLAN SER DATA (-) (2) GRN/GRY WIRE GRY/GRN WIRE HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IGNITION SWITCH INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INSTRUMENT CLUSTER INSTRUMENT PANEL JUNCTION BLOCK IPC IGN/ SDM IGN FUSE KEY-IN IGNITION SWITCH LEFT INSTRUMENT PANEL FUSE BLOCK LO SPD GMLAN SER DATA LOGIC NCA WIRE OFF ORG/BLU WIRE ORG/BRN WIRE ORG/GRN WIRE ORG/VIO WIRE PASS SEAT BELT IND PASS SEAT BELT SW LO REF PASS SEAT BELT SWITCH SIG PASS SEAT POSITION SWITCH SIG PASSENGER AIR BAG DISABLED INDICATOR PASSENGER SEAT BELT SWITCH PASSENGER SEAT BELT BUCKLE PASSENGER SEAT POSITION SENSOR POWER DISTRIBUTION SYSTEM RED WIRE RED/BLU WIRE RED/GRY WIRE RUN WIRE RUN/CRANK SEAT BELT IND SEAT BELT ON IND TIRE PRESSURE IND VIO WIRE VIO/BLK WIRE VIO/WHT WIRE WHT WIRE WHT/VIO WIRE