GMC Sierra IV (2018-2022) nca Wiring diagrams

ACTIVE GRILLE AIR SHUTTER 1 ACTUATOR ACTIVE GRILLE AIR SHUTTER 2 ACTUATOR BLK WIRE BLOCK ENGINE COOLANT FLOW CONTROL VALVE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE BUS 12 BUS 21 BUS 32 CHARGE AIR COOLER COOLANT PUMP COMM ENABLE ENGINE COOLANT BYPASS VALVE ENGINE COOLANT PUMP EVAPORATIVE EMISSION PURGE PUMP GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/VIO WIRE HEATER COOLANT PUMP HI SPD SER DATA (-) 1 LEFT COOLING FAN MOTOR LIN SER DATA NCA WIRE RIGHT COOLING FAN MOTOR SER DATA TRANSFER CASE CONTROL MODULE UHF LOW ENERGY REMOTE CONTROL ACCESS SENSOR TRANSCEIVER 1 UHF LOW ENERGY REMOTE CONTROL ACCESS SENSOR TRANSCEIVER 2 UHF LOW ENERGY REMOTE CONTROL ACCESS SENSOR TRANSCEIVER 3 UHF LOW ENERGY REMOTE CONTROL ACCESS SENSOR TRANSCEIVER 4 UHF SHORT RANGE LOW ENERGY REMOTE CONTROL ACCESS TRANSCEIVER VIO/YEL WIRE W/O ACTIVE TRANSFER CASE WHT WIRE WHT/BLU WIRE

2.7L TURBO 3.0L TURBO DIESEL ACC WAKEUP DATA BLK WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/WHT WIRE BLU/YEL WIRE BUS 22 COMM ENABLE ENGINE CNTRL MODULE LIN BUS 3 ENGINE CONTROL MODULE EXCEPT 3.0L TURBO DIESEL EXHAUST PARTICULATE MATTER SENSOR GRN WIRE GRN/BRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HI SPD GMLAN HI SPD SER DATA (+) 3 HI SPD SER DATA (+) 7 HI SPD SER DATA (+) 7 LIN SER DATA BUS 32 HI SPD SER DATA (-) 1 HI SPD SER DATA (-) 2 HIGH SPEED BUS TERMINATING RESISTOR LIN SER DATA LIN SER DATA BUS 21 LIN SER DATA BUS 22 LOWER COOLING FAN MOTOR (BEHIND LOWER SIDE OF RADIATOR) MULTI-FUNCTION INTAKE AIR SENSOR NCA WIRE NITROGEN OXIDES SENSOR 1 NITROGEN OXIDES SENSOR 2 NITROGEN OXIDES SENSOR 3 POWER STEERING CONTROL MODULE SER DATA (-) 7 VIO WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE YEL WIRE

BATT POS BLK WIRE BLK/WHT WIRE BLU/VIO WIRE COMPUTER DATA LINES SYSTEM CRANK DATA DATA 2 (+) DOOR AJAR IND DRIVER EXTERIOR DOOR HANDLE ASSEMBLY DRIVER EXTERIOR DOOR HANDLE SWITCH DRIVER INFORMATION CENTER DISPLAY GMLAN GMLAN SERIAL GND 18 GRN WIRE GRN/BLK WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/GRN WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED ING 1 INSTRUMENT CLUSTER LCK STATUS SIG LEFT FRONT DOOR HANDLE KEYLESS ENTRY ANTENNA LEFT REAR EXTERIOR DOOR HANDLE ASSEMBLY LEFT REAR EXTERIOR DOOR HANDLE SWITCH LO SPD LOCK SIG LOGIC NCA WIRE OFF/ACC VOLT PASSENGER EXTERIOR DOOR HANDLE ASSEMBLY PASSENGER EXTERIOR DOOR HANDLE SWITCH PNK WIRE RED/GRY WIRE RIGHT FRONT PASSENGER DOOR HANDLE KEYLESS ENTRY ANTENNA RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT REAR EXTERIOR DOOR HANDLE ASSEMBLY RIGHT REAR EXTERIOR DOOR HANDLE SWITCH RUN/ SECURITY IND SERIAL STEERING COLUMN LOCK MODULE VIO WIRE VIO/BLK WIRE VIO/GRY WIRE VIO/WHT WIRE VIO/YEL WIRE VOLT 14 VOLT 16 WHT/YEL WIRE YEL/BLU WIRE YEL/GRY WIRE

BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/VIO WIRE DRIVER BACK SEAT BLOWER MOTOR DRIVER BACK SEAT HEATING ELEMENT DRIVER CUSHION SEAT BLOWER MOTOR DRIVER CUSHION SEAT HEATING ELEMENT GRN/VIO WIRE GRY/BLK WIRE HOT W/ IGNITION MAIN RELAY ENERGIZED LOGIC NCA WIRE PASSENGER BACK SEAT BLOWER MOTOR PASSENGER BACK SEAT HEATING ELEMENT PASSENGER CUSHION SEAT BLOWER MOTOR PASSENGER CUSHION SEAT HEATING ELEMENT RIGHT INSTRUMENT PANEL FUSE BLOCK VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRY WIRE YEL/GRY WIRE

AUDIO SIG MICROPHONE SIG BACKUP LAMP CONTROL BATT POS VOLT BK COAX XM/HD BK LVDS INFOTAINMENT DISPLAY SIG BK USB ANTENNA XM SIGNAL OG COAX COAX CAM SIG BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BRN/BLU WIRE BRN/WHT WIRE BUTTON SIG CAMERA SIG (-) COAX COMPUTER DATA LINES SYSTEM CU COAX ANTENNA XM SIG DIMMING CTRL ETHERNET BUS 4 (-) GND SIG GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/VIO WIRE GRY/WHT WIRE GRY/YEL WIRE HOT AT ALL TIMES LEFT FRONT DOOR SPEAKER LEFT FRONT MOBILE TELEPHONE MICROPHONE LEFT INSTRUMENT PANEL SPEAKER LEFT REAR DOOR SPEAKER LF SPEAKER (-) CTRL 1 LF SPEAKER SIG (-) 1 LH RR SPEAKER CTRL (+) LH RR SPEAKER SIG (-) RADIO DISPLAY TOUCH INTERRUPT REQUEST SIG LO SPEED GMLAN DATA 2 LVDS NAVIGATION SYSTEM NCA WIRE PWR SIG RADIO RADIO DSPY BACKLIGHT LO REF RADIO KEYPAD VOLTAGE REF RED/WHT WIRE RED/YEL WIRE REPLICATED SIG RF SPEAKER (-) CTRL 1 RF SPEAKER SIG (-) 1 RH RR SPEAKER CTRL (+) AUDIO LO REF MICROPHONE LO REF RH RR SPEAKER SIG (-) RIGHT FRONT DOOR SPEAKER RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT INSTRUMENT PANEL SPEAKER RIGHT REAR DOOR SPEAKER USB USB RECEPTACLE VIO/BLU WIRE VIO/WHT WIRE VOLUME DOWN VOLUME UP W/ ONSTAR W/O ONSTAR WHT WIRE WHT/BLU WIRE YEL WIRE YEL/BLK WIRE

1-RD 2-RD 6.6L VIN 7 6.6L VIN Y TURBO DIESEL 6.6L VIN Y TURBO DIESEL BACK- WARD BACKLIGHT LO REF BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BRN/WHT WIRE CALL CELL CELLULAR PHONE NAVIGATION, DIGITAL RADIO ANTENNA COAX COMPUTER DATA LINES SYSTEM DIMMING CTRL DOWN ENGINE CONTROL MODULE FORWARD/ GPS/CELL GRY/BLU WIRE GRY/BRN WIRE GRY/VIO WIRE GRY/YEL WIRE HOME HOT AT ALL TIMES INFO DISPLAY MODULE LOGIC LOW REF 7 LVDS LVDS CABLE MUTE NAVI DISPLAY DIMMING CTRL NCA WIRE PNK WIRE RADIO CONTROLS RADIO DISPLAY TOUCH RADIO DSPY BACKLIGHT RADIO KEYPAD BUTTON SIG RADIO KEYPAD DIMMING CTRL RADIO KEYPAD LOW REF RADIO KEYPAD POWER SIG RADIO KEYPAD PWR SIG RADIO KEYPAD VOLT REF RADIO KEYPAD VOLTAGE REF RADIO PRESETS STEERING WHEEL CONTROLS SWITCH RADIO VOLUME DOWN SIG RADIO VOLUME STEERING WHEEL CONTROLS SWITCH RADIO VOLUME UP SIG RADIO, DISPLAY RED/YEL WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT STEERING WHEEL CONTROLS SWITCH SEEK LEFT UP SEEK RIGHT/ SELECT TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE VIO/BLU WIRE VIO/WHT WIRE VOICE VOICE RECOGNITION AUDIO LOW REF VOICE RECOGNITION AUDIO SIG W/ DIGITAL AUDIO SYSTEM W/ ONSTAR WHT/YEL WIRE YEL/BLU WIRE

AUDIO SIG (-) CTRL AUDIO SIG + BATT POSITIVE VOLT BK COAX AM/FM ANT SIG BK USB AM/FM ANT SIG BLK/BLU WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BRN/BLK WIRE BRN/BLU WIRE BU COAX GPS COAX COMPUTER DATA LINES SYSTEM CU COAX XM DOWN ETHERNET BUS 4 (-) ETHERNET BUS 6 (-) ETHERNET BUS 7 (-) GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/WHT WIRE GRY/YEL WIRE GY LVDS DISPLAY SIG HOT AT ALL TIMES LOGIC LVDS MICROPHONE (-) LOW REF MICROPHONE SIG MUTE NAVIGATION ANTENNA NAVIGATION SYSTEM NCA WIRE OG COAX COAX CAM SIG PNK WIRE RADIO RADIO ANTENNA RADIO PRESETS STEERING WHEEL CONTROLS SWITCH RADIO VOLUME STEERING WHEEL CONTROLS SWITCH RED/BLU WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT STEERING WHEEL CONTROLS SWITCH SEEK LEFT/ SEEK RIGHT/ SELECT USB VIO/YEL WIRE VOICE W/ DIGITAL AUDIO SYSTEM W/O ONSTAR WHT/YEL WIRE YEL/BLU WIRE

1-RD 2-RD AUDIO LOW REF AUDIO SIG + AUXILIARY AUDIO INPUT BATT POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BN CELL/GPS COAX CELLULAR PHONE NAVIGATION, DIGITAL RADIO ANTENNA COAX COMPUTER DATA LINES SYSTEM GND SIG GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES LEFT FRONT MOBILE TELEPHONE MICROPHONE LOGIC LOW REF LVDS MICROPHONE SIG NCA WIRE POWER DISTRIBUTION SYSTEM RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SERIAL DATA (+)9 SERIAL DATA COMMUNICATION SERIAL DATA (-) 9 SERIAL DATA 2 TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE USB USB RECEPTACLE VIO/YEL WIRE VT CELL COAX W/ DIGITAL AUDIO SYSTEM W/ ONSTAR WHT/BLU WIRE WHT/GRN WIRE YEL WIRE

BATT POS VOLT 2 BATT POS VOLT 3 BLK WIRE BLU/WHT WIRE BODY CTRL MODULE LIN BUS 2 BRN/BLK WIRE COMPUTER DATA LINES SYSTEM DISPLAY GND 11 GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES LEFT INSTRUMENT PANEL FUSE BLOCK LEFT REAR CUSHION SEAT HEATING ELEMENT LOGIC LR CUSHION TEMP SENS SIG LR CUSHION THERMISTOR FEEDBACK SIG NCA WIRE REAR SEAT HEATING CONTROL MODULE REAR SEAT HEATING SWITCH RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT REAR CUSHION SEAT HEATING ELEMENT RR CUSHION TEMP SENS SIG RR CUSHION THERMISTOR FEEDBACK SIG RR HTD SEAT CUSHION HEATING ELEMENT CTRL RR HTD SEAT CUSHION HEATING ELEMENT LO REF WHT/BLK WIRE WHT/BLU WIRE YEL/WHT WIRE

BLK/ORG WIRE BLU/ORG WIRE BRN/ORG WIRE DRIV SIDE IMPACT MOD HI CTRL DRIV SIDE IMPACT MOD LO CTRL DRIVER SEAT BELT ANCHOR 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/ORG 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/VIO WIRE ORG/WHT 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 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 SIDE AIR BAG 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 WHT/ORG WIRE YEL/ORG WIRE