GMC Sierra IV (2018-2022) serial data Wiring diagrams

1-BG LEFT SIDE VIEW CAMERA COAXIAL VIDEO SIG 1-GN FRONT VIEW CAMERA COAXIAL VIDEO SIG 1-RD COAXIAL VIDEO SIG 2-BG RIGHT SIDE VIEW CAMERA COAXIAL VIDEO SIG 2-RD REAR VIEW CAMERA COAXIAL VIDEO SIG BATT POS VOLT BLK/WHT WIRE CAMPER TRAILER CONNECTOR CARGO AREA REAR VIEW DRIVER INFORMATION CAMERA COAX COMPUTER DATA LINES SYSTEM GRY/GRN WIRE HOT AT ALL TIMES NCA WIRE RADIO REAR VIEW CAMERA RED/GRY WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SERIAL DATA VIDEO PROCESSING CONTROL MODULE

1-BG FRONT VIEW CAMERA COAXIAL VIDEO SIG 1-BG LEFT SIDE VIEW CAMERA COAXIAL VIDEO SIG 1-BN FRONT VIEW CAMERA COAXIAL VIDEO SIG 1-BN REAR VIEW CAMERA COAXIAL VIDEO SIG 1-RD COAXIAL VIDEO SIG 2-BG 2-BN LEFT SIDE VIEW CAMERA COAXIAL VIDEO SIG 2-BN RIGHT SIDE VIEW CAMERA COAXIAL VIDEO SIG 2-GN REAR VIEW CAMERA COAXIAL VIDEO SIG 2-RD BATT POS VOLT BLK/WHT WIRE CAMPER TRAILER CONNECTOR CARGO AREA REAR VIEW DRIVER INFORMATION CAMERA COAX COMPUTER DATA LINES SYSTEM DRIVER OUTSIDE REAR- VIEW MIRROR GRILLE FRONT VIEW CAMERA GRY/GRN WIRE HOT AT ALL TIMES LEFT SIDEVIEW CAMERA NCA WIRE PASSENGER OUTSIDE REAR VIEW MIRROR RADIO REAR VIEW CAMERA RED/GRY WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT SIDEVIEW CAMERA SERIAL DATA VIDEO PROCESSING CONTROL MODULE

BATTERY POSITIVE VOL BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BUS 19 BUS 9 COMM ENABLE DATA DATA (-) 11 DATA (-) 12 DATA (-) 13 DATA (-) 8 DATA 9 (+) ETHERNET BUS 4 (-) GMLAN GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/GRN WIRE GRY/WHT WIRE HI DATA (+) 9 HI SPD GMLAN SER HVAC CONTROL MODULE HVAC CONTROLS KEYLESS ENTRY CONTROL MODULE LIN SER DATA LO SPD LO SPD DATA 2 LO SPD GMLAN LOW LEVEL LOW SPD GMLAN MID/HIGH LEVEL NCA WIRE PARKING ASSIST CONTROL MODULE PASSENGER PRESENCE MODULE RED/VIO WIRE SEAT MEMORY CONTROL MODULE SER DATA SER DATA (+) 2 SER DATA - (3) SERIAL SERIAL DATA SIG GND STEERING COLUMN LOCK MODULE STEERING WHEEL AIR BAG COIL STEERING WHEEL HEATING CONTROL MODULE TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE VIO/YEL WIRE W/ FORWARD COLLISION W/O FORWARD COLLISION W/ ONSTAR W/O ONSTAR WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WINDSHIELD FRONT VIEW CAMERA

AMBIENT LIGHT SENS SIG AMBIENT LIGHT/ SUNLOAD SENSOR BATT POS VOLT 21 BATT POS VOLT 25 BATT POS VOLT 29 BLK WIRE BLK/GRN WIRE BLK/WHT WIRE BLU WIRE BLU/BRN WIRE BODY CONTROL MODULE (UNDER LEFT SIDE OF DASH) BRN/VIO WIRE BRN/WHT WIRE CHEVROLET COMPUTER DATA LINES SYSTEM DIMMER SWITCH FLASH TO PASS FOG LAMP RLY CTRL FRONT TURN SIG LAMP FEEDBACK SIG GMC GMLAN SERIAL DATA - 1 GND 18 GRN WIRE GRN/BRN WIRE GRN/YEL WIRE GROUND DISTRIBUTION SYSTEM GRY/BLU WIRE HAVC CONTROL HDLP HI BEAM RLY CTRL HDLP SW FLASH SIG HI BEAM SELECT SW HI BEAM SIG HDLP SW ON SIG HDLP SW OFF SIG HDLP SW REF HDLP SW SIG HIGH BEAM ASSIST HIGH BEAM AUTO ON/OFF SWITCH SIGNAL HOT AT ALL TIMES HVAC CONTROL MODULE LEFT HDLP RLY CTRL LEFT HEADLAMP ASSEMBLY LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LF DRL CTRL LH HDLP LOW BEAM CTRL LOW REFERENCE LOW SPEED GMLAN MODULE LIN BUS 1 RED/BLU WIRE RED/BRN WIRE RED/GRY WIRE RF DOOR AJAR SW SIG RH HDLP LOW BEAM CTRL RIGHT FRONT DRL CTRL RIGHT HEADLAMP ASSEMBLY RIGHT HIGH BEAM HEADLAMP RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT LOW BEAM HEADLAMP SERIAL DATA SOLAR SENSOR TURN SIGNAL/ MULTI-FUNCTION SWITCH VIO/BLK WIRE W/ LED W/O LED WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRY WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/BRN WIRE

AUTO BLK/WHT WIRE BLU/BLK WIRE BLU/VIO WIRE BRN WIRE COMMUNICATION ENABLE COMPUTER DATA LINES DIMMER SWITCH ELECTRONIC BRAKE CONTROL MODULE (BEHIND UNDERHOOD FUSE BLOCK) FRONT FOG LAMP SWITCH GRN/BRN WIRE GRY/RED WIRE HEAD HEADLAMP SWITCH MONITOR SIG 1 MONITOR SIG 2 OFF PARK PARK BRAKE PARK BRAKE CONTROL SWITCH PARK BRAKE SW PARK BRAKE SW SIG SERIAL DATA SW TEST SIG SYSTEM VOL REF 1 VOL REF 2 WHT/BLU WIRE WHT/BRN WIRE WHT/VIO WIRE YEL WIRE YEL/RED WIRE

1 PU 2 PU AUDIO LO REF AUDIO SIG + BACK BACK- WARD BATTERY POS VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BN COAX CELL CELL/GPS CELLULAR PHONE NAVIGATION, DIGITAL RADIO ANTENNA COAX COMPUTER DATA LINES SYSTEM FRONT WARD GND SIG GRN/BLK WIRE GRY/GRN WIRE GRY/YEL WIRE HOME HOT AT ALL TIMES LEFT FRONT MOBILE TELEPHONE MICROPHONE LO REF LOGIC LVDS MICROPHONE (-) LOW REF MICROPHONE SIG MUTE NCA WIRE POWER DISTRIBUTION SYSTEM RED/BLU WIRE RED/WHT WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SERIAL DATA SERIAL DATA (-) 9 SERIAL DATA (-) 9 SERIAL DATA (+) 9 SERIAL DATA 2 TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE USB VIO/YEL WIRE W/ ONSTAR W/ REAR HEATED SEATS W/O ONSTAR WHT/BLU WIRE WHT/GRN WIRE

AC POWER OUTLET ENABLE ACCESSORY DC/AC POWER INVERTER MODULE BLK WIRE BLK/WHT WIRE BLU/BRN WIRE BODY CONTROL MODULE BRN WIRE BRN/BLK WIRE CARGO ACCESSORY POWER RECEPTACLE COMPUTER DATA LINES SYSTEM DC/AC INVERTER CTRL DC/AC INVERTER CTRL 2 FROM UNDERHOOD FUSE BLOCK (DIAGRAM 7 OF 10) GRN WIRE GRN/BRN WIRE GROUND LOGIC LOW REF LOW REF (8) NCA WIRE RED WIRE RED/WHT WIRE SERIAL DATA VIO/YEL WIRE WAKEUP SERIAL DATA DC/AC INVERTER RLY CTRL WHT/GRN WIRE

AIR BAG IND AIR BAG OFF IND AIR BAG ON IND BATT POS VOLT PASS SEAT BELT IND BLK WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/ORG WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY FRONT OVERHEAD CONSOLE ASSEMBLY GRN WIRE GRY WIRE GRY/GRN WIRE GRY/ORG WIRE HI SPD GMLAN (-) 2 INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INSTRUMENT CLUSTER LEFT INSTRUMENT PANEL CENTER ACCESSORY FUNCTION SWITCH LO SPD GMLAN LOGIC LOW SPD GMLAN SERIAL DATA MOD STAGE 1 HI MOD STAGE 1 LO MOD STAGE 2 HI MOD STAGE 2 LO ORG/ WIRE ORG/GRN WIRE ORG/VIO WIRE ORG/WHT WIRE PASS AIR BAG OFF IND PASS AIR BAG ON IND PASS MOD SW RET PASS MOD SW SIG PASS STAGE 1 HI PASS STAGE 1 LO PASS STAGE 2 HI PASS STAGE 2 LO PASSENGER INSTRUMENT PANEL AIR BAG RED/GRN WIRE SD COMM ENABLE SEAT BELT IND SERIAL DATA SHORTING BAR STEERING WHEEL AIR BAG COIL VIO WIRE VIO/WHT WIRE W/ ROLL OVER SENSING SWITCH WHT WIRE WHT/BLU WIRE WHT/ORG WIRE YEL WIRE YEL/ORG WIRE