GMC Sierra IV (2018-2022) Computer data lines circuit

ACC WAKEUP SER DATA BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/WHT WIRE BODY CONTROL MODULE (LEFT END OF DASH) BUS 1 BUS 11 (-) BUS 15 BUS 2 BUS 4 DATA LINK CONNECTOR FRONT SEAT HEATING CONTROL MODULE GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE HI SPD SER DATA (+) 1 LIN SER DATA BUS 3 HI SPD SER DATA (-) 1 HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IMMOBILIZER CONTROL MODULE LEFT REAR WINDOW SWITCH LIN SER DATA LIN SER DATA BUS 1 LIN SER DATA BUS 11 LIN SER DATA BUS 15 LIN SER DATA BUS 2 LIN SER DATA BUS 4 LO SPD GMLAN SER DATA POWER SUPPLY TRANSFORMER REAR SEAT HEATING CONTROL MODULE REAR SEAT HEATING SWITCH RED/VIO WIRE RED/WHT WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT REAR WINDOW SWITCH SER DATA COMM ENABLE SUNROOF MOTOR VIO/BLK WIRE VIO/YEL WIRE W/ KEYLESS ENGINE START SWITCH WHT WIRE WHT/BLU WIRE

ACC WAKEUP ACC WAKEUP SER DATA ACCESSORY DC/AC POWER INVERTER MODULE ASSIST STEP CONTROL MODULE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRAKE MASTER CYLINDER) BRAKE SYSTEM CONTROL MODULE BUS 31 BUS 33 GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRN/YEL WIRE HI SPD GMLAN HI SPD GMLAN SER DATA (+) 1 HI SPD GMLAN SER DATA (-) 2 HI SPD GMLAN SER DATA (-) 8 HI SPD GMLAN SER DATA (-) 9 HI SPD SER DATA (-) 1 HI SPD SER DATA (-) 2 LEFT SIDE OBJECT SENSOR MODULE LIN SER DATA LIN SER DATA BUS 31 LIN SER DATA BUS 33 LO SPD GMLAN LOW SPD GMLAN NOT USED PARK BRAKE SWITCH REAR GATE MODULE RED/VIO WIRE RIGHT SIDE OBJECT SENSOR MODULE RUN/CRANK IGN 1 VOL SER DATA SER DATA (-) 5 SER DATA COMM ENABLE SERIAL DATA GATEWAY MODULE TRAILER BRAKE CONTROL SWITCH TRAILER BRAKE POWER CONTROL MODULE TRAILER LIGHTING CONTROL MODULE VIO/BLK WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE

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

AUDIO AMPLIFIER BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/YEL WIRE BRN/BLK WIRE BRN/BLU WIRE BUS 6 (+) COMM ENABLE ETHERNET ETHERNET BUS 4 (-) ETHERNET BUS 6 (-) ETHERNET BUS 7 (-) GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/WHT WIRE HI DATA (+) 9 HIGH SPEED EXTENSION BUS 1 TERMINATING RESISTOR HIGH SPEED EXTENSION BUS 2 TERMINATING RESISTOR LO SPD DATA 2 LOW LEVEL MID/HIGH LEVEL RADIO SER DATA TRAILER TIRE PRESSURE INDICATOR MODULE VIDEO PROCESSING CONTROL MODULE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE

BLK/BLU WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/YEL WIRE BRN/BLU WIRE BUS 12 BUS 3 COMM ENABLE DRIVER WINDOW MOTOR DRIVER WINDOW/OUTSIDE REAR VIEW MIRROR SWITCH ETHERNET BUS 7 (-) GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/GRN WIRE HEAD-UP DISPLAY HI SPD SER DATA (+) 9 LIN SER DATA LIN SER DATA BUS 12 LO SPD DATA 2 LO SPD GMLAN PASSENGER WINDOW MOTOR PASSENGER WINDOW SWITCH RIGHT STEERING WHEEL CONTROLS SWITCH SER DATA STEERING WHEEL AIR BAG COIL VIO/YEL WIRE W/ DRIVER WINDOW W/ EXPRESS UP/DOWN W/ MULTI COLOR STANDARD GRAPHIC W/ PASSENGER WINDOW W/O EXPRESS UP/DOWN W/O MULTI COLOR STANDARD GRAPHIC WHT WIRE WHT/BLU WIRE WHT/GRN WIRE

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

3.0L DIESEL 3.0L TURBO DIESEL 6 SPEED A/T 8 SPEED A/T, 10 SPEED A/T ACC WAKEUP DATA ACCE WAKE-UP AUTOMATIC TRANSMISSION ASSEMBLY BATTERY SENSOR MODULE BLK WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/YEL WIRE BRN WIRE BUS 21 COMM ENABLE CONTROL SOLENOID VALVE ASSEMBLY DATA DATA 1 (+) EXCEPT 3.0L TURBO DIESEL FUEL PUMP DRIVER CONTROL MODULE GLOW PLUG CONTROL MODULE GRN WIRE GRN/BRN WIRE GRN/VIO WIRE GRY WIRE HI DATA (+) 1 HI DATA (+) 2 HI SPD GMLAN HI SPD SER HI SPD SER DATA (+) 7 HI SPD SER DATA (-) 1 HI SPD SER DATA (-) 2 INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE LIN SER DATA LO SPD SER DATA REDUCTANT CONTROL MODULE SER DATA SER DATA (-) (1) SER DATA (-) 7 SUSPENSION CONTROL MODULE TRANSMISSION CONTROL MODULE VIO/YEL WIRE W/ CONTINUOUS DAMPING CONTROL W/ CONTINUOUS DAMPING CONTROL CHASSIS PACKAGE W/O CONTINUOUS DAMPING CONTROL WAKEUP 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