GMC Sierra IV (2018-2022) blk Wiring diagrams

BLK WIRE BLK/ORG WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/VIO WIRE BLU/YEL WIRE BRAKE FLUID LEVEL SWITCH BRAKE IND BRK FLUID LVL BRN WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM 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 (BEHIND UNDERHOOD FUSE BLOCK) FRONT BRAKE PAD FRONT OVERHEAD CONSOLE ASSEMBLY GMLAN SER DATA (-) (2) GRN/GRY WIRE GRN/YEL WIRE GRY/GRN WIRE GRY/RED WIRE HI SPD GMLAN SER DATA BUS (+) 1 HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IGNITION SWITCH INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INSTRUMENT CLUSTER KEY-IN IGNITION SWITCH LEFT INSTRUMENT PANEL FUSE BLOCK LO SPD GMLAN SER DATA LOGIC NCA WIRE OFF ORG/BRN WIRE ORG/GRN WIRE ORG/VIO WIRE PARK BRAKE CONTROL SWITCH PARK BRK SW SIG PARK BRK SW SIG VOLT 1 PASS SEAT BELT IND PASS SEAT BELT SW LO REF PASS SEAT BELT SWITCH SIG PASSENGER SEAT BELT SWITCH PASSENGER SEAT BELT BUCKLE POWER DISTRIBUTION SYSTEM PRK BRK SW SIG REAR BRAKE PAD 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 YEL WIRE YEL/RED WIRE

AJAR SW SIG AUTO OFF BATT POS VOLT BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (UPPER LEFT SIDE OF DASH) BRN/BLU WIRE COMPUTER DATA LINES SYSTEM DRIVER DOOR LATCH ASSEMBLY GMLAN SERIAL DATA - 1 GRN/BRN WIRE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE HEAD HEADLAMP SW ON SIG HEADLAMP SW HEADLAMPS OFF SIG CTRL HEADLAMP SW PARK LP SIG HEADLAMP SWITCH LEFT FRONT BRAKE PAD WEAR SENSOR LEFT REAR BRAKE PAD WEAR SENSOR LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR WINDOW SWITCH LF DR AJAR SW SIG LIN BUS 3 LIN BUS 4 LOGIC LOGIC DRIVER WINDOW MOTOR LOGIC RIGHT REAR WINDOW SWITCH LR DR MOST SER DATA (+) NCA WIRE OFF/RUN/CRANK VOLT PARK PASSENGER DOOR LATCH ASSEMBLY PASSENGER WINDOW MOTOR PASSENGER WINDOW SWITCH PNK LF DOOR AJAR SW SIG WIRE PNK WIRE RADIO RED/GRY WIRE RF DR RF DR AJAR SW SIG RIGHT REAR DOOR LATCH ASSEMBLY RR DR AJAR SW SIG W/ POWER OPERATED WINDOW W/O EXPRESS UP/DOWN W/ POWER OPERATED WINDOW, EXPRESS UP/DOWN W/O POWER OPERATED WINDOW WHT WIRE WHT/VIO WIRE

BATT POS VOLT 28 BATT POS VOLT 4 BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/VIO WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ELECTRONIC BRAKE CONTROL MODULE (LEFT REAR OF ENGINE COMPT) GRN/BLK WIRE GRN/VIO WIRE GRY WIRE GRY/GRN WIRE GRY/RED WIRE HI SPD GMLAN SER DATA (+) 1 HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT PARK BRAKE ACTUATOR LEFT PARK BRAKE MOTOR APPLY CTRL LEFT PARK BRAKE MOTOR LOW REF LOGIC LOW SPD GMLAN SER DATA 2 PARK BRAKE CONTROL SWITCH (ON PARK BRAKE PEDAL ASSEMBLY) PARK BRK APPLY SW VOLT REF 1 PARK BRK APPLY SW VOLT REF 2 PARK BRK SW MONITOR SIG 1 PARK BRK SW MONITOR SIG 2 PARK BRK SW SIG PARK BRK SW TEST SIG PARK IND RED/GRY WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT PARK BRAKE ACTUATOR RIGHT PARK BRK MOTOR APPLY CTRL RIGHT PARK BRK MOTOR LOW REF SERVICE PARK BRAKE IND UNDERHOOD FUSE BLOCK WHT WIRE YEL WIRE YEL/RED WIRE

BATT POS VOLT BLK WIRE BLK/BRN WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BODY CONTROL MODULE (LEFT END OF DASH) BRAKE PEDAL POSITION SENSOR (ON BRAKE PEDAL ASSEMBLY) BRK APPLY SENS LO REF BRK APPLY SENS SIG BRK APPLY SENS VOLT REF BRK TRANS SHIFT INTERLOCK SOL CTRL COMPUTER DATA LINES SYSTEM GRN/WHT WIRE HI SPEED GMLAN SERIAL DATA (-) 1 HOT AT ALL TIMES KEY CAPTURE SOLENOID ACTUATOR PARK POSITION SWITCH RED/BLU WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SHIFT SELECT SW PARK SIG STRG COLUMN KEY CYL LOCK SOL CTRL TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LOCK CONTROL SOLENOID ACTUATOR VIO/GRY WIRE WHT WIRE WHT/GRN WIRE WHT/RED WIRE YEL/WHT WIRE

BATTERY POSITIVE VOLT BLK WIRE BLK/WHT WIRE BLU WIRE BLU/VIO WIRE BODY CONTROL MODULE COMPUTER DATA LINES SYSTEM DRIVER DOOR LATCH ASSEMBLY DRV DR OPEN SW SIG GRN WIRE GRN/VIO WIRE HIGH SPEED GMLAN SERIAL DATA + (1) HIGH SPEED GMLAN SERIAL DATA - (1) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED KEYLESS ENTRY CONTROL MODULE LO SPD GMLAN SERIAL DATA OFF/ACCESSORY IGN VOLT RED/GRY WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK STEERING COLUMN LOCK MODULE STEERING COLUMN LOCK SIG STEERING COLUMN LOCK STATUS SIG WHT WIRE WHT/YEL WIRE

BATT POS VOLT 18 BLK WIRE BLU WIRE BLU/GRN WIRE BODY CONTROL MODULE (UNDER LEFT SIDE OF DASH) BRN/BLU WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ETHERNET BUS 7 (-) GMLAN SERIAL DATA GND HI SPD GMLAN SER DATA (+)9 GRY/BLU WIRE HI SPD GMLAN SER DATA (-) 9 HOT AT ALL TIMES INSTRUMENT CLUSTER LOGIC RED/GRN WIRE TIRE PRESSURE IND TRAILER TIRE PRESSURE INDICATOR MODULE UNDERHOOD FUSE BLOCK WHT WIRE WHT/GRN WIRE

ACTIVE GRILLE AIR SHUTTER 1 ACTUATOR LOGIC ACTIVE GRILLE AIR SHUTTER 2 ACTUATOR LOGIC ACTUATOR HIGH CTRL ACTUATOR LOW CTRL BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE BUS 21 COMPUTER DATA LINES SYSTEM CTRL DATA DATA 2 (+) DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE ENGINE OIL IND EVAPORATIVE EMISSION PURGE PUMP EXHAUST CAMSHAFT POSITION ACTUATOR SOLENOID VALVE EXHAUST SENS CTRL 1 FIELD DUTY CYCLE SIG FUEL GAUGE IND GMLAN GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/VIO WIRE GRY/YEL WIRE HI VOLT CTRL CYLINDER 1 HI VOLT CTRL CYLINDER 3 HI VOLT SPLY CYLINDER 1 HI VOLT SPLY CYLINDER 3 IGNITION CONTROL 1 IGNITION CONTROL 3 IND INSTRUMENT CLUSTER INTAKE CAMSHAFT POSITION ACTUATOR SOLENOID VALVE INTAKE SENS CTRL 1 KNOCK SENSOR #2 KNOCK SENSOR 1 LO SPD LOGIC MAIN RLY FUSED SPLY (1) MALFUNCTION IND LAMP OIL PUMP COMMAND SIG OIL PUMP MOTOR CTRL POSI INTAKE SENS 1 SER SERIAL STARTING/ CHARGING SYSTEM VIO/BLK WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/GRN WIRE VIO/GRY WIRE WHT WIRE WHT/GRY WIRE WHT/RED WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/VIO WIRE

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLU WIRE BLU/GRY WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BRN WIRE BRN/BLU WIRE BRN/WHT WIRE BRN/YEL WIRE ENGINE OIL PRESSURE CONTROL SOLENOID VALVE FUEL INJECTOR 1 FUEL INJECTOR 2 FUEL INJECTOR 3 FUEL INJECTOR 4 GRN WIRE GRN/BLU WIRE GRN/GRY WIRE GRY/BLU WIRE GRY/VIO WIRE GRY/YEL WIRE HIGH PRESSURE FUEL PUMP HOT AT ALL TIMES IGNITION COIL 1 IGNITION COIL 2 IGNITION COIL 3 IGNITION COIL 4 LEFT ENGINE MOUNT SOLENOID VALVE NCA WIRE RED/GRN WIRE RIGHT ENGINE MOUNT SOLENOID VALVE RIGHT INSTRUMENT PANEL FUSE BLOCK SPARK PLUG VIO/BLK WIRE VIO/BLU WIRE VIO/GRN WIRE WHT WIRE WHT/RED WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/VIO WIRE

BATT POS VOLT BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLU/BRN WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BRN WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM EVAPORATIVE EMISSION VENT SOLENOID VALVE EXHAUST CAMSHAFT POSITION SENSOR FUEL LEVEL SENS LOW REF FUEL LEVEL SENSOR FUEL PUMP FUEL PUMP CONTROL FUEL PUMP DRIVER CONTROL MODULE (UNDER REAR OF VEHICLE, ABOVE SPARE TIRE) FUEL PUMP, LEVEL SENSOR ASSEMBLY FUEL TANK PRESSURE SENSOR GRN/GRY WIRE GRY WIRE GRY/BLU WIRE GRY/VIO WIRE GRY/YEL WIRE HI SPD GMLAN SER DATA (-) 7 HOT AT ALL TIMES INTAKE CAMSHAFT POSITION SENSOR POWER DISTRIBUTION SYSTEM PRESS SENS LOW REF PRESS SENS SIG PRIMARY FUEL LVL SENS SIG PRIMARY RLY CTRL RED/VIO WIRE RED/WHT WIRE RUN/CRANK IGN 1 VOLT SENS BUS ENABLE SHIELD GND SPLY VOLT PHASE 2 SPLY VOLT PHASE 3 UNDERHOOD FUSE BLOCK VENT SOL CTRL VIO/BLK WIRE VIO/BLU WIRE VIO/GRN WIRE WHT WIRE WHT/BRN WIRE WHT/RED WIRE YEL WIRE YEL/BRN WIRE YEL/GRY WIRE YEL/RED WIRE YEL/VIO WIRE

AUXILIARY UNDERHOOD FUSE BLOCK BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/VIO WIRE BRN/YEL WIRE CLUSTER SYSTEM COMPUTER DATA FUEL FILTER TEMP SENS LO REF FUEL FILTER TEMP SIG FUEL HEATER RELAY FUEL HEATER/WATER IN FUEL SENSOR (UNDER VEHICLE, ABOVE SPARE TIRE) FUEL LEVEL SENS LOW REF FUEL PMP ASSEMBLY SHD GND FUEL PRESSURE SENS LOW REF FUEL PRESSURE SENS SIG FUEL PRESSURE SENSOR FUEL PUMP CTRL FUEL PUMP DRIVER CONTROL MODULE FUEL PUMP PRIMARY RELAY CTRL FUEL PUMP SPLY VOLT PHASE 2 FUEL PUMP SPLY VOLT PHASE 3 GRN/BLU WIRE GRN/GRY WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE HI SPD GMLAN SER DATA (-) 7 HOT AT ALL TIMES INSTRUMENT LINES SYSTEM LOGIC NCA WIRE POWER DISTRIBUTION SYSTEM PRIMARY FUEL LEVEL SENS SIG RED/BLU WIRE RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE REDUCTANT CONTROL MODULE RELAY 1 REDUCTANT CONTROL MODULE RELAY 2 RUN/CRANK IGNITION 1 VOLT 4 SEC FSD BATT POSITIVE VOLT VIO/BLU WIRE VIO/GRN WIRE WAKE UP SIG WHT WIRE WHT/BRN WIRE WHT/RED WIRE WIF SENS LOW REF WIF SENS SIG WIF SENS VOLT REF YEL/GRY WIRE