Chevrolet Silverado T1XX (2019-2022) headlights system Wiring diagrams

5 VOLT REF HUMIDITY/WINDSCREEN TEMP, INSIDE MOISTURE SENS LO REF A/C COMP SOL VALVE CTRL A/C COMPRESSOR A/C COMPRESSOR CLUTCH A/C COMPRESSOR SOLENOID VALVE AMBIENT LIGHT/SUNLOAD SENSOR ANTI-THEFT SYSTEM AUXILIARY HEATER CTRL BATT POSITIVE VOLT BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLOWER MOTOR (RIGHT SIDE OF DASH) BLOWER MTR SPD CTRL BLOWER SPEED FEEDBACK SIGNAL BLU/BRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE BRN/GRN WIRE BRN/VIO WIRE COMPUTER DATA LINES SYSTEM DEFOGGER RLY CTRL DEFOGGER SYSTEM ELECTRICAL AUXILIARY HEATER GRN WIRE GRN/BLU WIRE GRN/YEL WIRE GROUND GRY WIRE GRY/BLU WIRE GRY/GRN WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED HUMIDITY SENS SIG 2 HUMIDITY TEMP SENS SIG HVAC CONTROL MODULE (BEHIND LEFT CENTER OF DASH) INSIDE AIR TEMP SENS SIGNAL LIN BUS 1 LIN SERIAL DATA BUS 19 LOGIC LOW SPD GMLAN SERIAL DATA NCA WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RUN IGNITION 3 VOLTAGE SOLAR SENSOR DRIVER SIGNAL SOLAR SENSOR LOW REFERENCE VIO WIRE VIO/BLK WIRE VIO/BRN WIRE VIO/GRY WIRE WHT/BLU WIRE WINDSCREEN TEMP SENS SIG WINDSHIELD TEMPERATURE, INSIDE MOISTURE SENSOR YEL/BLU WIRE YEL/RED WIRE

AC POWER OUTLET ENABLE AC POWER OUTLET SW SIG/ ALL WINDOWS OPEN SW SIG AIR CONDITIONING SYSTEM AMBIENT LIGHT SENS SIG ANTI-LOCK BRAKES SYSTEM AUTO STOP START IND CTRL AUTO STOP START SWITCH SIG BACKUP LAMP RLY CTRL BATT POSITIVE VOLT BATTERY POSITIVE VOLTAGE BLK WIRE BLK/BRN WIRE BLK/VIO WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LEFT END OF DASH) BRAKE APPLY SENS CTRL BRAKE APPLY SENS LOW REF BRAKE APPLY SENS SIG BRN WIRE BRN/BLK WIRE BRN/VIO WIRE BRN/WHT WIRE CARGO LAMP SW SIG COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CRUISE/ETC/TCC BRAKE SIG CURRENT SENS LOW REF DOOR LOCKS SYSTEM DOOR LOCKS, ANTI-THEFT SYSTEMS DOOR LOCKS, SHIFT INTERLOCK SYSTEMS EXTERIOR LIGHTS, ANTI-LOCK BRAKES, CRUISE CONTROL, SHIFT INTERLOCK SYSTEMS EXTERIOR LIGHTS, CRUISE CONTROL, SHIFT INTERLOCK SYSTEMS FOG LAMP RLY CTRL GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/WHT WIRE GROUND GRY WIRE GRY/GRN WIRE GRY/WHT WIRE HAZARD SW SIG HEADLAMP SW ON SIG HEADLAMP SW PARK LAMP SIG HEADLIGHTS SYSTEM HEADLIGHTS, EXTERIOR LIGHTS SYSTEMS HEADLIGHTS, INTERIOR LIGHTS SYSTEMS HORN RLY CTRL AC POWER OUTLET STATUS INDICATOR CTRL HORNS SYSTEM HOT AT ALL TIMES IGN MODE SW ACCESSORY LED SIG IGN MODE SW MODE VOLTAGE IGN MODE SW START LED SIG INDICATOR DIMMING CTRL INTERIOR LAMP CTRL INTERIOR LAMP DEFEAT SW SIG LED AMBIENT LIGHTING CTRL 2 LEFT HEADLAMP RELAY CTRL LEFT MINOR ENDGATE AJAR SIG LEFT TRAILER TURN SIG LAMP CTRL LIGHTING CTRL SWITCH REF LIGHTING CTRL SWITCH SIG LOW SPEED GMLAN SERIAL DATA MAJOR ENDGATE HIGH RELAY CTRL MAJOR ENDGATE LOW RELAY CTRL NETWORK BUS 4 OUT OF PARK SIG PARK LAMP RLY CTRL POWER DISTRIBUTION SYSTEM POWER WINDOWS SYSTEM RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE REMOTE FUNCTION ACTR CTRL REMOTE FUNCTION ACTR LO REF REMOTE FUNCTION ACTR TRANSMIT SIG RIGHT FRONT DRL CTRL RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT MINOR ENDGATE AJAR SIG RIGHT TRAILER TURN SIG LAMP CTRL HEADLAMP HIGH BEAM RLY CTRL RUN IGNITION 3 VOLT DOME LAMP OFF INDICATOR CTRL SECURITY INDICATOR CTRL SERIAL DATA (+) (1) REMOTE FUNC ACTR RECEIVE SIG SERIAL DATA (-) (1) STARTING/CHARGING SYSTEM STEERING COLUMN LOCK STATUS SIG STOP/TURN LAMP CTRL SW HEADLAMPS OFF SIG CTRL TASK LAMP SW SIG TRACTION CTRL SW SIG 1 TRAILER BRAKE APPLY SIG TRUNK, TAILGATE, FUEL DOORS SYSTEM TURN SIGNAL LAMP CTRL VIO/BRN WIRE VIO/GRN WIRE WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/VIO WIRE WIPER SW HIGH SIG WIPER/WASHER SYSTEM POWER DISTRIBUTION SYSTEM YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/GRY WIRE

12 VOLT REFERENCE ACCESSORY IGNITION VOLT ACCESSORY WAKEUP SER DATA AIR CONDITIONING, STARTING/CHARGING SYSTEMS ALL WINDOWS OPEN SWITCH SIG CTRL SW SIG BATT POSITIVE VOLT ANTI-THEFT SYSTEM BATTERY FUSE BLOCK BLK/GRY WIRE BLK/WHT WIRE BLOWER SPD FEEDBACK SIG CURRENT SENS SIG BLU/VIO WIRE BLU/YEL WIRE BODY CONTROL MODULE (LEFT END OF DASH) BRN/GRN WIRE BRN/GRY WIRE CHARGE INDICATOR CTRL COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM WIPER/WASHER SYSTEM CURRENT SENS CTRL DOOR LOCKS SYSTEM DOOR LOCKS, ANTI-THEFT SYSTEMS GAP UP/DOWN SW SIG GRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/VIO WIRE HAZARD SW LEFT TURN SIG HAZARD SWITCH RIGHT TURN SIG HDLP SW FLASH TO PASS SIG HEADLAMP DIMMER SW HIGH BEAM SIG HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM HORNS SYSTEM HEADLIGHTS, EXTERIOR LIGHTS SYSTEMS HIGH BEAM AUTO ON/OFF SW SIG HOOD STATUS B SIG HORN SW SIG HOT AT ALL TIMES IGNITION KEY RESISTOR SIG IGNITION SWITCH IMMOBILIZER CTRL IMMOBILIZER LOW REF LF DRL CTRL STEERING COLUMN KEY CYLINDER LOCK SOLENOID CTRL LH HDLMP LOW BEAM CTRL LOW REFERENCE NAVIGATION, CRUISE CONTROL SYSTEMS NAVIGATION, CRUISE CONTROL, SHIFT INTERLOCK SYSTEMS NETWORK SERIAL DATA BUS 15 OFF OFF/RUN/CRANK IGNITION VOLT POLICE SELECT SUPPLY VOLTAGE 4 POWER DISTRIBUTION SYSTEM POWER WINDOWS, ANTI-LOCK BRAKES SYSTEMS RAP RELAY COIL CTRL REAR LICENSE LP CTRL RED/YEL WIRE RF TURN SIG LP CTRL RH HDLMP LOW BEAM CTRL RIGHT HEADLAMP LOW BEAM CTRL RR STOP/TURN LAMP CTRL RUN WIRE RUN/CRANK IGNITION 1 VOLT RUN/CRANK RELAY COIL CTRL WINDSHIELD WIPER MOTOR RELAY COIL CTRL SERIAL DATA BUS 11 SERIAL DATA COMM ENABLE SET/COAST/RESUME/ ACCELERATE SW SIG SHIFT INTERLOCK, TRANSMISSIONS SYSTEMS SIG GROUND STARTING/CHARGING SYSTEM STOP LP RLY COIL CTRL TAP UP/TAP DOWN SW SIG TRANSMISSIONS SYSTEM VIO/BLK WIRE VIO/BLU WIRE VIO/GRY WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE WHT/VIO WIRE WHT/YEL WIRE WINDSHIELD WASHER RLY CTRL WINDSHIELD WASHER SW SIG WINDSHIELD WIPER SW LOW SIG WIPER MTR PARK SW SIG WIPER SW HIGH SIG WIPER/WASHER SYSTEM WIPER/WASHER SYSTEM POWER DISTRIBUTION SYSTEM YEL WIRE YEL/BLU WIRE YEL/BRN WIRE

BASE BASE EQUIPMENT BLK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/WHT WIRE CHEVROLET EXCEPT BASE EXCEPT BASE EQUIPMENT GMC GRN/VIO WIRE GRY WIRE GRY/BRN WIRE HEADLIGHTS SYSTEM PARK LAMPS RELAY RED/GRN WIRE RIGHT FENDER FRONT SIDE MARKER LAMP RIGHT FRONT SIDE MARKER LAMP RIGHT FRONT TURN SIGNAL LAMP RIGHT HEADLAMP ASSEMBLY RIGHT HEADLAMP MULTI-FUNCTION LED CONTROL MODULE RIGHT PARK/ TURN SIGNAL LAMP STOP LAMP RELAY TRAILER TOW CIRCUIT UNDERHOOD FUSE BLOCK VIO/GRY WIRE VIO/WHT WIRE W/ LED W/ SINGLE REAR WHEEL, RIDE, HANDLING CHASSIS W/O LED W/O SINGLE REAR WHEEL, RIDE, HANDLING CHASSIS

BASE BATTERY FUSE BLOCK BLK WIRE BLU/WHT WIRE BRN/WHT WIRE CARGO LAMP RELAY CENTER HIGH MOUNTED STOP LAMP CHEVROLET EXCEPT BASE GMC GRY WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES LEFT FENDER FRONT SIDE MARKER LAMP LEFT FRONT SIDE MARKER LAMP LEFT FRONT TURN SIGNAL LAMP LEFT HEADLAMP ASSEMBLY LEFT HEADLAMP MULTI-FUNCTION LED CONTROL MODULE LEFT PARK/ TURN SIGNAL LAMP RED/WHT WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK VIO/GRY WIRE W/ LED W/O LED WHT/VIO WIRE YEL WIRE

BLK WIRE BLU WIRE BLU/VIO WIRE BLU/WHT WIRE BRN/WHT WIRE GRN/VIO WIRE GROUND DISTRIBUTION SYSTEM GRY/BRN WIRE HEADLAMP RELAY HEADLIGHTS SYSTEM LEFT FRONT SIDE MARKER LAMP LEFT FRONT TURN SIGNAL LAMP LEFT HEADLAMP ASSEMBLY LEFT HEADLAMP MULTI-FUNCTION LED CONTROL MODULE PARK LAMPS RELAY RED/GRN WIRE STOP LAMP RELAY TRAILER LIGHTING CONTROL MODULE UNDERHOOD FUSE BLOCK VIO/GRY WIRE VIO/WHT WIRE WHT/BLU WIRE WHT/VIO WIRE YEL WIRE YEL/BRN WIRE YEL/GRY WIRE

BLK WIRE BRN/WHT WIRE CARGO LAMP RELAY CENTER HIGH MOUNTED STOP LAMP GRN/VIO WIRE GROUND DISTRIBUTION SYSTEM GRY/BRN WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES LIFTGATE COURTESY LAMP RED/WHT WIRE RIGHT FRONT SIDE MARKER LAMP RIGHT FRONT TURN SIGNAL LAMP RIGHT HEADLAMP ASSEMBLY RIGHT HEADLAMP MULTI-FUNCTION LED CONTROL MODULE RIGHT INSTRUMENT PANEL FUSE BLOCK UNDERHOOD FUSE BLOCK VIO/GRY WIRE VIO/WHT WIRE WHT/BLU WIRE WHT/VIO WIRE YEL/GRY WIRE

ACC VOLT ANTENNA BATT POSITIVE VOLT 23 BLK WIRE BLK/WHT WIRE BLU WIRE BLU/VIO WIRE BLU/WHT WIRE BODY CONTROL MODULE (UNDER LEFT SIDE OF DASH) BRN/GRN WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DR LCK ACTUATOR LCK CTRL DR LCK ACTUATOR LCK CTRL 2 DR LCK ACTUATOR UNLCK CTRL DR LCK KEY SW UNLCK SIG DRIVER DOOR LOCK SWITCH DRV DR LCK SW LCK SIG LF DR AJAR SW SIG DRV DR LK SW UNLCK SIG ENGINE CONTROL MODULE (6.6L) GND 23 LH HEADLAMP LO BEAM CTRL GRN/YEL WIRE GRY WIRE GRY/WHT WIRE HEADLIGHTS SYSTEM HI SPD GMLAN SER DATA (+) 1 HIGH SPEED GMLAN SERIAL DATA (-) (1) HOOD AJAR SWITCH HOOD STATUS A SIG HOOD STATUS B SIG HORN RLY CTRL HORNS SYSTEM IGN MODE SW CHALLENGE ACTIVE SIG LOGIC MIDDLE PRODUCTION PASS DR LCK SW LCK CTRL PASS DR LCK SW UNLCK CTRL PASSENGER DOOR LOCK SWITCH PASSENGER WINDOW MOTOR PASSENGER WINDOW SWITCH PNK WIRE RED/YEL WIRE REM CTRL DR LK RECEIVER LO REF REM CTRL DR LK RECEIVER TRANSMIT SIG REM CTRL DR LK RECEIVER CTRL REMOTE CONTROL DOOR LOCK RECEIVER RF DR AJAR SW SIG RH HEADLAMP LO BEAM CTRL RUN/CRANK IGN 1 VOLT STRA CLMN LK STATUS SIG REMOTE CTRL DR LK RECEIVER RECEIVE SIG VIO/BLK WIRE VIO/YEL WIRE W/ POWER OPERATED WINDOW W/O EXPRESS UP/DOWN W/ POWER OPERATED WINDOW, EXPRESS UP/DOWN W/O POWER OPERATED WINDOW WHT WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/VIO WIRE

5 VOLT REF A/C COMP SOL VALVE CTRL A/C COMPRESSOR A/C COMPRESSOR CLUTCH A/C COMPRESSOR SOLENOID VALVE AMBIENT LIGHT/SUNLOAD SENSOR ANTI-THEFT SYSTEM AUXILIARY HEATER CTRL BATT POSITIVE VOLT BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLOWER MOTOR (RIGHT SIDE OF DASH) BLOWER MTR SPD CTRL BLOWER SPEED FEEDBACK SIGNAL BLU/BRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE BRN/GRN WIRE BRN/VIO WIRE COMPUTER DATA LINES SYSTEM DEFOGGER RLY CTRL DEFOGGER SYSTEM ELECTRICAL AUXILIARY HEATER GRN WIRE GRN/BLU WIRE GRN/YEL WIRE GROUND GRY WIRE GRY/BLU WIRE GRY/GRN WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED HUMIDITY SENS SIG 2 HUMIDITY TEMP SENS SIG HVAC CONTROL MODULE (BEHIND LEFT CENTER OF DASH) INSIDE AIR TEMP SENS SIGNAL LIN BUS 1 LOGIC LOW SPD GMLAN SERIAL DATA NCA WIRE RED/GRY WIRE RED/VIO WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RUN IGNITION 3 VOLTAGE SOLAR SENSOR DRIVER SIGNAL SOLAR SENSOR LOW REFERENCE TEMP SENS LOW REF VIO WIRE VIO/BLK WIRE VIO/BRN WIRE VIO/GRY WIRE WHT/BLU WIRE WINDSCREEN TEMP SENS SIG WINDSHIELD TEMPERATURE, INSIDE MOISTURE SENSOR YEL/BLU WIRE YEL/RED WIRE

ACC VOLT ANTENNA BATT POSITIVE VOLT 23 BLK WIRE BLK/WHT WIRE BLU WIRE BLU/VIO WIRE BLU/WHT WIRE BODY CONTROL MODULE (UNDER LEFT SIDE OF DASH) BRN/GRN WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DR LCK ACTUATOR LCK CTRL DR LCK ACTUATOR LCK CTRL 2 DR LCK ACTUATOR UNLCK CTRL DR LCK KEY SW UNLCK SIG DRIVER DOOR LOCK SWITCH DRV DR LCK SW LCK SIG LF DR AJAR SW SIG DRV DR LK SW UNLCK SIG ENGINE CONTROL MODULE (6.6L) GND 23 LH HEADLAMP LO BEAM CTRL GRN/YEL WIRE GRY WIRE GRY/WHT WIRE HEADLIGHTS SYSTEM HI SPD GMLAN SER DATA (+) 1 HIGH SPEED GMLAN SERIAL DATA (-) (1) HOOD AJAR SWITCH HOOD STATUS A SIG HOOD STATUS B SIG HORN RLY CTRL HORNS SYSTEM IGN MODE SW CHALLENGE ACTIVE SIG LOGIC MIDDLE PRODUCTION PASS DR LCK SW LCK CTRL PASS DR LCK SW UNLCK CTRL PASSENGER DOOR LOCK SWITCH PASSENGER WINDOW MOTOR PASSENGER WINDOW SWITCH PNK WIRE RED/YEL WIRE REM CTRL DR LK RECEIVER LO REF REM CTRL DR LK RECEIVER TRANSMIT SIG REM CTRL DR LK RECEIVER CTRL REMOTE CONTROL DOOR LOCK RECEIVER RF DR AJAR SW SIG RH HEADLAMP LO BEAM CTRL RUN/CRANK IGN 1 VOLT STRA CLMN LK STATUS SIG REMOTE CTRL DR LK RECEIVER RECEIVE SIG VIO/BLK WIRE VIO/YEL WIRE W/ POWER OPERATED WINDOW W/O EXPRESS UP/DOWN W/ POWER OPERATED WINDOW, EXPRESS UP/DOWN W/O POWER OPERATED WINDOW WHT WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/VIO WIRE