GMC Sierra IV (2018-2022) red/vio Wiring diagrams

1-BN RS CAM VID SIG 2-BN TRAILER 2 REAR VISION CAM COAX VID SIG 1-CU FRONT CAM SIG 1 2-CU TRAILER REAR VISION CAM COAX VID SIG 1-GN LS CAM VID SIG 2-GN CARGO AREA CAM VID SIG 1-RD COMBINED CAM VID SIG 2 BATT POS VOLT BK COAX BLK/WHT WIRE CARGO AREA REAR VIEW DRIVER INFORMATION CENTER HIGH MOUNTED STOP LAMP COAX COAX BK COAX BN COAX CAM SIG COAX OG COMPUTER DATA LINES SYSTEM DRIVER OUTSIDE REAR- VIEW MIRROR GRILLE FRONT VIEW CAMERA GRY/GRN WIRE HOT AT ALL TIMES LEFT SIDE VIEW CAMERA LO SPD GMLAN SER DATA 2 LS VISION 1-BG CAM VID SIG PASSENGER OUTSIDE REAR VIEW MIRROR RADIO REAR VIEW CAMERA (IN TAILGATE HANDLE) RED/VIO WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT SIDE VIEW CAMERA TRAILER CONNECTOR VIDEO PROCESSING CONTROL MODULE

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

2.7L TURBO EXCEPT 2.7L TURBO, 3.0L TURBO DIESEL 3.0L TURBO DIESEL 5.3L, 6.2L A/C COMPRESSOR CLUTCH RELAY A/C COMPRESSOR CLUTCH RELAY CTRL A/C REFRIGERANT PRESSURE SENS SIG AIR COOLANT TEMPERATURE SIGNAL AUXILIARY HEATER COOLANT PUMP RELAY BATTERY POSITIVE VOLTAGE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/RED WIRE BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/YEL WIRE CABIN HEATER COOLANT MOTOR CTRL CHARGE AIR COOLER INLET TEMPERATURE SENSOR CHARGE AIR COOLER OUTLET TEMPERATURE SENSOR COMPUTER DATA LINES SYSTEM COOL DIVERTER VAL ACT CTRL HI COOL DIVERTER VAL ACT CTRL LOW COOL DIVERTER VAL POS SENS LOW REF COOLANT TEMP SENS 2 SIG ENGINE BLOCK COOLANT TEMP SIG ENGINE CONTROL MODULE (BEHIND LEFT HEADLAMP ASSEMBLY) ENGINE CONTROLS IGNITION RELAY ENGINE COOLANT TEMP SENS 3 SIG ENGINE COOLANT TEMP SENS SIG ENGINE COOLANT TEMPERATURE SENSOR ENGINE COOLANT TEMPERATURE SENSOR 7 ENGINE CTRL SENS 5 VOLT REF (2) ENGINE CTRL SENS 5 VOLT REF 1 ENGINE CTRL SENS LOW REF (3) ENGINE CTRL SENS LOW REF 1 ENGINE CTRL SENS LOW REF 2 ENGINE CTRL VEHICLE SENS LOW REF 1 ENGINE INLET COOLANT TEMP SIG ENGINE OUTLET COOLANT TEMP SIG GRN WIRE GRY/VIO WIRE HEATER CORE INLET TEMP SIG HEATER CORE OUTLET TEMP SIG HI SPD GMLAN SERIAL DATA (+) (3) HIGH SPEED COOLING FAN RELAY CTRL HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INLET TEMPERATURE SENSOR SIGNAL OUTSIDE AMBIENT AIR TEMP SENS SIG RED WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE SIGNAL GROUND TEMPERATURE SENSOR 1 LOW REF TEMPERATURE SENSOR LOW REFERENCE UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLU WIRE VIO/YEL WIRE WHT/GRY WIRE WHT/RED WIRE YEL/BLK WIRE YEL/BLU 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

2.7L TURBO EXCEPT 2.7L TURBO, 3.0L TURBO DIESEL 3.0L TURBO DIESEL 5.3L, 6.2L A/C COMPRESSOR CLUTCH RELAY A/C COMPRESSOR CLUTCH RELAY CTRL A/C REFRIGERANT PRESSURE SENS SIG AIR COOLANT TEMPERATURE SIGNAL AUXILIARY HEATER COOLANT PUMP RELAY BATTERY POSITIVE VOLTAGE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/RED WIRE BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/YEL WIRE CABIN HEATER COOLANT MOTOR CTRL CHARGE AIR COOLER INLET TEMPERATURE SENSOR CHARGE AIR COOLER OUTLET TEMPERATURE SENSOR COMPUTER DATA LINES SYSTEM COOL DIVERTER VAL ACT CTRL HI COOL DIVERTER VAL ACT CTRL LOW COOL DIVERTER VAL POS SENS LOW REF COOLANT TEMP SENS 2 SIG ENGINE BLOCK COOLANT TEMP SIG ENGINE CONTROL MODULE (BEHIND LEFT HEADLAMP ASSEMBLY) ENGINE CONTROLS IGNITION RELAY ENGINE COOLANT TEMP SENS 3 SIG ENGINE COOLANT TEMP SENS SIG ENGINE COOLANT TEMPERATURE SENSOR ENGINE COOLANT TEMPERATURE SENSOR 7 ENGINE CTRL SENS 5 VOLT REF (2) ENGINE CTRL SENS 5 VOLT REF 1 ENGINE CTRL SENS LOW REF (3) ENGINE CTRL SENS LOW REF 1 ENGINE CTRL SENS LOW REF 2 ENGINE CTRL VEHICLE SENS LOW REF 1 ENGINE INLET COOLANT TEMP SIG ENGINE OUTLET COOLANT TEMP SIG GRN WIRE GRY/VIO WIRE HEATER CORE INLET TEMP SIG HEATER CORE OUTLET TEMP SIG HI SPD GMLAN SERIAL DATA (+) (3) HIGH SPEED COOLING FAN RELAY CTRL HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INLET TEMPERATURE SENSOR SIGNAL OUTSIDE AMBIENT AIR TEMP SENS SIG RED WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE TEMPERATURE SENSOR 1 LOW REF TEMPERATURE SENSOR LOW REFERENCE UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLU WIRE VIO/YEL WIRE WHT/GRY WIRE WHT/RED WIRE YEL/BLK WIRE YEL/BLU WIRE

2.7L TURBO 2.7L TURBO, 3.0L TURBO 3.0L TURBO 3.0L TURBO DIESEL AMBIENT AIR TEMPERATURE SENSOR B+ VOLT BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/YEL WIRE BLOCK ENGINE COOLANT FLOW CONTROL VALVE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BRN WIRE BRN/YEL WIRE CLOSE CTRL COMPUTER DATA COMPUTER DATA LINES SYSTEM ENGINE COOLANT BYPASS VALVE ENGINE COOLANT TEMPERATURE SENSOR 1 ENGINE COOLANT TEMPERATURE SENSOR 5 ENGINE COOLANT TEMPERATURE SENSOR 6 FAN RLY CTRL GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/VIO WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/VIO WIRE HEATER COOLANT PUMP HI SPD COOLING J157 (2.7L TURBO) LINES SYSTEM LOGIC LOWER COOLING FAN MOTOR MAIN ENGINE COOLANT FLOW CONTROL VALVE NCA WIRE OPEN CTRL POS SIG RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RIGHT COOLING FAN MOTOR VIO/BLU WIRE WHT/RED WIRE YEL WIRE YEL/BLU WIRE

BK COAX BLK WIRE BLK/YEL WIRE BLU WIRE BLU/WHT WIRE BRN/BLK WIRE BRN/YEL WIRE COAX DEFOGGER SYSTEM DOWN DRIVER OUTSIDE REAR VIEW MIRROR CARGO LAMP DRIVER OUTSIDE REAR VIEW MIRROR FORWARD EXTERIOR FLOOD LAMP DRIVER OUTSIDE REAR VIEW MIRROR GLASS DRIVER OUTSIDE REAR VIEW MIRROR LOWER EXTERIOR FLOOD LAMP DRIVER OUTSIDE REAR VIEW MIRROR MOTOR DRIVER OUTSIDE REAR- VIEW MIRROR DRIVER SIDE OBJECT DETECTION INDICATOR DRIVER WINDOW/ OUTSIDE REAR VIEW MIRROR SWITCH GRN/BLK WIRE GRN/VIO WIRE GRY WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES LEFT LEFT MIDDLE SIDE MARKER LAMP LEFT SIDE VIEW CAMERA LEFT TURN SIGNAL REPEATER LAMP MIRROR DIMMING NAVIGATION SYSTEM PASSENGER OUT SIDE REAR VIEW MIRROR CARGO LAMP PASSENGER OUTSIDE REAR VIEW MIRROR PASSENGER OUTSIDE REAR VIEW MIRROR FORWARD EXTERIOR FLOOD LAMP PASSENGER OUTSIDE REAR VIEW MIRROR GLASS PASSENGER OUTSIDE REAR VIEW MIRROR LOWER EXTERIOR FLOOD LAMP PASSENGER OUTSIDE REAR VIEW MIRROR MOTOR PASSENGER SIDE OBJECT DETECTION INDICATOR RED/VIO WIRE RIGHT RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT MIDDLE SIDE MARKER LAMP RIGHT SIDE VIEW CAMERA RIGHT TURN SIGNAL REPEATER LAMP VIO/BLU WIRE VIO/GRY WIRE W/ AUXILIARY CARGO, CLEAR LAMP W/ LIGHT SENSITIVE REAR VIEW MIRROR W/O AUXILIARY CARGO, CLEAR LAMP W/O LIGHT SENSITIVE REAR VIEW MIRROR WHT WIRE WHT/VIO WIRE YEL/BRN WIRE YEL/VIO WIRE YEL/WHT 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 WIRE FRONT OVERHEAD CONSOLE ASSEMBLY GRY/GRN WIRE HOT AT ALL TIMES HOT W/ RETAINED ACCESSORY POWER RELAY 1 ENERGIZED LEFT INSTRUMENT PANEL FUSE BLOCK RED/VIO WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SLIDING REAR WINDOW CLOSE RELAY SLIDING REAR WINDOW MOTOR (RIGHT REAR OF PASSENGER COMPT) SLIDING REAR WINDOW OPEN RELAY SLIDING REAR WINDOW SWITCH VIO/YEL WIRE WHT WIRE YEL/BLU WIRE YEL/VIO WIRE

2.7L TURBO BACKUP ALARM (IF EQUIPPED) BACKUP LAMP RELAY CONTROL BATTERY FUSE BLOCK BLK WIRE BLU WIRE BLU/BRN WIRE BLU/WHT WIRE BODY CONTROL MODULE (LEFT END OF DASH) COMPUTER DATA LINES SYSTEM EXTERIOR LAMPS CIRCUIT GMLAN SERIAL DATA - 1 GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GROUND 17 GRY/BRN WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED LEFT TRAILER STOP/TURN SIGNAL LAMP RELAY LEFT TRAILER TURN SIG LAMP CONTROL LH REAR TRAILER STOP/TURN LAMP CTRL LOW SPEED GMLAN SERIAL DATA NCA WIRE PARK LAMP RELAY CONTROL PARK LAMPS RELAY RED/GRN WIRE RED/VIO WIRE RED/YEL WIRE RH REAR TRAILER STOP/TURN LAMP CTRL RIGHT TRAILER STOP/TURN SIGNAL LAMP RELAY RIGHT TRAILER TURN SIG LAMP CONTROL RUN/CRANK IGNITION 1 VOLTAGE 4 SECONDARY FUSED BATTERY POSITIVE VOLTAGE 56 SECONDARY FUSED BATTERY POSITIVE VOLTAGE 58 STOP LAMP RELAY COIL CONTROL TRAILER BACKUP LAMP CONTROL TRAILER BACKUP LAMPS RELAY TRAILER CONNECTOR TRAILER LIGHTING CONTROL MODULE TRAILER PARK LAMP CONTROL UNDERHOOD FUSE BLOCK VIO/GRN WIRE VIO/WHT WIRE W/ SPECIAL EQUIPMENT W/O SPECIAL EQUIPMENT WHT WIRE WHT/GRN WIRE YEL/BLU WIRE YEL/GRY WIRE