GMC Sierra IV (2018-2022) wht Wiring diagrams

2.7L TURBO BACKUP LP RLY CTRL BASE BODY/CHASSIS BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLU WIRE BLU/BRN WIRE BODY CONTROL MODULE (LEFT END OF DASH) COMPUTER DATA LINES SYSTEM GRN WIRE GRN/WHT WIRE HI SPD GMLAN SER DATA (+) 1 HOT AT ALL TIMES INSIDE REAR VIEW MIRROR LEFT BACKUP LAMP LEFT TAIL LAMP ASSEMBLY NCA WIRE RADIO RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RIGHT BACKUP LAMP RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT TAIL LAMP ASSEMBLY TRAILER BACKUP LAMPS RELAY UNDERHOOD FUSE BLOCK W/ LOW LEVEL W/ MID/ HIGH LEVEL WHT WIRE WHT/GRN WIRE

2.7L TURBO 3.0L TURBO DIESEL BATT POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LEFT END OF DASH) BRAKE APPLY SENSOR CONTROL BRAKE APPLY SENSOR SIG BRAKE PEDAL POSITION SENSOR BRAKE POSITION SENSOR BRN/GRN WIRE BRN/WHT WIRE CARGO BED LAMP CONTROL CARGO LAMP SW SIG COMPUTER DATA LINES SYSTEM DRIVER OUTSIDE REAR VIEW MIRROR PUDDLE LAMP CONTROL PUDDLE LAMP CONTROL ENGINE CONTROL ENGINE CONTROL MODULE ENGINE CONTROL SENS LO REF 3 GMLAN DATA - (1) GRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE HAZARD SW LT TURN SIG HAZARD SW RT TURN SIG HAZARD SW SIG HEADLAMP SW PARK LAMP SIG HOT AT ALL TIMES LAMP RELAY CONTROL LEFT LICENSE PLATE LAMP LF TURN SIG LAMP CONTROL LICENSE PLATE LAMP LR STOP/TURN LAMP CONTROL PARK LAMP RELAY CONTROL POLICE SELECT SUPPLY VOLT 4 PUDDLE LAMP CONTROL REAR LICENSE LAMP CONTROL RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RF TURN SIG LAMP CONTROL RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT LICENSE PLATE LAMP RR STOP/TURN LAMP CONTROL SENS LO REF SER DATA (-) (1) STOP LAMP RELAY CONTROL TURN SIGNAL/ MULTI-FUNCTION SWITCH VEHICLE STABILITY CONTROL SWITCH VIO/BLU WIRE VIO/WHT WIRE VIO/YEL WIRE W/ FLEETSIDE PICK-UP BOX W/O FLEETSIDE PICK-UP BOX WHT WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE

BACKUP LAMPS CIRCUIT BLK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/GRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRANK DATA 2 (+) DRIVER INFORMATION CENTER DISPLAY GMLAN GRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IGN INSTRUMENT CLUSTER LEFT BACKUP LAMP LEFT LOWER TAIL/STOP, TURN SIGNAL LAMP LEFT REAR SIDE MARKER LAMP LEFT TAIL LAMP ASSEMBLY LEFT TURN IND LEFT UPPER TAIL/STOP, TURN SIGNAL LAMP LO SPD LOGIC PARKS LAMPS IND RED WIRE RED/BRN WIRE RED/GRY WIRE RED/WHT WIRE RIGHT BACKUP LAMP RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT LOWER TAIL/STOP, TURN SIGNAL LAMP RIGHT REAR SIDE MARKER LAMP RIGHT TAIL LAMP ASSEMBLY RIGHT TURN IND RIGHT UPPER TAIL/STOP, TURN SIGNAL LAMP RUN/ SER VIO/BLK WIRE VIO/GRY WIRE VIO/WHT WIRE VIO/YEL WIRE W/O DRIVER INFO ENHANCED DISPLAY INSTRUMENT WHT WIRE WHT/VIO WIRE YEL/BLK WIRE YEL/BLU WIRE

8 WAY BATT POS VOLT 51 BATT POS VOLT 61 BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BODY CTRL MODULE LIN BUS 2 BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/VIO WIRE CO-DRV HEATED BACK THERMISTOR LO REF CO-DRV HEATED SEAT THERMISTOR LO REF COMPUTER DATA LINES SYSTEM DRIVER CUSHION HEATED SEAT SWITCH DRIVER VENTILATED HEATED SEAT SWITCH DRV HEATED BACK THERMISTOR LO REF DRV HEATED SEAT THERMISTOR LO REF DRV SEAT BACK HEATING ELEMENT CTRL DRV SEAT BACK HEATING TEMPERATURE SENS SIG DRV SEAT BLOWER MOTOR CTRL 1 DRV SEAT HEATING ELEMENT CTRL DRV SEAT HEATING ELEMENT LO REF DRV SEAT HEATING TEMPERATURE SENS SIG EXCEPT 8 WAY FRONT SEAT HEATING CONTROL MODULE (UNDER FRONT OF PASSENGER SEAT) GND 12 GRN WIRE GRN/BLU WIRE GRN/VIO WIRE GRY/BLK WIRE HIGH HEAT IND HOT AT ALL TIMES HVAC CONTROLS LEFT CUSHION/BACK HEATED SEAT SWITCH LEFT INSTRUMENT PANEL FUSE BLOCK LOGIC LOW HEAT IND MED HEAT IND PASS SEAT BACK HEATING ELEMENT CTRL PASS SEAT BACK HEATING TEMPERATURE SENS SIG PASS SEAT BLOWER MOTOR CTRL 1 PASS SEAT HEATING ELEMENT CTRL PASS SEAT HEATING ELEMENT LO REF PASS SEAT HEATING TEMPERATURE SENS SIG PASSENGER CUSHION HEATED SEAT SWITCH PASSENGER VENTILATED HEATED SEAT SWITCH RED WIRE RED/GRN WIRE RIGHT CUSHION/BACK HEATED SEAT SWITCH WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRY WIRE YEL/GRY WIRE

BATT POS VOLT BLK WIRE BLK/GRN WIRE BLK/WHT WIRE BRN/BLU WIRE BUS 7 (-) CABLE) COMPUTER DATA LINES SYSTEM GRN/BLK WIRE GRY/GRN WIRE GY LVDS SIGNALING CABLE HEAD-UP DISPLAY HEAD-UP DISPLAY SWITCH HEADLAMP ON HOT AT ALL TIMES HUD HUD SW LOW REF HUD SW SIG INFO LIN BUS 1 LOGIC INSTRUMENT CLUSTER LVDS RED/WHT WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SER DATA (+) 2 SIGNALING WHT WIRE YEL WIRE YEL/WHT WIRE

6.6L TURBO DIESEL AJAR SW SIG AMBT AIR SENS SIG AMBT AIR TEMP SENS LOW REF BLK WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BODY CONTROL MODULE (UNDER LEFT SIDE OF DASH) BRN/BLU WIRE BRN/GRN WIRE COMPUTER DATA LINES SYSTEM DRIVER DOOR LATCH ASSEMBLY ENGINE CONTROL MODULE ENGINE CONTROLS SYSTEM ENGINE OIL LEVEL SWITCH ENGINE OIL PRESSURE CONTROL SOLENOID VALVE ENGINE OIL PRESSURE SENSOR ENGINE OIL TEMPERATURE SENSOR GMLAN SERIAL DATA GRN/GRY WIRE GRN/YEL WIRE GRY WIRE HI SPD GMLAN SERIAL DATA LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR WINDOW SWITCH LF DR AJAR LIN BUS 3 LIN BUS 4 LOGIC LOGIC DRIVER WINDOW MOTOR LOGIC RIGHT REAR WINDOW SWITCH LR DR MIRROR AMBIENT AIR TEMPERATURE SENSOR OIL LEVEL SW SIG OIL PRESSURE SENS 5 VOLT REF OIL PRESSURE SENS LOW REF 1 OIL PRESSURE SENS SIG OIL PUMP CTRL OIL TEMP SENS SIG PASSENGER DOOR LATCH ASSEMBLY PASSENGER WINDOW SWITCH PNK LF DR AJAR SW SIG WIRE PNK WIRE PRK BRK SW RF DR RF DR AJAR SW SIG RIGHT REAR DOOR LATCH ASSEMBLY (CREW CAB, DOUBLE CAB) (REAR OF RIGHT REAR DOOR) RR DR - SW SIG VIO/BLU WIRE W/ POWER OPERATED WINDOW W/0 EXPRESS UP/DOWN W/ POWER OPERATED WINDOW, EXPRESS UP/DOWN W/O POWER OPERATED WINDOW WHT WIRE WHT/RED WIRE YEL/BRN WIRE

AJAR SW SIG BATT POS VOLT 4 BLK WIRE BLK/GRN WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/VIO WIRE BLU/WHT WIRE BRAKE FLUID LEVEL SWITCH BRK FLUID LVL SENS SIG BRN WIRE COMPUTER DATA LINES SYSTEM ELECTRONIC BRAKE CONTROL MODULE (BEHIND UNDERHOOD FUSE BLOCK) FUEL PUMP DRIVER CONTROL MODULE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/RED WIRE HI SPD GMLAN SER DATA (+) 1 HOT AT ALL TIMES HOT W/ IGNITION RELAY ENERGIZED LEVEL SENS SIG LIN BUS 3 LOGIC LOW REF 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 PASSENGER WINDOW MOTOR PRIMARY FUEL LEVEL SENSOR PRIMARY FUEL PUMP, LEVEL SENSOR ASSEMBLY RED/YEL WIRE RF DR SECONDARY FUEL LEVEL SENSOR SECONDARY FUEL PUMP, LEVEL SENSOR ASSEMBLY SERIAL DATA (-) 7 UNDERHOOD FUSE BLOCK VIO/BLU WIRE W/ DUAL TANK W/O DUAL TANK WHT WIRE YEL WIRE YEL/RED WIRE

AUDIO SIG MICROPHONE SIG BACKUP LAMP CONTROL BATT POS VOLT BK COAX XM/HD BK LVDS INFOTAINMENT DISPLAY SIG BK USB ANTENNA XM SIGNAL OG COAX COAX CAM SIG BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BRN/BLU WIRE BRN/WHT WIRE BUTTON SIG CAMERA SIG (-) COAX COMPUTER DATA LINES SYSTEM CU COAX ANTENNA XM SIG DIMMING CTRL ETHERNET BUS 4 (-) GND SIG GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/VIO WIRE GRY/WHT WIRE GRY/YEL WIRE HOT AT ALL TIMES LEFT FRONT DOOR SPEAKER LEFT FRONT MOBILE TELEPHONE MICROPHONE LEFT INSTRUMENT PANEL SPEAKER LEFT REAR DOOR SPEAKER LF SPEAKER (-) CTRL 1 LF SPEAKER SIG (-) 1 LH RR SPEAKER CTRL (+) LH RR SPEAKER SIG (-) RADIO DISPLAY TOUCH INTERRUPT REQUEST SIG LO SPEED GMLAN DATA 2 LVDS NAVIGATION SYSTEM NCA WIRE PWR SIG RADIO RADIO DSPY BACKLIGHT LO REF RADIO KEYPAD VOLTAGE REF RED/WHT WIRE RED/YEL WIRE REPLICATED SIG RF SPEAKER (-) CTRL 1 RF SPEAKER SIG (-) 1 RH RR SPEAKER CTRL (+) AUDIO LO REF MICROPHONE LO REF RH RR SPEAKER SIG (-) RIGHT FRONT DOOR SPEAKER RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT INSTRUMENT PANEL SPEAKER RIGHT REAR DOOR SPEAKER USB USB RECEPTACLE VIO/BLU WIRE VIO/WHT WIRE VOLUME DOWN VOLUME UP W/ ONSTAR W/O ONSTAR WHT WIRE WHT/BLU WIRE YEL WIRE YEL/BLK WIRE

AUDIO AMPLIFIER (ON REAR WALL OF PASSENGER COMPT) BATT POS VOLT BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/VIO WIRE BRN/BLK WIRE BRN/BLU WIRE COAX COMPUTER DATA LINES SYSTEM ETHERNET BUS 6 (-) GND 27 GRN WIRE GRN/BLK WIRE GRY/BLK WIRE GRY/GRN WIRE HOT AT ALL TIMES LEFT FRONT DOOR SPEAKER LEFT INSTRUMENT PANEL FUSE BLOCK LEFT INSTRUMENT PANEL SPEAKER LEFT REAR DOOR SPEAKER LEFT/REAR SUBWOOFER SPKR CTRL (+) LF SPKR LF SPKR 1 (-) LR SPKR NCA WIRE RED/YEL WIRE RF SPKR RF SPKR (-) 1 LEFT/REAR SUBWOOFER SPKR (-) LOW REF RF SPKR 1 (-) RIGHT FRONT DOOR SPEAKER RIGHT INSTRUMENT PANEL SPEAKER RIGHT REAR DOOR SPEAKER RR SPKR SERIAL DATA 2 SUBWOOFER SPEAKER WHT WIRE WHT/YEL WIRE WLAN WIRELESS COMMUNICATION ANTENNA YEL WIRE YEL/BLK WIRE

AUDIO SIG (-) CTRL BATT POSITIVE VOLT BK USB AM/FM ANT SIG BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN/BLK WIRE BRN/BLU WIRE COAX COMPUTER DATA LINES SYSTEM CU COAX XM ETHERNET BUS 4 (-) ETHERNET BUS 6 (-) ETHERNET BUS 7 (-) GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/WHT WIRE GRY/YEL WIRE GY LVDS DISPLAY SIG HOT AT ALL TIMES LEFT FRONT DOOR SPEAKER LEFT INSTRUMENT PANEL SPEAKER LEFT REAR DOOR SPEAKER LF SPEAKER (-) CTRL 1 LF SPEAKER 1 (+) CTRL LOW SPEED GMLAN SERIAL DATA 2 LR (-) CTRL AUDIO SIG LR SPEAKER (+) CTRL LVDS MICROPHONE MICROPHONE SIG RADIO RED/BLU WIRE RED/YEL WIRE RF SPEAKER (-) CTRL 1 RF SPEAKER 1 (+) CTRL RF SPEAKER CTRL (+) RIGHT FRONT DOOR SPEAKER RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT INSTRUMENT PANEL SPEAKER RIGHT REAR DOOR SPEAKER RR SPEAKER (+) CTRL SERIAL DATA (-) 9 SERIAL DATA (-) 9 BACKUP LAMP CTRL SERIAL DATA COMMUNICATION ENABLE USB VIO/YEL WIRE W/ DIGITAL AUDIO SYSTEM WHT WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE