Chevrolet Tahoe IV (2014-2021) underhood fuse block Wiring diagrams

ABS PUMP FUSE ABS VLV FUSE BATT POS VOLT BLK WIRE BLK/BRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BRAKE FLUID LEVEL SENSOR SIG BRAKE FLUID LEVEL SWITCH BRAKE PRESSURE MODULATOR BRAKE VACUUM SENSOR 5 VOLT REF BRAKE VACUUM SENSOR LOW REF BRAKE VACUUM SENSOR SIG CMBD VHCE IN SENSOR SPLY VOLT COMPUTER DATA LINES SYSTEM ELECTRONIC BRAKE CONTROL MODULE (NEAR LEFT SIDE OF TRANSMISSION) GMLAN GRN/BRN WIRE GRN/GRY WIRE GROUND GRY WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/YEL WIRE HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (2) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT PANEL JUNCTION BLOCK IPC IGN/ SDM IGN FUSE LEFT FRONT WHEEL SPEED SENSOR LEFT INSTRUMENT PANEL FUSE BLOCK LEFT REAR WHEEL SPEED SENSOR LF FRONT WHEEL SPD SENSOR SIG LF WHEEL SPD SENSOR CTRL LR WHEEL SPD SENSOR SIG LR WHL SPD SENSOR CTRL NCA WIRE POLICE PROVISION (BLUNT CUT) POWER DISTRIBUTION SYSTEM RED/VIO WIRE RED/YEL WIRE RF WHEEL SPD SENSOR CTRL RF WHEEL SPD SENSOR SIG RR WHEEL SPD SENSOR SIG RR WHL SPD SENSOR CTRL SENSOR SERIAL DATA COMM ENABLE SPLY VOLT STEERING ANGLE SENSOR LOW REF STEERING WHEEL ANGLE SENSOR (BASE OF STEERING COLUMN) UNDERHOOD FUSE BLOCK VEHICLE SPEED SIG VIO WIRE VIO/BLK WIRE WHT WIRE WHT/BLU WIRE YEL WIRE YEL/RED WIRE YEL/VIO WIRE

5.3L, 6.2L 6.0L 6.0L 5.3L, 6.2L B+ VOLT BATT+ VOLT BLK WIRE BLK/BRN WIRE BLK/WHT WIRE BLU WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COOL FAN LT FUSE COOL FAN RT FUSE ENG COOLANT TEMP SENS SIG ENGINE CONTROL MODULE (LEFT OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE SENSOR HI SPD COOLING FAN RLY CTRL HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES LEFT COOLING FAN MOTOR LO REF RED/BRN WIRE RED/GRY WIRE RED/WHT WIRE RIGHT COOLING FAN MOTOR TCM/ECM FUSE UNDERHOOD FUSE BLOCK WHT WIRE

AUTOMATIC TRANSMISSION ASSEMBLY CONTROL SOLENOID VALVE ASSEMBLY BLK WIRE BODY CONTROL MODULE ENGINE CONTROL MODULE FROM BATTERY (DIAGRAM 10 OF 12) FRONT AXLE ENGAGEMENT ACTUATOR FUEL PUMP RELAY IGNITION COIL 1 IGNITION COIL 2 IGNITION COIL 3 IGNITION COIL 4 IGNITION COIL 5 IGNITION COIL 6 IGNITION COIL 7 IGNITION COIL 8 IGNITION MAIN RELAY INSTRUMENT PANEL JUNCTION BLOCK MULTI-FUNCTION INTAKE AIR SENSOR REAR WINDOW WASHER PUMP RELAY SECONDARY FUEL PUMP RELAY STARTER RELAY TRAILER BACKUP LAMPS RELAY TRANSFER CASE CONTROL MODULE UNDERHOOD FUSE BLOCK WHT WIRE WINDSHIELD WASHER PUMP RELAY WINDSHIELD WIPER MOTOR WINDSHIELD WIPER RELAY WINDSHIELD WIPER SPEED CONTROL RELAY

6 SPEED 8 SPEED ASSIST STEP CONTROL MODULE AUTOMATIC TRANSMISSION ASSEMBLY CONTROL SOLENOID VALVE ASSEMBLY AUXILIARY BATTERY RELAY 1 AUXILIARY BATTERY RELAY 2 BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE BRAKE FLUID LEVEL SWITCH CHEVROLET ELECTRONIC BRAKE CONTROL MODULE ENGINE CONTROL MODULE ENGINE OIL LEVEL SWITCH FRONT AXLE ENGAGEMENT ACTUATOR FUEL COMPOSITION SENSOR FUEL PUMP DRIVER CONTROL MODULE GMC GMC/ CHEVROLET IGNITION MAIN RELAY INSTRUMENT PANEL JUNCTION BLOCK LOGIC MULTI-FUNCTION INTAKE AIR SENSOR PARK BRAKE CONTROL MODULE PRIMARY FUEL PUMP, PRIMARY FUEL PUMP, LEVEL SENSOR ASSEMBLY REAR WINDOW WASHER PUMP RELAY RIGHT BACKUP LAMP RIGHT LOWER STOP/TURN SIGNAL LAMP RIGHT TAIL LAMP RIGHT TAIL LAMP ASSEMBLY RIGHT TAIL LAMP MULTI-FUNCTION LED CONTROL MODULE RIGHT UPPER STOP/TURN SIGNAL LAMP SECONDARY FUEL PUMP SECONDARY FUEL PUMP, LEVEL SENSOR ASSEMBLY STARTER RELAY TRAILER BACKUP LAMPS RELAY TRANSFER CASE CONTROL MODULE TRANSMISSION CONTROL MODULE UNDERHOOD FUSE BLOCK W/ POWER OPERATED PARKING BRAKE W/ SIDE POWER RUNNING BOARD WHT WIRE WINDSHIELD WASHER PUMP RELAY WINDSHIELD WIPER MOTOR WINDSHIELD WIPER RELAY WINDSHIELD WIPER SPEED CONTROL RELAY

AIR CONDITIONING SYSTEM AMBIENT LIGHT SENS SIG AMBIENT LIGHT/SUNLOAD SENSOR (DEFROSTER DEFLECTOR) BATT POS VOLT BATT POS VOLT REAR LAMP FLASHER SIG FRONT FOG LAMP SW SIG HDLP SW ON SIG BATTERY FUSE BLOCK BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/VIO WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN WIRE BRN/VIO WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM FOG LAMP RLY CTRL FOG LP FUSE FRONT FOG LAMP RELAY FTP FUSE 2 GMLAN SERIAL DATA - 1 GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GROUND DISTRIBUTION SYSTEM GRY/BLU WIRE HDLP DIMMER SW HI BEAM SIG HDLP HI BEAM RLY CTRL HDLP LO BEAM RLY CTRL HDLP OFF SIG CTRL HDLP SW FLASH TO PASS SIG HDLP SW PARK LAMP SIG HEADLAMP HIGH BEAM RELAY HEADLAMP LOW BEAM RELAY HOT AT ALL TIMES HVAC CONTROL MODULE LEFT HEADLAMP ASSEMBLY LEFT HEADLAMP BALLAST LEFT HEADLAMP MULTI-FUNCTION LED CONTROL MODULE LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LEFT PARK/DAYTIME RUNNING LAMP LF DRL CTRL LH HDLP LOW BEAM CTRL LOW REF LT HID FUSE LT/RT HI BEAM FUSE NCA WIRE PARK BRAKE SW SIG POWER DISTRIBUTION SYSTEM PPL RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/YEL WIRE RF DRL CTRL RH HDLP LOW BEAM CTRL RT HID FUSE TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK W/ FLASHER HEADLAMP W/ HID W/ HID W/O HID W/ FLASHER HEADLAMP W/O FLASHER HEADLAMP WHT WIRE WHT/BLU WIRE WHT/VIO WIRE YEL WIRE YEL/BRN WIRE

AUTO BCM 3 FUSE BCM 4 FUSE BLK WIRE BLK/WHT WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/VIO WIRE BRN/VIO WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY DRL IND FOG LAMP IND FOG LAMP SW GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GRY/GRN WIRE HEAD HEADLAMP SWITCH HIGH BEAM LAMP IND HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT PANEL JUNCTION BLOCK IPC FUSE LEFT FRONT FOG LAMP LEFT INSTRUMENT PANEL FUSE BLOCK LOGIC LOW SPD GMLAN SER DATA 2 OFF PARK PARK BRAKE SWITCH POLICE UPFIT FUSE PROVISION RED/BLU WIRE RED/GRY WIRE RIGHT FRONT FOG LAMP RIGHT INSTRUMENT PANEL FUSE BLOCK SIG GND UNDERHOOD FUSE BLOCK W/ FLASHER HEADLAMP W/O FLASHER HEADLAMP WHT WIRE WHT/VIO WIRE YEL WIRE

BLK WIRE BLK/WHT WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/VIO WIRE BLU/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DATA COM ELEC PRK BRK FUSE GRN WIRE GROUND DISTRIBUTION SYSTEM GRY/RED WIRE HOT AT ALL TIMES NCA WIRE PARK BRAKE CONTROL MODULE PARK BRAKE CONTROL SWITCH PPL RED/WHT WIRE RIGHT HEADLAMP ASSEMBLY RIGHT HEADLAMP BALLAST RIGHT HEADLAMP MULTI-FUNCTION LED CONTROL MODULE RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP RIGHT PARK/DAYTIME RUNNING LAMP SPLY VOLT SW SIG UNDERHOOD FUSE BLOCK VOLT REF W/ FLASHER HEADLAMP W/ HID W/ HID W/O HID WHT WIRE WHT/BLU WIRE YEL WIRE YEL/RED WIRE

BATTERY FUSE BLOCK BLK WIRE BODY CONTROL MODULE BRN WIRE BRN/WHT WIRE FUSE 2 GRN WIRE GRN/WHT WIRE GRY WIRE HORN HORN FUSE HORN RELAY HORN RLY CTRL HORN SW SIG HORN SWITCH HOT AT ALL TIMES RED WIRE STEERING WHEEL AIR BAG COIL UNDERHOOD FUSE BLOCK W/ HORN/SIREN CIRCUIT WIRING PROVISIONS WHT WIRE

BLK WIRE BLK/ORG WIRE BLU/RED WIRE BRN WIRE COMPUTER DATA FRONT PASSENGER SEAT CUSHION GRN WIRE HOT AT ALL TIMES INFO/ AIR BAG FUSE LEFT FRONT IMPACT SENSOR LEFT FRONT SIDE IMPACT SENSOR LEFT REAR SIDE IMPACT SENSOR LEFT ROOF RAIL AIR BAG LINES SYSTEM LO SPD GMLAN MSB DRVR FUSE MSB PASS FUSE NCA WIRE ORG/BLK WIRE ORG/BLU WIRE ORG/GRN WIRE ORG/YEL WIRE PASSENGER PRESENCE MODULE PASSENGER SEAT BELT RETRACTOR PRETENSIONER PASSENGER SEAT BELT TENSION SENSOR RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RIGHT FRONT IMPACT SENSOR RIGHT FRONT SIDE IMPACT SENSOR RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT REAR SIDE IMPACT SENSOR SENS SIG SENS VOL REF SHORTING BAR UNDERHOOD FUSE BLOCK VIO/ORG WIRE WHT WIRE

5 VOLT REF APPLY SIG AUXILIARY CHASSIS CONTROL MODULE BATT POS VOLT BLK WIRE BLK/BRN WIRE BLU WIRE BLU/RED WIRE BRK CTRL SIG BRK ENABLE SIG BRN WIRE ECM IGN FUSE GAIN SIG GRN/BLK WIRE GRN/VIO WIRE GROUND HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED ICCM FUSE IGNITION 1 VOLT INSTRUMENT PANEL JUNCTION BLOCK LIN SERIAL DATA BUS 14 LOW REF POWER DISTRIBUTION SYSTEM RED/GRN WIRE RED/WHT WIRE SPLY VOLT TRAILER BRAKE CONTROL SWITCH TRAILER BRAKE POWER CONTROL MODULE TRLR BRK FUSE UNDERHOOD FUSE BLOCK VIO/GRN WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE