Chevrolet Tahoe IV (2014-2021) instrument panel junction block Wiring diagrams

AUDIO SIG + BATTERY POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLUETOOTH WIRELESS COMMUNICATION ANTENNA (WIRELESS INTERFACE) BRN WIRE CELL COAX COMPUTER DATA LINES SYSTEM DRAIN WIRE GMC/ CHEVROLET GPS/CELL GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/YEL WIRE INSTRUMENT PANEL COMPARTMENT USB RECEPTACLE INSTRUMENT PANEL JUNCTION BLOCK LOGIC USB RECEPTACLE LOW REF MOBILE TELEPHONE MICROPHONE NCA WIRE RED WIRE RED/GRN WIRE RED/VIO WIRE REMOTE MEDIA EJECT SIG SERIAL DATA SIG TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE USB VOICE LOW REF VOICE SIG W/ ONSTAR W/ REAR SEAT ENTERTAINMENT W/O REAR SEAT ENTERTAINMENT W/O FULL FEATURE CENTER W/O ONSTAR WHT WIRE WHT/GRN WIRE YEL WIRE

5.3L, 6.2L 5.3L, 6.2L 6.0L 6.0L 6.0L 6.0L AHA RVC FUSE BATTERY BATTERY CURRENT SENSOR BATTERY FUSE BLOCK BLK WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/VIO WIRE BODY CONTROL MODULE BRN WIRE CHARGE IND CHARGE IND CTRL COMPUTER DATA LINES SYSTEM CURRENT SENS LOW REF CURRENT SENS SIG CURRENT SENS SPLY VOLT DRIVER INFORMATION CENTER DISPLAY ECM/TCM FUSE ENGINE CONTROL MODULE FUSE 2 GENERATOR GENERATOR FIELD DUTY CYCLE SIG GRN WIRE GRY WIRE GRY/VIO WIRE HI SPD GMLAN SRL DATA (-) (1) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT CLUSTER INSTRUMENT PANEL JUNCTION BLOCK IPC IGN/ SDM IGN FUSE LEFT INSTRUMENT PANEL FUSE BLOCK LOGIC MOST SERIAL DATA (+) POWER DISTRIBUTION SYSTEM RED WIRE RED/BRN WIRE RED/YEL WIRE RUN/CRANK IGN 1 VOLT UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLK WIRE WHT WIRE WHT/GRN WIRE WHT/YEL WIRE YEL WIRE

5-VOLT REFERENCE AUTO BCM 1 FUSE BCM 3 FUSE BCM 5 FUSE BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/WHT WIRE BLU WIRE BLU/BRN WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BPP SENS CTRL BPP SENS LO REF BPP SENS SIG BRAKE PEDAL POSITION SENSOR BRN/GRN WIRE COMPUTER DATA LINES SYSTEM DRIVER OUTSIDE REAR VIEW MIRROR GLASS DRIVER OUTSIDE REAR- VIEW MIRROR DRL SPLY VOLTAGE ENGINE CONTROL MODULE (LEFT OF ENGINE COMPT) GMLAN DATA - (1) GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/RED WIRE GRY/YEL WIRE HAZARD HAZARD SW LT TURN SIG HAZARD SW RT TURN SIG HAZARD SWITCH SIGNAL HEAD HEADLAMP SWITCH HOT AT ALL TIMES INSTRUMENT PANEL JUNCTION BLOCK LAMP CTRL LEFT LEFT INSTRUMENT PANEL FUSE BLOCK LEFT LICENSE PLATE LAMP LEFT TURN SIGNAL REPEATER LAMP LF TURN SIG LAMP CTRL LP RLY CTRL LR STOP LAMP CTRL LR STOP/TURN LAMP CTRL LT FT DRL CTRL LT HDLP BULB OUTAGE SIG LT OUTAGE DETECTION SIG OFF PARK PARK LAMP RELAY CONTROL PARK LAMP SW SIG PASSENGER OUTSIDE REAR VIEW MIRROR PASSENGER OUTSIDE REAR VIEW MIRROR GLASS REAR LICENSE LP CTRL RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RF TURN SIG LAMP CTRL RIGHT RIGHT LICENSE PLATE LAMP RIGHT TURN SIGNAL REPEATER LAMP RR STOP LAMP CTRL RR STOP/TURN LAMP CTRL RT HDLP BULB OUTAGE SIG RT OUTAGE DETECTION SIG SENSOR LOW REFERENCE STOP LP RLY COIL CTRL STOP LP SWITCH SIGNAL TURN SIGNAL/MULTI-FUNCTION SWITCH VIO/BLU WIRE VIO/WHT WIRE VIO/YEL WIRE W/ REMOTE CONTROL MIRROR W/O REMOTE CONTROL MIRROR 5.3L, 6.2L 6.0L WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/YEL WIRE YEL/BLK WIRE YEL/BLU WIRE

BLK WIRE BLK/WHT WIRE BLU WIRE BLU/VIO WIRE BLU/WHT WIRE CHEVROLET GMC W/ LUXURY EDITION PACKAGE W/O LUXURY EDITION PACKAGE COMPUTER DATA LINES SYSTEM DATA 2 (+) DRIVER INFORMATION CENTER DISPLAY GMC GMLAN GRN WIRE GRY/BLU WIRE GRY/GRN WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT PANEL JUNCTION BLOCK IPC FUSE LEFT EXTERIOR SPOT LAMP LEFT FRONT PARK LAMP LEFT FRONT SIDE MARKER LAMP LEFT FRONT TURN SIGNAL LAMP LEFT HEADLAMP ASSEMBLY LEFT HEADLAMP MULTI-FUNCTION LED CONTROL MODULE LEFT INSTRUMENT PANEL FUSE BLOCK LEFT PARK DAYTIME RUNNING LAMP LEFT TURN IND LO SPD LOGIC NCA WIRE PARK LAMP IND POSITIVE RED WIRE RED/GRY WIRE RED/VIO WIRE RIGHT EXTERIOR SPOT LAMP RIGHT TURN IND SER SIG ND VIO/GRY WIRE VOLT YEL WIRE

AUDIO SIG + BATTERY POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BLUETOOTH WIRELESS COMMUNICATION ANTENNA (WIRELESS INTERFACE) BRN WIRE CELL COAX COMPUTER DATA LINES SYSTEM DRAIN WIRE GMC/ CHEVROLET GPS/CELL GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/YEL WIRE INSTRUMENT PANEL COMPARTMENT USB RECEPTACLE INSTRUMENT PANEL JUNCTION BLOCK LOGIC USB RECEPTACLE LOW REF MOBILE TELEPHONE MICROPHONE NCA WIRE RED WIRE RED/GRN WIRE RED/VIO WIRE REMOTE MEDIA EJECT SIG SERIAL DATA SIG TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE USB VOICE LOW REF VOICE SIG W/ ONSTAR W/ REAR SEAT ENTERTAINMENT W/O REAR SEAT ENTERTAINMENT W/O FULL FEATURE CENTER W/O ONSTAR WHT WIRE WHT/GRN WIRE YEL WIRE

AUDIO SIG + BATTERY POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BLUETOOTH WIRELESS COMMUNICATION ANTENNA (WIRELESS INTERFACE) BRN WIRE CELL COAX COMPUTER DATA LINES SYSTEM DRAIN WIRE GMC/ CHEVROLET GPS/CELL GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/YEL WIRE INSTRUMENT PANEL COMPARTMENT USB RECEPTACLE INSTRUMENT PANEL JUNCTION BLOCK LOGIC USB RECEPTACLE LOW REF MOBILE TELEPHONE MICROPHONE NCA WIRE RED WIRE RED/GRN WIRE RED/VIO WIRE REMOTE MEDIA EJECT SIG SERIAL DATA SIG USB VOICE LOW REF VOICE SIG W/ ONSTAR W/ REAR SEAT ENTERTAINMENT W/O REAR SEAT ENTERTAINMENT W/O FULL FEATURE CENTER W/O ONSTAR WHT WIRE WHT/GRN WIRE YEL WIRE

AUDIO SIG + BATTERY POSITIVE VOLT BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BLUETOOTH WIRELESS COMMUNICATION ANTENNA (WIRELESS INTERFACE) CELL COAX COMPUTER DATA LINES SYSTEM DRAIN WIRE GMC/ CHEVROLET GPS/CELL GRN WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/YEL WIRE INSTRUMENT PANEL COMPARTMENT USB RECEPTACLE INSTRUMENT PANEL JUNCTION BLOCK LOGIC LOW REF MOBILE TELEPHONE MICROPHONE NCA WIRE RED WIRE RED/GRN WIRE RED/VIO WIRE REMOTE MEDIA EJECT SIG SERIAL DATA SIG TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE USB USB RECEPTACLE VOICE LOW REF VOICE SIG W/ ONSTAR W/ REAR SEAT ENTERTAINMENT W/O REAR SEAT ENTERTAINMENT W/O FULL FEATURE CENTER W/O ONSTAR WHT WIRE WHT/GRN WIRE YEL WIRE

5.3L 5.3L, 6.2L 6 SPEED A/T 8 SPEED A/T 5.3L, 6.2L 6.0L 6.0L AUTOMATIC TRANSMISSION ASSEMBLY BATTERY BATTERY CURRENT SENSOR BATTERY FUSE BLOCK BLK WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/GRN WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY ECM IGN FUSE ENGINE CONTROL MODULE (LEFT OF ENGINE COMPT) FUSE 2 GMLAN SERIAL DATA - 1 GRY WIRE HOT W/ IGNITION MAIN RELAY ENERGIZED IGN KEY SIG IGN MODE SW IGNITION MODE SWITCH IGNITION SWITCH INSTRUMENT PANEL JUNCTION BLOCK J126 (5.3L) J127 (6.0L) OFF OFF/RUN/CRANK VOLT RED WIRE RED/GRN WIRE RED/YEL WIRE RUN WIRE RUN/CRANK IGN 1 VOLT STARTER ENABLE RELAY CTRL STARTER MOTOR STARTER RELAY STRTR FUSE TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION PARK/ NEUTRAL SIGNAL 1 UNDERHOOD FUSE BLOCK VIO/GRN WIRE WHT WIRE WHT/BLK WIRE WHT/GRY WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE

AUDIO DRAIN WIRE AUDIO SIG LH (-) AUDIO SIG RH (-) AUDIO/VIDEO INPUT ADAPTER AUXILIARY AUDIO TRANSMITTER ANTENNA BATT POS VOLT BATT POSITIVE VOLT BLK WIRE BLK/WHT WIRE BLU/VIO WIRE BRN WIRE BRN/BLU WIRE BRN/GRY WIRE BRN/WHT WIRE COMMON SIG COMPUTER DATA LINES SYSTEM DISPLAY SIG + ENABLE SIG ENTERTAINMENT GRN/WHT WIRE GRN/YEL WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL JUNCTION BLOCK LH AUDIO SIG LOGIC LVDS MEDIA DISC EJECT SWITCH (CADILLAC) NCA WIRE RDO FUSE RED/GRN WIRE RED/VIO WIRE REMOTE + REMOTE MEDIA EJECT SIG RH AUDIO SIG RIGHT INSTRUMENT PANEL FUSE BLOCK USB USB SERIAL DATA VIO/GRN WIRE WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/VIO WIRE YEL WIRE

ACC VOLT ANT SIG BLK WIRE CLK+ DRIVER SEAT HEADREST DVD PLAYER DVD CONTROL MODULE DVD RELAY (LEFT SIDE OF DASH) HOT AT ALL TIMES HOT W/ RETAINED ACCESSORY POWER RELAY 1 ENERGIZED IGN VOLT INSTRUMENT PANEL JUNCTION BLOCK L AUDIO (+) LEFT INSTRUMENT PANEL FUSE BLOCK PASSENGER SEAT HEADREST DVD PLAYER POWER DISTRIBUTION SYSTEM PPL R AUDIO (+) RED WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SEO RAP FUSE SERIAL DATA VIDEO DISPLAY FUSE HOLDER VIDEO SIG VIO/YEL WIRE WHT WIRE YEL WIRE