Chevrolet Tahoe IV (2014-2021) computer data lines system Wiring diagrams

5 VOLT REF 6.0L (VIN G) ACC VOLT ACC WAKEUP SERIAL DATA SERIAL DATA COMMUNICATION ENABLE AHA RVC FUSE AMBIENT LT SENS SIG ANTI-LOCK BRAKES SYSTEM ANTI-LOCK BRAKES, HEADLIGHTS SYSTEMS ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM CRUISE CONTROL SYSTEM AUTO WIPER ON SIG BATT POSITIVE VOLT BATT POSITIVE VOLTAGE BCM 1 FUSE BCM 2 FUSE BCM 3 FUSE BCM 4 FUSE BCM 5 FUSE BCM 8 FUSE BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/WHT WIRE BRN/YEL WIRE CHALLENGE ACTIVE SIG CHILD LOCKOUT INDICATOR COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CRUISE CTRL SET/COAST/ RESUME/ACCELERATE SW SIG LO REF CURRENT SENS CTRL CURRENT SENS SIG DK BLU/VIO WIRE DOOR LOCK CTRL DOOR LOCKS, ANTI-THEFT SYSTEMS DRV DR LK SW LK SIG DRV DR LK SW UNLK EXCEPT 6.0L (VIN G) EXTERIOR LIGHTS, HEADLIGHTS SYSTEMS GLOVE BOX DOOR RELEASE SIG GRN/BRN 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/RED WIRE GRY/VIO WIRE GRY/WHT WIRE GRY/YEL WIRE HAZARD SW LT TURN SIG HAZARD SW RH TURN SIG HAZARD SW SIG HDLP DIMM SW HI BEAM SIG HDLP SW HDLPS OFF SIG CTRL HDLP SW ON SIG HDLP SW PARK LP SIG HEADLIGHTS SYSTEM HI SPD GMLAN SERIAL DATA (+) (1) REMOTE FUNCTION ACTR RECEIVE SIG HI SPD GMLAN SERIAL DATA (-) (1) HILL DESCENT CTRL SW SIG HOOD AJAR SW SIG HORN SW SIG HORNS SYSTEM HOT AT ALL TIMES I/P LP DIM SW SIG I/P LP DIMM SW LOW REF IGN MODE SW ACC LED SIG IGN MODE SW MODE VOLT IGN MODE SW ST LED SIG IGNITION KEY RESISTOR SIG IND DIMMING CTRL INTERIOR LIGHTS SYSTEM 192 (OR 6841) INTR LP DEFEAT SW SIG LED AMBIENT LIGHTING CTRL 2 LED BACKLIGHT DIMM CTRL LEFT INSTRUMENT PANEL FUSE BLOCK LEFT REAR STP LP CTRL LIFT GLASS/TRUNK MOTOR CTRL LIN BUS 4 LT FRT DRL CTRL LT HDL LO BEAM SPL VOLT NETWORK BUS 5 ORG/ WIRE PARK BRAKE SW SIG POWER DISTRIBUTION SYSTEM RAP RELAY COIL CTRL REAR WINDOW WIPER SW SIG RED/BLU WIRE RED/BRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE REMOTE FUNCTION ACTR RTN REMOTE FUNCTION ACTR SUPLY VOLT REMOTE FUNCTION ACTR TRANS SIG RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT REAR STP LP CTRL RR FOG LP SW SIG RR LICENSE LP SPLY VOL RT FRT TRN SIG LP CTRL RT HDL LO BEAM SPL VOLT RT RR TURN SIG LP CTRL RUN/CRANK IGN 1 VOLT RUN/CRANK RLY COIL CTRL SECURITY IND CTRL SENS LO REF SHIFT INTERLOCK SYSTEM SHIFT SELECT SW PERFORMANCE SIG STARTING/CHARGING SYSTEM STOP LAMP RLY COIL CTRL STOP LAMP SW SIG STRG COLUMN LK STATUS SIG SW SIG TAP UP/TAP DOWN SW SIG TRACTION CTRL SW SIG TRAILER BRK APPLY SIG TRANSMISSIONS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM UNDERHOOD FUSE BLOCK VEH ANTI-THEFT SYS IMMOBILIZER RTRN LIN BUS 11 VEH ANTI-THEFT SYS IMMOBILIZER SPLY VOLT 12 VOLT REF VIO/BLK WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE WHT/YEL WIRE WINDSHIELD WASHER RLY CTRL WINDSHIELD WASHER SW SIG WINDSHIELD WIPER MTR RLY COIL CTRL WINDSHIELD WIPER MTR PARK SW SIG WINDSHIELD WIPER SW HI SIG WINDSHIELD WPR SW LO SIG WIPER/WASHER SYSTEM YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/GRY WIRE

ACC VOLT BACKUP LMP RLY CTRL BATT POSITIVE VOLT BCM 6 FUSE BCM 7 FUSE BLK WIRE BLK/VIO WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/VIO WIRE BLU/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CHILD SECURITY LK MTR STATUS SIG LR SHIFT SELECT SW PARK SIG CHILD SECURITY LK MTR STATUS SIG RR COURTESY LP SW SIG CHILD SECURITY LK RLY CTRL COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CRUISE/ETC/TCC BRAKE SIG CURRENT SENS LO REF DEFOGGER SYSTEM DOOR LOCKS, ANTI-THEFT SYSTEMS DOOR LOCKS, ANTI-THEFT SYSTEMS INTERIOR LIGHTS SYSTEM DR LK ACTR UNLCK CTRL DR LK CTRL DR LK CTRL 2 DRIVER MODE SW SIG DRV OUTSIDE RR VIEW MIR PUDDLE LP SPLY VOLT DRV SEAT VENT MTR CTRL 1 ELECTRONIC SUSPENSION SYSTEM ENDGATE LATCH RLY SPLY VOLT EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM WIPER/WASHER SYSTEM FOG LMP RLY CTRL FOG LP RLY COIL CTRL GLASS BREAKAGE SENSOR SIG 2 GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE HDLP HI BEAM RLY CTRL HDLP LO BEAM RLY CONTROL HEADLIGHTS SYSTEM HI SPD GMLAN SER DATA (+) 1 HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES IGNITION SWITCH INADVERTENT POWER CTRL INTR LP CTRL KEY-IN IGNITION SWITCH KEYLESS ENTRY CONTROL MODULE LATCH RLY COIL CTRL LED AMBIENT LIGHTING CTRL 1 LED BACKLIGHT DIMM CTRL LEFT CORNERING LAMP SPLY VOLT LEFT HDLP BULB OUTAGE SIG LEFT TAIL LP OUTAGE DETECTION SIG LF TURN SIG CTRL LIFT GLASS/TRUNK RELEASE SIG LIN BUS 2 LIN BUS 3 LO SPD GMLAN SERIAL DATA LR TURN LMP CTRL LT TRAILER TURN SIG LAMP LTFTGATE AJAR SW SIG (1) NETWORK BUS 1 OFF OUT OF PARK SIG FT WINDSHIELD WIPER SW HI SIG PARK LMP RLY CTRL PASS DR LOCK SW LCK CTRL PASS DR LOCK SW UNLCK CTRL WIRELESS CHARGING SYSTEM CHARGE INDICATOR CTRL PASS SEAT VENT MOTOR CTRL 1 POWER DISTRIBUTION SYSTEM REAR CLOSURE HANDLE SW OPEN SIG CHILD SECURITY LOCK SW SIG RED/GRN WIRE RED/WHT WIRE RIGHT CORNERING LP CTRL RIGHT HDLP BULB OUTAGE SIG RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT TAIL LP OUTAGE DETECTION RIGHT TRAILER TURN SIG LAMP RR WINDOW WASHER RLY CTRL RT FRT DRL SPLY VOLT RUN IGNITION 3 VOLTAGE RUN WIRE RUN/CRANK IGN 1 VOLT SEATS SYSTEM SECURITY LK RLY CTRL SHIFT INTERLOCK SOLENOID CTRL SHIFT INTERLOCK SYSTEM STARTING/CHARGING SYSTEM TRAILER BRK APPLY SIG TRUNK, TAILGATE, FUEL DOORS SYSTEM VIO/BLK WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/GRY WIRE VIO/WHT WIRE VIO/YEL WIRE W/ KEYLESS ENGINE START SWITCH W/O KEYLESS ENGINE START SWITCH WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/VIO WIRE WHT/YEL WIRE WIPER/WASHER SYSTEM YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRY WIRE YEL/VIO WIRE YEL/WHT WIRE

12 VOLT REF 6.0L 6.2L, 5.3L 6.2L, 5.3L 6.0L APP 5 VOLT REF 2 APP SENS 5 VOLT REF 1 APP SENS LO REF 1 APP SENS LOW REF 2 APP SENS SIG (2) APP SENS SIG 1 BATT POS VOLT BCM 5 FUSE BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRAKE PEDAL POSITION SENSOR (BEHIND BRAKE PEDAL ASSEMBLY) BRK APPLY SENS LO REF BRK APPLY SENS SIG BRK APPLY SENS SUPPLY VOLT BRK SENS LOW REF BRK SENS SIG BRK SENS SPLY VOLT BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE COMMUNICATION ENABLE COMPUTER DATA LINES SYSTEM CRUISE CTRL SW SIG CRUISE GAP SW SIG CRUISE IND CRUISE/ETC/ TCC BRK SIG DISTANCE SENSING CRUISE CONTROL MODULE (LEFT SIDE BOTTOM OF FRONT FASCIA) DRIVER INFORMATION CENTER DISPLAY ECM IGN FUSE ENGINE CONTROL MODULE (LEFT OF ENGINE COMPT) GRN/WHT WIRE GRY/GRN WIRE GRY/RED WIRE HOT AT ALL TIMES HOT W/ ENGINE CONTROL MODULE WAKE-UP RELAY ENERGIZED HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT CLUSTER INSTRUMENT PANEL JUNCTION BLOCK IPC FUSE LEFT INSTRUMENT PANEL FUSE BLOCK LOGIC LOW SPD GMLAN SERIAL DATA PRIME RELAY FUSE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RUN/CRANK IGN 1 VOLT SERIAL DATA SERIAL DATA (-) (1) SERIAL DATA 2 SIG GND THR POS CTRL CLOSE THR POS CTRL OPEN THR POS SENS 5 VOLT REF THR POS SENS LOW REF TP SENS SIG UNDERHOOD FUSE BLOCK USB/OBS DET FUSE VIO/GRN WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/WHT WIRE

6 SPEED A/T ACCELERATOR PEDAL POSITION SENSOR AUTOMATIC TRANSMISSION ASSEMBLY BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/VIO WIRE BLU WIRE BLU/WHT WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CANCEL SWITCH CHEVROLET/GMC CADILLAC COMPUTER DATA LINES SYSTEM CRUISE SWITCH GAP SWITCH GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/ORG WIRE IN SPD SIG LEFT STEERING WHEEL CONTROLS SWITCH OUT SPD SIG RED WIRE RES+ SERIAL DATA (-) (1) SET- SPD SIG STEERING WHEEL AIR BAG COIL TRANS INTERMEDIATE TRANS SENS A TRANS SENS B TRANSMISSION CONTROL MODULE (8 SPEED A/T) (NEAR BRAKE MASTER CYLINDER) TRANSMISSION INPUT SHAFT SPEED SENSOR TRANSMISSION INTERMEDIATE SHAFT SPEED SENSOR TRANSMISSION OUTPUT SHAFT SPEED SENSOR TRANSMISSIONS SYSTEM WHT WIRE WHT/RED WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/WHT WIRE

5 VOLT REF ABOVE A/C COMPRESSOR) BATTERY FUSE BLOCK BATTERY POSITIVE VOLT BLK WIRE BLK/GRN WIRE BLK/ORG WIRE BLK/WHT WIRE BLU WIRE BLU/GRN WIRE BLU/YEL WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ELECTRONIC BRAKE CONTROL MODULE FUSE 4 GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRY WIRE HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (2) HOT AT ALL TIMES INSTRUMENT CLUSTER LO SPD GMLAN SERIAL DATA 2 LOGIC LOW REF POWER STEERING CONTROL MODULE (POWER STEERING RACK ASSEMBLY) POWER STEERING MOTOR POWER STEERING SHAFT TORQUE/ POSITION SENSOR RED WIRE RED/VIO WIRE SCL SDA SER DATA COMM ENABLE SIG GND SPLY VOLT STEERING WHEEL ANGLE SENSOR TAN WIRE TOR IN 1 TOR IN 2 VIO WIRE VOLT WHT WIRE WHT/BRN WIRE YEL/GRN WIRE

APPLY SW SIG APPLY SW VOLT BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/VIO WIRE BLU/WHT WIRE BRN WIRE COMM ENABLE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ELEC PRK BRK FUSE GROUND GRY/GRN WIRE GRY/RED WIRE HI SPD GMLAN HOT AT ALL TIMES INSTRUMENT CLUSTER LOGIC LOW SPEED GMLAN SERIAL DATA PARK BRAKE CONTROL MODULE PARK BRAKE CONTROL SWITCH PARK BRAKE SERVICE IND PARK BRAKE SW PARK IND RED WIRE RED/WHT WIRE RELEASE SW RELEASE SW SIG SUPPLY VOLTAGE UNDERHOOD FUSE BLOCK WHT WIRE WHT/BLU WIRE YEL WIRE YEL/RED WIRE

BATTERY POSITIVE VOLTAGE BLK WIRE BLU/BLK WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM DOWN SWITCH SIGNAL FORWARD SWITCH SIGNAL GRN WIRE GRN/WHT WIRE GROUND GRY/RED WIRE GRY/VIO WIRE HOT AT ALL TIMES LEFT INSTRUMENT PANEL FUSE BLOCK LINEAR INTERCONNECT NETWORK BUS 8 REARWARD SWITCH SIGNAL RED WIRE RED/VIO WIRE STEERING COLUMN POSITION CONTROL MODULE STEERING COLUMN TELESCOPE MOTOR STEERING COLUMN TILT MOTOR STEERING COLUMN TILT, TELESCOPE SWITCH TELESCOPE MOTOR FORWARD TELESCOPE MTR REARWARD TELESCOPE MTR RETURN TELESCOPE MTR SIGNAL TILT COL/SEO TILT COL LCK 1/SEO FUSE TILT MOTOR DOWN CONTROL TILT MOTOR RETURN TILT MOTOR SIGNAL TILT MOTOR UP CONTROL UP SWITCH SIGNAL VIO/GRY WIRE WHT WIRE YEL WIRE YEL/BLK WIRE YEL/BRN WIRE

1-VT 2 PU 2-BU 2-VT BATT POS VOLT BATTERY POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLU WIRE BLU/GRN WIRE CAMERA SIGNAL 2 CELLULAR PHONE NAVIGATION, DIGITAL RADIO ANTENNA COAX COMMUNICATION ENABLE COMPUTER DATA LINES SYSTEM ENABLE SIG GMLAN SERIAL DATA (+) 9 GPS GPS/CELL GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/GRN WIRE GRY/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES HUMAN MACHINE INTERFACE CONTROL MODULE (BELOW PASSENGER'S AIR BAG) LO SPD GMLAN SER DATA LOW REF LVDS MICROPHONE/AUDIO MOST CONTROL MOST SER DATA (+) MOST SERIAL DATA (+) NAVIGATION ANTENNA SIGNAL SPLITTER NAVIGATION DISPLAY SIG NAVIGATION SYSTEM NETWORK BUS 5 RED WIRE RED/GRN WIRE RED/VIO WIRE REMOTE MEDIA EJECT SIG RIGHT INSTRUMENT PANEL FUSE BLOCK RSE FUSE SOUND SYSTEMS USB USB SERIAL DATA VIDEO SYSTEM CIRCUIT W/ ONSTAR W/O ONSTAR WHT/BLU WIRE WHT/GRN WIRE WHT/VIO WIRE

5.3L, 6.2L 5.3L, 6.2L 6.0L 6 SPEED A/T 6.0L 8 SPEED A/T AUTOMATIC TRANSMISSION ASSEMBLY BCM 7 FUSE BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/GRN WIRE BLU/YEL WIRE BODY CONTROL MODULE BRAKE PEDAL POSITION SENSOR COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DATA ECM FUSE ENGINE CONTROL MODULE GM LAN HI SPD SER GRN WIRE GRN/WHT WIRE GRY WIRE GRY/RED WIRE HI SPD SER DATA (-) 1 HOT AT ALL TIMES HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED IGN MODE IGNITION MODE SWITCH (W/ KEYLESS ACCESS) IGNITION SWITCH IMS MODE SW RETURN INSTRUMENT PANEL JUNCTION BLOCK KEY-IN IGNITION SWITCH LOW REF OFF OFF/ RUN/ CRANK/ VOLT P/N SIG PARK POSITION SWITCH PARK SOL SIG CTRL RED WIRE RELAY FUSED SPLY 1 RIGHT INSTRUMENT PANEL FUSE BLOCK RUN WIRE SEN SIG SEN SPLY VOLT STOP LAMP TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LOCK CONTROL SOLENOID ACTUATOR UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLU WIRE W/ KEYLESS ACCESS W/O KEYLESS ACCESS WHT WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/VIO WIRE YEL WIRE YEL/WHT WIRE

BATT POSITIVE VOLT BLK WIRE BLU WIRE BLU/VIO WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM DOOR OPEN SW SIG DRIVER DOOR LATCH ASSEMBLY GRN WIRE GRN/VIO WIRE GRY/WHT WIRE HI SPEED GMLAN SERIAL DATA (-) 1 HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT PANEL JUNCTION BLOCK KEYLESS ENTRY CONTROL MODULE LEFT INSTRUMENT PANEL FUSE BLOCK LO SPD GMLAN SER DATA LOGIC OFF/ACCESSORY VOLT RED/GRY WIRE STEERING COLUMN LOCK MODULE (STEERING COLUMN) STEERING COLUMN LOCK STATUS SIG STR COL LOCK SIG STRG COLUMN LOCK SIG WHT WIRE WHT/YEL WIRE