Chevrolet Tahoe IV (2014-2021) engine control module (left of engine compt) Wiring diagrams

5 VOLT REF 6.0L 6.2L, 5.3L ABS IND. ABS/TCS HILL DESCENT CTRL SW SIG BATT POS VOLT BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/VIO WIRE BLU/YEL WIRE BODY CONTROL MODULE BRAKE APPLY SENSOR CTRL BRAKE APPLY SENSOR LOW REF BRAKE APPLY SENSOR SIG BRAKE BOOSTER VACUUM SENSOR BRAKE IND BRAKE PEDAL POSITION SENSOR BRN/WHT WIRE CHEVROLET/ GMC COMPUTER DATA LINES SYSTEM DISABLE SIG DISABLE SW SIG DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE (LEFT OF ENGINE COMPT) ESC IND ESC OFF IND GMLAN DATA - (1) GMLAN SERIAL DATA GRN WIRE GRY WIRE GRY/BRN WIRE GRY/RED WIRE GRY/YEL WIRE HI SPD GMLAN SERIAL DATA (-) (1) HILL DESCENT CONTROL SWITCH HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT PANEL JUNCTION BLOCK INSTRUMENT PANEL MULTI- FUNCTION SWITCH INSTRUMENT PANEL MULTI-FUNCTION SWITCH 2 LOGIC LOGIC ASSIST STEP CONTROL MODULE NCA WIRE PARK BRAKE SWITCH PARKING ASSIST CONTROL MODULE PRK BRK SW SIG RED WIRE RED/GRN WIRE RIGHT FRONT WHEEL SPEED SENSOR RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT REAR WHEEL SPEED SENSOR RSE FUSE SENS LOW REF SERIAL DATA 2 STOP LAMP SW SIG TRACTION CONTROL OFF IND TRACTION CONTROL OFF SWITCH TRACTION SW SIG 1 VIO WIRE VIO/BLK WIRE WHT WIRE WHT/GRN WIRE YEL WIRE YEL/RED WIRE YEL/VIO WIRE

ACC WAKEUP SER DATA AUTOMATIC TRANSMISSION ASSEMBLY B+ 5 6 GND BLK WIRE BLK/WHT WIRE BLU WIRE BLU/GRY WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DATA DRIVER INFORMATION CENTER DISPLAY ECM/TCM FUSE ENGINE CONTROL MODULE (LEFT OF ENGINE COMPT) GMLAN SERIAL DATA - 1 GRN WIRE GRY WIRE GRY/VIO WIRE HI SPD GMLAN SERIAL DATA BUS (+) 1 HI SPD GMLAN SERIAL DATA BUS (-) 1 IGNITION 1 VOLTAGE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IGN INSTRUMENT CLUSTER LEFT INSTRUMENT PANEL FUSE BLOCK LOGIC NCA WIRE O/P SPD HI INPUT SIG O/P SPD HIGH INPUT SIG OUT OF PARK SIG P/N PARK/NEUTRAL SIG PARK/NEUTRAL SIG (1) PC 1 SOLENOID PC 2 SOLENOID PC 3 SOLENOID PC 4 SOLENOID PC 5 SOLENOID POWER DISTRIBUTION SYSTEM PRESSURE CONTROL SOLENOID VALVE 1 PRESSURE CONTROL SOLENOID VALVE 2 PRESSURE CONTROL SOLENOID VALVE 3 PRESSURE CONTROL SOLENOID VALVE 4 PRESSURE CONTROL SOLENOID VALVE 5 PRK ENBL/EAP FUSE RED WIRE RED/GRN WIRE SEATS SYSTEM SHIFT SELECT SW PERFORMANCE SIG SHIFT SOLENOID VALVE 1 SHIFT SOLENOID VALVE 2 SIG A SIG B SIG C SIG P SS 1 SS 2 TAP UP/TAP DOWN SW SIG TCC SOLENOID TFP 1 TFP 3 TFP 4 TFP 5 TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID VALVE TOW/HAUL MODE SWITCH TRANS IGN FUSE TRANSMISSION CONTROL MODULE TRANSMISSION FLUID PRESSURE SWITCH TRANSMISSION FLUID TEMPERATURE SENSOR TRANSMISSION INPUT SHAFT SPEED SENSOR TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION MANUAL SHIFT SWITCH UP/DOWN TRANSMISSION SHIFT LEVER TRANSMISSION OUTPUT SHAFT SPEED SENSOR TRANSMISSION PARK POSITION RELAY UNDERHOOD FUSE BLOCK VIO/BLK WIRE VIO/YEL WIRE WHT WIRE WHT/GRN WIRE WHT/GRY WIRE YEL WIRE YEL/BLK WIRE

6.2L AUTOMATIC TRANSMISSION ASSEMBLY BACKUP LP RLY CTRL BACKUP LP SPLY VOLT BATT POS VOLT BATTERY FUSE BLOCK BCK UP LP FUSE BCM 5 FUSE BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BRN WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) CHEVROLET, GMC CADILLAC W/ REAR VIEW CAMERA W/O REAR VIEW CAMERA 5.3L, 6.2L 6.0L COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY ENGINE CONTROL MODULE (LEFT OF ENGINE COMPT) FUSE 2 GMLAN SER DATA - (1) GRN WIRE GRN/RED WIRE GRN/WHT WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BRN WIRE GRY/WHT WIRE GRY/YEL WIRE HI SPD GMLAN SER DATA (+) 1 HOT AT ALL TIMES IMS MODE SWITCH LOW REF INSIDE REAR VIEW MIRROR INSTRUMENT PANEL JUNCTION BLOCK LEFT BACKUP LAMP LEFT INSTRUMENT PANEL FUSE BLOCK LEFT TAIL LAMP ASSEMBLY PARK/NEUTRAL SIG (1) POWER DISTRIBUTION SYSTEM PPL PRNDL B SIGNAL PRNDL C SIGNAL PRNDL P SIGNAL TRANSMISSION POS SENSOR PRNDL S SIGNAL PRNDL A SIGNAL REAR VIEW CAMERA RED WIRE RED/BRN WIRE RED/GRN WIRE RED/YEL WIRE REV LP FUSE RIGHT BACKUP LAMP RIGHT TAIL LAMP ASSEMBLY SIG A SIG B SIG C SIG P TRAILER BACKUP LAMPS RELAY TRAILER CONNECTOR TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION POS SENSOR TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/GRY WIRE YEL WIRE YEL/BLU WIRE YEL/GRN 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

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

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

5.3L, 6.2L 5.3L, 6.2L 6.0L 6.0L AJAR SW SIG AJAR SW SIG 1 AMBIENT AIR TEMP SENS SIG AMBIENT AIR TEMPERATURE SENSOR BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRAKE FLUID LEVEL SWITCH BRK FLUID LEVEL BRN/GRN WIRE COMPUTER DATA LINES SYSTEM DRIVER DOOR LATCH ASSEMBLY DRIVER WINDOW MOTOR ELECTRONIC BRAKE CONTROL MODULE ENGINE CONTROL MODULE (LEFT OF ENGINE COMPT) ENGINE CONTROLS SYSTEM ENGINE OIL LEVEL SWITCH ENGINE OIL PRESSURE SENSOR FUEL LEVEL SENS SIG FUEL LEVEL SENSOR FUEL PRESS LOW REF FUEL PUMP, LEVEL SENSOR ASSEMBLY FUEL TANK ASSEMBLY GMLAN SERIAL DATA - 1 GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/WHT WIRE INSTRUMENT PANEL JUNCTION BLOCK LIFTGATE LATCH ASSEMBLY LIFTGATE WINDOW LATCH ASSEMBLY LOGIC LOGIC RIGHT REAR WINDOW SWITCH NETWORK BUS 3 NETWORK BUS 4 OIL LVL SW SIG OIL PRESS LO REF OIL PRESS SENS SIG PASSENGER DOOR LATCH ASSEMBLY PASSENGER WINDOW MOTOR PRK BRK SW RIGHT REAR DOOR LATCH ASSEMBLY SECONDARY FUEL LEVEL SENS SIG SECONDARY FUEL LEVEL SENSOR SECONDARY FUEL PUMP, LEVEL SENSOR ASSEMBLY VIO/GRY WIRE W/O POWER LIFTGATE WHT WIRE WHT/RED WIRE YEL/BRN 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

2-HI IND 4-HI IND 4-LO IND (2 SPEED) BLK WIRE BLK/GRN WIRE BLU WIRE BLU/GRY WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE (LEFT OF ENGINE COMPT) GRN/BLK WIRE GRY/GRN WIRE GRY/RED WIRE INSTRUMENT PANEL JUNCTION BLOCK NEUTRAL IND (2 SPEED) ORG/ WIRE RED WIRE RED/GRY WIRE SERIAL DATA (-) (1) TRANSFER CASE MOTOR TRANSFER CASE SHIFT CONTROL SWITCH TRANSFER CASE) VEH SPD SENS LOW REF VEH SPD SENS SIG VEHICLE SPEED SENSOR VIO WIRE VIO/BRN WIRE VIO/GRN WIRE VIO/WHT WIRE WHT WIRE WHT/GRN WIRE YEL WIRE YEL/BLU WIRE YEL/GRY WIRE YEL/VIO WIRE

"CHECK ENGINE" IND CTRL A/C CLUTCH RLY CTRL A/C PRESS LOW REF A/C REFRIGERANT PRESS SENS SIG A/C REFRIGERANT PRESSURE SENSOR ACCELERATOR PEDAL LOW REF 1 ACCELERATOR PEDAL LOW REF 2 ACCELERATOR PEDAL POS SIG 2 ACCELERATOR PEDAL POSITION SIG 1 AIR CONDITIONING SYSTEM AIR TEMPERATURE SENS SIG BATT POSITIVE VOLT BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BRAKE APPLY SENS SIG BRAKE APPLY SENS SPLY VOLT BRAKE PEDAL POSITION SENSOR BRAKE SENS LOW REF BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM CRUISE CONTROL SYSTEM CRUISE/ETC/TCC BRAKE SIG ENGINE CONTROL MODULE (LEFT OF ENGINE COMPT) EVAP CANISTER VENT SOL CTRL EVAPORATIVE EMISSION VENT SOLENOID VALVE FUEL LEVEL SENS SIG FUEL LINE PRESS SENS SIG FUEL PRESS LOW REF FUEL PRESSURE SENSOR FUEL PUMP CONTROLLER DATA OUT SIG FUEL RAIL PRESS SENS SIG FUEL TANK PRESS SENS SIG FUEL TEMPERATURE/COMPOSITION SIG FUSE SPLY 3 FUSED SPLY 1 FUSED SPLY 2 GMLAN SER DATA - (1) GMLAN SER DATA 3 GRN WIRE GRN/WHT WIRE GRY WIRE HIGH SPEED COOLING FAN RLY CTRL POWERTRAIN RLY COIL CTRL RED/BRN WIRE RED/GRN WIRE RUN/CRANK IGN 1 VOLT STARTER ENABLE RLY CTRL STARTING/CHARGING SYSTEM THROTTLE PRESSURE SENS SIG VIO/BLU WIRE VIO/GRN WIRE VIO/YEL WIRE WAKE-UP SER DATA WHT WIRE WHT/BLU WIRE WHT/GRY WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE YEL/WHT WIRE