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Home >> Chevrolet >> 2005 >> Chevy Express G3500, Van Passenger Extended >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 4.8L, 5.3L, And 6.0L - Introduction >> Repair Instructions >> Engine Coolant Temperature (ECT) Sensor Replacement >> Removal Procedure
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Removal Procedure

    NOTE: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
  1. Turn OFF the ignition.
    2. Fig 1: View of ECT Sensor Electrical Connector
    GM50967Courtesy of GENERAL MOTORS CORP.
  2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Drain the cooling system below the level of the ECT sensor. Refer to Draining and Filling Cooling System in Engine Cooling.
  4. Lower the vehicle.
  5. Disconnect the electrical connector from the engine coolant temperature (ECT) sensor.
    6. Fig 2: Locating ECT Sensor
    GM50974Courtesy of GENERAL MOTORS CORP.
  6. Remove the ECT sensor.
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