LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hummer >> 2005 >> H2 4D Utility Pickup >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Introduction >> Repair Instructions >> Engine Coolant Temperature (ECT) Sensor Replacement >> Removal Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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. Drain the cooling system below the level of the ECT sensor. Refer to Draining and Filling Cooling System in Engine Cooling.
  3. Disconnect the electrical connector from the engine coolant temperature (ECT) sensor.
    4. Fig 2: Locating ECT Sensor
    GM50974Courtesy of GENERAL MOTORS CORP.
  4. Remove the ECT sensor.
scientia non olet · About LEMON Manuals