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Removal Procedure

WARNING: This page is about a different car, the 2009 GMC Savana and 2009 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Engine Coolant Temperature Sensor
    GM1934571Courtesy of GENERAL MOTORS CORP.
  1. Remove the engine cover. Refer to Engine Cover Replacement .
  2. Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill) or Cooling System Draining and Filling (Vac N Fill) .
  3. Disconnect the engine wiring harness electrical connector (1) from the engine coolant temperature (ECT) sensor (2).
    4. Fig 2: View Of ECT Sensor
    GM1876211Courtesy of GENERAL MOTORS CORP.
    CAUTION: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
  4. Remove the ECT sensor from the cylinder head.
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