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Home >> GMC >> 2005 >> Sierra 2500 HD, 2D Pickup, 6.6 2, RWD, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 6.6L (Introduction) >> Repair Instructions >> Engine Coolant Temperature (ECT) Sensor Replacement >> Removal Procedure

Removal Procedure

NOTE: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
    Fig 1: View Of Engine Coolant Temperature Sensor And Electrical Connector
    GM1335413Courtesy of GENERAL MOTORS CORP.
  1. Drain the coolant to a level below the engine coolant temperature (ECT) sensor. Refer to Draining and Filling Cooling System (w/RPO HP2) or Draining and Filling Cooling System (w/o RPO HP2) in Engine Cooling.
  2. Disconnect the ECT sensor electrical connector.
    3. Fig 2: Locating Coolant Temperature Sensor
    GM1409328Courtesy of GENERAL MOTORS CORP.
  3. Remove the ECT sensor (1).
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