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Home >> Cadillac >> 2005 >> STS 4.6 A, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 4.6L (LH2) - 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 ECT Sensor Harness Connector
    GM887908Courtesy of GENERAL MOTORS CORP.
  1. Turn OFF the ignition
  2. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 4.6L (LH2).
  3. Drain the coolant to below the level of the engine coolant temperature (ECT) sensor. Refer to Draining and Filling Cooling System in Engine Cooling.
  4. Disconnect the ECT sensor harness connector.
    5. Fig 2: View Of ECT Sensor
    GM1247897Courtesy of GENERAL MOTORS CORP.
  5. Remove the ECT sensor.
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