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Home >> Buick >> 2006 >> Lucerne CX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 3.8L - Introduction (2 Of 2) >> Repair Instructions >> Engine Coolant Temperature Sensor Replacement >> Removal Procedure
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Removal Procedure

IMPORTANT: Care must be taken when handling engine coolant temperature sensor. Damage to the engine coolant temperature sensor will effect proper operation of the fuel injection system.
    Fig 1: Identifying Throttle Actuator Harness Connector
    GM1686287Courtesy of GENERAL MOTORS CORP.
  1. Drain the cooling system to a level below the engine coolant temperature (ECT) sensor. Refer to Cooling System Draining and Filling (Static Fill) or Cooling System Draining and Filling (Vac-N-Fill) .
  2. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
  3. Disconnect the engine harness electrical connector (2) from the ECT sensor.
    4. Fig 2: Identifying ECT Sensor
    GM1689167Courtesy of GENERAL MOTORS CORP.
  4. Remove the ECT sensor.
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