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Home >> Buick >> 2009 >> Allure CX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 3.8L - Introduction >> Repair Instructions >> Engine Coolant Temperature Sensor Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: Removing ECT Sensor
    GM186069Courtesy 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.
    CAUTION: Replacement components must be the correct part number for the application. Components requiring the use of the thread locking compound, lubricants, corrosion inhibitors, or sealants are identified in the service procedure. Some replacement components may come with these coatings already applied. Do not use these coatings on components unless specified. These coatings can affect the final torque, which may affect the operation of the component. Use the correct torque specification when installing components in order to avoid damage.
  1. Coat the threads with sealer GM P/N 12346004 (Canadian P/N 10953480) or equivalent.
  2. CAUTION: Refer to Fastener Caution .
  3. Install the ECT sensor.

    Tighten:  Tighten the ECT sensor to 25 N.m (18 lb ft).

  4. Connect the ECT sensor electrical connector.
  5. Fill the cooling system. Refer to Cooling System Draining and Filling (L26 Static Fill) or Cooling System Draining and Filling (L26 GE 47716 Fill) .