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Home >> Chevrolet >> 2004 >> Malibu Maxx >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Control System (Introduction) - 2.2L (L61)) >> Repair Instructions >> Engine Coolant Temperature (ECT) Sensor Replacement >> Installation Procedure

Installation Procedure

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    IMPORTANT: Tap out the sensor mounting hole in the engine head to remove any thread sealant residue. Clean any sealant residue from the old sensor and apply the RTV sealant to threads if old the sensor is going to be reused.
  1. Apply the thread sealant GM P/N 21485227, LOCTITE 242® Threadlocker or equivalent to the sensor threads.
  2. NOTE: Refer to Fastener Notice in Cautions and Notices.
    Fig 1: Installing ECT Sensor
    GM895897Courtesy of GENERAL MOTORS CORP.
  3. Install the ECT sensor (1).

    Tighten:  Tighten the ECT sensor to 20 N.m (15 lb ft).

  4. Connect the ECT sensor harness connector. Push in the connector until a click is heard, then pull back to confirm a positive engagement.
  5. Fill the engine coolant to the proper level.