GM Service Manual Online
For 1990-2009 cars only
Makes šŸ¢’ Chevrolet šŸ¢’ 2005 šŸ¢’ Malibu šŸ¢’ Engine šŸ¢’ Engine Cooling šŸ¢’ Engine Coolant Temperature Sensor Replacement

Removal Procedure

    Object Number: 895897 Size: SH
  1. Turn the ignition OFF.

    2. Important: Engine coolant must be drained below the level of the engine coolant temperature (ECT) sensor.

  2. Disconnect the ECT sensor harness connector.
  3. Remove the ECT (1).

Installation Procedure

    Object Number: 895897 Size: SH

    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 242Ā® Threadlocker or equivalent to the sensor threads.

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the ECT sensor (1).

    3. Tighten
    Tighten the ECT sensor to 20 NĀ·m (15 lb ft).

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