GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 Malibu 🢒 Engine 🢒 Engine Controls - 2.2L (L61) 🢒 Knock Sensor Replacement

Removal Procedure

    Object Number: 895903 Size: SH
  1. Record the preset radio station.
  2. Turn the ignition OFF.
  3. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  4. Remove the knock sensor (KS) harness connector.
  5. Remove the KS from the retaining clip by inserting a flat-bladed screwdriver between the connector and the clip while sliding the connector upward.
  6. Remove the KS.

Installation Procedure

    Object Number: 895903 Size: SH

    Important: If a new KS pigtail connector retaining clip is going to be used, the old one must be removed from the intake manifold. Use a push pin removal tool to remove the clip from the intake manifold.

  1. Insert the KS pigtail connector with the retaining clip into the intake manifold hole or slide the KS pigtail connector over the retaining clip from the top.
  2. Connect the KS harness connector. Push in the connector until a click is heard, then pull back to confirm a positive engagement.

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

    Important: The larger metal contact area of the KS MUST be towards the engine block. DTC P0325 may result if the sensor is installed backwards.

  3. Install the KS at the 9 o'clock position and the attachment bolt.

    4. Tighten
    Tighten the knock sensor-to-engine block bolt to 25 N·m (18 lb ft).

  4. Connect the negative battery cable.

    5. Tighten
    Tighten the battery terminal bolts to 17 N·m (13 lb ft).

  5. Reset the clock and preset radio stations.