GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Hoist and raise the vehicle. Refer to Lifting and Jacking the Vehicle .

  2. Object Number: 1809558  Size: SH
  3. Disconnect the engine wiring harness electrical connector (3) from the knock sensor electrical connector (4).
  4. Remove the knock sensor electrical connector (4) from the oil level indicator tube bracket.

  5. Object Number: 1578476  Size: SH
  6. Remove the knock sensor bolt.
  7. Remove the knock sensor.

Installation Procedure


    Object Number: 1578476  Size: SH
  1. Install the knock sensor.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the knock sensor bolt.
  4. Tighten
    Tighten the bolt to 25 N·m (18 lb ft).


    Object Number: 1809558  Size: SH

    Important: Rotate the knock sensor electrical connector 90 degrees from vertical before securing the fastener.

  5. Install the knock sensor electrical connector (4) to the oil level indicator tube bracket.
  6. Connect the engine wiring harness electrical connector (3) to the knock sensor electrical connector (4).

Removal Procedure

  1. Hoist and raise the vehicle. Refer to Lifting and Jacking the Vehicle.

  2. Object Number: 1809558  Size: SH
  3. Disconnect the engine wiring harness electrical connector (3) from the knock sensor electrical connector (4).
  4. Remove the knock sensor electrical connector (4) from the oil level indicator tube bracket.

  5. Object Number: 1578476  Size: SH
  6. Remove the knock sensor bolt.
  7. Remove the knock sensor.

Installation Procedure


    Object Number: 1578476  Size: SH
  1. Install the knock sensor.
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the knock sensor bolt.
  4. Tighten
    Tighten the bolt to 25 N·m (18 lb ft).


    Object Number: 1809558  Size: SH

    Note: Rotate the knock sensor electrical connector 90 degrees from vertical before securing the fastener.

  5. Install the knock sensor electrical connector (4) to the oil level indicator tube bracket.
  6. Connect the engine wiring harness electrical connector (3) to the knock sensor electrical connector (4).