GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1571236  Size: SH
  1. Disconnect the knock sensor (KS) electrical connector (1).
  2. Remove the KS electrical connector clip from the oil level indicator tube bracket.
  3. Remove the oil level indicator tube. Refer to Oil Level Indicator and Tube Replacement .

  4. Object Number: 1578476  Size: SH
  5. Remove the KS bolt.
  6. Remove the KS.

Installation Procedure

Important: Rotate the pigtail 90 degrees from vertical before securing the fastener.

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1578476  Size: SH
  1. Install the KS.
  2. Install the KS bolt.
  3. Tighten
    Tighten the bolt to 25 N·m (18 lb ft).


    Object Number: 1571236  Size: SH
  4. Connect the KS electrical connector (1).
  5. Install the oil level indicator tube. Refer to Oil Level Indicator and Tube Replacement .
  6. Install the KS electrical connector clip to the oil level indicator tube bracket.