GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1887297  Size: SH
  1. Remove the right catalytic converter. Refer to Catalytic Converter Replacement - Right Side.
  2. Remove the engine wiring harness heat shield nut (3).
  3. Remove the engine wiring harness heat shield bolts (1 and 4).
  4. Remove the engine wiring harness heat shield (2).

  5. Object Number: 1887298  Size: SH
  6. Disconnect the engine wiring harness electrical connector (5) from the knock sensor (2).

  7. Object Number: 1800585  Size: SH
  8. Remove the knock sensor bolt and sensor.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1800585  Size: SH
  1. Position the knock sensor to the engine block and install the knock sensor bolt.
  2. Tighten
    Tighten the bolt to 25 N·m (18 lb ft).


    Object Number: 1887298  Size: SH
  3. Connect the engine wiring harness electrical connector (5) to the knock sensor (2).

  4. Object Number: 1887297  Size: SH
  5. Install the engine wiring harness heat shield (2).
  6. Install the engine wiring harness heat shield bolts (1 and 4).
  7. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  8. Install the engine wiring harness heat shield nut (3).
  9. Tighten
    Tighten the nut to 10 N·m (89 lb in).

  10. Install the right catalytic converter. Refer to Catalytic Converter Replacement - Right Side.