GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Warning: Refer to Battery Disconnect Warning in the Preface section.


    Object Number: 1289475  Size: SH
  1. Disconnect the negative battery cable.
  2. Remove the intake manifold support bracket bolts.
  3. Remove the intake manifold support bracket.

  4. Object Number: 1289476  Size: SH
  5. Disconnect the knock sensor (KS) electrical connector.
  6. Remove the KS bolt.
  7. Remove the KS.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1289476  Size: SH
  1. Install the KS with the bolt and tighten to 20 N·m (15 lb ft).
  2. Connect the KS electrical connector.

  3. Object Number: 1289475  Size: SH
  4. Install the intake manifold support bracket with the bolts and tighten.
  5. • the intake manifold support bracket upper bolts to 25 N·m (18 lb ft)
    • the intake manifold support bracket lower bolts to 45 N·m (33 lb ft)
  6. Connect the negative battery cable.