GM Service Manual Online
For 1990-2009 cars only

    Object Number: 2148885  Size: SH

    Important: Removal of the intake manifold to cylinder head retaining bolts (1-10) should be performed in sequence. Failing to do so may distort the intake manifold (B).

  1. Remove the intake manifold to cylinder head retaining bolts (A) in sequence.

  2. Object Number: 2030064  Size: SH

    Important: Carefully, tap the intake manifold (1) with a rubber mallet to break the gasket seal and lift the intake manifold from the engine (2).

  3. Remove the intake manifold (1) from the engine (2).
  4. Important: The engine (2) must be plugged with a clean lint free cloth to prevent foreign matter entry into the engine.

  5. Plug the engine (2) with a clean lint free cloth.

  6. Object Number: 1954080  Size: SH

    Important: The intake manifold to cylinder head gaskets are single use only components and must be replaced whenever the intake manifold is removed from the engine.

  7. Remove the intake manifold to cylinder head gaskets (1).
  8. Discard the intake manifold to cylinder head gaskets (1).

  9. Clean and inspect the intake manifold. Refer to Intake Manifold Cleaning and Inspection.