GM Service Manual Online
For 1990-2009 cars only

Intake Manifold Cleaning and Inspection Upper

Cleaning and Inspection Procedure

  1. Clean the upper intake manifold bolts.
  2. Clean the upper intake manifold studs.

  3. Object Number: 57252  Size: SH
  4. Clean any gasket material from the upper intake manifold mating surfaces.

Intake Manifold Cleaning and Inspection Lower

  1. Clean the intake manifold gasket surfaces.
  2. Clean the injector bores.
  3. Clean the intake manifold bolts and studs.