Upper Intake Manifold Cleaning and Inspection

WARNING: This page is about a different variant/trim than selected.

Fig 1: Cleaning Upper Intake Manifold

GM1229787

Courtesy of GENERAL MOTORS CORP.

Clean the upper intake manifold mating surfaces.
Clean the upper intake manifold.
Inspect the upper intake manifold for damage.
Clean and inspect the PCV valve and components, replace as necessary.
Replace the upper intake manifold as necessary.