Intake Manifold Cleaning and Inspection - Upper

WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

Clean the upper intake manifold mating surfaces.
Clean the upper intake manifold.
Inspect the upper intake manifold for damage.
Replace the upper intake manifold as necessary.

Fig 1: Upper Intake Manifold (C, H, W)
Courtesy of GENERAL MOTORS CORP.