GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 SSR 🢒 Engine 🢒 Engine Mechanical - 6.0L 🢒 Intake Manifold Cleaning and Inspection

Cleaning Procedure

    Object Number: 1277097 Size: SH
  1. Remove and discard the intake manifold-to-cylinder head gaskets (514).

    2. Object Number: 1403311 Size: SH
  2. Remove the manifold absolute pressure (MAP) sensor. Refer to Intake Manifold Removal .
  3. Remove the evaporative emission (EVAP) valve, EVAP tubes, and fuel rail with injectors. Refer to Fuel Rail and Injectors Removal .
  4. Remove the throttle body and gasket. Refer to Throttle Body Removal .
  5. Clean the intake manifold (500) in solvent.

    6. Caution: Refer to Safety Glasses Caution in the Preface section.

  6. Dry the intake manifold with compressed air.

Inspection Procedure
  1. Inspect the manifold for the following conditions:
    2. • Damaged gasket or sealing surfaces
    • Loose threaded inserts or studs
    • Debris or restrictions within the passages of the manifold
    • Damaged or broken vacuum fittings
    • Inspect the composite intake manifold assembly for cracks or other damage.

    Object Number: 492779 Size: SH
  2. Inspect the intake manifold cylinder head deck for warpage.
    3. 2.1. Locate a straight edge across the intake manifold cylinder head deck surface.

    Position the straight edge across a minimum of two runner port openings.

    2.2. Insert a feeler gage between the intake manifold and the straight edge.

    An intake manifold with warpage in excess of 3 mm (0.118 in) over a 200 mm (7.87 in) area is warped and should be replaced.