GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Generic 🢒 2003 🢒 Unit Repair 🢒 Engine 🢒 Engine Mechanical - 5.0L and 5.7L 🢒 Intake Manifold Cleaning and Inspection

    Object Number: 500682 Size: SH

    Caution: Wear safety glasses in order to avoid eye damage.

  1. Clean the upper intake manifold in cleaning solvent.
  2. Dry the upper intake manifold with compressed air.

    3. Object Number: 500684 Size: SH
  3. Clean the lower intake manifold in cleaning solvent.
  4. Dry the lower intake manifold with compressed air.

    5. Object Number: 500685 Size: SH
  5. Inspect the upper intake manifold for the following:
    6. • Cracks or other damage to the exterior (1)
    • Cracking or damage in the gasket grooves (2) and (3)
    • Damage to the throttle body mounting surface (4)
    • Loose or damaged bolt hole thread inserts (5)

    Object Number: 500686 Size: SH
  6. Inspect the lower intake manifold for the following:
    7. • Damage to the gasket sealing surfaces (1), (2) and (3)
    • Restricted exhaust gas recirculation (EGR) system passages  (4)
    • Restricted cooling system passages (5)
    • Cracks or damage
    • Damage to the threaded bolt holes