GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2006 🢒 LaCrosse 🢒 Engine 🢒 Engine Mechanical - 3.8L 🢒 Upper Intake Manifold Cleaning and Inspection

    Object Number: 1229787 Size: SH
  1. Clean the upper intake manifold mating surfaces.
  2. Clean the upper intake manifold.
  3. Inspect the upper intake manifold for damage.
  4. Clean and inspect the PCV valve and components, replace as necessary.
  5. Replace the upper intake manifold as necessary.