GM Service Manual Online
For 1990-2009 cars only

    Object Number: 182948  Size: SH
  1. Clean the intake manifold mating surfaces.
  2. Inspect the intake manifold for damage.
  3. Inspect the intake manifold for cracks near compression limiters.
  4. Inspect the crankcase ventilation passages in the intake manifold face for blockage and clean as necessary.
  5. Replace the intake manifold as necessary.