GM Service Manual Online
For 1990-2009 cars only
  1. Remove the flywheel. Refer to Flywheel Removal.
  2. Notice:  Do not damage the crankshaft surface when prying out the crankshaft rear oil seal.


    Object Number: 4318  Size: SH
  3. Remove the crankshaft rear oil seal. Pry the crankshaft rear oil seal out with a suitable pry tool.
  4. Clean the crankshaft rear oil seal to engine block mating surface.
  5. Inspect the following areas:
  6. • Inspect the seal bore for nicks
    • Inspect the seal bore for burrs
    • Inspect the seal mating surface on the crankshaft for nicks