GM Service Manual Online
For 1990-2009 cars only

    Object Number: 49391  Size: SH
  1. Inspect the oil pump drive shaft (227) for the following:
  2. • A scored or rough journal surface
    • Stripped or burred splines
    • A cut or damaged seal
  3. Install a new oil pump drive shaft seal (228) onto the oil pump drive shaft (227).

  4. Object Number: 49394  Size: SH
  5. Install the oil pump drive shaft assembly (227) into the case cover (400).