GM Service Manual Online
For 1990-2009 cars only

    Object Number: 2018083  Size: SH
  1. Remove the water drain cock from the stiffening crankcase.
  2. Remove the water drain cock plug from the water drain cock.

  3. Object Number: 2018086  Size: SH
  4. Using a hexagon wrench, remove the plug (1), gasket (2) and oil control valve filter (3).
  5. Remove oil pump assembly.