GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1644423  Size: SH
  1. Remove and discard the oil filter adapter gasket (1).
  2. Remove and inspect the oil pressure switch (5).
  3. Remove and discard the oil pressure switch O-ring (6).
  4. Remove and inspect the oil filter adapter hole plug (4).
  5. Remove and discard the oil filter adapter hole plug O-ring (3).
  6. Remove and inspect the oil filter fitting (2).

  7. Object Number: 1832659  Size: SH
  8. Remove the oil filter adapter pipe fittings.

  9. Object Number: 1832663  Size: SH
  10. Remove and discard the oil filter adapter pipe fitting seal.