GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1644271  Size: SH
  1. Remove and discard the oil filter adapter gasket (1).
  2. Remove and inspect the heat shield bolts (9).
  3. Remove and inspect the heat shield (8).
  4. Remove and inspect the oil pressure switch (7).
  5. Remove and discard the oil pressure switch O-ring (6).
  6. Remove and inspect the oil filter adapter hole plug (2).
  7. Remove and inspect the oil filter adapter hole plug O-ring (3).
  8. Remove and inspect the oil filter fitting (5).

  9. Object Number: 1832674  Size: SH
  10. Remove the oil filter adapter pipe fittings.

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