GM Service Manual Online
For 1990-2009 cars only

    Object Number: 452375  Size: SH
  1. Loosen the oil fitting, using a hex wrench.

  2. Object Number: 70416  Size: SH
  3. Remove the oil filter fitting.

  4. Object Number: 180862  Size: SH
  5. Remove the oil bypass valves, if required. Unstake the tangs on oil bypass valves and remove with long nose pliers.
  6. Inspect the oil filter fitting, replace if necessary.
  7. Discard the oil bypass valves, if removed.