GM Service Manual Online
For 1990-2009 cars only

    Object Number: 801828  Size: SH
  1. Inspect the transmission vent assembly for damage or being plugged. If the vent is damaged the torque converter housing (227) must be replaced.

  2. Object Number: 801830  Size: SH
  3. Remove the pressure test plug (40).
  4. Remove the level hole plug (36) and fluid level hole plug o-ring (37) from the case.