GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Generic 🢒 1998 🢒 Unit Repair 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 3T40 🢒 Case Cover and Gaskets Disassemble

    Object Number: 15741 Size: SH
  1. Use a flat blade screwdriver in order to disconnect the rod and clip assembly (701) from the manual valve (406).

    2. Object Number: 15743 Size: SH
  2. Remove the case cover bolts and the two number 40 Torx™ head bolts.

    3. Notice: Pry on the corner of the case side cover near the locating dowel pins (111), to prevent damage to the sealing surfaces.

  3. Remove the case cover (401) from the case. A rubber mallet may be required in order to loosen the case cover from the case.
  4. Set the case cover (401) aside on a clean work area with the case side of the cover facing upward.

    5. Object Number: 15744 Size: SH

    Important: The 1-2 accumulator piston (421) and the pin (422) may have remained within the case cover (401).

  5. Remove the 1-2 accumulator piston (421) and the pin (422).
  6. Remove the 1-2 accumulator spring (419).

    7. Notice: Do not damage the case flanges when removing the gaskets.

  7. Remove the center gasket (415) from between the case and the case cover.
  8. Remove the case cover gasket (416) from the case.