GM Service Manual Online
For 1990-2009 cars only

    Object Number: 20720  Size: SH
  1. Remove the 1-2 accumulator piston seal (420) from the 1-2 accumulator piston (421).

  2. Object Number: 20720  Size: SH

    Important: Lubricate the new seal with TRANSJEL™ or equivalent in order to ease further installation.

  3. Install a new 1-2 accumulator piston seal (420) onto the 1-2 accumulator piston (421).

  4. Object Number: 20721  Size: SH
  5. Slide the 1-2 accumulator piston pin (422) into the case cover (401) with the chamfered end away from the case cover (401).
  6. Slide the 1-2 accumulator piston (421) into the case cover (401) with the chamfered end away from the case cover (401).
  7. Use TRANSJEL™ or equivalent in order to hold the 1-2 accumulator piston (421) to the case cover.