New valve body part number for infamous transaxle problems at twice the cost

Discussion in 'General Motoring' started by John Hupp, Nov 5, 2004.

  1. John Hupp

    John Hupp Guest

    NEWS FLASH! For 1990's Saturns (certainly '95 plus or minus a couple
    years) that shift into reverse slowly or slam when they do, or for
    Saturns that may not shift into upper gears when warm (often setting a
    diagnostic trouble code and lighting the Service Engine Soon
    indicator), the most common solution has been to replace the upper
    valve body. The old upper valve body part number was 21005813 and
    commonly cost close to $200, but some dealerships that offered their
    parts close to cost once sold them for around $100.

    A couple months ago Saturn withdrew the old part number and is now
    offering a successor, part number 21009428, but it is the entire valve
    body, upper and lower, complete with actuators. But hold onto your
    hats--the new solution costs $500-600!! Individual actuators are
    still available at around $60 apiece, and the bus plate at around

    It seems that Saturn is still wrestling with the infamous transaxle
    problems and, except where actuator or bus plate problems can be
    cleanly diagnosed, will now force a replacement of the whole valve
    body to help assure that all possible causes are covered.

    Anyone have more information on this development, or have any
    alternatives to offer in light of it?

    John Hupp, Nov 5, 2004
  2. John Hupp

    Blah blah Guest

    I have yet to see or hear of anyone that has tried this route with a
    TAAT but Sonnax makes valve body repair kits for just about every
    transmission out there.

    The cost should be a great deal less with Sonnax. It would be nice if
    someone was to take pictures and create a repair guide.
    Blah blah, Nov 5, 2004
  3. John Hupp

    jdoe Guest

    One thing to keep in mind though. THe sonnax repair involves use of a
    special "reamer" and it costs as much as a new VB. Unless you're going to do
    them all day long it doesn't pay.
    jdoe, Nov 5, 2004
  4. John Hupp

    dgharris Guest

    dgharris, Dec 8, 2004
Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.