Hi,
It sounds like what is called the reaction sun gear housing has failed. I attached an exploded view of the component I'm referring to.
Here is what I suggest. Drain and remove the transmission fluid and remove the transmission oil pan.
There is a magnet in the pan. See if there are any metal shavings attached to it.
Let me know.
Joe
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Monday, March 7th, 2022 AT 2:05 PM