More than likely this is pump/pressure related. It may not be the pump itself, but it could be a cut seal that opens up when the fluid gets hot.
We need to start by checking the fluid and see what the condition is and if it is low.
https://www.2carpros.com/articles/how-to-check-and-add-transmission-fluid
Next, we need to check the line pressure and find out if we have low pressure or if we have a leaking seal. If the pressure is correct, then we can assume we are going to have to tear the unit down and inspect/rebuild it.
Please see the attached and let me know what questions you have, and we can go from there.
Thanks
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Friday, May 13th, 2022 AT 6:41 PM