Hi,
That sounds like a line pressure issue. If you place it in gear and lightly press the throttle, does it move? Was the cooler flushed? There were issues with restricted fluid flow due to a partially blocked cooler.
Ask if that was done. Actually, (it's been a while) but I remember there was a recall on one of the cooler lines' connectors. The connector reached its melting point when the transmission fluid got too hot. This was a recall, but I doubt they would cover it now.
Regardless, let me know what they tell you. Also, you may need to perform a line pressure test. I can help you through that.
Let me know.
Joe
Saturday, March 19th, 2022 AT 6:49 PM