Hello,
It sounds like the transmission torque converter has gone bad. which I would now replace the transmission because there is metal inside. This video shows how the job is done on a similar car the process is the same with diagrams below to show you on your car. Disconnect the battery first.
https://youtu.be/6N6b5F2ChyE
Check out the diagrams (below). Please let us know what happens.
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Tuesday, July 2nd, 2019 AT 4:03 PM