This sounds like a pump issue or another pressure related issue.
The place to always start with these issues is to check the fluid level and condition.
https://www.2carpros.com/articles/how-to-check-and-add-transmission-fluid
If the fluid level is correct and in good condition, then we need to check the codes and see if we have any.
https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing
If we have no codes, then we need to move onto checking the pressure in the unit.
I am attaching all this info from the manual. Once we know what the pressure is in reverse and drive then we will know what next steps to take.
Please let me know what you find with this.
Thanks
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Wednesday, May 25th, 2022 AT 6:58 PM