I suspect the transmission is the issue. This could be something complicated or as simple as the fluid is low. I would start the engine and get it warmed up and then pull the transmission dipstick to see if the fluid is in the proper level. If not, you need to add fluid. If the fluid stinks or is not pick in color then you may want to change it out.
https://www.2carpros.com/articles/how-to-service-an-automatic-transmission
Let me know what you find with the fluid and we can go from there. Thanks
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Wednesday, March 17th, 2021 AT 3:51 PM