Transmission shifts hard

Good evening,

The TPS controls shift time, not shift quality. That is mechanical from the valve body.

https://www.2carpros.com/articles/automatic-transmission-problems

I would start by changing the fluid and filter and see if that helps. Beyond that, it is the valve body itself that may have a broken accumulator spring.

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

I attached a picture of the location of the spring.

Roy

More info: after parked for hour or so then transmission shifts normal.

Okay, then it is something with the valve body.

Start with the fluid change.

Roy