Transmission oil light on and it shifts hard

Good morning.

When the engine stalls out, those lights will come on.

Do the lights come on while the engine is running?

As far as the hard shift, how long since you changed the fluid and filter?

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

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

Did you check for any codes?

Roy