Transmission stuck in second gear

If the transmission fluid is low it can cause this issue have you checked it? Here is how in the diagrams below, I would also service the unit to look for metal in the pan. Here is a guide to help walk you through and diagrams below to show you how on your car:

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

Check out the diagrams (below). Please let us know what happens.

Cheers, Ken