Bad shifting

Hello, I'm Danny.

Having the check engine light on means there is a trouble code stored in your cars computer.Since you say it shifts hard it could be a transmission trouble code.If you don't have access to a scanner/code reader most auto parts stores will check for free (AutoZone). Here is a tutorial showing what is involved:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Once you have the code(s) read get back to us with the information to help properly diagnose the problem.Hope this helps and thanks for using 2CarPros.

Danny-