Transmission noise first to second and second to first?

Can I ask where the rattle is coming from, front, center or rear? Please upload a video in your response of any problems so we can see what to help you with. It could be a loose heat shield or broken hanger for the exhaust system. Please check the image below to see what I am talking about and get back to me.

I don't believe that is the issue. I've attached a couple of video's, the first is it upshifting the second downshifting. Always 1st to 2nd and 2nd to 1st. I hope you can open them

Thanks for the videos, they help. I have seen this problem before, this is the drivetrain control module has gone out, but to be sure let's run a CAN scan to see if there are any codes stored. You can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

Here is a video to show you how:


https://youtu.be/u-4syLc-ifQ

Here is the location and how to replace the drivetrain control module in case a code comes up for it. Check out the images (below). Please let us know what happens.