Just to try and clarify the issue, your transmission is predominately hydraulically controlled. This means that most likely it not shifting due to an internal failure however, if there is no issue with a speed sensor or other sensor then it is most likely internal. The fact that you have a few codes that point to other systems, does not tie it to the transmission. The module may solve the other issues but it is unlikely that they are all related.
Basically, I suspect you have a few different issues that are not related.
If you need more help with this, let us know the specifics about your vehicle and we can get you the detail that you would need. Thanks
Friday, July 17th, 2020 AT 1:04 PM