Where is the TCM located

This vehicle has what is called an NGC controller. That means the PCM has multiple functions, and this includes the TCM.

So, if you have codes for the TCM then that is the transmission side of the PCM. It is kind of like multiple modules built into one.

Here is a guide that will help with reading codes because I suspect you are getting a TCM specific code:

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

If you are then you test the PCM when it mentions TCM.

Please see the attached info below and let us know if you have questions.

Thanks