Tcm

This vehicle does not have a dedicated TCM as the ECM controls the transmission on this vehicle as well.

Is there a specific issue you are having? If so, we should scan for codes and find out if there are any issues pointing us to a specific issue.

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

However, I am attaching the entire powertrain wiring diagram below which should help explain this and any testing that we are going to have to do.

Please let us know what other questions you have.

Thanks