The Transmission Control Module (TCM) on a 2002 Chrysler Town & Country is typically located
inside the transmission itself. It's not an easily accessible external module like some vehicles. You'll need to access it by removing the transmission to get to it.
Therefore, attempting to locate and access it yourself is strongly discouraged. This is a job for a professional mechanic due to the complexity involved. Replacing or repairing the TCM usually requires specialized tools and knowledge.
