Where is transmission control module on gmc jimmy?

My understanding is that it is built into the PCM Powertrain Control Module. This would be the Black rectangular box mounted inside the engine compartment on the passenger side fender. If you want to see what one looks like, do a search on Ebay as if you are trying to buy one. There you will find a picture. There are many, many systems that control or add to the management of the 4L60E transmission. If you are needing to know where the transmission control module is, I wish you great luck with finding it.