I was driving my 2002 Dodge Durango when my check engine light came on and then it started acting up... seems to be stuck in 3rd gear. When I got home I checked to see what the codes were and I got P0700 & P0888. I have the manufacturer service manuals and I was following the directions to determine what was causing the P0888 code.

It tells me to unplug the TCM... the TCM is not where the book tells me it is located. After some research, I believe I have the NGC controller (PCM). I am now stuck and not sure which plug is for the transmission and how to test it.