94 intrepid

same old same old.tranny stuck in 2nd gear.replaced both input and out put sensors changed tranny fluid and filter,same problem.was told it could be the tran control module .i believe it is located on the drivers side fender wall,under the hood and next to the battery.it is about 4in by 2-3in plug.that plugs into another silver box that is about 6-8in sq.it is held in to this box by a 5/16 bolt.am i in the right place?.do i have the right part(tran control module)?.is it the plug or the box that the plug plugs into?if it is the plug(complete with a gang of about 10 wires),where do all the wires go ?thanks in advance for any snipped-for-privacy@rochester.rr.com