1995 Dodge Intrepid Locations of Transmission Relay & T

I have a 1995 Dodge intrepid 3.3L Automatic trans. I have been trying to diagnose/fix my "limping" auto transmission. I have flushed fluid with ATF+4, new filter, replaced both input & output sensors & checked ground cable. I am still having the problem w/ limp mode & it is also slipping pretty badly. The trans fluid & pan magnet had no metal in it so I am thinking/hoping it is a Solenoid or Electronic problem. The car would down shift to 2nd gear as soon as the engine warmed up & the CHECK ENGINE LIGHT would come on @ the same moment. There are only codes 12 & 55. I know 12 is battery was disconnected in last 50 key strokes & 55 is end of readout.
I need the location of the Transmission Relay (only $10 part is worth a try) & the TCM location. Is it possible that I have already repaired the problem, but it is still doing the same thing because the TCM needs to be reprogrammed? Will my TCM go to default if I disconnect the battery for a few hours? Unfortunately, I can't even afford the money I have had to spend on the parts. I had to sell some stuff @ the pawn shop to pay for them, so I can't afford to donate much @ this time. I really need your help. It can be your "good deed" for the day. Thanks in advance for your assistance. God Bless.