[major7venth]

Not sure what is/ or is no longer connected with your 4.44 so, Run a trans. diagnostic?, any codes?. Check battery with a carbon pile battery tester,(take battery to a battery shop/parts house,they can test it for you. (and be sure battery connections are good) if faulty battery, replace battery. Check impedence on the trans. resister (if its is still being used with your 4.44) (located behind the battery) ((15 ohms, (I think, check the book to be sure. any impedance is usually good) Check Alternator output. These things will be sure the electricals are keeping the TCU happy. Change Trans. filters and replace trans. fluid with Synthetic, if no improvment, Your 4th trans is probably next. Good luck,tell me how it goes, would be interested to know the final remedy.
M7