I have a 2004 LE with 255,000 miles on it. Was changing the transmission fluid today as I have on four previous occasions. I removed the drain plug and drained the pan, then when I went to replace the drain plug it would not tighten, just spins. I removed the pan and there's no nut inside the pan so I'm thinking the there is a nut or threads sandwiched between the inner at outer pan skin where the plug screws in??? Has anyone had this happen and how to fix it. Right now I can't back the drain plug out either. BTW: the pan was amazingly clean even at this high mileage. Thanks for reading and replying.