Thats absolutely ridiculous, I wonder how they figure water got into the transmission if its a sealed unit. Only way would be through the breather at the top of the transmission, meaning you would have had to been in water higher than the wheels. Unless you popped the cap off the dip stick tube and literally poured water directly into it. If you actually drove that deep in water I can guarantee you would be having a lot more issues than just the transmission. Dealer is 100% full of crap on this one. Im really curious how they explained water got inside the transmission now