Radiator problems of the 2008 Nissan Armada

I have 109,000+ miles on my 2008 Nissan Armada. While driving home I noticed my rear window had clouded and within a few seconds I saw my rpms rev to over 4000. I disengaged the cruise control to prevent it from trying to maintain my speed of 70 mph. At that point I lost the drive from the transmission. Luckily I was able to coast to a stop on the shoulder of an exit without an accident. Once stopped I checked to see if the transmission would engage enough for me to drive it into a service station parking lot; it did. I looked at the vehicle and had transmission fluid from the driver's side front wheel to the rear end of the vehicle. I found fluid accumulated in the front skid pan. Being out of warranty I contacted the Nissan dealer I purchased the vehicle from and a transmission specialist company to discuss. Nissan dealer told me they know of no problems Nissan is having like this, but I would have to replace the transmission, oil cooler, and radiator. . . . Approximately $7,000. 00+. The transmission specialist I called immediately told me the problem with my vehicle as soon as I mentioned I lost drive power. He told me I have the same problem with the transmission oil cooler cracking allowing water to enter the transmission causing damage the two Nissan Armadas he had recently repaired. He told me to check with Nissan before doing anything because Nissan had to extend transmission warranties on several models. They use the VIN # for legibility. I contacted Nissan (1-800-Nissan 1). They said my VIN # wasn't in the program so it is not covered even though I have the same problem that their other vehicles are having. How is this possible? other problems from the beginning. . . 4 fuel sending units - still inaccurate, several attempts to repair back camera system including replacing it - still blanking out or scrolling out of control, and roof console just dropping off.