My brothers Pathfinder (47,000 miles) was out of warranty. He paid $410 for the fuel sending unit to be replaced, I showed him the service bulletin and had a nice and calm talk with 1-800-NISSAN-1 and they mailed him a check for a full refund.
The most important thing is to stay calm. If you need to say "I know it's not your doing, but I'm a little angry that it failed again". Just in case you get agitated.
Go to All About Nissan and under the heading of knowledge based information go to the service bulletins and open and print the one which pertains to our trucks and the fuel sender. When you call explain not only was yours fixed already there are huge numbers of years and models involved. Best of luck with it. Nissan does do good will repairs and if you're a repeat customer let them know what you've owned.
One last thing. The sending unit was replaced in my Pathfinder twice in five months and was covered without any hassles, but I was just under 36,000 miles at the time.
Clint