I also have a 14 GC. Mine has 101,800 miles. Two weeks ago the engine quit while traveling ~75mph and 1/4 tank of fuel. Dealer replaced two fuel pumps in fuel tank for $1,500. On Monday same thing, engine quit with 1/4 tank of fuel. Different Jeep dealer this time, he says the first dealer never fixed the problem and that I should take it back to him. I put 10 gallons of diesel in and it seems to be running fine. (both dealers said to keep the tank above 1/3rd full) During the first 100,000 miles I regularly ran the fuel close to empty without any issues. I can't help but wonder what is going on? What has changed?