I just had the exact same issue with my 05... drove it 2500 miles from AZ.. got home and turned truck off.. 5 min later.. cranked but no start. a couple hours later i checked and same thing. left it over night and it started. Prior to this i have had no problem with a no start. Took it to dealer, no codes and they recommended i not take the fuel tank below 1/4. Kicker, they played around with the various sensors and wiring and tripped a code for back pressure sensor, then charged me 100 bucks for warrenty deductable..(truck has 37K on it) Hasn't happened again, but i haven;t had the time to drive back to AZ to duplicate the conditions it happened under. /ubbthreads/images/graemlins/smile.gif