Anyone out there experience a no start problem in temps below 25 degrees? I have had the truck towed to the dealer, who returned it to me after 3 days and were unable to solve the problem.(Daily temps hovered below 20 degrees each day during the time they had it). No codes present---there is fuel but no spark in sub freezing temps. Other mechanic friends cannot trace it, but we at one time found a 1626 code when it would not start, which is "theft deterent fuel shutoff"...when it warmed up it started and the code disappeared...Help. Truck is driving me crazy, I do not want to replace it (I love it) but that may be the only solution. Sage Sr.