i keep getting a 1093 code in my truck, got a lly, 04, duramax, truck runs great when 3o degrees or above, geled on me in the beginning of winter, thawed out with salamander, changed fuel filter, i have a pin hole leak in a steele line, could that be the issue, also running PPE tune in truck, if i give it to her she will roll a ton of coal but wont get out of its own way, when code is cleared truck runs normal, depending on temp. Going to fix fuel line this weekend see how truck acts, any suggestions on where to start with diag?