Fuelabs when you just want the best

Not sure yet. the filter was changed at regular intervals, it was packed with snow under the truck and it was all frozen.
The pump sounds like it is bound up, even after removal of the pump and being in the house last night.

Without seeing it, my guess is that the fuel gelled. Depending on how long the pump was ran and how thick the fuel actually was, it might have some cavitation damage. Since the 100gph system pulls through the filter, I'd suggest a filter swap or doing what you've already done- brought it in the house to thaw.