Iv had a FASS 150/150 on my truck for about 8 months and recently it has been giving me trouble and now its completly dead. Last night my fuel pressure gage was bouncing all over the place and then just went to zero. I got home and left it for the night. This morning I went to fire the truck and I could hear the pump running but not at full power. As soon as the truck fired the gage went to zero again. I drove to work and quickly checked the connections and I have power all the way to the pump but the pump is not turning on. Called my dealer and they dont stock that motor. About a week to get and thats if I sent in my warranty card#@$%! My main concern is that this is my daily driver and most important my money maker for plowing snow and we starting to getting snow. Does anyone know if it will hurt to run the truck without the lift pump. From what I know the duramax run the same cp3 pump the 5. 9 does but without a lift pump. So im thinking Ill be ok. And of course by the time I got back to the shop today everyone was closed. And tomorrow being friday I dont think Ill have a pump. Any information would help.