Hey guys. I'm looking for any help or tips. I got an 02 lb7 that I have in my 96 crew cab. This was a running duramax/Allison combo. I physically drove the truck so I know it was. Im nearing the end of my swap/build (about 4 years later) and I cannot get it to fire. It will fire with just the smallest squirt of ether but will not stay running. The live data shows my fuel rail pressure is at 350 without cranking. It only gets up to about 600-700 and kicks over like it wants to fire then drops down to 350ish. From what I read it could be fpr or cp3. Any tips?? Thanks in advance!!