You should maybe study the fuel system on your truck not possible for a flash to cause fuel drain back that would be like your software at work causing a hydraulic fitting to loosen up
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You should maybe study the fuel system on your truck not possible for a flash to cause fuel drain back that would be like your software at work causing a hydraulic fitting to loosen up
You can rule out the VATS speculation. In theft mode the truck will fire and die. The fuel delivery system is mechanical aside from the actual injectors. Even the pressure relief is mechanical. Elecronically it can only command the injectors not to open and your fuel pressure is normal when in theft mode.
I see this all the time and have never thought much of it. One of my LBZs did this yesterday. Prime and go back to work.
If you spent a bunch of time cranking over with a VATS (or other) dead issue, then perhaps that is what drained your lines. Just a thought.
I have flashed thousands of LLY truck, and never had this happen.
Sounds like you need a lift pump bud. Losing prime is a mechanical problem, not electrical. You have an air leak somewhere in the system. It will happen again, but next time you might not be at home when it does it.