Anyone ever use a GB reman injector for a 2000 vortec? I replaced mine last year, and now I’m having intermittent long cranks about hrs apart. It will start fine in between. When it sits overnight, fuel pressure goes to zero. I open the throttle body and I don’t smell raw fuel.

Trying to figure out if it’s the pump or the spider again. Thinking for us allowing fuel back into the tank!