Well today I pulled the fuel pressure sensor from another V6 LS I have. Put it in my red one and - SOS. Everything the same. Forscan reads very high fuel pressure, a gauge on the schrader reads <10 psi. What to do? Swap out the fuel pump? But engine runs fine when pwr/gnd jump pump motor. Swap out the REM? (but donor has auto, mine has getrag. Is REM same?) Look for crimps etc in fuel lines? Punt?