[GM-power]

Older theft deterrent would shut the fuel system down. I'm not very familiar with the l38, I see what your saying about them being in the same circuit. With it flashed I'm kinda stumped, I know the power module is for the manipulation of fuel pressure. The high pressure pump has its own regulator, and the only reason for the pump needing to drop pressure would be for cylinder deactivation? If so couldn't you just delete the module and run power to the pump? Have a regulator plumbed for the 60 psi or whatever it requires? Just throwing ideas out there.