Fuel pump pressure

[rockola1971]

In my 2003, inserting the key triggers the computer to start the fuel pump anticipating a start. Not sure when the computer figures after what length of time to forget that. Fuel pressure will slowly dissipate, and if you are monitoring that, I think removing the key is needed for the true reaction. My service tech told me 80 psi is about normal.

Both of my 2003 Tahoe LT's FFV, neither of them activate the fuel pump until the ignition is turned to the run position and then the pump shuts off within 3 secs or so. 80 psi isnt even remotely close to the spec for a FFV of our generation. The spec is 48-54psi KOEO.