Didn’t leave til a little later this morning (still very cold) however I did leave the key on til pump shut off then cycled on off a few times however it did hold fine but what I did notice the car fired up much quicker. My question is was I not leaving key on long enough til FP stopped. My ears at 54 now suck from years of gun powder to high octane etc abuse. 🙄

could be bravo-itus...........

You shouldn't need to wait until the fuel pump stops. My 2001 2500HD with an 8.1 was doing the basically the same thing. Also, the fuel gauge was acting up. I talked to the dealer and he told me the tank sender and fuel pump were one part and most likely the check valve in the fuel pump was bad and letting fuel seep back to the tank. On a cold start, if I cycled the key 2-3 times it fired right up. If I just tried to fire it on the first key turn it pretty much would not start. Cycle the key and it would fire right up. I traded it in before fixing it.

Tks.

I had a northstar caddie that did the same thing, was the regulator

That engine hold up ok?