What is your question?
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What is your question?
My wife's Z28 runs great until it gets warm,then it shuts off,the fuel pump is working but it acts like it's not getting any fuel

sounds like the same thing that happened to my 98 turned out it was my ignition coils, then ran fine.
Replacement pigtails for what?
AC Delco, Borg Warner, Dorman/Help, and Standard Motor Products all make replacement pigtails for your fuel pump, So if that many companies are making replacement parts then it needs to be checked with a meter to make sure its not a broken wire thats causing this intermittent problem