Hey I'm in the middle of my 5.3 swap. It's a 2000 5.3 and am using the 5.3 computer but a 96 5.7 fuse panel. Anyways my problem is that pin 9 c2 red (fuel pump relay control) is not providing a ground?!? So the fuel pun will not run. If I ground the wire the fuel pump will run. I can't figure out why the PCM will not ground the wire. I have checked my grounds and still nothing. Any help would be much appreciated! Thanks