Ok, so I found this thread
http://www.chevytalk.org/fusionbb/sh...hp?tid/275870/
and the part numbers listed there ARE the part numbers Rockauto lists for a 95GMC with 5.7L. That said, I KNOW the part number ON MY TRUCK is the 17087194.....so, should I try the AC Delco 2145073 or get the Delphi unit? I live in BFE so not a lot of options around to buy locally......