GOOD NEWS!!!

The ECM i ordered from Active Truck Parts came in today, and that fixed the problem! Apparently there is a certain type of ECM for these big trucks '91 and newer..
I sent my Driver side Fuel tank off to a local body shop to be cleaned and relined inside while i have the truck down (slight rust inside), so i should have it back next week hopefully.

Very big thanks to Dave W and Steveo for their inputs, comments, and suggestions!

I sincerely hope that anyone with an issue like or close to mine can benefit from this thread!