Update: So the other mechanic I work with traced wires for a few hours and came to the conclusion that something in the engine ECM was shorting the ECM fuse. The next day we made arrangements to have a Cat Tech and a new ECM come out and get us running. Well he pretty much did the same thing our mechanic did to verify that the ECM was actually the problem. Well not only was the ECM toast, the TCM was toast, the EMS panel was toast, left steer finger control sensor toast, F N R switch was toast, brake pedal switch was also toast.
The culprit??: Over charging alternator/operator failure to give a damn to a lil red light.