reading through that link it pretty much refers to the VP equipped trucks from 98.5 to 2002. Lot of work prescribed there for something a/c duct foil tape will fix.

I HIGHLY doubt that RF noise is the cause of your woes, but also don't have many "been there/done that" scenarios relating to the DR trucks for "dropping out" of od or lockup. As mentioned, a good scan tool, and someone to monitor it properly is step 1 I'm thinking...