[Mikado14]

Your a pretty smart guy BlazerLT and you have a lot a good info you impart here but let's look at this from an electronics point of view. I'm sure what I say you will more than likely say "oh crap, that's right" but here goes. Even though the connectors are weather proofed (haha) minor humidity still gets in there. This will cause an oxidation on the connectors that is sometimes not visible. Your moving them simply caused the connector to clean itself. Will it last? who knows. What I have done is this, I have a set of burnishing tools that I use to clean both the female and the male. If I don't have the proper tool, I have used CRC 2-56? (have to look at the can again). It works great. I would clean the connections and put the dielectric grease around the weatherproof portion of the connector to act as a barrier. Sounds to me like you traced the problem very good instead of shotgunning and changing too many parts. I'm sure I would have done the same since I have only ever had a connector problem at the ECM only once. That too drove me nuts. Good Job!