Hello all...
Took darn near long enough, but it finally happened. My '03 S-10 acted up right in front of the dealership and I could make it do so reliably!
Dealership rolled it in and hooked up their computer reader. The truck seemed to be spitting out total nonsense values and they have decided the onboard computer is bad.
I'm hoping it is that. Thought about changing the battery today, but I missed the chance since I didn't have the right tools there with me at the time.
William