[bigbutr]

After taking the advice of taking my truck to a local guy, it's back up and running. Diagnosed with a bad TPS sensor and Idle Control. Took both off, and each still had water in them. Idle sensor actually had the start of some rust while the TPS was immovable.
Once replaced, truck runs fine, shifts fine, sounds good and Check Engine light has not come back on. I'll be using it Saturday on my postal route, so I'll feel more confident that it's back up to speed once that long day is over.
Great thing - actually cost me less for this fix than the other place was going to charge just to diagnose the problems. I know where I'll be taking my truck back for future work, but here's hoping I don't have to be doing that much in the future.
Thanks to everyone for their advice and hopefully if someone goes through this type of situation in the future, they'll know what to key on.