Ok. New problem that just cropped up this morning... started the truck and kept hearing constant snapping sounds from under the hood on passenger side. Could not find any noticeable cause or pinpoint the location. The sounds were completely random, but increased in frequency if you revved the engine a bit. The sound was the same as a electrical short. Looked tonight while it was dark but couldn't find anything and it didn't make many noises. It sounds like it goes on and off with the ac system. Anyone notice similar issue? I wonder if I damaged a wire earlier this year when I did the differential cases.