So I got my codes ran and it showed that my thermostat needs replacement, and a fuel trim code popped up.

So I'm guessing there's a vaccuum leak somewhere along my intake/manifold. Hopefully once I find it it'll wipe out that code and all I have to worry about is replacing that thermostat.Anyone one else dealt with this code?

Its one thing after another!!!! jeezus, I just finished replacing my alternator belt, waterpump and sparkplugs.

Precisely what codes did you get? A vacuum leak would probably cause a lean condition, not a rich condition, because there's additional air entering the combustion cycle that hasn't been measured by the MAF. This would cause codes like P0174, etc.