how much am I looking at for the full 50k service? What all is involved with this? Tranny flush, spark plugs, Radiator Flush, what else?

 

Unless you are towing heavily, no need to do the radiator flush till 100,000. Each dealer has different rates, especially on the plug change.I would put a few more miles on it before the plug change. Did mine at 65,000 and they were still in good shape. If you haven't the fuel filter needs changing.