Advice For 2013 Dodge EGR

I did a search but I can't find my answer so I thought I would ask someone. My Ram is a 2013 6.76 and I want to know your experience in servicing the EGR valve. Truck went in for a recall and he said I was approaching mileage to change it at a tune of $1,200.00. I have no issues with the truck, or lights on etc. I cannot really even find at what mileage I am to do this service. I have changed out my CC filter but this one is throwing me. What is involved in the changing of the unit? Dave Smith says they clean the system @ $649 which is less but is it the right way? Any thoughts please. Also, do we have a DPF on our trucks and do we RE-Gen because I have never seen anything light up for that either if we do.