Nothing is worse than going to change your oil and the technician used the hand of god to put the drain plug bolt back in. Glad you got it squared away..
At this point, we should ask who hasn't unfortunately. It seems to be a number of different "Fixes". Let us know what the dealer says... also, take a look around the forum here about this, lots of threads and different answers/opinion.
Welcome to the site!
http://www.autonews.com/article/20170927/OEM11/170929805/fca-to-engage-in-settlement-talks-over-diesel-emissions?utm_source=dlvr.it&utm_medium=twitter
Big news, it does mention the government will stay out of this one.
It's probably easier to buy a truck with them already painted. You can have the chrome removed and painted by a body shop... but, I got a quote of $1200 on my last truck for front and back bumpers.
I wouldn't say that assessment is correct. If you search "throttle control" on the forums here you'll find hundreds of threads with users that have had the same issue. It's not one common fix it seems.. some have to have injectors, etc.
Have you tried another dealer? If so, regardless the...
Welcome. Overall on my 8 mile commute (one way) I've never had a problem with regens running. But, I often hop on the interstate for a 1 hour + trip just about every weekend... so I give the truck a chance.