Tow Vehicle - what to do

We have a 2007 Dodge Ram 2500 w. Cummings diesel (mega cab). It has had some quirks over the years. The biggest was turbo work that thankfully was still under warranty - $5000. Then there were minor irritations with electrical system, Jake brake issue, dead radio needed replacement (with Sirius), part of the dash board lights dead (never replaced because of $250 estimate), exhaust system (replace from muffler thru tailpipe with only 50,000 miles). In addition were the normal expected wear and tear items, brakes, tires, etc. The engine itself will outlive me, but the body and other items just keep coming - especially in the northeast with all the salt and brine on the roads. The truck only has 110,000 miles (new in my book). Today the engine light came on yet again. We do a lot of heavy driving every year pulling our 27ft. AS with 4 to 5 people on board in the cab, normally from Vermont to Florida and points west to the Rockies from Banff to Estes, or points north to the Canadian Maritimes. The last thing I want is failure on a 7000 mile trip, stranded in the middle of nowhere. The question is, do I keep shoveling parts into the “beast”, or do I start looking for a new TV. I am definitely looking at staying with a diesel (2500/250 size) How are you GMC, Chevy and Ford diesel people doing with your vehicles - both big and small issues? Ram people, I’d like to hear from you too.