I read your question about the cruise control and I will say. That is over my head but if it were me I would check the switches on the wheel and also try and duplicate codes to be sure it really is the CC. Maybe check all physical connections you can too. Seems like plugs and connectors on these...
If you buy ALFAobd software you can change the injector codes to your truck. Will require some research on your part but I have read it is not too difficult.
Bought a 2015 bighorn brand new, I have 62000 miles on it with about 10000 towing miles or so. It has several upgrades to make it mine. I have enjoyed ownership except for a couple inconvenient recalls. I have never seen a check engine light or "thrown a code." I do change oil every 7500 miles...
You may want to do a little reading on modern diesels in general! Here is a little info on DEF to get you started. You definitely don't want to introduce Urea and water into you fuel system!
The eco diesel can be a little temperamental so knowledge is power when it comes to timely maintenance...
https://lucasoil.com/products/fuel-treatments/lucas-fuel-treatment
If this is what you are using the directions clearly say "Lucas Fuel Treatment is formulated for both gasoline and diesel engines",
The consensus is getting a tune that eliminates or creates more efficiency is the single best thing you can do to increase life expectancy of the engine.
Oil Analysis done every oil change could also show any potential problems before they are catastrophic.
Do a search for engine tunes and Oil...
Most people appear to be very satisfied with the GDE tune. I am not sure I have heard any one say "I am sorry I bought the GDE EPA compliant engine and trans tune.
He is telling you that OA's (oil analysis) should give you an idea of the health of your engine. Many people do them each oil change (myself included) but they can be done at more frequent intervals. An oil analysis give you a breakdown of the metals, coolant, or other contaminates in your...