FCA can't do anything to fix this right now. They are (hopefully) manufacturing replacement parts that will probably include a replacement intake (not plastic, hopefully) and possibly new EGR cooler. In the meantime, it is IMPERATIVE that you keep a close eye on your coolant level. Keep it topped off (WITH THE CORRECT COOLANT - IMPORTANT - MIXING TYPES MAKES GOO), and if your level is declining regularly, take it to the dealer to have the EGR cooler cleaned, at least. They may know of something else to do as a stop gap between now and whenever FCA issues the fix - probably in six months, they are saying.
My 2016 w/36,000 on it has been in the shop for 47 days so far. The intake melted on October 11th, but fortunately (or not), the truck did not catch fire. Got a "service electronic throttle control" message, tons of white smoke, and limp mode while on the Interstate at 75 mph. Was able to immediately take an exit and stop, which probably saved me (or not) from the fire. So far, all repairs have been under warranty, (new turbo, new EGR cooler, multiple new sensors, update software, new fuel filter (they always suspect the fuel, knew it was okay but replaced the filter anyway), but the truck still doesn't run right. Drove it 2 miles after they said it was fixed, and the check engine light came back on. Back to the dealer it went.... Had been having to regen the exhaust filter every week for a month before the event happened. Did not know/think at the time to check coolant level regularly.