I don't have a 2500, but my 1500 did have an issue with its CC. It did not apparently fall within any CC recall. I took it to my dealer this summer, and they "replaced the CC switch under warranty". This has fixed my issue for the past 2 months / 2K miles . . . . But they did a software refresh too (for air bag roll-over), so there might have been a refresh on CC response at the same time.
My CC issue was that I'd press the button upper left to turn cruise on, but it wouldn't respond. Ten minutes later, and it would work. IF that first press turned it on, the CC always functioned properly. I experimented, and I also saw that sometimes the 'cancel' didn't work either - but the brake pedal switch always disabled CC.
I am really curious whether the switch was the entire problem or not. It is always possible that the switches just have a 0.0X % failure rate (several in ten thousand, or less), and FCA decided using the same part / parts supplier over multiple years of production was simpler, more predictable, and less costly than redesign with the chance it could turn out worse. A small failure rate that all of us post to the web can seem like a really big number, but the warranty replacements might be way less costly than redesign. I had a 2004 Acura which I owned from new and drove for 320K miles, and I replaced that CC switch twice, both out of my own pocket - so FCA wouldn't be the first to have a switch design issue.