Thanks @Brent - I've made the decision to replace the camera myself. I looked up the part numbers on Mopar's website, and since my RAM doesn't have the surround view cameras, replacing the rear camera only costs $100 (CDN). At this point, I'd rather replace the camera myself than go through the trouble of convincing the Service Advisor at the dealership that it is the culprit, and have them replace parts that isn't faulty, possibly causing more issues and/or scratching up the interior of my new truck.3 degrees Fahrenheit this morning in Minnesota, mine is still working. Camera replaced in March 2019.
Once I replace the camera I'll provide an update.
FWIW - I looked up the camera models for both JL Wranglers and DT RAM 1500s. It looks like there was a hardware part revision for both, most likely the original being problematic.