almost picked up a Ran 3500 today. looked at a lot. most had a 12,300 GVWR but the last one, it is the SLT also and it only shows as 11,700. why such a big gap. don't know what a 2015 3500 CC ...
Some trucks are ordered with a lower GVWR to allow the owner to register it for less, or even avoid commercial registration. Same truck, just different GVWR ratings.
I know this is the case fir Ford and GM and assume it holds true for FCA trucks as well.