Wow, just spent 2+ hours reading this forum.
what a wealth of information.
Just registered and glad I did.
just bought a 2015 3500HD LTZ with Bose and navigation and would really like to take advantage of CarPlay and other upgrades to my system.
I am not really sure of all the good that can be programmed into it.
Before I start ordering thinks from eBay should I look at the modules in my truck or can the vin tell me what I have?
Thanks