"16 Ram 6.7 returned towing from Florida. Unhooked, Parked in the garage and a few days later I was going to go for an oil change and it won't start. All it does is click. I have power and the batteri...
I'm with turtle. I think your batteries are done. I have a 2015 with the 6.7 and my batteries went out about this time last year. These engines require a good amount of current to push them, especially if its a little chilly out. Try jumping from another truck and seeing if it starts. That way you'll know for sure... but I'd bet $1 its a battery.