2013 break down for truck sales.

Maybe it is just me, but I blame GM 2500/3500 sales (or lack thereof) on their looks. Ram went to the "big truck" look with the bold grills years ago, followed by Ford shortly thereafter. GM stood by with the old look and it is hard to tell on the road with a quick look if it is a 1500, 2500, or 3500. And bigger and badder looks sells whether it means anything or not.
It is the beautiful girl and ruggedly handsome guy that gets the first dates.