I recently changed the cabin filter in my car. Having never done so in my Silverado, I started researching it. Finding nothing on that subject on-line, I called the local dealership: the 2011 Silverad...
I don't have one in my 13 SuperDuty either. It seems the cars/suvs have them. I would think the 1/2 ton trucks would have them, as many are used for daily use passenger vehicles.