The Stovebolt Site Forums The Parking Lot '60-'66 Trucks What doew the DD on a '60-'66 Chevy VIN tag mean?

tclederman:

Thanks for the reply, but this is on several of the light-duty '60-'66 Chevy trucks I have, including C10, C20, C30, K10 & K20 models, which are not considered forward control models. I am trying to find a reference to it in any of my Truck Dealer Manuals, Silver Books, etc., to no avail.