I thought I'd post some info. I gathered from different state Gov. websites. Since I am trading in my 10k gvw trailer for a 14k Gvw, I wanted to make sure I didn't need a CDL. According to the Michigan, Maryland and Pa. websites you only need a CDL if your trailer is over 10K AND your GCWR is over 26K. My Dodge 3500 srw(9900lb) can tow a 14k trailer and stay under this limit. Dodge lists the GCWR for my truck at 23K so as long as my truck isn't fully loaded, I'm good there too. I did replace the factory hitch with a class V. So as long as I drive carefully, I'm safe, legal and within the manufacturers limits.