I still say check with your dmv as it appears the changing gears website is not necessawrily correct. Although the way it's written in NC is about as clear as mud.
This is from NC DMV
Class C drivers license- Required to operate any single vehicle that is not carrying hazardous material in quantities required to be placarded or is designed to carry no more than 15 passengers including the driver with a gross vehicle weight rating (GVWR) of less than 26,001 pounds; or any vehicle towing a vehicle which has a combined GVWR of less than 26,001 pounds operated by a driver at least eighteen years old.
Most drivers need only a Regular Class C license to operate personal automobiles and small trucks.
Class B drivers license- Required to operate any single vehicle with a gross vehicle weight rating (GVWR) of 26,001 pounds or more that is exempt from CDL requirements, or any such vehicle while towing another vehicle with a GVWR of 10,000 pounds or less.
Class A non-commercial drivers license- Required to operate any combination of vehicles exempt from CDL requirements with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, provided the GVWR of the vehicle(s) being towed is greater than 10,000 pounds.
Reading this I might need to get a class A non-commercial license for my fiver with a 13k gvwr.
2014 Crew Cab Chevy Silverado 3500 4wd Duramax/Allison
2014 Sabre 34REQS-6