How can I tell what type of hitch do I have?

There are several ways to tell what type of hitch you have. One is to look at the label on the hitch. It will tell you the class of the capacities. If it has a towing capacity of 5000 it’s a class 3. Towing capacity of 10,000 is a class 4or 5. If your receiver is a 2.5” square it is a class 5. If there is no label on the hitch then you should consult a reputable trailer hitch installer to ID it.