The trailer hitch that I have on my truck looks like the same as every other Chevy's. Is that because its a factory thing? if so does anyone know what the class rating is? the truck is a 97 1500 with 3.73 gears, 5.7L short box 4x4

I believe it would be either a class 4 or a class 5 hitch
Class IV = 8000lbs Wt. Capacity
Class V = 15000lbs Wt. Capacity