Trailer Sway Help

[taylorbg]

We towed the boat this weekend with my dad's 2500 and had no problems. I have purchased a 5.5 inch drop ball for the suburban to see if that helps. I think this will solve the issue, but will take it slow to test. I have also purchased a new redhead gear box to replace the old worn box. I won't be towing until I get that replaced also.

Thanks guys.