Thank you for your photo and for providing the important details about your towing setup. I'm glad to help.
A weight distribution/sway control hitch setup is recommended whenever a loaded trailer's weight is more than half of the weight of the tow vehicle. Your tandem axle Puma Palomino and Yukon combination certainly qualifies.
Addition of a properly-rated weight distribution/sway control system (WD/SC) will enhance both the driving experience and your safety on the road. These systems... view full answer...