Does my 2010 Yukon XL 1500 have the towing package?

Hello, I am trying to figure out two things. Does my vehicle have the tow package and also how much work is it going to be for me to install trailer brake controller. I don't see any place to plug one in under the steering wheel but maybe I am missing something. Next to the trailer hitch there is a 7-point connector and a sticker that says the trailer weight must not exceed 10,000 lb. Any help would be appreciated. Thanks!