What is the towing capacity for a 1994 GMC Yukon, 2 door, 4x4 with towing package already installed?

Without knowing what engine you have, you should be able to safely tow 4-5,000 lbs. depending on what class of hitch came with the factory tow package.

you may want to get the spring bars to help stabilize it too- the yukon is a shorter wheelbase, so you don't want it swaying left to right when you get in the wind.

pull one long enough to stick up your fat***

Can my 1995 GMC Yukon hold the weight of 2536 pounds in the back were my 3rd row seats are and drive normal