You should be able to find the info you need on the drivers side door jamb. Axel ratings, GVW & GCVW. 36ft is a lot on a 2500. I have a 95 Automat 36ft. with air bags I can keep it level. But on my old 94 the breaks are lacking a little. I plan on a duelly in the near future. That and a Duramax.
Or you could look here http://www.trucktrend.com/features/t...s/viewall.html
All the way down at the bottom
"The Constitution is not an instrument for the government to restrain the people, it is an instrument for the people to restrain the government."
-Patrick Henry
A5150nut
2006 K3500 D/A
94 6.5 4x4 5spd Sold