After doing a search, I found that the so called LSD on the new Dodge AAM Diff. applies torque only if both wheel can sense load. So in other words, with one wheel off of the ground, the Diff. acts like it is open. Of course ice on pavement would behave the same way as one wheel not touching the ground.
What a big POS! Give me a old fashioned clutch type anti-spin any day. What kind of crack head would have installed a sports car Diff. into a truck designed to work, drive in mud, accross ditches and ice. How I learned the worthlessness of the new Diff. was, while crossing a ditch, one wheel stops touching, and no move. This is the same ditch that I cross with my 200,000 mile anti-spin in the old truck with no problem.
Guess I will be searching for old chey's diff. to replace this junk.