Ok so I noticed that I had a small leak at the fitting on the tranny cooler line that goes into the bottom of the radiator. It's a 90 elbow. I went to see if it was loose and it just popped of completely. Obviously at that point I had coolant and ome fluid leaking out. I had the truck towed to a radiator shop where they swapped the radiator for me. Drove fine for two weeks besides the stalling issue. Until this morning when it started slipping.

Started slipping immediately this morning. Drove down the block. At times the truck wouldn't move at all. After turning it off and back on it found the gear. Drained and refilled with Mobil 1 ATF and a bottle,of Lucas. Drove for 15 miles fine even at highway speed. Started slipping again. Pulled off the highway. Got stuck at an intersection. Turned her off and on and was ale to find gear and the pulled over for tow.