I was pulling my track bar this afternoon, noticed drops of antifreeze on my Trans pan. I traced the drips to the pass. side of block. It took a while to see it but after a fast idle for ten minutes, a pinhole leak right where these blocks are cracking, Bummer. I've got just over 74K, Its a 99 dually. I tow probably 60% of the time but not real heavy. Going to see my dealer tomorrow, they have done warranty repairs before, no problems then even with my "bombing". I looked at the date I took delivery of my truck, 11-4-98, yep, 5yr. up today, ohhh boyyyy.