just a quick question...a few times over the past winter months i noticed an unusual sound comin from the ol DMAX. it was almost like an out-of-sinc rattle. may sound weird...but right as the tranny is about to shift, it almost sounds like its hangin up for a sec, and to be honest, it sounds like a Cummins rattlin for a split second....then it shifts normally and its fine. usually only the low gears, 1 and 2. maybe occasionally goin into 3. seems to only happen on cold mornings or after sitting for a few days. like i said, its only happened a few times the last 2 months or so. any ideas??