Ok. I dont' know if this is normal or not, but i just got the truck so i don't know. Say i take off from a stop and the tires spin a little bit it will shif into second a little early and the shift back into first then back into second, from there it seems normal.. Only thing i can think of is that the tires are spinning enough to make the vss read its time to shift, then when it shift and hooks up it reads that it should still be in first gear under WOT in turn shifts back down.. I dont' know if this makes sense, just an idea i had.