Thanks Hillbill
I am going in to pick the truck up today, the guy at Amco said no charge they did not find anything, but said if it happens again to bring it back, from what they told me on this model /year the speed sensor is mounted on the rear end, I may take it into a local guy that dose pretty good work, I talked to him, he said if it acts up again, bring it in and he would pull the plate on the rear end and see if he could find the gremlin. Just glad it may not be the Tranny, that gets expensive fast. If I ever find the problem, I well post the problem.