My tranny has started doing something very strange on me. Just today, right before I come to a complete stop, 5 mph, it downshifts to first very abrubtly. It has never done this before and the chip I am running now does not adjust the shifts at all. Nothing has been changed on the truck lately. The truck has 12,700 miles on it. Any ideas??

Thanks!!

 

Pull the chip and see if it still does this. Or you might want to go over to www.nloc.net and go to Factory_Tech section. He is our resident tranny expert