i have an 01 dodge ram 360 4x4 auto trans the truck has a bad vibration in around 45-55mph ive checked the trans mount and all 4 u joints and theyre fine the truck only has the vibration in that speed range usually when it starts i can punch it and the vibration quits im thinking it maybe the overdrive goin out i was just wondering if anybody else had this problem or maybe know what it is or what to check for
