yea i was talking to my buddies dad who owns a transmission shop and he said most likely the rear u-joint so im gonna take it in and were gonna pull the driveshaft and have a look

 

My ram has recently developed the same bouncing or skipping when accelerated from a stand still. I was told a few weeks back that the rear driver side U joint could be replaced. Does anyone know if the U joint can in fact cause this symptom of skipping or bouncing? It goes away by 5 or 10 mph.