Okay, that's strange. The shaft isn't solid (otherwise it would weight a ton), but it is sealed. You are probably just hearing a sound that has been resonated & amplified to that point of the shaft, as in that sound is not really coming from the center. You are probably better off pulling it or have someone else pull it & check the u-joints and the yoke.mark5740 wrote:It is not coming from the rear end or universal joints or transmission. It is coming from near the center of the driveshaft.!!!!!!!!!! Is the drive shaft solid?