The reason i believe that it is the rear bearings is that it is an automatic and when i take the vehicle out of gear and coast, the noise level remains constant with the speed of travel. If i rev the engine while the vehicle is in motion( out of gear also) the noise still remains constant and unchanged.The noise increases with speed.My question to you is ,must I remove the rear hubs and press out the bearings,and or can I leave the rear hubs on the vehicle and use a bearing puller to remove the existing bearings and simply install a new set of bearings in their place.