You should not hear the rear end either accelerating or slowing down. Sounds like pinion bearings, it won't get better. Take it in for warranty work. bgKennethS said:It seams like it getting louder. When on the enterstate that I notice it the most. When I let up on the fuel peddle the wine goes away. Is this commen for the 06?Its a 2500 short bed and only has 5000 miles on it.![]()