I have an 06 1500 Express I bought used a couple months ago. It mad a loud noise, shook & vibrated. I replaced the U Joints and yes they were VERY bad. That helped "some" but still had noise, up to 55/57 MPH it was barely noticeable but by the time you hit 65 it sounded like an airplane.The tires were snow tires so today I got brand new tires installed. Once again the noise is a "little" better but still... 60+ MPH it sound like an airplane inside! The vibration is a very high frequency. Any suggestions?

Thanks!

 

inspect your differential and motor mounts