Pull your rear diff. off and check splines on the drive shaft. The outside of the splines should be flat not sharp. If they are sharp replace the shaft, moly lube, follow directions to make sure rear diff. is installed correctly. I had the whine like a nascar under yellow. Got to the point I took it to my dealer and told him to keep it till they fixed it. The lead mech. has been working on ventures since day one, got it back three days later, no noise of anykind since. I had the spline issue, the chirp,and drive shaft, I won't tell you it's as quiet as my wing was but I don't run the radio hardly at all. I would rather listen to the Khromewerk's pipes, and yes they were on when it whined.