I doubt this is normal since i haven't heard this when i bought it. The jeep is still practically brand new, 2010 with 15000km. It has a manual transmission. Whenever i get into 3rd,4th,5th,6th gear and bring the rpms over 3500, let off the throttle, it makes a whistling/whining noise, once the noise is there, it doesn't matter if i'm on or off the gas. The noise stops once you press the clutch in. I brought the jeep in and they ended up taking the transmission out. They said they replaced a bearing, but the noise is still there, i brought it in again, and the guy told me that it was the softtop and that he fixed it by removing some bump stops, but that guy must be on crack, cause when you press the clutch in, the noise goes away till you release it. Anyone know what could be causing this? This noise is driving me nutz.