I've had my "600" for about a week ( absolutely love it). However, I'm getting a slight howl from the rear end ( between 15 and 20 mph) after I get passed 20 mph it stops. Also when I'm slowing down , when I hit 20 mph it starts the howl until I reach 15 mph. It is extremely noticeable on cold morning whan the vehicle first moves( even after proper warm up. Today I had the service tech take a look and he heard the Howl. However he couldn't locate the noise. So, I'm dropping the truck off Wed. night and theTech will look at it Thurs. morning ( after sitting over night). The tech thinks it might be coming from the rear Diff.
Anybody have a similiar "howl", if so, what was it? Any suggestions would be greatly appreciated.

Thanks
Odie

 

There are a lot of us having the same problem with the '03's and '04's. If you look back through the old threads, you'll find a lot of discussion, and not too many solutions.