I posted a thread several weeks ago about a whining heard in my 1996 LT4. I thought it was in the 6 speed tranny. After closer inspection and testing, it appears to actually be coming from the rear end. There is less than 11,000 miles on the car. The whine is most noticeable at 65 to 70mph, although you can faintly hear it at lower speeds. The volume seems to vary with the temperature of the air outside. The hotter it is, the louder it whines. Any thoughts? Thanks.