Rear Differential on 2001 Ford Expedition

There is a whining noise coming from the back side of my 2001 Ford Expedition. It's more apparent when I accelerate the vehicle down the interstate. However, when I release the accelerator the noise lessens. I was told this could be the rear differential. Is this true and how much would something like this cost??

by in Mechanicsville, VA on August 05, 2010
1 answer
ANSWER by on August 05, 2010
bearings bad in rear. about an 800-1000 repair. Roy
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