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2014 Grand Cherokee limited Rear Diff noise

2.6K views 5 replies 5 participants last post by  stumblinhorse  
#1 ·
My rear differential started making a whining/humming noise only when doing 70+ mph. It only hummed when I was on the gas and would stop when I came off accelerator. It's now really bad. Starts at low speeds and whines only when accelerating or on the gas.

205,000 miles. Is this as easy as a bearing replacement or entire rear diff?