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6F24 six speed auto stick --2015 Patriot Rear Drivetrain/Differential "bearing " noise?

2.2K views 1 reply 2 participants last post by  Sandstone  
#1 ·
Around 90,000 miles I heard a whirring/rumble noise from somewhere towards the back of my Jeep. Thinking it was a bearing issue, I changed BOTH rear hub bearings driver and passenger side. Still no reduction in noise level. As rpm, vehicle speed increase so does noise level, sometimes the noise will vary/oscillate as if the bearing load was increasing decreasing!

A passenger friend riding with me said, "You have bearing problems!" I replied, "Are there other bearings back there besides the hub bearings (out side of the rear differential) ?"

I said I had changed both hub bearings what else could it be? A bent wheel? Oh and gas mileage is suffering somewhat as well. Not serious but enough to realize I'm getting the MPG i was getting.

Any thoughts/input?

Is there any known problems with the rear drivetrain at this mileage?

What is the "drivetrain warranty" for this 2015 Patriot. . . 100k by any odd chance? I'm at 99,000!
 
#2 ·
Presuming you have a 4x4, has the RDU (rear drive unit) fluid been checked/changed? The factory service schedule calls for changing the fluid at 5 years/60k for both the RDU and PTU.

If you're a DIY'r here's a good write-up on it: