RDU causing vibrations?

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1sloblusho

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Happy Saturday all,

Pardon me if the questions I’m asking may have been covered elsewhere but I couldn’t really find anything. I may have over looked something in my many searches this weekend. I have a 2012 non PP with just over 71k miles that I’m getting a vibration that vibrates the whole car from about 50 and up to 100 (don’t know about anything higher than that since I haven’t taken it higher since it started doing this). It’s a pretty decent vibration that will shake drinks in the cup holders. It stays pretty much about the same doesn’t really increase or decrease with speed until I get below 50. Under load doesn’t matter, 80mph shift to neutral same thing. The tires have less than 500 miles on them and brand new rotors all the way around. Took other advice and put it in the air and checked all the front and rear cv axle boots they all look good, checked all suspension components and wheel bearings. I’ve read about the RDU’s having pulsing vibrations at certain speeds but that doesn’t seem to be the same. It also varies sometimes it’s harder than other times all at the same speeds though. I’m running out of options and wondering if anyone has had this issue and if it were something I may have over looked, I also don’t think the rear diff/ RDU has had its fluid changed and I am planning that in the next month as well as the PTU. Any advice or direction to a thread that has it would be appreciated.
 

yaycandy

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Put front wheels on the rear. See if its still there.
Or get an alignment. At speed the bearing could cause vibration from the wheel being out a bit. And the bearing will look fine when inspected
 

SeanDev

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Maybe check your driveshaft. The carrier bearing might have failed causing driveshaft to vibrate hard at high speeds.
 
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