This is disconcerting: whiny diff on the Vette

Kinja'd!!! "ItalianJobR53 - now with added 'MERICA and unreliability" (italianjobr53)
04/20/2019 at 21:00 • Filed to: Z06

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The diff seems to be whining in the Vette while under low load in 5th and 6th (I’m guessing its whining in all the gears but its only noticeable in those 2). It stops whining if im off throttle and under heavy accel (could be that the exhaust is too loud for me to hear it). I did replace the trans and diff fluid today and its still the same :(

It sounds like this, but its much more quieter than that:

I’ll take it to a Vette specialist in Indy this week for a final diagnosis. If it is the diff, I will just drive it as is for a while and see if it gets worse.

Interwebs suggest its around a $1000 to get it rebuilt. Welp.... I would also need to take the entire rear end out of the car to remove the diff. Seems like fun times ahead!

Anyways, have a good weekend Oppo.


DISCUSSION (8)


Kinja'd!!! Demon-Xanth knows how to operate a street. > ItalianJobR53 - now with added 'MERICA and unreliability
04/20/2019 at 21:01

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Likely a pinion bearing.


Kinja'd!!! Jordan and the Slowrunner, Boomer Intensifies > ItalianJobR53 - now with added 'MERICA and unreliability
04/20/2019 at 21:15

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It’s unfortunately a common issue on these cars. Daender knows a guy who has been through 2 of them.


Kinja'd!!! ItalianJobR53 - now with added 'MERICA and unreliability > Jordan and the Slowrunner, Boomer Intensifies
04/20/2019 at 21:17

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Yeah, thats what I’ve read...


Kinja'd!!! E90M3 > ItalianJobR53 - now with added 'MERICA and unreliability
04/20/2019 at 22:42

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Every time I see someone talk about a job like this and see it’s about a grand to repair I think “that’s it? Not bad at all.” I'm not sure if that's a good or a bad thing.


Kinja'd!!! Discerning > Jordan and the Slowrunner, Boomer Intensifies
04/20/2019 at 23:14

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This. I was lucky that mine never went wrong.

I had windows, fuel pump, and BCM go wrong, but not the rear thankfully.


Kinja'd!!! ItalianJobR53 - now with added 'MERICA and unreliability > E90M3
04/20/2019 at 23:19

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Thats a grand if I remove the diff myself , labor is another 700 to 1000 :/


Kinja'd!!! E90M3 > ItalianJobR53 - now with added 'MERICA and unreliability
04/20/2019 at 23:39

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Still not bad.


Kinja'd!!! Manwich - now Keto-Friendly > ItalianJobR53 - now with added 'MERICA and unreliability
04/21/2019 at 14:02

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As Demon-Xanth said, it’s likely the pinion bearing:

https://www.corvetteforum.com/forums/c6-tech-performance/3797226-do-i-need-new-ring-and-pinion-video.html

As as the guy in this video discusses, you can see how to check for it and it might be cheaper to just get a replacement than to rebuild what you have: