Here is entire thread concerning the dreaded warble. I am a proud member of this thread. My warble started the day I drove the car home, but for some reason it has nearly stopped on it's own. I'm not sure what will happen since I decided to ignore it, but I am quite sure I will find out if anything does.

https://www.corvetteforum.com/forums...asionally.html

 

 

 

 

I have over 11,000 miles on my 2016 Stingray, and I still have the warble. I was hoping it would have gone away by now I haven't heard of any catastrophic rear end failures yet.

 

 

I authored the Warble post and I haven't heard of any actual failures but if you have bad mismatched gears in the differential that is causing this noise it will eventually eat it self up I assume but that could take a long time or a short time depending on how bad the diff. components are. My car got progressively worse over the yr I had it and the degree of Warble would come and go at times but always there. It just wasn't acceptable to me for what I paid for the car. If the noise doesn't bother you enough to get resolution I suppose it would run for yrs without eating itself up or NOT, who knows. I would like to see a diff. actually torn down and see the gears. Some guy just posted in the last week GM had dealer change out his two diff. half shafts best I could tell from his post and problem fixed so hard to tell exactly what the real root cause is. IF that is factual then it isn't a big drastic job to change them out so that may be an option you guys may want to explore. See the Warbel post for that info. Good luck to all in the fix or toreration.

 

 

I've wondered this myself, a lot of people have reported the warble but nobody has reported it turning into something more serious. I had a set of 4.10 gears installed in a 98 Firebird Formula back in 99 and the installer didn't set them up perfectly so they made a bit of noise but that noise never got worse, it was just an annoying noise.

 

I posted previously that my 2018 MY ,A8, base, ( built late June 2017) had a noticeable warble noise starting on the drive to Florida fall of 2017 and persisted all winter long. I made several recordings on the PDR in order to compare with the video you made.....exactly the same at 1500 RPM during light acceleration..Returning home late April 2018 I took the car into the dealership for "warble "repairs. First step was to drain the differential oil. It was clear but only TWO quarts drained out. Many members have reported discovering factory differential under fills.The correct fill of three quarts was done and the warble has been gone for 3 months now, 1500 miles.Here are some thoughts:
1) I know new fluid or top off to the correct level will not fix a mechanical problem such as a bad half axle shaft, poor ring and differential gear shimming, etc.
2) my theory is that the differential always makes a slight warble sound at 1500 RPM with light acceleration. As in my case the correct fill level buffers the noise whereas an underfill may not. I'll bet that if a "non warbler" had a quart or more removed you would hear a slight noise at 1500 RPM under slight acceleration conditions that could not be heard previously.
3) Two other forum members also reported that their warble went away once the under fill was corrected with new fluid to the correct level
4) For those with the warble I would highly recommend the first action to be taken should be the very easy and non evasive procedure of draining the diff oil, check for metal and pay attention to how much is drained out, looking for an under fill condition.
5) Regarding those cars that have an actual mechanical defect such as a bad half axle shaft or an incorrect ring and pinion gear shim condition the differential noise is going to be loud enough that no amount of fluid is going to make that noise go away.
6) The point of this post is to suggest that if the dealer as a first action does a differential switch out and the problem goes away you will never know if it was in fact a bad differential or just a low fluid condition................just my $0.02

 

Nice summary and good advise. My Warble disappeared when underfill was corrected and has remained that way for 3000 mi.