dash7510

Due to crazy weather, I have not had a chance to drive mine as much as I would like since I took it out of storage. I do believe I still hear the warble noise, but it is not as easy to hear as it was last year. Chevy knows about it and wants to contact the dealer when I am ready to go in to get it fixed. I have a vacation coming up in early June. After my vacation, I should be due for my next oil change so I will see about getting this looked at during this time.

ersatz928

The C7 diff is designed and made by Linamar.

https://www.corvetteforum.com/forums...sd-issues.html

terry50

I have a 16 c7 base. At 45 mph in 5th gear(automatic trans) i hear something that sounds like a can of bolts comming from the rear end. 9,000 miles on the car, and still hear it. Anyone else with this problem

joemessman

I can't explain it, but mine quit the warble several thousand miles ago. It warbled for about 2K, and then stopped. I have 32,600 miles on the car now. Fortunate I guess. The A8 has never been an issue either.

Highplains

The magic number for the warble sound is 1500 RPM no matter what gear you're in although you're more likely to hear it in a higher gear out on the highway with a slight incline.

KWC6

My dealer replaced the rear axle 2 times. No more issues. A GM engineer said they have new axles that eliminate the noise.

Chevette!?!?

The more that I drive my '16 Stingray, the more I'm convinced the warble is coming from the axle/cv joints, It's almost as if that they have insufficient grease inside them.Thanks for the info! Do you happen to have the new axle part# number?

terry50

thanks guy. Ill be taking it for its 2nd oil change and hopefully i have a guy that knows something, onstead of the janitor......

Highplains

When this mess started, several people on the forum got axles changed out. It seemed to work awhile and then the warble started again. My fear would be, whether its axles or diff or whatever (although I think they've pretty well documented it being the diff) that by not changing to the corrected parts, you're just letting the bad ones wear in improperly. The GM engineer who tested my car said that the diff had gone from warbling at 1500 RPM to warbling all the time. Eventually, he said, I would be experiencing a big "clunk" when shifting because of the ring and pinion experiencing too much play.

bjones7131

The half shaft was the second fix after the npp exhaust they tried on my 16 without any success. Trust me and highplains who were two of the first to complain about this warble, it is the diff. Glad to hear some of you guys got your cars fixed and some had the warble to go away. Continued good success with your vettes.

Rebel Yell

Gentlemen, I know it's in here somewhere, but the thread has grown so big I can find the right post. But, IIRC we have discussed the fact that the diff fluid in the warbler's will have metal shavings. Am I correct? As I said I'm going to have the Service dept. check the fluid when I get the oil changed after I return home, and would like to "Nostradamus" these shavings before they go into the rear end.

Jim

Highplains

The metal is in the diff already. That's where the ring and pinion is. Any diff will have some metal powder from breaking in. Shavings would not be good. I was told my warbling diff seemed to have an excessive amount of silvery metal in it.

Rebel Yell

Thanks for the info. sir, that's what I was looking for. I knew it was something along those lines.

bjones7131

I agree, any time you have rotating mating gears you will have some trace of matalic residue in the diff. Fluid but if you have metal shavings you have already destroyed a rear end. I do remember another member indicating traces in his diff. Fluid. To many post to remember which one it was.

walleyejack

the warblers have flown off into the sunset i think.

Eff A Ford

Until it affects the way the car drives, it's not bothering me.

Strake

Hopefully, it's because most of us who had the Warble have had it taken care of.

In my case, I was one of the very first to seek out forum help on this. In the end, GM Engineering bought our car back to use as Root Cause and Analysis vehicle on how to get to the bottom of it, and come up with a solution for others affected.

We miss our Laguna Blue '16 as that color was no longer offered when GM told me I could factory order anything I wanted. We went with a GS 3LT.

walleyejack

yes, i know you were one of the pioneers on this, just haven t seen anyone post thier results, must all be good.

very nice GS by the way.

Strake

I believe that most all who have gotten the "new" Differential have not had any more issues.

I still (out of habit) listen for the dreaded Warble noise, but I think by getting a car with the eLSD it hopefully eliminated the possibility of getting it again.

walleyejack

nice