2016 differential noise

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Aug 21, 2017 | 04:43 PM

#41

HDSE110

8th Gear

Joined: Aug 2017

Posts: 8

Likes: 0

Quote:

Originally Posted by Red-C6 of Jax

I have a 2015 A8 with 30K miles. That's exactly what my car is doing. To hear the whine noise you have to find a real smooth road surface because on other surfaces the tire noise is too loud to hear the whine. Had the corvette tech ride with me and he said that I need a new differential and one has been ordered. Looks like the rear diff problem has been around for sometime.

mine will make noise anytime i accelerate slightly, i have an arbitration hearing coming up in the next week or so. i want them to buy back. To replace the diff. they said the whole back of the car has to be dismantled, the rear fascia, exhaust system, suspension, inside the hatchback, everything under the rear of the car. i don't really want the car after that molestation.

Aug 29, 2017 | 09:23 PM

#42

Arctic C7

Cruising

Joined: Mar 2016

Posts: 13

Likes: 8

Quote:

Originally Posted by HDSE110

You got a different story than I did. I was talking to one of the tech's a couple of weeks ago and he said it was fairly simple and they didn't need to take any panels off. The car was on the lift and he just pointed up and said it comes out really easy from below. This was on a base A8 with the normal differential (not eDSL).

I am taking mine in on Friday to hopefully get them to agree that the noise is from a bad differential.

Best of luck to you.

Aug 29, 2017 | 09:37 PM

#43

rmorin1249

Le Mans Master

Joined: Sep 2012

Posts: 7,146

Likes: 1,940

From: Hagerstown MD

St. Jude Donor '15-'16,'18

My dealer tells me the noise is normal for a Corvette. At this point I'm going to live with it. The rear half of my car has already been disassembled once for a fuel leak and torque converter replacement. Out of service for 30+ days. I'll be trading the car before my warranty expires. My Corvette ownership experience has been a disappointment.

Aug 29, 2017 | 09:46 PM

#44

TEXHAWK0

Le Mans Master

Joined: Sep 2003

Posts: 8,847

Likes: 795

From: Longview Texas

Quote:

Originally Posted by ersatz928

My 2017 GS was 4 ounces low, I know, not that much...but why can't the factory fill these properly?

If you check the service manual, the correct level can be as much as 1/2" below the fill hole. The differentials come from the manufacturer already filled with fluid... I think they may be just trying to save a few ounces of fluid on each car!

I don't think many, if any, dealers check the diff. fluid level as part of the PDI. Even so, if it is within 1/2" of hole, that would not be considered low.

My 2014 was almost a half quart low, which is a lot considering the capacity of the differential is only a little more than 2.5.

Last edited by TEXHAWK0; Aug 29, 2017 at 09:52 PM.

Aug 30, 2017 | 06:10 PM

#45

HDSE110

8th Gear

Joined: Aug 2017

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Quote:

Originally Posted by arctic c7

you got a different story than i did. I was talking to one of the tech's a couple of weeks ago and he said it was fairly simple and they didn't need to take any panels off. The car was on the lift and he just pointed up and said it comes out really easy from below. This was on a base a8 with the normal differential (not edsl).

I am taking mine in on friday to hopefully get them to agree that the noise is from a bad differential.

Best of luck to you.

i hope you are right that it doesn't have to be completely disassembled. I made an appointment for sept. 5th to have it replaced. My arbitration is on the 7th. I think it is just the elsd rear ends. One dealer said they got a bunch of bad ones from australia. I think i could do without a lot of this electronics they are putting on these new cars.

Mar 18, 2018 | 05:29 PM

#46

Guitarman430

Heel & Toe

Joined: Aug 2017

Posts: 16

Likes: 0

Differential Noise in 2017 Grand Sport

I have a 2017 Grand Sport with Automatic Trans. On banked turns the rear end makes a loud droning noise that has me concerned. Runs great otherwise. I’m going to bring it to KY dealer’s attention.

Has anyone had similar issues and found the problem and solution for it?

Last edited by Guitarman430; Mar 18, 2018 at 05:31 PM.

Mar 18, 2018 | 07:20 PM

#47

HDSE110

8th Gear

Joined: Aug 2017

Posts: 8

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Quote:

Originally Posted by Guitarman430

my 2016 would make a whoop whoop type noise from the rear, took it to three dealers, first one had to call tech support, after lubing the exhaust tail pipe valves that didn't resolve it, they told the tech to replace the rear differential. it took it to dealer #2, the tech said it was just the exhaust and not to worry about it. friend knew a mechanic that owned corvettes and works on them, he said the rear diff. is bad, that gm got a bad batch from a supplier. took to dealer #3, he described the noise exactly without even going for a ride, went for ride, he verified diff. was bad, he had changed one two weeks earlier. fought with gm to buy back car even with bbb arbitration, naturally lost case and dealer replaced diff. they knew of these bad diffs out there and still sold the cars, letting the customer stuck with a car that had the whole rear of it dismantled, the only thing left in the car was the transmission. everything else had to removed including the rear fascia, exhaust and suspension. it seems ok after the repair, but i only put a couple hundred miles on it since then. they said the ring gear in mine was not properly shimmed. very disappointed in gm for selling the cars with known bad differentials.

Mar 18, 2018 | 09:55 PM

#48

HDSE110

8th Gear

Joined: Aug 2017

Posts: 8

Likes: 0

Quote:

Originally Posted by BELVIN20

Rear end whine & noise has been a common problem is some 2016 Vetts. I have had one myself, 2016Z, rear end replace under warranty. You may need to find the right dealer to get it corrected. If the rear end has a wine, it will need to be replaced. Just in my area, I know of 4 Vettes that have the rear ends replace. There has also been cases of the rear end that was not full of lubricant, as mine was one of those, but found out too late. If the rear end is whining now, filling the lubricant will not help now.

i have a 16 c7 also, i took it to three dealers, first one had to call tech support, they tried to lube exhaust tail pipe valves ,then told the dealer to replace rear diff.. 2nd dealer sad noise was not a problem, 3rd dealer said rear diff is bad and gm knows about it. ended up having to have the diff. replaced. they knew of the problem but didn't want to recall the bad ones to replace the diffs.. apparently the ring gear was not properly shimmed from the vendor that builds the diffs.just like the ignition problem they had, but no one has gotten killed from the bad diffs.

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Mar 25, 2018 | 10:20 AM

#49

terry50

Instructor

Joined: Apr 2015

Posts: 143

Likes: 15

From: SPRING HILL FLORIDA

I have a 16 stingray. They flushed the rear end twice, same noise. Went to another dealer, said the noise is not enough to fix it, going to another chevy dealer next week. Getting real tired of going from dealer to dealer, sent marry barr many e- mails, no response. A secretary of hers called, and read off a sheet mary gave to her, should of bought a mustang

Mar 25, 2018 | 10:46 AM

#50

HDSE110

8th Gear

Joined: Aug 2017

Posts: 8

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Quote:

Originally Posted by terry50

if there is any unusual noise from the differential that they say isn't bad enough but still there, that means the problem is still there, what do they want to do? wait until the warranty is up. if they try three times to repair it, the lemon law should make them buy it back, at least that is the way it is in pa. if they worked on the same problem twice already, the third time they have to fix it and satisfy you that it is fixed. you can always file a complaint against them with your states attorney generals office. sometimes that will get their attention and show them you aren't going to let this go away. good luck and let me know what happens.

Mar 25, 2018 | 10:54 AM

#51

terry50

Instructor

Joined: Apr 2015

Posts: 143

Likes: 15

From: SPRING HILL FLORIDA

Quote:

Originally Posted by HDSE110

taking it in next week, let you know.......thanks

Mar 25, 2018 | 12:54 PM

#52

bjones7131

Safety Car

Joined: Jan 2014

Posts: 4,496

Likes: 856

From: Walhalla South Carolina

What HDSE said. This is the way my buy back went down.

Last edited by bjones7131; Mar 25, 2018 at 12:57 PM.

Mar 25, 2018 | 01:12 PM

#53

C5Driver

Racer

Joined: Nov 2004

Posts: 489

Likes: 174

Quote:

Originally Posted by Guitarman430

Im having this same issue EXACTLY!

Mar 25, 2018 | 07:55 PM

#54

terry50

Instructor

Joined: Apr 2015

Posts: 143

Likes: 15

From: SPRING HILL FLORIDA

Quote:

Originally Posted by c5driver

im having this same issue exactly!

the shop manager that rides with me says he doesent hear anything un usual, but i do, getting real tired of their ****

Mar 26, 2018 | 09:33 AM

#55

Red C8 of Jax

Safety Car

Joined: Sep 2001

Posts: 4,495

Likes: 1,263

From: Jacksonville FL

Quote:

Originally Posted by terry50

I had the rear end whine noise and the corvette tech said I needed a new differential. New diff installed and had the same rear end whine. Took car to my favorite tire repair shop and a tech went for a ride with me and said the rear end noise was my original tires which were chunking on the inside. (had 30K miles on them) New rear tires installed and no more rear end whine.

Mar 26, 2018 | 09:56 AM

#56

terry50

Instructor

Joined: Apr 2015

Posts: 143

Likes: 15

From: SPRING HILL FLORIDA

[QUOTE=Red-C6 of Jax;1596860558]I had the rear end whine noise and the corvette tech said I needed a new differential. New diff installed and had the same rear end whine. Took car to my favorite tire repair shop and a tech went for a ride with me and said the rear end noise was my original tires which were chunking on the inside. (had 30K miles on them) New rear tires installed and no more rear end whine.[/QU

MY CAR HAS A WABBLING NOISE, THREE DEALERS LATER, CASTROLIA CHEVY, REGISTER CHEVY BROOKSVILLE FLORIDA, AND NOW CHRYSTAL RIVER THIS WEEK, WILL SEE WHAT THEY SAY, GETTING TO BE A JOKE WITH GM, AND MARRY BARR THE GM REP, NEVER GOT A HOLD OF ME. TERRY

Mar 30, 2018 | 09:42 AM

#57

terry50

Instructor

Joined: Apr 2015

Posts: 143

Likes: 15

From: SPRING HILL FLORIDA

TOOK MINE TO TWO DEALERS AND BOTH SAID EITHER THE NOISE IN NORMAL, OR THEY DIDNT HEAR ANYTHING. WENT TO ANOTHER DEALEE THIS MORNING. THE CORVETTE MECH WENT WITH ME FOR A RIDE, AND AT 1500 R.P.M IN 7TH GEAR, TYHE NOISE STARTED. GOING TO SEND a GM ENG. TO THE DEALERE TO LOOK AI IT. LET YOU FOLKS KNOW WHAT HAPPEND

Mar 30, 2018 | 02:55 PM

#58

bjones7131

Safety Car

Joined: Jan 2014

Posts: 4,496

Likes: 856

From: Walhalla South Carolina

Quote:

Originally Posted by terry50

u may have the famous warble noise that is present at 1500 rpm on slight incline when lightly increase throttle. Check the warble post for a lot of info.