Notices
Ask Tadge Post your questions here for Corvette's Chief Engineer Tadge Juechter and then discuss the questions and his answers.

The "Warble Noise"

 
Old 12-30-2018, 01:24 PM
  #41  
blade072
CF Senior Member
Support Corvetteforum!
 
Member Since: Dec 2010
Location: Jefferson Ohio
Posts: 213
Thanks: 0
Thanked 17 Times in 15 Posts
Default

Originally Posted by bjones7131 View Post
I think i read in the original warble post that a guy had the problem on an 18. The warble is not a wind type noise problem. Bad gear set up in differential.
I have the warble noise on my 2019 C7 automatic
blade072 is offline  
Old 12-30-2018, 02:53 PM
  #42  
rmorin1249
CF Senior Member
 
rmorin1249's Avatar
 
Member Since: Sep 2012
Location: Hagerstown MD
Posts: 5,794
Thanked 1,226 Times in 867 Posts
St. Jude Donor '15-'16,'18
Default

It's my understanding that itsi not the gears but the bushings in the axle. My dealer swapped out some parts in my axle and so far the warble is gone.
rmorin1249 is offline  
Old 02-04-2019, 03:10 AM
  #43  
ojulian
Junior Member
 
Member Since: Feb 2019
Posts: 9
Thanks: 0
Thanked 2 Times in 2 Posts
Default

Hello rmorin1249 - I'm new to the C7 Corvette but have extensive experience in modifying MB AMGs. I have a 2016 C7 base w A8 with both shudder & warble. The shudder was resolved with triple flush by dealer. However, the warble returned even after dealer replaced the diff. Seeing this i decided to see what factory fill fluid they are using. When i drained diff, it was like water. I replaced junk factory fill with 3 quarts of "Mobile 1 LS Gear Fluid 75w140. After the fluid change, the warble noise is gone and i have been trying to provoke it for about 200 miles and have not been able to hear it. All of these problems GM is having might be based on incorrect factory fill fluids from the A8 and Diff suppliers. Just my 2 cents. Thanks.
ojulian is offline  
Old 02-04-2019, 07:43 AM
  #44  
Mensan150
CF Member
 
Mensan150's Avatar
 
Member Since: Jun 2017
Location: Eden North Carolina
Posts: 99
Thanked 9 Times in 9 Posts
Default

Originally Posted by ojulian View Post
Hello rmorin1249 - I'm new to the C7 Corvette but have extensive experience in modifying MB AMGs. I have a 2016 C7 base w A8 with both shudder & warble. The shudder was resolved with triple flush by dealer. However, the warble returned even after dealer replaced the diff. Seeing this i decided to see what factory fill fluid they are using. When i drained diff, it was like water. I replaced junk factory fill with 3 quarts of "Mobile 1 LS Gear Fluid 75w140. After the fluid change, the warble noise is gone and i have been trying to provoke it for about 200 miles and have not been able to hear it. All of these problems GM is having might be based on incorrect factory fill fluids from the A8 and Diff suppliers. Just my 2 cents. Thanks.
It sounds like you achieved success with eliminating the warble. If the car is on a lift, how long does it take to complete this task? Is 3 quarts the exact amount required? Would a dealership do this when I have my first free maintenance work done, or would they balk at using a different fluid?
Mensan150 is offline  
Old 02-04-2019, 09:19 AM
  #45  
bjones7131
CF Senior Member
 
bjones7131's Avatar
 
Member Since: Jan 2014
Location: Walhalla South Carolina
Posts: 3,187
Thanked 493 Times in 332 Posts
Default

Gad the fluid change helped. Several have done the same thing with no success. Pretty easy to change and not very costly so give it a shot. Dealer would prob. do the work but not sure how they would react to different fluid. Could get one of the quick lube places to do it. As much noise as we have made about this issue, you can bet GM has already thought of this and tried it, not to throw cold water on your fix. Good luck

Last edited by bjones7131; 02-04-2019 at 09:25 AM.
bjones7131 is offline  
The Following User Says Thank You to bjones7131 For This Useful Post:
Mensan150 (02-04-2019)
Old 02-04-2019, 09:36 AM
  #46  
rmorin1249
CF Senior Member
 
rmorin1249's Avatar
 
Member Since: Sep 2012
Location: Hagerstown MD
Posts: 5,794
Thanked 1,226 Times in 867 Posts
St. Jude Donor '15-'16,'18
Default

I also changed my differential fluid with Mobil 1 gear oil. So far the warble is gone. Not sure if this was the cure or not but so far so good.
rmorin1249 is offline  
Old 02-04-2019, 11:44 AM
  #47  
Mensan150
CF Member
 
Mensan150's Avatar
 
Member Since: Jun 2017
Location: Eden North Carolina
Posts: 99
Thanked 9 Times in 9 Posts
Default

Originally Posted by rmorin1249 View Post
I also changed my differential fluid with Mobil 1 gear oil. So far the warble is gone. Not sure if this was the cure or not but so far so good.
Excellent for you! What was the exact Mobil 1 lubricant that you used? Am I correct in thinking these base C7 automatic Stingray differentials hold right at 2.5 quarts?
Mensan150 is offline  
Old 02-04-2019, 12:02 PM
  #48  
ojulian
Junior Member
 
Member Since: Feb 2019
Posts: 9
Thanks: 0
Thanked 2 Times in 2 Posts
Default

Originally Posted by Mensan150 View Post
Excellent for you! What was the exact Mobil 1 lubricant that you used? Am I correct in thinking these base C7 automatic Stingray differentials hold right at 2.5 quarts?
I used Mobile 1 LS synthetic gear oil. I filled diff with exactly 3quarts of 75w140. I used lift at local shop where I work on my AMGs . It takes about 20 min for drain and fill process.

Thanks and and good luck!

Last edited by ojulian; 02-04-2019 at 12:02 PM.
ojulian is offline  
The Following User Says Thank You to ojulian For This Useful Post:
Mensan150 (02-04-2019)
Old 02-04-2019, 12:28 PM
  #49  
rmorin1249
CF Senior Member
 
rmorin1249's Avatar
 
Member Since: Sep 2012
Location: Hagerstown MD
Posts: 5,794
Thanked 1,226 Times in 867 Posts
St. Jude Donor '15-'16,'18
Default

Same here. Mobil 1 LS Full Synthetic GL5. Took all 3 quarts to completely fill the diff. Friend has a lift so it was easy.
rmorin1249 is offline  
The Following User Says Thank You to rmorin1249 For This Useful Post:
Mensan150 (02-04-2019)
 


Thread Tools
Search this Thread
Quick Reply: The "Warble Noise"


Sponsored Ads
Vendor Directory

Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.