The "Warble Noise"
12-30-2018, 12:24 PM
#41
Instructor
12-30-2018, 01:53 PM
#42
Le Mans Master
Member Since: Sep 2012
Location: Hagerstown MD
Posts: 6,876
Received 1,738 Likes
on
1,174 Posts
St. Jude Donor '15-'16,'18
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.
02-04-2019, 02:10 AM
#43
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.
02-04-2019, 06:43 AM
#44
Instructor
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.
02-04-2019, 08:19 AM
#45
Safety Car
Member Since: Jan 2014
Location: Walhalla South Carolina
Posts: 4,450
Received 845 Likes
on
592 Posts
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 08:25 AM.
The following users liked this post:
Mensan150 (02-04-2019)
02-04-2019, 08:36 AM
#46
Le Mans Master
Member Since: Sep 2012
Location: Hagerstown MD
Posts: 6,876
Received 1,738 Likes
on
1,174 Posts
St. Jude Donor '15-'16,'18
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.
02-04-2019, 10:44 AM
#47
Instructor
02-04-2019, 11:02 AM
#48
Thanks and and good luck!
Last edited by ojulian; 02-04-2019 at 11:02 AM.
The following users liked this post:
Mensan150 (02-04-2019)
02-04-2019, 11:28 AM
#49
Le Mans Master
Member Since: Sep 2012
Location: Hagerstown MD
Posts: 6,876
Received 1,738 Likes
on
1,174 Posts
St. Jude Donor '15-'16,'18
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.
The following users liked this post:
Mensan150 (02-04-2019)