Transmission Shutter
Thread Starter
Le Mans Master
Joined: Sep 2006
Posts: 9,593
Likes: 959
From: Palm Harbor not far from Sebring Florida
St. Jude Donor '11
Oldtimer
Transmission Shutter
I know there have been some post on this subject and there was or is a solution to it my having the dealer drain and fill it with a different type of fluid. My question is I noticed the other day while driving on the interstate going to a show while cruising along, I would feel a little shutter almost like driving over small rumble strips. Not a big shutter just a very slight feeling. It seemed many times it happened when I accelerated or let off the gas just a little. Is this the transmission shutter that is known to happen in the 2015 and is it a dealer fix.
Heel & Toe
Joined: Nov 2021
Posts: 21
Likes: 11
From: Knoxville,TN
$962 for the triple flush at my dealer. (599 labor) (224 fluid ) (30.92 filter) tax/shop supplies etc .There are no mechanics available anywhere and mine took almost a week just to change the fluids. Shifts way smoother now.
Mine was only 2 months out of warranty.
Mine was only 2 months out of warranty.
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
Team Owner
Joined: Aug 2006
Posts: 25,105
Likes: 3,155
C6 of Year Finalist (appearance mods) 2019
My 2016 shuddered at city speeds but never at Hwy speeds. Almost undriveable. The flush fix worked like a charm. Added a Range device for extra measure and to stay out of 4 cylinder mode. Who wants a 4 cylinder Corvette?
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
I know there have been some post on this subject and there was or is a solution to it my having the dealer drain and fill it with a different type of fluid. My question is I noticed the other day while driving on the interstate going to a show while cruising along, I would feel a little shutter almost like driving over small rumble strips. Not a big shutter just a very slight feeling. It seemed many times it happened when I accelerated or let off the gas just a little. Is this the transmission shutter that is known to happen in the 2015 and is it a dealer fix.
Elmer
Thread Starter
Le Mans Master
Joined: Sep 2006
Posts: 9,593
Likes: 959
From: Palm Harbor not far from Sebring Florida
St. Jude Donor '11
Oldtimer
Ok, so I just purchased this car (2015 3LT A8) about 4 weeks ago. I never noticed the shudder around town that I can remember, but this past weekend I went to a Corvette and Chevy show so I was on the interstate almost the entire way. At first, I simply thought it was the road that caused the shudder or slight vibration. Then I realized it happened more than once and if I remember correctly, it seemed to do it whenever I accelerated. I did however purchase a bumper-to-bumper platinum extended warranty. I doubt the triple flush would be covered under it, but if the transmission goes south, I am covered. I did not see the flush on the Carfax and the last owner had all her records in a binder in the car when I bought it and nothing on that. It did go back to the dealers for a transmission issue about 4 years ago for a hard engagement when shifting into reverser.
Instructor
Joined: Jun 2014
Posts: 167
Likes: 23
I have a 2015 C7, did the triple flush in 2018 , never had a problem since then.
I don’t remember the Dealer cost , but never sorry I did it.
actually my neighbor had it done , and I followed his lead.
good luck.
I don’t remember the Dealer cost , but never sorry I did it.
actually my neighbor had it done , and I followed his lead.
good luck.
Safety Car
Joined: Mar 2009
Posts: 4,101
Likes: 719
From: Northeast MA & Mad Beach FL
https://www.corvetteforum.com/forums...round-1-a.html
Check out this thread on Lubegard.
I started to have a shudder with light throttle in slow traffic at 25,000 miles and used 2oz Lubegard Shutter Fixx and it stopped the shutter.
After that I added 10 oz bottle of Lubegard Platinum 63010 Universal ATF Protectant.
Since then I've put on just over 6,000 miles and still going strong.
Check out this thread on Lubegard.
I started to have a shudder with light throttle in slow traffic at 25,000 miles and used 2oz Lubegard Shutter Fixx and it stopped the shutter.
After that I added 10 oz bottle of Lubegard Platinum 63010 Universal ATF Protectant.
Since then I've put on just over 6,000 miles and still going strong.
Racer
Joined: Dec 2005
Posts: 492
Likes: 31
From: NJ
Just had triple flush done last week at the dealer. Free of charge for me but mines a ‘19 under CPO warranty. I’ve heard some have had success having the service covered even if out of warranty if the dealer can see in the records it’s never been done before on that car. There is an actual TSB for this so print that out online and bring with you to the dealer or make it known when you call that you know this is a known issue and exactly how to fix it. Good luck. Also get a Range Technologies AFM disabler for $220 and keep plugged in from now on.
Team Owner
Joined: Jul 2004
Posts: 28,357
Likes: 3,253
From: Hartford WI
I think price isn't a good way to go about this since hourly rates can vary, Make sure they have the equipment to do it first. See it if possible. Make sure they have the Corvette certified tech and not some quick lube guy.
Le Mans Master
Joined: Feb 2011
Posts: 5,783
Likes: 400
From: Paoli, IN
St. Jude Donor '17, '19
It it only happens at highway speeds and when slowing or speeding up, could it just be his car engaging/disengaging v4 mode? I can tell when my car switches....there is a little bump feeling. I suppose one could described it as a shutter. I am not really sure what a shutter feels like though.
Team Owner
Joined: Aug 2006
Posts: 25,105
Likes: 3,155
C6 of Year Finalist (appearance mods) 2019
It it only happens at highway speeds and when slowing or speeding up, could it just be his car engaging/disengaging v4 mode? I can tell when my car switches....there is a little bump feeling. I suppose one could described it as a shutter. I am not really sure what a shutter feels like though.
Melting Slicks
Joined: Feb 2018
Posts: 2,126
Likes: 1,012
From: North Texas
Anyone that had the flush before Feb 2019 most likely did not get the latest Mobil 1 Blue label ATF fluid.
Thats when it became available.
You need the Blue label fluid to properly fix the issue.
Thats when it became available.
You need the Blue label fluid to properly fix the issue.
Le Mans Master
Joined: Nov 2015
Posts: 7,382
Likes: 3,500
From: Lake Havasu City Arizona
Yes. And that Feb 2019 date is the build date of the transmission. Not the car build date on the door. The build date of the transmission is stamped on the transmission.
Burning Brakes
Joined: Apr 2015
Posts: 1,055
Likes: 277
From: Chattanooga, TN
Ok, so I just purchased this car (2015 3LT A8) about 4 weeks ago. I never noticed the shudder around town that I can remember, but this past weekend I went to a Corvette and Chevy show so I was on the interstate almost the entire way. At first, I simply thought it was the road that caused the shudder or slight vibration. Then I realized it happened more than once and if I remember correctly, it seemed to do it whenever I accelerated. I did however purchase a bumper-to-bumper platinum extended warranty. I doubt the triple flush would be covered under it, but if the transmission goes south, I am covered. I did not see the flush on the Carfax and the last owner had all her records in a binder in the car when I bought it and nothing on that. It did go back to the dealers for a transmission issue about 4 years ago for a hard engagement when shifting into reverser.
Do you have the GMMP extended warranty? If so, I was able to recently have the triple flush performed for $0 out of pocket. The dealership will need to submit the warranty claim for approval via the online GMMP portal. They typically approve within 1-2 days.
I'm glad it was covered because I was quoted $850-1200.
The triple flush completely fixed the problem!
Also recommend installing the Range AFM Device.
Tech Contributor
Joined: Oct 1999
Posts: 41,013
Likes: 9,775
From: Charlotte, NC (formerly Endicott, NY)
Bill