A8 Transmission failure tracking
Racer
Joined: Sep 2007
Posts: 318
Likes: 81
From: Phoenix AZ
I updated the Model column (Z06) I have about 6200 miles with no issues. I drive the car in auto mode and paddle shift mode depending on the type of driving I am doing. If in auto mode I will down shift with the paddles when going into a tight curve to hold the gear I want through the curve. Again no issues with any modes. When driving in traffic going up a steep grade (mountain driving) I use paddle shift mode to keep the transmission from searching for the right gear depending on load. I would say this is the biggest problem with the A8 for me personally...But can be avoided if you use the paddles.
Instructor
Joined: Nov 2015
Posts: 167
Likes: 23
From: Terrell, NC
I also updated the model and added a comment in the "No Failure" cell indicating that I'm currently at 12.7K miles error free. Current Mileage might also be helpful for those that aren't seeing any problems.
Racer
Joined: May 2014
Posts: 318
Likes: 49
From: Mt. Juliet TN
Should there be a choice for shudder and if the transmission fluid triple flush fixed it or not? That's the problem I have and it goes in next Friday to see what they say about it. I don't guess it's a failure, but man is it annoying!
Team Owner
Joined: Oct 2004
Posts: 25,583
Likes: 16,942
I would suggest that rather than posting, "mine's great" or "mine sucks," just update your info in the OP's spreadsheet. If you're not there, add yourself.
We don't need to go through endless posts here as we have in the past. The only interest here is in a large data pool, not individual testimonials.
We don't need to go through endless posts here as we have in the past. The only interest here is in a large data pool, not individual testimonials.
Last edited by Foosh; Jun 9, 2017 at 04:09 PM.
Instructor
Joined: Nov 2015
Posts: 167
Likes: 23
From: Terrell, NC
I agree Foosh, but I think if there was a column for current mileage with NO problems it would be helpful. This is what people are adding in these recent posts. Along with those additional comments.....
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
Drifting
Joined: Feb 2001
Posts: 1,768
Likes: 297
From: Plano TX
It's Google Sheets. You want that app no matter anyway.
Melting Slicks
Joined: Mar 2013
Posts: 3,104
Likes: 626
From: Baton Rouge LA
I'll hold off on reporting that in case a change is made to the structure. It would also be good to have a way to report repair dates and part numbers. I think the latter is important because there have been so many revisions on the TC, and I would like to know if the newest one or the flush-only procedure has had any failures.
Last edited by iclick; Jun 9, 2017 at 10:16 PM.
Team Owner
Joined: Sep 2005
Posts: 29,113
Likes: 2,194
From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
I must have made the Corvette gods happy in some way. Over 25k on my bought in Aug '16 Z and no issues.
Thread Starter
Melting Slicks
Joined: Jan 2017
Posts: 2,982
Likes: 1,040
From: Georgetown CA
2018 Corvette of Year Finalist
2017 C7 of Year Finalist
I've been gone all day, lots of activity and comments to go thorough. I'll do that tomorrow and make some changes to the spreadsheet as there are some great suggestions that will make this more helpful. Stay tuned!
Last edited by mountainears; Jun 10, 2017 at 10:36 AM.
Melting Slicks
Joined: Mar 2013
Posts: 3,104
Likes: 626
From: Baton Rouge LA
I can only tell you that the TC Rev. 3 (#24280631) was available in Dec. 2016, as that was when I first brought my car in for service where this was verified. Some early 2017 cars had the Rev. 2 TC (#24279495) and some of them have already reported problems. My 2015 car (built 12/16/14) had #24273061. I don't know how many times they've revised the fluid, but the new fluid is Mobil 1 HD Low-Viscosity ATF #19353429, or at least that is what was used in my car in early Feb. 2017 for its TC/fluid job.
Last edited by iclick; Jun 10, 2017 at 08:34 AM.
Thread Starter
Melting Slicks
Joined: Jan 2017
Posts: 2,982
Likes: 1,040
From: Georgetown CA
2018 Corvette of Year Finalist
2017 C7 of Year Finalist
OK, I made some changes to the spreadsheet and I'm starting to go through all the comments and the PM's I have. Some folks can't update the sheet themselves, I will do those updates for those that have sent me messages (hopefully today).
In order for the charts to work, in some cases you have to enter the data in the exact choices that I give you in the drop down lists in each cell or use dates formatted the right way, etc.
I've highlighted a couple cells in yellow, if you see that, please correct.
In some cases this may be difficult. For example, HISVETTE put in Re-Flash Trans 3 times in the Failure column. That needs to be either No Failure, Torque Converter or Transmission.
The assumption here is that if you had an issue, something was done (torque converter replacement / flush or transmission work) so there was an identified failure component by the servicing department.
I know there is a warble / shudder issue as well going on and in that case it seems to be rear-end related. I haven't added that to this sheet, but I guess I can. I thought I would initially focus though on transmission related failures, not necessarily issues in general. So for now, if you have not had a transmission or torque converter issue, say no failure.
In order for the charts to work, in some cases you have to enter the data in the exact choices that I give you in the drop down lists in each cell or use dates formatted the right way, etc.
I've highlighted a couple cells in yellow, if you see that, please correct.
In some cases this may be difficult. For example, HISVETTE put in Re-Flash Trans 3 times in the Failure column. That needs to be either No Failure, Torque Converter or Transmission.
The assumption here is that if you had an issue, something was done (torque converter replacement / flush or transmission work) so there was an identified failure component by the servicing department.
I know there is a warble / shudder issue as well going on and in that case it seems to be rear-end related. I haven't added that to this sheet, but I guess I can. I thought I would initially focus though on transmission related failures, not necessarily issues in general. So for now, if you have not had a transmission or torque converter issue, say no failure.
Thread Starter
Melting Slicks
Joined: Jan 2017
Posts: 2,982
Likes: 1,040
From: Georgetown CA
2018 Corvette of Year Finalist
2017 C7 of Year Finalist
I've added some additional date/mileage columns. Failure, Repair and Current.
Thread Starter
Melting Slicks
Joined: Jan 2017
Posts: 2,982
Likes: 1,040
From: Georgetown CA
2018 Corvette of Year Finalist
2017 C7 of Year Finalist
No worries, I have you updated.
What model is yours and I'll update that as well.
What model is yours and I'll update that as well.
Thread Starter
Melting Slicks
Joined: Jan 2017
Posts: 2,982
Likes: 1,040
From: Georgetown CA
2018 Corvette of Year Finalist
2017 C7 of Year Finalist
There needs to be the following change to the overall structure IMHO:
1. Failure is a strong word, and can be interpreted quite differently. For example, some may interpret as a complete replacement of the Torque converter or transmission. I would reword to "Issue'' or "problem", and define as a dealer acknowledged issue, not just "i think there is an issue".
2. Although my TC is failing as well, my main issue at this current moment is the delayed engagement as mentioned above. It's hard to classify as a failure of either as the exact issue has not even been identified by GM yet (the current fixes do not work). At best it's an issue related to the transmission, not the TC as previously thought by the braintrust.
1. Failure is a strong word, and can be interpreted quite differently. For example, some may interpret as a complete replacement of the Torque converter or transmission. I would reword to "Issue'' or "problem", and define as a dealer acknowledged issue, not just "i think there is an issue".
2. Although my TC is failing as well, my main issue at this current moment is the delayed engagement as mentioned above. It's hard to classify as a failure of either as the exact issue has not even been identified by GM yet (the current fixes do not work). At best it's an issue related to the transmission, not the TC as previously thought by the braintrust.
For those that have an issue but have not serviced it yet, or it's in process, etc., the format doesn't really work. But this is looking at it more as a problem resolution tracking as opposed to a symptom / issue tracking.
The data has to be normalized in some way, especially with having mass amounts of people all updating this sheet, so there is some consistency in the results. Tried to do this a little by narrowing choices with drop downs.
Open to suggestions on how to modify the structure to help capture this. I was thinking about adding to the "Failure" column other choices like "X Issue - not resolved" where X could be "shudder, warble, or whatever number of options". But we'd need to define what those are so it could be charted.
Not sure, throwing out ideas.
Thread Starter
Melting Slicks
Joined: Jan 2017
Posts: 2,982
Likes: 1,040
From: Georgetown CA
2018 Corvette of Year Finalist
2017 C7 of Year Finalist