A8 Transmission failure tracking
07-13-2018, 08:56 PM
#701
Burning Brakes
And to further add to my confusion, it is NOT that I cannot drive stick,. Same dealer has a Watkins Gray Manual GS 3LT with blue interior for $21k off MSRP. No real changes of note between '17, '18, or '19s? If you had it to do over, would you have bought the manual?
07-14-2018, 09:20 PM
#702
Instructor
Chevrolet engineering should recognize that denial is not a river in Egypt. I was ready for my next Corvette after being out for 5 years but there’s zero possibility of that happening now. The A8 design is flawed in so many basic ways that it will someday be an engineering case study. They need to get over their “not-made-here” ego issues and go buy a proven transmission from ZF or figure a way to put in the co-designed with Ford 10 speed. To repay customer loyalty with this level of unreliable quality is just plain bad business. I know of 5 owners who will never buy another Corvette. They just don’t have time for the drama. Neither do I.
07-15-2018, 07:43 AM
#703
chevrolet engineering should recognize that denial is not a river in egypt. I was ready for my next corvette after being out for 5 years but there’s zero possibility of that happening now. The a8 design is flawed in so many basic ways that it will someday be an engineering case study. They need to get over their “not-made-here” ego issues and go buy a proven transmission from zf or figure a way to put in the co-designed with ford 10 speed. To repay customer loyalty with this level of unreliable quality is just plain bad business. I know of 5 owners who will never buy another corvette. They just don’t have time for the drama. Neither do i.
07-15-2018, 11:19 AM
#704
Le Mans Master
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Chevrolet engineering should recognize that denial is not a river in Egypt. I was ready for my next Corvette after being out for 5 years but there’s zero possibility of that happening now. The A8 design is flawed in so many basic ways that it will someday be an engineering case study. They need to get over their “not-made-here” ego issues and go buy a proven transmission from ZF or figure a way to put in the co-designed with Ford 10 speed. To repay customer loyalty with this level of unreliable quality is just plain bad business. I know of 5 owners who will never buy another Corvette. They just don’t have time for the drama. Neither do I.
07-16-2018, 03:06 PM
#705
2nd Gear
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A8 Transmission
My 2016 Stingray went to the shop today because the transmission is shuttering,with a little over 12,700 miles. The dealer just called me and said they will be flushing the transmission tomorrow..Will keep you posted.
07-16-2018, 03:29 PM
#706
Instructor
I would think by now some enterprising attorney would have seen this as an opportunity for a class action suit. GM needs to step up and buy these vehicles back and pay for the time lost in dealing with the problem. Believe me, GM knows they have a problem. Their stop-gap fixes are not long term and at the end result in diminished value. Triple-flushing of the transmission? Really? Since when has this been a part of a maintenance regimen? Then replace the torque converter and hope? Why don’t they include prayer as part of the process? Mostly the old Hydramatics, Torqueflites and Ford C6’s were bolt-em-in and go. Maybe an occasional fluid drain and filter change if in severe service. But the lions share we’re going for over a hundred grand without a hitch and zero service. Now suddenly we have these events and GM saying there isn’t a problem? Come on guys, I was born in the dark, but it wasn’t last night.
07-17-2018, 09:06 AM
#707
It may not matter much to GM, but I have put off ordering a GS to replace my 2015 Stingray. My A8 needed the flush for shuddering, and I will not replace it until it’s clear that the A8 is a reliable transmission.
07-17-2018, 12:50 PM
#708
Instructor
I got my 2016 a8 with 6k on it back from dealership last week after they did a triple flush for shuddering, 200 miles so far, no issues except a hard shift to second on first drive of the day every time.I asked gm to give me a extended warranty on it and they gave me $100 voucher for future repairs. gee thanks
07-17-2018, 12:56 PM
#709
Melting Slicks
I guess you guys know this is happening to the Camaro guys as well. I have a 2017 Camaro SS A8 convertible. Had the shutter at 4K miles and triple flush. Now has 6K miles but I fully expect the issue to recur. I wish I would have bought a manual. Will probably trade it in for a GS manual. Shame I really like the car.
Last edited by craig04c5; 07-17-2018 at 12:59 PM.
07-18-2018, 05:20 PM
#710
Advanced
I dropped off the car yesterday. I told them about the shudder. They called today and said they looked at the service bulletins and will be performing a fluid flush. More to follow...
07-19-2018, 12:23 AM
#711
Instructor
They looked at the service bulletins? By now you’d think they would have them memorized with all the A8 failures not only in Vettes but Camaros and others as well. THAT makes me shudder.
07-19-2018, 07:21 AM
#712
Melting Slicks
I know right! When I called the service rep described the issue to me he was so aware of the shutter.
07-20-2018, 10:38 AM
#713
Had this TC installed and still have same problem, going back in shop on the 30th. Already had triple flush, TC replaced, new differential complete and a drive side axel. I can only guess that a new valve body is required at this point. What concerns me is what is getting worn or damaged while they figure this out.
07-20-2018, 10:44 PM
#714
Heel & Toe
New Fluid?
Hi Steve, I’m having the shudder issues and trying to get good info before going to dealer. What is the new fluid you mentioned? I have seen on other sites some are switching to Amoil or something like that.
Also, can anyone recommend a reliable and reputable dealer that has certified corvette techs that are well versed in these issues? I am in the NWOhio area, (Maumee). Thanks!! I suspect we have a bad TC on our 2015 Z51.
That’s some great information. Thank you. I pulled all my work orders and saw the torque converter was indeed the older part no. I will be dropping my car off in the morning. I plan to share this and a little “refresher” of all past maintenance actions.
[/QUOTE]Also, can anyone recommend a reliable and reputable dealer that has certified corvette techs that are well versed in these issues? I am in the NWOhio area, (Maumee). Thanks!! I suspect we have a bad TC on our 2015 Z51.
That’s some great information. Thank you. I pulled all my work orders and saw the torque converter was indeed the older part no. I will be dropping my car off in the morning. I plan to share this and a little “refresher” of all past maintenance actions.
07-21-2018, 06:44 AM
#715
Had this TC installed and still have same problem, going back in shop on the 30th. Already had triple flush, TC replaced, new differential complete and a drive side axel. I can only guess that a new valve body is required at this point. What concerns me is what is getting worn or damaged while they figure this out.
07-21-2018, 07:47 AM
#716
Heel & Toe
we are experiencing a shudder every few seconds, like going over rumble strips. It happened in all modes, E-Track. First noticed it using cruise control but happens with or without it. Almost feels like it is not engaging the correct gear
07-21-2018, 10:16 AM
#717
My experience with three TC replacements was the original part # that failed was 24279495.The first two TC replacements that both failed were also 24279495.
Finally, in early Feb 2017 the third TC installed was #24280631 with the new full synthetic tranny fluid, both of which became available either very late 2016 or Jan 2017.
That third iteration TC performed well for the next 3000 miles at which point the car was replaced with a 2018.
07-21-2018, 11:16 AM
#718
Le Mans Master
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I hate to tell you guys this, but it has been established that even though there are three different part numbers for the TC that there is no redesign of the part. Those different part numbers are just production run numbers. The parts are all identical. That is per Tadge Juechter. That is why you occasionally read about the newest part number failing again on the same car.
Essentially, the definition of insanity. GM knows that most drive trains experience no problems, so they are just hoping when they replace the customers TC it will fall into the reliable category.
Essentially, the definition of insanity. GM knows that most drive trains experience no problems, so they are just hoping when they replace the customers TC it will fall into the reliable category.
07-21-2018, 11:37 AM
#719
^^^^^^^^^^^^^^ correct me if I am wrong but I don't think I have seen any posts of known TC failures in 2018 , 2019 , MY cars or 2017 MY cars built after about Jan 2017 when the most recent TC part # and new full synthetic tranny fluid was introduced ??..... not trying to rain or blow sunshine, just trying to keep up on stats.
