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Old 12-14-2018, 12:58 PM   #71
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Old 12-14-2018, 01:40 PM   #72
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My guess on the TC, they knew a fix was coming, and they didn't want to replace more TCs in the meantime, knowing they'll need to replace them again after the new fix.

So I'm thinking the new bulletin will say to replace the TC if the new fix doesn't fix it fully. (if it's already too far gone) Everyone needs to remember that we haven't seen the new bulletin yet - we only know the physical parts going to the dealer, and we don't actually know what the "tool kit" is. If the TC itself was not revised, I wouldn't guess they would be sending those out en masse, which is why it's not on that e-mail. I'm really thinking we will see a new tune along with the new fluid. Then, the hope is if that doesn't do it, they will replace the TC and not have to do it again on that car.

It benefits them to not have to replace the TC multiple times for no reason.

Anyway, I don't have any insider knowledge at all - just hoping. Any chance that we'll be able to actually see the new bulletin before two months' time? We're not really going to know if the fix might be worth a damn until we see that.
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Old 12-14-2018, 01:52 PM   #73
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There is no mention of TC replacement. The tool is a special fitting to allow a more forceful flush to be applied. This info came from a 22 year GM service manager. Take it for what you will. I have absolutely 0 faith that GM is about to anything but break dick off in a lot of people all over again. That's OK though, David at Vengeance can fix it and all it will cost is money.
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Old 12-14-2018, 01:58 PM   #74
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Right, it doesn't mention that there, but that e-mail doesn't lay out the entire procedure. It doesn't say that they won't replace it either if it's needed. I'm sure they won't do it for every situation. I'm sure they would only do it if it's too far gone that this fix doesn't fix it completely. Even if that's correct about the tool kit, it doesn't eliminate this possibility. Of course you could be right. I'm just trying to be optimistic since we don't have all the facts yet. For what it's worth, I don't have a ton of confidence either - I mean even if this fix was wonderful and perfect, it took 3 years to get to this point?? Just holding onto any hope I can, because I would much rather keep this car than get a Mustang.
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Old 12-14-2018, 02:10 PM   #75
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I will keep the car. Glad my daughters ZL1 has the A10. Hopefully it doesn't develop issues down the road. Just sucks that it appears to me that in order for the car to perform as it should, I am gonna have drop 3 grand.
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Old 12-14-2018, 03:39 PM   #76
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Just got off the phone with my local dealership as I had an appointment to get the flush again for the second time. When the service guy called me and said they are literally doing nothing, not even another fluid flush until the new fluid comes in. However, he said the new fluid will be in next week to them as they are a high volume dealership. I also asked about the "tool kit" and he said it is a new attachment to their flushing machine.
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Old 12-15-2018, 09:37 AM   #77
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That is crazy if that is all they are doing...again they need to inspect TCs during whatever this new "fix" is going to be, because I know mine at the least has damage done to it.
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Old 12-15-2018, 03:39 PM   #78
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The flush is a BS fix. Any mechanism/control system that is susceptible to minute changes in friction is a poorly designed system that will continue to develop problems over time.

There's some interaction between the converter lockup and the AMF that keeps slipping (pun intended) into an unstable mode. Possibly there should be no lockup in 4 cylinder mode, but designers are driven by fuel economy goals to force lockup whenever possible. I recall that my last GM car with an Ecotec 4 had a "lockup" mode that in fact allowed some continuous slippage specifically for the purpose of eliminating shudder (this was described in detail in the shop manual to clarify that lockup was designed to allow that slippage).

The A8 needs a fundamental redesign, not a flush.
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the a8 isn't the problem. It's the tc having a design problem of paper friction material. the tcm is programmed to allow slip in 6-7-8 which causes the pumps to keep switching from high to low and back. this is where the shudder comes from. V4 mode allows more slip to alleviate the pulsing associated with how that mode works.

It's not the A8. stop blaming the a8. It's the tc and the tune. if you just replace the tc then a new one will wear out just as fast. if you retune the tcm on an already shuddering tc, then you can mask the issue, but it will return eventually. maybe not in 20k miles, but eventually.
Exactly. We are saying the same thing.

My 2010 with the A6 has a very noticeable jerking when switching from 4 to 8 cylinder mode. Perhaps that is what more intentional slippage is intended to mask, but it results in shudder instead. I'm not sure I will ever buy another car with AFM.
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Old 12-15-2018, 08:08 PM   #79
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I'm about to close a deal on a new 2018 2.0L in a few days. After reading this entire thread,should I do it? The car was made exactly 4 months ago. Thanks for any serious input and if it's all negative,it won't hurt my feelings at all!
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Old 12-16-2018, 09:28 PM   #80
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I was thinking about this today, wondering how some law firm hasn't jumped on this gold mine.

Millions of these junk trannys in trucks. Starting in 2015.

The fix is coming? OMG

Al O. already fixed it with the right fluid, didn't he? Negative

If they could and were willing to fix this pos trans they would have done it YEARS ago.

Beware the new SS A10 with AFM. Time will tell on that one.

Glad owners can get some kind of compensation. Sue GM's brains out - they're loaded $$$
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Old 12-16-2018, 09:40 PM   #81
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Originally Posted by karmatourer View Post
I'm about to close a deal on a new 2018 2.0L in a few days. After reading this entire thread,should I do it? The car was made exactly 4 months ago. Thanks for any serious input and if it's all negative,it won't hurt my feelings at all!
The A8 transmission shudder issues seem to be limited to V8 vehicles with active fuel management (AFM). The 2.0L doesn't have AFM. I don't think there have been many (if any) 2.0L Camaros with the shudder problem. I think you will be OK.
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Old 12-16-2018, 09:42 PM   #82
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Quote:
Originally Posted by Mark114 View Post
The A8 transmission shudder issues seem to be limited to V8 vehicles with active fuel management (AFM). The 2.0L doesn't have AFM. I don't think there have been many (if any) 2.0L Camaros with the shudder problem. I think you will be OK.
Unfortunately not just the V8s. Really prevalent on my V6 and others. I’m not sure about the 4s.
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Old 12-16-2018, 09:58 PM   #83
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Quote:
Originally Posted by Mark114 View Post
The A8 transmission shudder issues seem to be limited to V8 vehicles with active fuel management (AFM). The 2.0L doesn't have AFM. I don't think there have been many (if any) 2.0L Camaros with the shudder problem. I think you will be OK.
Best news I've had this week. I'm moving forward with it and thanks for taking the time to respond.
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Old 12-17-2018, 01:40 AM   #84
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Quote:
Originally Posted by Mark114 View Post
The A8 transmission shudder issues seem to be limited to V8 vehicles with active fuel management (AFM). The 2.0L doesn't have AFM. I don't think there have been many (if any) 2.0L Camaros with the shudder problem. I think you will be OK.
Not exactly 2.0 vehicles are affected as well

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