A8 Issue TSB 16-NA-175 2017 2SS - Page 9

Natro33 · 10-17-2017, 08:10 PM

Quote:

Originally Posted by Adrian97c

AFM has nothing to do with this Issue. Maybe you have something else?

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There are quite a few folks on this forum that explain the shudder/rumble strip/vibration is most present during the V4-V6 transition and the V4-V8 transition. In fact while use the RANGE device I did not experience the shudder/rumble strip feeling at all.

Natro33 · 10-17-2017, 08:14 PM

Quote:

Originally Posted by sub_ETCS_ret

3 things - 1. If it's under warranty then demand that they do this TSB. 2. Find another dealer. 3. I highly doubt you have an AFM problem. I demanded that they do this TSB. You are a customer and if you don't get the service you want then either take it to a higher authority or change dealers.

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Totally correct. They have offered to do it out of "courtesy" so i just need to be patient and hope that it fixes it.

sub_ETCS_ret · 10-17-2017, 08:18 PM

Quote:

Originally Posted by Natro33

There are quite a few folks on this forum that explain the shudder/rumble strip/vibration is most present during the V4-V6 transition and the V4-V8 transition. In fact while use the RANGE device I did not experience the shudder/rumble strip feeling at all.

I bet of they watched more closely they would find out that it's not the AFM and that the issue is actually the torque converter. I bet the Range device just masks it for a bit.

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SuperSound · 10-17-2017, 08:35 PM

Quote:

Originally Posted by Natro33

Totally correct. They have offered to do it out of "courtesy" so i just need to be patient and hope that it fixes it.

The transition is not a shudder when AFM engages, it's after (V4 to V8). Once the TC is worn bad enough, the issue happens more frequently and in V8 mode much more noticeably. Mine went from only shuddering during transition from AFM to doing it at light throttle/load situations, even shifting gears. The AFM programming if it is pulsing the TC somehow could be causing the TC to wear faster, but it's definitely the TC which is the root cause of the problem. Evidenced by the multiple revisions they done to them at this point.

Adrian97c · 10-17-2017, 08:36 PM

Quote:

Originally Posted by sub_ETCS_ret

I bet of they watched more closely they would find out that it's not the AFM and that the issue is actually the torque converter. I bet the Range device just masks it for a bit.

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This.

Quote:

Originally Posted by SuperSound

The transition is not a shudder when AFM engages, it's after (V4 to V8). Once the TC is worn bad enough, the issue happens more frequently and in V8 mode much more noticeably. Mine went from only shuddering during transition from AFM to doing it at light throttle/load situations, even shifting gears. The AFM programming if it is pulsing the TC somehow could be causing the TC to wear faster, but it's definitely the TC which is the root cause of the problem. Evidenced by the multiple revisions they done to them at this point.

..and that.

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sub_ETCS_ret · 10-18-2017, 07:09 AM

Quote:

Originally Posted by Natro33

Totally correct. They have offered to do it out of "courtesy" so i just need to be patient and hope that it fixes it.

FYI - this TSB isn't just to flush the transmission. There is a very detailed test procedure. That's what they should be doing.

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X-Factor · 10-18-2017, 10:50 AM

Mine just went in for the TC Shudder on Monday. They did the 3 flush and replaced the trans filter. So far so good. I'll see how it goes now...

EFI Tuning · 10-18-2017, 11:27 AM

This issue is ridiculous. I had the flush done. The shudder went away for a few months then returned. My 2017 Colorado experiences it on occasion. I've been successful in stopping it via TCM tuning on my personal car. I can't believe the designers haven't figured out the issue at this point... my guess is fixing it properly has significant financial implications for them.

sub_ETCS_ret · 10-18-2017, 12:00 PM

Quote:

Originally Posted by EFI Tuning

This issue is ridiculous. I had the flush done. The shudder went away for a few months then returned. My 2017 Colorado experiences it on occasion. I've been successful in stopping it via TCM tuning on my personal car. I can't believe the designers haven't figured out the issue at this point... my guess is fixing it properly has significant financial implications for them.

What did you have to tweak in the TCM to fix it?

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Natro33 · 10-18-2017, 07:14 PM

Quote:

Originally Posted by EFI Tuning

This issue is ridiculous. I had the flush done. The shudder went away for a few months then returned. My 2017 Colorado experiences it on occasion. I've been successful in stopping it via TCM tuning on my personal car. I can't believe the designers haven't figured out the issue at this point... my guess is fixing it properly has significant financial implications for them.

Couldn't agree with this more. My triple flush is next week. I'm cautiously optimistic. If that doesn't fix it then I'll tune it out and take my chances or lawyer up. Why has no one brought up class action? The reason I would lawyer up is to express my seriousness on the the issue backed by a host of other repairs in the first 5 months of ownership (rear cradle replacement, two afm actuators, and an unsecured seat pan causing creeking on accel and deceleration).

ChrisCoffey · 10-19-2017, 05:54 AM

I guess it depends on the dealers you take it in too. I took the tsb printed out in to mine and explained the issue I was having. He even asked advice from me what you guys were seeing to resolve the issue. I told him flushes would work but it would come back after awhile that sources were saying it was a TC issue to replace. He said let me get my guy on it and get back to you. That same day he called and said they are replacing TC . I picked it up the next day. I think having a good dealership is key to any problem with fixing or attempting to fix these issues. I'm glad mine listens or at least appears too.

If this service manager ever leaves I might not buy another GM vehicle again if finding this type of service in other dealers is such a pain or not as common.

black96lt1 · 10-19-2017, 07:34 PM

Quote:

Originally Posted by Adrian97c

Mine still shifts like a bucking bronco

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I may have spoke too soon. Now that it has gotten colder it bucks when going from 1st to 2nd. Only when the outside temp is below 50 or so and as soon as the transmission warms up its back to being smooth.

Chutzpah · 10-19-2017, 07:45 PM

Quote:

Originally Posted by black96lt1

I may have spoke too soon. Now that it has gotten colder it bucks when going from 1st to 2nd. Only when the outside temp is below 50 or so and as soon as the transmission warms up its back to being smooth.

Mine has been exactly the same way from 1000 miles on. Warm it up and good to go...well, for the most part.

7rank · 11-04-2017, 05:21 PM

Quote:

Originally Posted by 7rank

I'm having this issue as well... I really thought it was rough pavment at 1st and kept looking out my mirrors for bad pavement.. could'nt figure it out.. and now that I see other's experiancing this, there's defanetly a problem here!

Had tranny flushed last week... so far no more rumble... we'll see how long it holds!

10-18-2017, 10:50 AM	#119
X-Factor Chick Racer Drives: 2017 50th 2SS Join Date: Dec 2012 Location: H-Town Posts: 789	Mine just went in for the TC Shudder on Monday. They did the 3 flush and replaced the trans filter. So far so good. I'll see how it goes now... __________________ www.h-towncamaroclub.com

10-19-2017, 05:54 AM	#123
ChrisCoffey Drives: 2016 Camaro 1SS Hyper Blue Metallic Join Date: Jun 2015 Location: TN Posts: 49	I guess it depends on the dealers you take it in too. I took the tsb printed out in to mine and explained the issue I was having. He even asked advice from me what you guys were seeing to resolve the issue. I told him flushes would work but it would come back after awhile that sources were saying it was a TC issue to replace. He said let me get my guy on it and get back to you. That same day he called and said they are replacing TC . I picked it up the next day. I think having a good dealership is key to any problem with fixing or attempting to fix these issues. I'm glad mine listens or at least appears too. If this service manager ever leaves I might not buy another GM vehicle again if finding this type of service in other dealers is such a pain or not as common. __________________ "Ask not what the camaro can do for you but what you can do with your camaro."

10-18-2017, 11:27 AM	#120
EFI Tuning Drives: 2016 Camaro SS Join Date: Oct 2016 Location: Mount Dora, FL Posts: 792	This issue is ridiculous. I had the flush done. The shudder went away for a few months then returned. My 2017 Colorado experiences it on occasion. I've been successful in stopping it via TCM tuning on my personal car. I can't believe the designers haven't figured out the issue at this point... my guess is fixing it properly has significant financial implications for them.

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