[Cameron27]

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[wingchunsifu]

So I brought my 2017 2SS A8 to the dealer for the vibration issue. The AFM was disabled with a Diablo tuner prior to this vibration emerging. The symptoms fit the TSB "rumble strips" feeling between 40mph and 80 mph.

This was a first for the senior service writer, surprisingly enough after having read about all these tranny issues. It took a week and a half since they did not have the fluid or filter in stock. I was a little leery having tuned the ECM with the INTune I2 applying the Lewis Eton custom tune, that I also had on my 2017 M6 that I swapped out for the A8. Before I brought it in I re-flashed the ECM with the factory tune. No issues from the dealer mentioned about the "flash counter" that I see here on the forum. Feeling more than a little concerned about voiding my warrantee I called Diablo and they assured me once the factory tune is re-flashed there are no issues. The tech
said any scan tool usage will register as a flash count and that the dealer can't prove what its from.

Anyway I got the car back with the standard- "drive it for 200 miles" then see. First impressions: no vibration as of yet. The flush seems to have solved the problem so far. The transmission shifts feel tighter and smoother than before. Almost as if it got an upgrade. BTW, the vehicle had already gotten the factory TCM re-flash recall prior to the delivery when I purchased the car so that had nothing to do with the vibration.

Drove the car for a few days before I re-flashed the custom tune. The stock tune is so tame; soft with throttle lag, low throttle boost and that annoying AFM which has no place in a performance machine. Custom tune in: the SS is an angry Tiger with mind blowing acceleration. No AFM and the no-response pedal that many here write about is gone. pressing the pedal is like touching a nerve. The car will jump off the line. For John or Jane Doe this might not be good for the NYC mayor's "vision zero" program. However for any car guy or gal response is what we want! As a note here, even with the custom tune in my M6 I could not eliminate the throttle lag...and that can get you killed if your expecting the car to move right away and it doesn't.

I know I've veered off here with the tuning thing but honestly, anyone driving this car without a tune is not experiencing the full potential of their machine..by a long shot. It's better than any mod you could make, short of a supercharger. Once you get the tuning process down, it only takes minutes to flash and re-flash. Back to topic, hopefully the vibration is fixed.

If the dealer is using this "better fluid and filter" to remedy the issue shouldn't the factory have filled the transmission with this from the beginning?

[camaro5]

Originally Posted by KingLT1

Yes I have experienced this tune...driving experience is 10x better. Addressing the TCC slip tables has nothing to do with making the trans shift harder. Mine does not shift hard at all anyway...just nice consistent shifts every gear and all you deal with is gear changes until 8th gear then the converter locks @ 60 mph. No more herky jerky BS with AFM kicking in and out or converter locking and unlocking in lower gears. The A8 is too busy doing stuff in-between gears that it should of never been programmed to do imo.

Very interesting, sounds like a good way to go.

As far as the slip GM programs, if it's not to lower driveline shock, why else would they do it?

idk

Originally Posted by wingchunsifu

So I brought my 2017 2SS A8 to the dealer for the vibration issue. The AFM was disabled with a Diablo tuner prior to this vibration emerging. The symptoms fit the TSB "rumble strips" feeling between 40mph and 80 mph.

This was a first for the senior service writer, surprisingly enough after having read about all these tranny issues. It took a week and a half since they did not have the fluid or filter in stock. I was a little leery having tuned the ECM with the INTune I2 applying the Lewis Eton custom tune, that I also had on my 2017 M6 that I swapped out for the A8. Before I brought it in I re-flashed the ECM with the factory tune. No issues from the dealer mentioned about the "flash counter" that I see here on the forum. Feeling more than a little concerned about voiding my warrantee I called Diablo and they assured me once the factory tune is re-flashed there are no issues. The tech
said any scan tool usage will register as a flash count and that the dealer can't prove what its from.

Anyway I got the car back with the standard- "drive it for 200 miles" then see. First impressions: no vibration as of yet. The flush seems to have solved the problem so far. The transmission shifts feel tighter and smoother than before. Almost as if it got an upgrade. BTW, the vehicle had already gotten the factory TCM re-flash recall prior to the delivery when I purchased the car so that had nothing to do with the vibration.

Drove the car for a few days before I re-flashed the custom tune. The stock tune is so tame; soft with throttle lag, low throttle boost and that annoying AFM which has no place in a performance machine. Custom tune in: the SS is an angry Tiger with mind blowing acceleration. No AFM and the no-response pedal that many here write about is gone. pressing the pedal is like touching a nerve. The car will jump off the line. For John or Jane Doe this might not be good for the NYC mayor's "vision zero" program. However for any car guy or gal response is what we want! As a note here, even with the custom tune in my M6 I could not eliminate the throttle lag...and that can get you killed if your expecting the car to move right away and it doesn't.

I know I've veered off here with the tuning thing but honestly, anyone driving this car without a tune is not experiencing the full potential of their machine..by a long shot. It's better than any mod you could make, short of a supercharger. Once you get the tuning process down, it only takes minutes to flash and re-flash. Back to topic, hopefully the vibration is fixed.

If the dealer is using this "better fluid and filter" to remedy the issue shouldn't the factory have filled the transmission with this from the beginning?

That's a lot of great info.

Tune is vicious - no harmful side effects - sounds like a must have.

Simple reflash, and it's "What tune?"

So a scanner flips the reflash counter? Good info.

[KingLT1]

Good info!

[JFM-jr]

If you guys think GM wont have the ability to recognize the calibration is not the same one it left the dealer with originally your sadly mistaken. The reason it was not mentioned by the dealer is because nobody looked for it. On a common problem with TSB's issued for them i dont think GM will want much information from the dealer to approve the work. On most high dollar repairs like a motor replacement you can be rest assured GM will ask the servicing dealer that puts in the warrenty request for a screenshot of the ECU calibration information. I have a friend thats a Certified GM master technician that works at a dealership. He told me the information in the screenshot will likely lead to a denial of the claim. The newer ECU's are smart in many ways.

[camaro5]

Originally Posted by JFM-jr

If you guys think GM wont have the ability to recognize the calibration is not the same one it left the dealer with originally your sadly mistaken. The reason it was not mentioned by the dealer is because nobody looked for it. On a common problem with TSB's issued for them i dont think GM will want much information from the dealer to approve the work. On most high dollar repairs like a motor replacement you can be rest assured GM will ask the servicing dealer that puts in the warrenty request for a screenshot of the ECU calibration information. I have a friend thats a Certified GM master technician that works at a dealership. He told me the information in the screenshot will likely lead to a denial of the claim. The newer ECU's are smart in many ways.

You reflash the factory tune before service.

All parameters are then factory correct.

If they say the flash counter is up a couple, tell them you just plugged a scanner in to check for codes. Or a obd gps, Progressive Snapshot, or whatever.

Besides all that, without going into it too far, GM has to prove any mod caused a failure when you take GM to BBB arbitration. They don't.

j

[wingchunsifu]

I've been using the INTUNE I2 for the last two years. I liked it so much in my 2012 Jeep Hemi that I bought a second license from Diablo and tuned both Camaro's with the device. The Jeep service guy who I'm friends with said lots of his customers tune their HP vehicles and for sure they MUST re-flash the ECM before bringing the vehicle in for service. Yes GM and Chrysler are two different animals.

I asked the Diablo technician and extreme "what if" question: Suppose the tuning unit that is holding your factory tune gets damaged, lost or destroyed. Then if I need to bring my vehicle in for service I'm F****d. He said not if your factory tune was saved on your desktop as it should be. You can download that tune into a new tuner and then re-flash the ECM. In the absolute worst case scenario where you need to warrantee the entire engine and the port or ECM will not allow a re-flash then your out of luck.

Tuning is a gamble for sure and I've read nightmare stories from owners who have had bad experiences using them. If you are considering a tune do your own research and make an educated decision. My personal experience is my cars run better and faster with lots more torque and have never thrown a code. I'm hooked. The good thing about this unit is that it can also be used as a scan tool to show and clear codes as well as disabling only the AFM in the A8 or the turning off the 1 to 4 skip shift in the M6

And the custom tune sent through the Diablo tuner is the "Diab lew" custom tune from Lewis Eaton, A GM tuner who has affiliations with Diablo if I'm not mistaken.

[SuperSound]

Originally Posted by camaro5

You reflash the factory tune before service.

All parameters are then factory correct.

If they say the flash counter is up a couple, tell them you just plugged a scanner in to check for codes. Or a obd gps, Progressive Snapshot, or whatever.

Besides all that, without going into it too far, GM has to prove any mod caused a failure when you take GM to BBB arbitration. They don't.

j

Whoever is passing this info about flash counter and scan tools doesn't understand software. A scan tool does not change a flash counter because a scan tool does not "write" to the memory. A scan tool is just using the OBD protocol to read info off the PIDs and check/reset trouble codes. Do you seriously think GM would add a check for flash/write count that would be useless if someone took their car to Autozone to scan a code?

[JFM-jr]

Lets put things into perspective here if you went and bought a new ECU and installed it in the car it will not run in the car. It must be done thru GM's global server. They have this type of technology but cant tell if your ECU has been reflashed???? Even if you reflash the original 100% stock tune file they WILL know if it was reflashed Id hate to see somebody fooled into thinking otherwise.

[show7ime]

I do my best to stay out of these threads so I don’t start thinking my car has issues. But, in my 2017.... I haven’t noticed any unusual characteristics in shuddering and etc. I think I’m the only one who likes the afm lol. No problems.

Only thing I’ve noticed was when in track mode... the gearing stalls after a quick acceleration and then trying to get up and go again. But it may be me or the car.


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[HomerJFong]

So for you guys who are having issues are you wishing you had bought an m6 now? I was looking to go buy an a8 this weekend but I’m now thinking m6 might be the way to go to avoid all the issues.

[MBoston]

Does anyone here know the date of TSB for this issue on 2016 Camaro? I've been to the dealer too and they said it was normal for a car under 10k miles. Thanks in advance for info.

[Opus13]

Originally Posted by show7ime

I do my best to stay out of these threads so I don’t start thinking my car has issues. But, in my 2017.... I haven’t noticed any unusual characteristics in shuddering and etc. I think I’m the only one who likes the afm lol. No problems.


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+1
Although reading this info is making think.
I drove down to Pismo Beach, mostly freeway, and got 32mpg according to the car. Topped off before and after to cross check, and the math came out to 31.8mpg. Not exactly scientific, but close enough. I'm liking AFM.

[Cameron27]

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