10-09-2019, 06:33 PM | #1 |
Drives: 2017 Camaro Convertible SS Fifty Join Date: May 2018
Location: Los Angeles
Posts: 340
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A8 Shudder, etc. TSB 18-NA-355
Might be here, but had a time finding it, it is 17 pages long.
Printed it out and taking it with me for the dealer. https://static.nhtsa.gov/odi/tsbs/20...63890-9999.pdf
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2017 Camaro SS FIFTY Convertible
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10-09-2019, 06:51 PM | #2 |
Drives: 2017 Chevy Camaro 1SS Join Date: Oct 2019
Location: Coconut Creek, FL
Posts: 33
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Not sure if I’m having the rumbling or shudder issue, I’ve noticed when on manual and decelerate to 1st gear the car noticeably jolts. Not sure if related.
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10-09-2019, 07:14 PM | #3 |
Drives: 2018 Camaro V6/RS Join Date: Nov 2018
Location: MI
Posts: 1,596
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From my understanding the shudder is only when you're in a higher gear and steady throttle or lightly accelerating
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10-10-2019, 03:09 PM | #4 | |
Drives: 2016 Camaro 2SS Convertible Join Date: Sep 2016
Location: SF Bay Area
Posts: 565
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Quote:
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11-20-2019, 03:31 PM | #5 |
Drives: 2017 Camaro Convertible SS Fifty Join Date: May 2018
Location: Los Angeles
Posts: 340
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Anyone able to point me to the TSB where they are to replace the converter or whatever as my dealer is refusing to do so as they cannot replicate the issue.
Thanks.
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2017 Camaro SS FIFTY Convertible
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11-20-2019, 04:14 PM | #6 | |
Geezer_loves_Camaros
Drives: 2018 2SS, Black, A8 Join Date: Dec 2018
Location: Austin
Posts: 225
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Quote:
What I can note is, I told my service department if they were unable to duplicate the problem, I wanted to schedule an appointment for them to do a 'ride-along', with me driving the car. And not have it just returned to me, unchanged. (Since I could duplicate the problem almost on demand.) As for the rest, on the second visit, they duplicated the problem and did the flush. I'm a few thousand miles past that and, luckily, has not returned. I also scheduled a ride along for when I picked it up, for assurance that it was actually fixed. For what it's worth. It's a pita, but keep after it. |
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11-20-2019, 04:34 PM | #7 |
Drives: 2018 Camaro V6/RS Join Date: Nov 2018
Location: MI
Posts: 1,596
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TSB 18-NA-355 is the one you want, but it also states to not replace the torque converter. With that said I was able to get mine replaced with the fluid/flush. It's likely dealer dependant. In my case the dealer saw the metal shavings in the fluid from the torque converter clutches, so they told GM, and they said to go ahead and replace it
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11-20-2019, 05:38 PM | #8 |
Drives: 2017 Camaro Convertible SS Fifty Join Date: May 2018
Location: Los Angeles
Posts: 340
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Here is the down side.
They did the fluid change, it came back within 500 miles. Now they are saying they can't re-duplicate it therefore nothing is being done. Had thought that if it returned after 500 miles that the next remedy was replacing the TCC, clearly I am wrong.
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2017 Camaro SS FIFTY Convertible
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11-20-2019, 06:42 PM | #9 | |
Banned
Drives: None at the moment Join Date: May 2018
Location: Florida
Posts: 284
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Quote:
The kicker is no other dealer will touch it until after that 12/12 goes by. They would also be paying out of pocket for the repair because the other dealer would be expected to redo the repair under their warranty. This is the shit part of dealers. You are best served to suck it up buttercup, and pay for an aftermarket TC to be installed. No more shudder. |
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11-20-2019, 06:46 PM | #10 | |
Drives: 2017 Camaro Convertible SS Fifty Join Date: May 2018
Location: Los Angeles
Posts: 340
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Quote:
And if I install an aftermarket TC won't that void the warranty?
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11-20-2019, 08:15 PM | #11 | |
Drives: 2020 Camaro RS Join Date: Oct 2019
Location: S.E. Georgia
Posts: 125
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Quote:
I would open a case with GM Customer Assistance. With my Colorado when the shudder came back after the #18-NA-355 flush they replaced my TC.
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2020 Camaro RS, V6, 6MT, Satin Steel 2020 Silverado, 5.3L CC, RST, Z71, Shadow Gray 2019 Equinox LS, 1.5L Turbo, Nightfall Gray Metallic |
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11-22-2019, 06:45 PM | #12 |
Banned
Drives: None at the moment Join Date: May 2018
Location: Florida
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No 12/12 means 12months, 12 thousand miles. Thats the warranty that comes with dealer repair work. If they repair your car under warranty of if you pay cash for the repair, they offer a 12 month 12k mile warranty on those repairs. They are obligated to redo the repair if it didnt fix the problem, or it broke again.
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12-05-2019, 12:00 AM | #13 |
Howdy! Pete here...
Drives: 2017 50th Anniv 2SS, A8, NPP, MRC Join Date: Jul 2009
Location: Schertz, TX
Posts: 1,379
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When driving the A8 in manual mode there is never a need to downshift to 1st gear when slowing down. Downshift only to 2nd gear and let the car downshift to 1st when it's ready.
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2017 50th Anniversary Edition, A8, NPP, MRC, w/Sunroof and Glow-tie! ___________________________________________ ___________________________________________ Ordered from GM Delivered to dealership and home 9-16-16 This car is a beast! |
12-05-2019, 02:47 PM | #14 |
Drives: 2010 Camaro Join Date: Nov 2009
Location: Denver
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ScatPack is correct. Techs are paid flat rate, so if there is a mistake they need to fix it with no pay for fixing it as they received pay for the first fix. It is their responsibility, but it does not make the dealer or the tech any additional compensation, so the "run around" is usually given.
Now, on the shudder issue and the fluid flushes. The symptom is from the stock converters poor design. The flush is only a bandaid intended to get you past the warranty period, and then it is no longer a liability to the auto maker. The shudder is from the fluid aerating and then it cannot provide the clamping pressure for the clutches and steels, and the metal HCI2000SS found is from the damaged caused by the shudder, and all will have this damage depending on how long the shudder was present. ONLY a good proper designed aftermarket converter can correct the cause. GM does not want the expense of replacing the torque converters so very few are able to get this under warranty, and it is just the same design they replace it with, again NOT addressing the cause, only the symptoms. There are a few proven brands that correct it all AND increase acceleration substantially, but if the symptoms have been present for any length of time, wear and damage very likely has already started. Anyone that wants to source one of the proven aftermarket units, email our Engineering department directly: Tech@EliteEngineeringUSA.com Hope this helps! |
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Tags |
18-na-355, a8 transmission, shudder, tsb |
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