Har-ray

RWCARR

I had my GS flushed due to shudder issues in November. It was fine for the first 200-300- miles but now I'm experience the shudder issue again.

Jpena229

There are several threads about A8 problems and the solutions , to include the flush. If I'm remembering correctly one of those threads mentioned that there is a new tranny fluid and flush procedure (yes, another one) that was supposed to be available starting in January. You might want to check on it.

azcanuk

Couple from the Z06 Forum:

https://www.corvetteforum.com/forums...x-shudder.html

https://www.corvetteforum.com/forums...er-update.html

MA ZO6

I had mine flushed last week with the new procedure and fluid and NO shudder yet but I have only put about 50 miles on it. When I had it flushed a few months ago the shudder came back right away and was just as bad as before. My dealer did say that if the shudder returns after the new procedure and fluid flush they would flush it again to solve the problem.

I have attached the NEW TSB for those that want to see what is involved. Make sure and see the directions that apply to the Corvette as the TSB has directions for many cars. I had to break the TSB into two parts as the file was too big to post as one, the Corvette directions are toward the end of part 2.

John

Prray

I too had my 17 Stingray done with the new bulletin procedure last week. I only put 46 miles on it and it seems good. The dealer did mention that it can take up to 200 miles of driving before the shudder goes completely away, mine seems to shift a little smoother and no shudder as of yet but still have to rack up some miles. I hope this takes care of the problem. I heard a rumor out there that there maybe another revised bulletin to the latest one 18-NA-355 coming in the first or second quarter of 2019. Wow from the constant threads out there about this issue and the class action suit is very concerning. Good luck to everyone out there!

speed4tu

Had the new flush done on mine and for now its quit. My expectations are really low with this new bandaid tho.

Har-ray

MA ZO6

I would inform your dealer and see if he will flush it again, it is possible they didn't get all the old fluid out if they didn't do the flush properly. My dealer told me if it did come back they would do the flush again.

John

rmorin1249

Are you driving in V4? This seems to exacerbate the shudder. My flush was done about 2K miles ago. Use a Range all the time. No shudder so far.

Har-ray

Yes / Range always. Iam sure the dealer will do it again.

kenownr

Har-ray: you a getting a shutter even with the range plugged in? That's the first time I've heard that if so. -- tom

Har-ray

Yes. 60 - 80 mph, Range on; in auto or manual mode.

kensredvette2

^^
Those symptoms seem unusual for a TCC problem. I would suggest looking at other causes of a shudder effect just in case......
(Good road force tire balance; check for bent rims; check for wheel runout on the car to look for rotor spindle wobble, etc)

azcanuk

especially in manual with a Range...