2015 C7 A8 corvette repeat Transmission trouble
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    Junior Member SENIOR's Avatar
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    2015 C7 A8 corvette repeat Transmission trouble

    With about 5000 Miles the Transmission acted up. In the morning after backing out of the garage I selected Drive and the Transmission clunked in gear but jerked back and fore
    2 or 3 times with some metallic noise. Took the car to the dealer. Could not find anything wrong. Reinstalled software. Problem was gone. At about 10000 miles same problem.
    Back to the dealer. Nothing found. Reinstalled software. Problem solved, I thought. In the meantime GM released Service Bulletin #16-NA-014. It requiers to tear down the Transmission and install a part. Dealer did not want to do that. Well, there is a 100,000 miles warranty on the Transmission. So, now 17,000 miles same problem.
    Heavy clunking going into drive in the morning. Back to the dealer. Happens only when the car is sitting over night in the garage. Garage is level. Anybody has this problem
    please let me know.

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    Suggest that you drop a PM to ChevroletCustomerCare. Include your VIN, specifics of the issue and times it has been in for service, your dealer's name, and ask them to intercede on your behalf to get #16-NA-014.
    aka Jeff
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    Thank you.
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    Senior Member U.S. Marine's Avatar
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    SENIOR, it's sad to read about your C7 Masterpiece problems, but I went "WOW" when I read the portion that stated "Dealer did not want to do that"!! My six would find another service department that would do it without a second thought. Contact Chevrolet Customer Care and brief them concerning your situation, the General needs to know about those insouciant dealerships. Hope that you get that A8 squared away and get back to wheeling around Cali.

    SF
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    Senior Member rmorin49's Avatar
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    There is a TSB about installing a new valve to prevent tranny fluid from leaking. Also a new stator support. This solved my similar issue.
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    Thank you for your advice.

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    Thank you for your info .

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    Yes. That is a stator issue. In a nutshell there is not enough fluid present as it leaked out to the main chamber overnight.
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    Does Service Bulletin #16-NA-014 cover and fix the stator issue?
    I had not heard of a stator and learn a lot here, thank you all.
    I read about stator here:
    https://www.amtechinternational.com/...e-die-casting/
    Does the dealer replace the original stator with a newer model?
    Thanks.
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    I had the same problem and they replaced the torque converter after the 3rd time and threatening to apply for the lemon law.

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    Junior Member Corvette Sandy's Avatar
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    RMorin49, do you know the TSB #? My son is having similar issues with another A8 vehicle he purchased recently and has not been satisfied with dealer response. Thanks!

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    Junior Member aarmstead's Avatar
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    I had trans issues with my 2015 3LT A8 Stingray at 11,000 miles, after 2 return visits the dealer replaced the torque converter. So far it has been shifting fine.

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    Thank you for your info.Taking the car in on monday.

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    Yes, have reset software twice. I now have 23k and the problem has not reoccurred. Thanks for the input for when and if it returns.

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    Senior Member rmorin49's Avatar
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    Quote Originally Posted by Corvette Sandy View Post
    RMorin49, do you know the TSB #? My son is having similar issues with another A8 vehicle he purchased recently and has not been satisfied with dealer response. Thanks!
    16-NA-14 dated July 2016. Title is: Delayed Engagement After Sitting With Engine Off. It applies to several Chevrolet, Cadillac and GM models. Good luck.
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