Stingray Corvette Forum banner

6A vs. 8A (vs. elusive 7MT)

6589 Views 27 Replies 17 Participants Last post by  71ejw
Hello all,

I've been looking for a 2014-2018 and there are numerous decent cars in SoCal. However, I am concerned about the dissatisfaction with the 8A and am now considering whether I should buy an early car with the 6A, keep hunting for a 7MT, or even just buy another car entirely.

I've seen the thread on the TSBs and fluid swaps plus the torque converter replacements. What worries me the most is that GM's stance isn't very open minded at the moment, and the lawsuit isn't going to make me run out and buy a car with that transmission right now. In fact I'm holding off on a new SUV purchase until I see what happens with the lawsuit and Corvette transmissions.

Am I being too cautious? Am I seeing a minority of owners online posting problems, when most are happy? I can't tell. Thanks.
1 - 2 of 28 Posts
My A8 has been okay. It was manufactured in Feb. 2016 AFTER they changed the check ball (which resolved the transmission surge issue). So, I would add A8 manufactured Feb. 2016 or after to your list.
  • Like
Reactions: 3
I was gonna say the same thing. The TSB said fluid and the check ball issue mentioned earlier was for the A6, not A8. As always, verify what is posted here as sometimes inadvertent mix ups occur.
Check this link:

The one thing I was wrong about is that I thought the change was done in late January 2016 or early February 2016 (I knew that my A8 has the transmission with the new hardware, but I thought that it had started very shortly before mine was built). It turns out that the switch over to the new hardware in the A8 (8L90) in the Corvettes happened on October 27, 2015. So, it happened a few months before I thought. Oh well.

Anyway, the A6 was only in 2014. The A8 with the old hardware was model years 2015, and 2016 built up through October 27, 2015. The ones built after that have the new hardware.

Of course, even with the new hardware in the transmission, transmission fluid flushes may be needed, but that is EASY. On the other hand, pulling a transmission to change hardware is a huge job.

So, to the original poster, if he gets an A8, I would recommend getting one built after October 27, 2015.

See less See more
  • Like
Reactions: 1
1 - 2 of 28 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.