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

6589 Views 27 Replies 17 Participants Last post by 71ejw, Dec 28, 2019

Rallyfan

Discussion Starter · Dec 6, 2019

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.

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RidgebackKing

· #17 · Dec 13, 2019

Rallyfan said:
Wait — aha! So they fixed the issue at some point in production? I didn’t know that! I thought even the C8 might have the issue since the transmission hadn’t been fixed at any point for the C7. That’s a pleasant surprize! OK great, I’ll add those cars to my list! Thanks.

The C8 has a completely new DCT.

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RidgebackKing

· #18 · Dec 13, 2019

Rallyfan said:
Thanks.

OK so I've gathered so far that:

a 2014 with any transmission is fine.

a 2016+ with any transmission is fine.

a manual transmission is fine except for 2017 cars covered under the TSB for the 2017 7spd.

and I'm adjusting my shopping accordingly, also having learned here of the better creature comforts in the later cars.

Any other comments and suggestions are always appreciated.

The A8 transmission issue a was not permanently fixed until Jan 2019. It requires a brand new transmission fluid.

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