23/C8Z

yeah. I'm sure that one tech on the clock getting paid warranty rate will be sure to torque everything to spec and be extra cautious. Sarcasm.

OP better man than I. I would've taken the dealer up on their offer and got the next new one. No way I take delivery and have that issue if offered an unchallenged out for replacement. Thats why they offered it to you.

redzone

LOL...awesome.

descartesfool

Why call "trivial" the dropping of the entire powertrain and then replacing the transmission and re-installing the powertrain on a brand new car? Great that you got such good and prompt service, but that was a major issue, certainly not trivial. How much would that have cost if it was not covered by the warranty, as I imagine it would be very, very expensive.

thebishman

Soulsea, sorry to read about the issue but you couldn’t ask for better service from a dealer, regardless of brand. Enjoy the car!

GM: WTF is going on with the DCT in these cars? Years of development followed by years in the ‘regular’ C8 before the transmission heads into the Z06 variant, and the damn thing is still not reliable for many owners! Makes zero sense at this point.

soulsea

Yes, in the grand scheme of things having a new transmission replaced by another new transmission is trivial, at least to me. And yes it would be very expensive to have this done out of warranty, and it makes the whole buying from a flipper without warranty a lot more perilous, but that's not what happened here, so unless this leads to further issues hopefully the matter is closed and the only downside I experienced is waiting an additional week for my car.

Tbh I have as much if not more faith in my dealer's tech than the folks on the production line.

As far as the replacement offer, it's not like it was a use it or lose it proposition. It is ongoing and I can take them up on it should further issues manifest. The way I see it there's no downside in accepting this car ... if it's sorted out great and we all move on with our lives without me having to wait several months for another car. If something goes wrong I'll get a replacement one. It will be fine either way.

international blue

Great series of posts soulsea, and a great serie of car **** pics. Very well played as usual sir.

z8ra

My 2023 z06 transmission failed at 2150 miles, you got lucky at only 1 week, it took 2 to 3 weeks, and it happened on vacation so I gave up waiting and flew home and GM sent the car to me, they paid 12k in compensation for hotels and airfare etc, not including the transport of the car from FL to WA, which must cost at least 3k, so they really took care of me.

I am happy to report 2000 trouble free miles of smiles since the transmission was replaced. I loved my 2020 Stingray and the Z06 has dialed everything up to 11, best car ever.

JABCAT

I think it's awesome you have what appears to be a great dealer, definitely not the norm. I would've taken them up on the replacement offer however. I'm not paying well into 6-figures to have a major drivetrain component replaced during PDI.

jbsblownc5

Awesome turn around and GREAT customer service...

Ragtop 99

Its too bad it failed before you had a chance to see if the motor has the tick. With the powertrain out, tightening up the caps would have been relatively simple. Hopefully its nice and quiet when it is back together.

fumbling

Hope it all works out with trouble free driving!

JABCAT

I do find it interesting that we're going into the 5th model year and not a peep from Tadge & Co. about the continued issues with the DCT. Just saw a post on Instagram this morning from a tech who has replaced 5 so far, one tech. We also can deduce they don't know the cause of the problem because there isn't a fix. They just keep swapping out units I guess hoping the new one doesn't fail.

GOLD72

Mighty expensive to keep swapping units out. You would think GM and Tremec will eventually get it figured out and the fix implemented on new units.

23/C8Z

I know its not like yesteryear but it is still their first attempt at this. DCT tech is still questionable in mas produced vehicles especially hi po vehicles.

Point to pdk in porsche they revamped and refined it over a decade and it is great reliable etc.

I can't recall which one said it but a Vp or pres of audi Aston martin or some European car mfr (higher end) said they went away from DCT and back to torque converter because of the reliability issues.

We pay for this amazing trans with the unknown reliability.

Mitchell_B

The DCT failures have been relatively numerous and varied and this points to several basic design issues whether oiling, filtration, solenoid design rather than just a manufacturing/assembly issue. Tremec will likely go through several revisions before this transmission ever becomes reliable. Until then, this unit will always be problematic.

It would help if GM advised for an accelerated preventive maintenance schedule because this transmission is rather fragile.

Mitchell_B

Not to mention that if making a transmission as complex as the M1M - in the case of the Z06, then make it with gear ratios and a final drive that make more sense. The way it’s built now, you have basically a four or five speed transmission with 3 or 4 overdrive gears. The gearing could be much better.

RapidC84B

The two main issues are:

1. Case porosity > bad castings.

2. Assembly debris from insufficient cleaning of hollow shift shafts.

Those should be easy to fix if they cared.

combatninja

Glad your car is back to you and in good working order.

And I stand by my statement that I would have ZERO issues having an experienced, conscientious tech that I trust pulling my drive unit. All you who feel otherwise are giving the FACTORY too much credit. You have no idea who did what at Bowling Green other than the guy whose name is on the engine plaque in the case of the Z06s. My Stingray had a bunch of random plastic and rubber bits left in the car in various places, there were missing screws in the under trays, etc. And that was just the stuff I could SEE. Imagine what I can't see. Just very poor quality control which clearly shows that at least SOME people on the line don't care. I'll take my chances on one guy that knows what he's doing making sure everything is as it should be. You guys are giving Bowling Green credit like it's the Porsche 911 assembly line. Of course, that kind of QA/QC takes money, lots of it. That's but one reason why Corvettes cost about 30-40% less than a comparably equipped 911.

JABCAT

It's simply the fact that it came broken. If I buy a $10 item off Amazon and it shows up broken, I send it back. There's no way I'm taking a $100k + item that needs a major component replaced before I even take possession. And, unless OP sells within a short period of time, it will negatively impact the vehicle's value down the road.

dgoldenz

Good that they got it fixed but sucks to have a car with a “story” before you even pick it up, especially if it shows up on carfax. Some people simply won’t buy a car with a replaced transmission or engine so you’re already limiting the future pool of buyers.