Originally Posted by Phil1098

No need to apologize, it's all good. I just wanted to be clear the TR9080 isn't fragile, I also won't say it's perfect (mine is leaking out in the garage right now).

Originally Posted by Tony Alonso

I don't believe it's fragile either but it is complex I've been watching your posts about leaks. I am sorry you are dealing with that.

Originally Posted by DANZ06

ADMIN, please move if their is a better thread for this question.

I'm interested in the statement "cylinder 1-3-5-7 failure". My 2020 has been back to the dealership three times since new. It's a fairly early car. Here's the timeline:
My 2020 must be a “Tigger” when it comes to fuel injectors. I’ve researched this site and the web in general and I don’t find other C8 Corvette owners reporting fuel injector problems. My car’s in the shop for the third time with what appears to be another fuel injector problem.
Timeline:
Took delivery of my 2020 on July 3, 2020. I could not connect for software updates at my house, or “automatically” while sitting near stronger wifi signals. Took to dealership for software updates and they had the car for 10 days while they worked with GM Tech. Let me say, I love my dealership and the tech is topnotch.

Nov. 2020:
Just limped home in VIN 3688, check engine light, rough running, "Service ESC" and "Service Traction Control" showing. After turning off engine smelled "burnt" and passenger side intake fan ran for a long time. Car has 895 miles on the odometer.

Update:
Dealership says it's not a broken valve spring and they can't replicate the problem. They're talking to GM about the codes being displayed. I'll go to the dealership on Monday to get a better understanding of what is/is not happening. I seriously felt the symptoms I was having matched what others were getting with a broken valve spring.
.
Update: 12.2.2020, the dealership apologized for bungled communication, GM has authorized replacing all valve springs.
.
Update: 12-5-2020: the dealership and GM Tech diagnosed my problem as a "faulty fuel injector," TAC suggested a compression test and a leak down test. Results within normal specs. All valve springs were inspected with no issues found. #5 injector was replaced and GM authorized all sixteen valve springs be replaced for "customer satisfaction." Car number 3688 did not have a broken valve spring...but, the customer (me) is satisfied. Thank you Integrity Chevrolet and GM.

New problem: March 26, 2021
Car #3688 back in the shop with same symptoms, check engine light, "stumbling" rough running, "Service ESC" and "Service Traction Control" showing. After turning off engine smelled "burnt" and side intake fans ran for a long time. (my dealer Tech did mention that Service ESC and Service Traction Control codes display for many different engine issues).

This has happened at 25mph, 43mph and 55mph. I usually drive in Sport mode, but tried all modes on way back home. Seemed to occur in all drive modes. I may have been mistaken, but, I felt that when I held the shift paddles in neutral mode and revved the engine it didn't miss...not 100% sure of this. I've never done a hard launch...but, have "floored" it a few times on long stretches.

Been in for a week with no progress, the one mechanic I really trust has two Corvettes (not C8s) ahead of me. I'll update with status when fixed.

April 12, 2021
Leaking fuel injector on cylinder #3, fouled spark plug, #3. Replaced both.
This was my second fuel injector problem.

New problem: December 6, 2021
We were on vacation and the car hadn’t been driven for about two weeks. Stuttered while I backed out of the garage to do a little cleanup. December 8th, 2021 had a dealership appointment to replace DCT filter and change DCT fluid. Leaving my driveway the car did the same familiar missing/surging, in addition to something new, abnormal pausing between transmission shifts. I drove on to the dealership.

Car has been at dealership for six days now. Only update from my tech is that there is some problem in the 1-3-5-7 bank and GM Tech has dealer tech sending specific diagnostics for review.
Additional notes: The Corvette has always used Pure (brand name) premium gasoline. The Corvette is always on battery charger when garaged. The car has about 2100 miles on the odometer. I’ve since found out that "Service ESC" and "Service Traction Control" pop up for just about every C8 problem you encounter.

I still love this car…but, I’m being tested. BTW, I’m #1 on the list at this dealership for a C8 Z06 order. I’ve been a Corvette enthusiast since my first one in 1968.

Update: December 14, 2021. Replaced injector #1. It was late when I picked up the car. Paperwork wasn't complete and filed. I'll get a copy tomorrow. Three injectors, all on the right bank. I suppose I should have insisted they replace #7 and get it over with.

**Could this be the same as the above stated Cylinder 1-3-5-7 problems? Anyone?
Thanks,

Daniel (Dan) Smith
River City Corvette Club – Chattanooga
NCM(L) Ambassador

Originally Posted by Phil1098

It's fine, I don't get worked up about this kind of stuff. My current plan is to let it sit in the garage until spring and see if they come out with a revised gasket. I will take it in for either the revised gasket or another of the same design. Either way, I'll get all new fluid under warranty and next fall, since GM has extended the filter change for free (that I didn't do in the first year), I'll get a new DCT filter and motor oil and filter. I'll continue to check it and if it still weeps I'll seal it externally.

Originally Posted by JABCAT

To simply ansswer [sic] your original questions, yes there have been owners on this forum with '22s who have experienced transmission issues & transmission replacements. Their posts can be found through the search feature.

Originally Posted by Inviktus

Ahhhhh he knows about FSCs. Tell me have you ever handled a class action with a FSC? I have never seen that done. Just so you know also, when ever I sign something and I read clauses I do not like or agree with but I know I have no choice, I circle that specific clause and write next to it "Contract of adhesion, not voluntarily agreed to." I could not tell you if it is necessary as I usually work things out lol.

Tell me though, without those voicing the issues that you of course do not think exist, how would I find these class members? I would not pay for mail sir and I sure as hell would not do anything for free...you see I already did my pro bono in law school.

You may be on to something though, I give you that.

Originally Posted by Tony Alonso

Wishing you a Merry "low or no leak" Christmas.

Originally Posted by rjsmith169

I'm not a lawyer, I'm a retired mechanical engineer. But, part of the engineering curriculum is mandatory courses in product liability, and ethics in relation to engineering.

And I wasn't being facetious about a class action lawsuit. If there are as many DCT failures as intimated, there would be ample grounds for liability claims. For example, was Chevy aware of the problems with Tremec's manufacture and assembly of the transmission? Did they identify the specific issue? When? What was their response? Have they taken corrective action? Issued a product recall or warning?

It's interesting that reporting indicates Chevy will assume production of the transmission from Tremec. Was that because of systemic issues at Tremec? Did they not follow Chevy engineering instructions?

You could get all that in discovery, and make it public, even if you don't prevail in court.

Ray

Originally Posted by Dave O

As far as the move to make the DCT in house in Canada. Per Zymurgy - It's a labor related move. They are pulling assembly from a supplier and giving it to a GM factory in Canada. Purely to help offset other job losses in Canada from GM plant shutdowns. Also, this change was announced in November 2020, so it's not a knee jerk reaction to fix the transmission issues. To make an announcement such as this means GM must have been planning it months ahead of the November 2020 announcement. At that point in time there weren't enough C8''s in operation to make GM think Tremec wasn't capable enough to assemble the transmission correctly. See the post below.

https://www.corvetteforum.com/forums...post1604395279

Originally Posted by rjsmith169

Ahh, the old "search feature" response. If these issues are so pervasive I would think you would have a ready reference of victims. Any scientific argument requires credible sources who provide proof. I have yet to read any account of a structural failure of a DCT. Clogged oil lines? Yes. From metal shavings trapped in the filter as designed? Yes. Shavings that were the result of improper break-in? A lack of lubrication? A design flaw? Who knows? The question is this: Is the problem systemic or is it not?

I bought a 2001 Z06. The forums were filled with stories of wildly high oil consumption. The stories were true. Chevy analyzed the reports and the parts involved and concluded the rings and cylinder bore liners were incompatible. They made a running production change in April 2001 and my car, built in early June of 2001 had those production changes. I knew that because Car & Driver published that information so I was comfortable buying one. I kept that car for 18 years. It never leaked or burned any oil. See my web sit at:

http://www.rjsmith.com/z06.html

Was there an initial problem? Yes. Did Chevy correct the problem? Yes, rather quickly because it was costing them money. If there were DCTs that had the high failure rate implied, Chevy would be swamped with corrective action under warranty which would cost them big bucks. I think they would find the problem and heads would roll. Junior heads, granted, because managers are never responsible it's always the grunt engineers. And they would have made running production changes.

With the plant shut-downs due to COVID and supply issues, you would think the engineers would have plenty of time to analyze dealer feedback and failed components and would have made immediate changes to the design, if applicable, to the assembly procedure ― don't use a hammer to install that seal ― or any other issue exposed. The real questions are: What caused the initial problem?; Is it fixable?; Was it corrected and if so when?; Which specific assembly number had the changes initially applied?



Seriously? The same gang that thinks JFK Jr. is still alive and will make an appearance at Dealey Plaza? You want me to believe anecdotal evidence from them as engineering proof of failure? I'm sure they think alien technology was used at Area 51 to engineer the Tremec DCT. And the aliens played a trick on Tremec.

I don't know if these "reports" are true, or whether they are intentional disinformation from disgruntled people who can not, for whatever reason, buy a C8. Yes, it happens.

Ray

Originally Posted by GTS Bruce

Have a 21. Absolutely no problems. Had the 2 missing quarts added during dealer prep and the engine oil/filter changed at 3000 miles along with the dct filter.

Originally Posted by JABCAT

The more you post, you’re showing yourself to be less intelligent than you think you are. I’m sorry you don’t have basic reading comprehension skills nor know how to use the search feature in this forum.

Here’s a very quick search result re: 2022 transmission issues: https://www.corvetteforum.com/forums...850-miles.html

Re: your lack of reading comprehension; the OP asked “have any ‘22s experienced transmission issues” to paraphrase. S/he didn’t ask how prevalent the issues were, just if there have been any reported. The answer to the OP’s question is yes there have been ‘22s with transmission problems. That’s not debatable.

You’re also incorrect about the LS1/6 oil consumption issues. The issue wasn’t fixed until the 2002 model year (I don’t consider 4 years “rather quickly”) and had been occurring since the introduction of the LS1 in 1998. I personally had 1 LS1 replaced under warranty in my ‘99 WS6 TA, and my ‘99 Camaro SS was also experiencing the same issue. Additionally, I personally knew at least 10 others in my car club in Phoenix, AZ, who had LS1s replaced under warranty between 1999-2002. Considering the size of the group at the time, 11 engine replacements was a significant number.

When one starts introducing irrelevant information or unrelated comparisons (i.e. JFK, aliens), they’ve lost their argument.

The start of your last paragraph sums it up nicely, “I don’t know if these reports are true”. Exactly, so any effort to refute them just makes you look silly

Originally Posted by rjsmith169

I'm not a lawyer, I'm a retired mechanical engineer. But, part of the engineering curriculum is mandatory courses in product liability, and ethics in relation to engineering.

And I wasn't being facetious about a class action lawsuit. If there are as many DCT failures as intimated, there would be ample grounds for liability claims. For example, was Chevy aware of the problems with Tremec's manufacture and assembly of the transmission? Did they identify the specific issue? When? What was their response? Have they taken corrective action? Issued a product recall or warning?

It's interesting that reporting indicates Chevy will assume production of the transmission from Tremec. Was that because of systemic issues at Tremec? Did they not follow Chevy engineering instructions?

You could get all that in discovery, and make it public, even if you don't prevail in court.

Ray

Originally Posted by rjsmith169

You don't have a C8, do you?

My reading comprehension is not a problem. It was good enough to get me an engineering degree. The best you can do is "Exercise Physiologist & College Professor.". Do you give massages?

Your Phoenix car club? Your bio says you are in Prosper Texas.

I had a 2001 Z06. There were running production changes made in April 2001. That's a documented fact. Those changes were carried over to the 2002 model year. My car had a June build date so it had the revised ring and sleeve combination. I kept that car for 18 years. Do you truly believe I would have kept a car that burned a quart of oil every 500 miles for 18 years? I sold that car and bought the Ferrari F430. See my web site for details.

I could afford to buy the C8 at $20,000 over MSRP and did so because I can. Apparently you can not. I guess there isn't much money in being an "Exercise Physiologist & College Professor."

And like so many people who talk loud, you're anonymous. I'm not anonymous, my name is Ray Smith, in Costa Mesa, CA., and I'm in the phone book.

Ray

Originally Posted by Inviktus

Not debating you at all here, as I have said you are clearly educated. Since you probably have more education on product liability than I do, I have to ask; those concerns you brought up, which I underlined, those would need to be bifurcated though correct? In other words those concerns a manufacturer faces, they would have to be separated into two buckets (which I am overgeneralizing): products that are defective and products that are defective and can harm.




Ohh snap, I like this guy.

Let's not all forget it is Christmas Eve though!