So I have a 2022 3LT Z 51 convertible that has 44,000 miles on the present time. I bought the car from McMullen Chevrolet and had it delivered here to Oklahoma on Halloween 2020.

Since I've owned this car, I've had replaced, under warranty, the transmission at 20,000 miles, the air conditioner condenser at around 16,000 miles, the amplifier for the Bose stereo at about 18,000 miles, and then about four months ago, at 40,000 miles they had to replace the arm mechanism on the hardtop convertible because the one on the driver side cable snapped and I had to replace the entire arm, no longer under warranty, but the cost was subsidized by GM.

About two weeks ago, I was driving the car and all the fans in the back came on, and the engine temperature started rapidly rising. got up to about 270°F, I was close to home and was able to limp back to the house and noted that the coolant fluid was low, so I brought the car back to the dealer to have that looked at as well as the oil change and recommended transmission fluid change given that the transmission fluid life was low. It was recommended that that be changed. They found a hairline crack in the reservoir for the coolant and replaced that, the cost of this was partially subsidized by GM as well. Incidentally, I found out that there is no sensor that monitors the coolant levels so I never had any warning from the system that it was low on coolant until the engine tried to overheat, which is a sensor that both of our Mercedes SUVs have on them.

So I picked up the car today after this work was done, and once I left work, while shifting from first gear to second gear. There was a clunk and a idle creep disabled message on the DIC and then a service transmission message on the DIC, and the car now only has first gear and third gear, moving forward, no reverse and no neutral. There is a tow truck on its way that should arrive in about 2 hours that will be taking the car back to the dealer to see what is wrong.

Fun, fun, fun.

 

I guess you got your money's worth and your use out of the car with 44,000 miles on the clock. Maybe time to part ways and start fresh again.

 

dang

 

So you had a 2022 delivered in 2020? That's your problem. Your car was from the future.

 

 

That must be it! Actually, I had it delivered in October 2021. My mistake.

 

Crap. I've heard of lemons but this is absurd. .. They're nice cars and all, but still, if I had that experience with a car (or anything else) I would never buy a product from that company again. ... ..

Get it fixed, and trade it in. .......

The old rule is that it's cheaper to fix a car than it is to replace it, UNTIL you no longer trust it to get you home every time you drive it. (from Klik and Klack)
Time to let it go, and if/when another buyer calls you about the CarFax, let 'em know, .. hopefully before they go down the rabbit hole with it.

My 2¢

 

It's time to let this one go.

 

That is a lot of problems in those miles. Good luck with the current repair, but this does not look good for long term reliability.

 

I'm curious how all these fluids get low with no signs of leakage. Anyway, I would get rid of that baby as soon as it's fixed.

 

Sell it. You are having too much fun. It’s time to share that fun with a new owner. Sam

 

Update: dealer said the transmission appears to be working normally this morning with them driving it a few miles but they were able to pull up all the codes showing the transmission issues I had yesterday but they were historical and not active at present. They have no idea why this had happened. They decided to reset the system and are going to hold on to the car and drive it around some more and see if the issue repeats itself.

Fun, fun, fun!

 

I would sell it asap if I were you, I can't imagine what repairs for the C8 will be when it goes out of warranty. If you do keep it, an extended warranty is a must with these cars.

 

Make sure to have them check the battery. These cars are really fussy about proper voltage, if the battery is weak it can start throwing codes which aren't necessarily true, but because of a weak battery all the components aren't getting the proper voltage. Somewhere in this C8 forum over the past 5 years there have been a few owners who have had similar problems and it ended up being a bad or weak battery, once replaced it fixed all the issues.

 

^^^
I agree it is worth testing the battery to be sure that isn't the problem but I disagree that C8's are overly sensitive to low voltage. Yes, a bad or low battery will make the car throw some codes but it is usually pretty obvious when a battery is that bad. If tested properly, a bad battery will very rarely pass testing.

These cars periodically have a problem which goes away on it's own. The very act of disconnecting a battery will reset the computer. People will have a problem and replace the battery without testing it and have the problem go away and then attribute it to the battery. But it is quite likely they would have had the same result if they had disconnected and reconnected the same battery.

 

Move on to the next one

 

I think your fun, fun, fun will begin when Daddy takes the C8 away....

 

Especially with the deals on new ones. MacMulkin currently has new C8 HTCs advertised with over $10K off on some of them. With that many issues on yours, I think I'd just look into a new/different one at this point. From my experience with 13 Vettes for every gen from C4-C8, most are pretty reliable, but it seems like when you get one with issues, the problems just keep coming. Better to get out now before you're paying the bill out of warranty.

 

Saying goodbye wasn’t so difficult. On its way to Porsche dealer down south. Mixed feelings many many compliments and there’s nothing like the acceleration and htc experience. But the multiple failures I had, tarnished the experience

 

The OP may still be eligible to Lemon Law his vehicle depending on how long it was out of service for the earlier repairs. My state allows one to invoke the Lemon Law several years later if it previously qualified but is now out of protection.