C8 with 480 miles throws a check engine light
Safety Car
Joined: Jul 2013
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From: Granada Hills CA
Those are the same codes that my '22 Z51 HTC threw at around 300 miles. The CEL cleared later that day and the car drove fine. I did not bring to the dealer since the transmission break-in would continue to produce contaminants until 7,500 miles. The CEL did not reappear and I had the transmission fluid flushed and the filter replaced at 7,800 miles. The CEL at 300 miles was an anomaly.
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May be as simple as a loose spark plug wire. Hope that's all it is.
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Safety Car
Joined: Jul 2013
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From: Granada Hills CA
E-Ray, 3LZ, ZER, LIFT
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From: NE South Carolina
Those are the same codes that my '22 Z51 HTC threw at around 300 miles. The CEL cleared later that day and the car drove fine. I did not bring to the dealer since the transmission break-in would continue to produce contaminants until 7,500 miles. The CEL did not reappear and I had the transmission fluid flushed and the filter replaced at 7,800 miles. The CEL at 300 miles was an anomaly.
For those two reasons, had the dealer change the DCT filter that requires a flush prior when I had my first engine oil change per the OLM at ~12 months with only ~3000 miles. All on GM's dime.
I'll have the DCT filter changed again my 3rd service next year when all 11 quarts of fluid require changing. Satisfies the GM change filter at 7500 males and IMO is a good precaution!
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At least you know what the issue is. A visit to the dealer would be a good idea to get the problem resolved. Best of luck.
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if your trans didn't shift, by definition it's not the same response/lack of response to an issue as rapid htc's issues. therefore, act accordingly. unless you look forward to the car stopping somewhere. good luck. 
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Joined: Feb 2006
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From: Brentwood CA
Couldn't disagree more. They made them yesterday, today and tomorrow. The C8 is a great car, and ALL car manufacturers have their issues. You're only hearing from the people with issues, not the vast majority who do not. Check out this 40k mile review from Car and Driver if you want proof. 
To the OP. I hope your issue is resolve soon with either a flush or valve body replacement.
To the OP. I hope your issue is resolve soon with either a flush or valve body replacement.
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I normally don't respond to this type of dribble.......... but would love to know what Mr. Kaya considers a real sports car and what models of that car he has owned?
Op good luck. I'd expect its minor, fingers crossed, and like a root canal its sucks for a few days but a few weeks later its all good.