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Unexpected sizzle

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Old Jul 30, 2014 | 09:59 PM
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Default Unexpected sizzle

After driving home tonight, I pulled the Vette into the garage (2013 C6 M6 Coupe) and turned the car off. I went to the rear, popped the hatch to get something out, and I heard a prolonged series of sizzles. It sounded a lot like water hitting a hot pan. Haven't heard this before. Definitely sounded close, as I was standing in the rear. Closed the hatch, it lasted another few secs, and stopped. Any thoughts on what it might be? This one caught me off guard.
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Old Jul 30, 2014 | 10:01 PM
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Normal, water condensation from the AC unit dripping on the exhaust...
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Old Jul 30, 2014 | 10:06 PM
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Originally Posted by RAGGDOLL
Normal, water condensation from the AC unit dripping on the exhaust...
Interesting...this was definitely not the hottest day by far. I've run the a/c a lot, but this was the first time I've heard this. It's my
DD, so I'm always at the rear hatch getting my gym bag, etc. after driving home. This was just the first time I've heard this dripping/sizzle. Thanks for the input!
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Old Jul 30, 2014 | 10:08 PM
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I agree.. condensation hitting the headers on my car.. I hate it, so I shut off the AC a mile before I get home and let that water drip out before I hit the garage.
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Old Jul 30, 2014 | 10:18 PM
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Originally Posted by franman69
I agree.. condensation hitting the headers on my car.. I hate it, so I shut off the AC a mile before I get home and let that water drip out before I hit the garage.
Seemed more like it was coming from somewhere in the rear of the car. That's what was so puzzling...
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Old Jul 30, 2014 | 11:10 PM
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Originally Posted by HarleyEarl1953
Interesting...this was definitely not the hottest day by far.
It's not the heat...it's the humidity...
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Old Jul 30, 2014 | 11:48 PM
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There are also drains in the back rails around the hatch not sure where they come out underneath but I watched mine swallow a pile of water while washing it.
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Old Jul 30, 2014 | 11:53 PM
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Originally Posted by franman69
I agree.. condensation hitting the headers on my car.. I hate it, so I shut off the AC a mile before I get home and let that water drip out before I hit the garage.
I do that myself, seems to work.
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Old Jul 31, 2014 | 06:18 AM
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Originally Posted by ruxvette
It's not the heat...it's the humidity...
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Old Jul 31, 2014 | 06:29 AM
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That is the GM designed plugged A/C drain warning sounder. If the A/C drain plugs water can back up into the passenger footwell soaking the carpet and eventually shorting the BCM which is a very expensive issue. The sizzle you hear is water draining normally onto the hot exhaust indicating the drain is NOT plugged. You need to worry if you DON'T hear it. As long as it sizzles the drain is working properly.
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Old Jul 31, 2014 | 10:37 AM
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Man, I am glad this forum is here. I am really having to learn all of these nuances about the Vette. So many different sounds/noises that are apparently normal, but I just never experienced in my previous cars. Then again, my previous cars never had 430HP

Thanks for the continued information!
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Old Jul 31, 2014 | 01:55 PM
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Originally Posted by ruxvette
It's not the heat...it's the humidity...
My first thought also...
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Old Jul 31, 2014 | 02:06 PM
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Heard the same thing just the other day.
This post confirms it for me.
Thanks for posting.
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Old Jul 31, 2014 | 02:13 PM
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I'm thinking its the fuel crossover pipe leaking gas down on your exhaust pipes........just kidding.....
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Old Jul 31, 2014 | 06:52 PM
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condensation hitting the headers. had it on the C5 also

Clif
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Old Jul 31, 2014 | 07:14 PM
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Originally Posted by TnRZ06
There are also drains in the back rails around the hatch not sure where they come out underneath but I watched mine swallow a pile of water while washing it.
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Old Jul 31, 2014 | 07:25 PM
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Hmmm.... Vettes are so hot they sizzle.
Got to agree with that!
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Old Jul 31, 2014 | 07:57 PM
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I was just going to post that same question tonight. Now I got my answer
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Old Jul 31, 2014 | 08:00 PM
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CF Rocks
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Old Jul 31, 2014 | 08:04 PM
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Yup condensed water hitting something hot would do that, nothing to worry about here.
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