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Old 05-25-2018, 12:06 AM   #15
Mize442
 
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No wiggle at all in the pulley. I tried moving it tapping on it gently with a rubber mallet while holding the front. Maybe it'a bad bearing or something.

Thank goodness it's still under warranty. And i am really glad to find this problem before the upcoming track day.

it would have really sucked to have a major problem at speed.

We'll see what the tech say's. I would be less than amused if they say oh it's normal. since it get louder now everytime i drive it. And there was no sound 500 miles ago.
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Old 05-25-2018, 12:10 AM   #16
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Maybe one of the Performance Shops on the forums will take a listen and let me know if they have experienced anything like this
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Old 05-25-2018, 06:55 AM   #17
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I have only driven 2 CA6 ZL1s, both A10s. Both had a noticeable whine. I assumed this was blower whine. If the trans and SC both whined then I also assume the competing whines would be at different frequencies.

So I guess only Manual A10s can tell us if they hear SC whine.
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Old 05-25-2018, 11:01 AM   #18
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I didn't think my trans made a sound until someone started a thread about it a while back. If you stick your head down by the bottom of the car while it's running in the garage, you can barely hear it. Definitely can't hear it inside the car. Only whine inside is either the blower or my wife. Lol
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Old 05-25-2018, 11:15 AM   #19
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Originally Posted by 17CamaroZL1 View Post
I didn't think my trans made a sound until someone started a thread about it a while back. If you stick your head down by the bottom of the car while it's running in the garage, you can barely hear it. Definitely can't hear it inside the car. Only whine inside is either the blower or my wife. Lol
LOLOL
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Old 05-25-2018, 12:11 PM   #20
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i think it has to do with the temps getting hotter maybe.. mine has about 13,000 miles and now thats 90 plus out it seems to be louder. I also took the noise damper off the inside of the lid..

I also cut the bottom of my box out like a lot.. that made a big difference in noise and slow take offs no more stutters or falling on face..
Did you ever take a picture of the airbox after you cut it
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Old 05-25-2018, 12:26 PM   #21
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I didn't think my trans made a sound until someone started a thread about it a while back. If you stick your head down by the bottom of the car while it's running in the garage, you can barely hear it. Definitely can't hear it inside the car. Only whine inside is either the blower or my wife. Lol
HAHA!
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Old 05-25-2018, 12:38 PM   #22
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Boy this thread got off track a bit. I posted a video that has the sound. What I thought was the blower whine. I think it's a bad upper pulley bearing or something similar.

Anyone else experience this?
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Old 05-25-2018, 06:23 PM   #23
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Boy this thread got off track a bit. I posted a video that has the sound. What I thought was the blower whine. I think it's a bad upper pulley bearing or something similar.

Anyone else experience this?
Haven't experienced it, but do agree, sounds like the upper pulley bearing is failing.
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Old 05-25-2018, 06:31 PM   #24
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Update. The idler pulley has failed. Dealer order a replacement. No car for a week. Damn that sucks. But I am glad to discover this problem now and not on the track
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Old 05-25-2018, 08:08 PM   #25
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it was a pulley...


.
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Old 05-26-2018, 10:43 PM   #26
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Glad the issue has been found and you'll be back on track soon.
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Old 05-27-2018, 05:43 AM   #27
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+1

Is this the one that failed?

https://www.gmpartsdirect.co/oem-par...YtMmwtdjgtZ2Fz
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Old 05-27-2018, 01:53 PM   #28
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I believe it was part #9
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