Squeaking…
Thread Starter
Cruising
Joined: May 2024
Posts: 13
Likes: 5
From: Los Angeles
Squeaking…
I bought my C8 brand new a couple of months ago and now it’s making these weird squeaking noises from behind, what could it possibly be??? Anyone else experience this???
Can be heard @ 0:14, 0:16, 0:21, and 0:49
Can be heard @ 0:14, 0:16, 0:21, and 0:49
Drifting
Joined: Aug 2014
Posts: 1,325
Likes: 872
From: Hiding In Your Closet...
My C7 had the same issue right off the truck. Drove me and the service tech nuts.
Then an old Corvette guy told us to use the silicone lube on all the weather stripping and violá... no more squeaking.
Then an old Corvette guy told us to use the silicone lube on all the weather stripping and violá... no more squeaking.
Last edited by INTIMIDAT3R; May 19, 2024 at 09:40 PM.
Thread Starter
Cruising
Joined: May 2024
Posts: 13
Likes: 5
From: Los Angeles
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Thread Starter
Cruising
Joined: May 2024
Posts: 13
Likes: 5
From: Los Angeles
Sounds like an easy fix
Last edited by vexeddonut; May 19, 2024 at 01:18 AM.
Melting Slicks
Joined: Aug 2017
Posts: 2,193
Likes: 2,203
From: Massachusetts
Any silicone lube on the rubber gaskets. (Doors, remove top, rear truck hatch)
Call me crazy but I have been using WD40 on my fan belts for 40 years. You can spray it on not running so it doesn't get blown all over.
Is the noise tied to the engine rpm or is it related to motion, bumps?
Good luck.
Call me crazy but I have been using WD40 on my fan belts for 40 years. You can spray it on not running so it doesn't get blown all over.
Is the noise tied to the engine rpm or is it related to motion, bumps?
Good luck.
Race Director
Joined: Mar 2007
Posts: 11,373
Likes: 8,531
I heard the squeak at the times indicated. Does not sound so much like the weatherstip squeak. What it does sound like is the occasional squeak my muffler cylinder deactivation exhaust flow control valves make when they transition between V4 and V8 mode. And also, with NPP, the tailpipe flow control valves will open and close depending on the Driver Mode and throttle demand. In Tour they are closed at idle an benign driving but twill open with spirited driving. With Sport the are open at idle and most driving scenarios. With Track they open nearly all the time. But even in Sport of Track, they will close at times to meet Federal Bypass Standard. The point is, those valves can open and close during normal driving, and if they squeak, which mine do from time to time. you can hear it.
I think you can test it (if you have NPP) Just sit in the driveway with the engine running and idling. Switch the drive mode between Tour and Sport. See if you hear the valves move or squeak. If you dont have NPP, the other AFM valves in the muffler could be the ones that squeak.
I think you can test it (if you have NPP) Just sit in the driveway with the engine running and idling. Switch the drive mode between Tour and Sport. See if you hear the valves move or squeak. If you dont have NPP, the other AFM valves in the muffler could be the ones that squeak.
Last edited by Andybump; May 19, 2024 at 09:43 AM.
Safety Car
Joined: Jun 2002
Posts: 4,751
Likes: 2,498
From: Buckeye, AZ
St. Jude Donor '12-'13
Thread Starter
Cruising
Joined: May 2024
Posts: 13
Likes: 5
From: Los Angeles
Any silicone lube on the rubber gaskets. (Doors, remove top, rear truck hatch)
Call me crazy but I have been using WD40 on my fan belts for 40 years. You can spray it on not running so it doesn't get blown all over.
Is the noise tied to the engine rpm or is it related to motion, bumps?
Good luck.
Call me crazy but I have been using WD40 on my fan belts for 40 years. You can spray it on not running so it doesn't get blown all over.
Is the noise tied to the engine rpm or is it related to motion, bumps?
Good luck.
Thread Starter
Cruising
Joined: May 2024
Posts: 13
Likes: 5
From: Los Angeles
I heard the squeak at the times indicated. Does not sound so much like the weatherstip squeak. What it does sound like is the occasional squeak my muffler cylinder deactivation exhaust flow control valves make when they transition between V4 and V8 mode. And also, with NPP, the tailpipe flow control valves will open and close depending on the Driver Mode and throttle demand. In Tour they are closed at idle an benign driving but twill open with spirited driving. With Sport the are open at idle and most driving scenarios. With Track they open nearly all the time. But even in Sport of Track, they will close at times to meet Federal Bypass Standard. The point is, those valves can open and close during normal driving, and if they squeak, which mine do from time to time. you can hear it.
I think you can test it (if you have NPP) Just sit in the driveway with the engine running and idling. Switch the drive mode between Tour and Sport. See if you hear the valves move or squeak. If you dont have NPP, the other AFM valves in the muffler could be the ones that squeak.
I think you can test it (if you have NPP) Just sit in the driveway with the engine running and idling. Switch the drive mode between Tour and Sport. See if you hear the valves move or squeak. If you dont have NPP, the other AFM valves in the muffler could be the ones that squeak.
