new old problem to resolve
obviously it is something and, until it gets figured out, it could be any of a variety of causes. based on the sound of the noise, when it happens, the affect of temperature and where it appears to be coming from ( from the drivers seat position ), it sounds like it is just from the
rear passenger wheel area. and with it being a relatively clear sound ( only slighted muted ), it's location is and source are sounding more and more like what BMF C6 suggested. I'm taking the car back to the shop this Saturday for the leveling bolt install.
I'll see if i can talk him into checking out the rear quarter panel area too.
Just thinking that in cold weather the plastic gets stiff and makes noise and as the temperature rises it softens up. There is a large cabin vent behind the rear passenger side speaker that is one of the biggest ways for noise (road and otherwise) to enter the cabin. It's a plastic frame with just thin rubber flaps that allows cabin pressure relief when the doors and lid is closed but it is definitely a major way for noise to enter the cabin. When I did my sound deadening project years ago I actually put CDL over it and used a 3/4" socket to cut some holes to allow the pressure out but also covered vent and it made a hell of a difference on cabin road & other noises entering the cabin.
You can only get to this vent by removing the rear passenger side wheel well liner, it snaps out only towards the outside but is located right behind the rear passenger side speaker.
there could be something in these areas making the noise..........
Just a shot.............. Good luck
Just thinking that in cold weather the plastic gets stiff and makes noise and as the temperature rises it softens up. There is a large cabin vent behind the rear passenger side speaker that is one of the biggest ways for noise (road and otherwise) to enter the cabin. It's a plastic frame with just thin rubber flaps that allows cabin pressure relief when the doors and lid is closed but it is definitely a major way for noise to enter the cabin. When I did my sound deadening project years ago I actually put CDL over it and used a 3/4" socket to cut some holes to allow the pressure out but also covered vent and it made a hell of a difference on cabin road & other noises entering the cabin.
You can only get to this vent by removing the rear passenger side wheel well liner, it snaps out only towards the outside but is located right behind the rear passenger side speaker.
there could be something in these areas making the noise..........
Just a shot.............. Good luck
The Best of Corvette for Corvette Enthusiasts
when i went to drive the next morning, the noise was still present, I confirmed with the shop this morning that they indeed remove the insulation (they say that they did).
I was 100% sure that this was the issue. back to the drawing board. thinking about taking it to body shop and have them remove the fenders. maybe see if anything looks out of the ordinary.
I'm pretty sure it is not gas tank related, as the noise is the same whether the tanks are full or empty. the only variable I can see is temperature. about 65°, no noise. in the summertime, on the rare occasions when the temps to drop into the
low 60's, the noise is present. as it gets closer to 65° it lessens and finally disappears. it also seems to be loader as the temp's getter colder. currently, we are experiencing morning temps as low as 32° (no comments from the east coast people. 32° is still cold).

i've tried running from almost empty ( 15 - 16 galllon fill up ) to full. this doesn't nothing to change the sound. again, if you can imagine the sound of an ice chest, filled 50/50 water & ice, sloshing around ( and about as loud ), that's the best that i can describe.
only going over bumps and only when below 65° F.















