Rossi6998

I have a creaking noise coming from my 2009 C6. I only seem to notice the noise going 5-10 miles per hour, generally in a parking lot. It seems to occur most when the car shifts its weight from side to side, like when you would hit uneven payment or a bump. The car does not seem to creak when going street or freeway speeds. I have had this creaking for as long as I can remember. Not sure if the creaking is getting worse or if it is just starting to annoy me now.

Could this possibly be normal flexing of the car, or maybe the suspension needs to be lubed??? I can tell you the only thing I have lubed is the exhaust springs to help prevent it from squeaking.

I am aware of the Rear Axel Nut issue and the Rear End Link issue. I do not believe it is either one of these issues. The creaking is coming from outside the car, so it is not the dash or anything inside the car.

Would like to know if anyone else has this issue and/or your thoughts...

Thanks

dvilin

I assume it is not the targa top.

Mad*Max

could it be bushings in the suspension?

franman69

Creaking dash and creaking (popping) from the removable top are two common issues. The top can be lubricated (search... many threads). Creaking dash not so easy to fix.

Drive faster and you won't notice it.

not08crmanymore

If it goes away when warmed up or high speeds it's probably the rear diff fluid that needs to be changed.There's a DIY up in FAQ section and/or the dealer can do it.Had that issue in both my 08's.FLUID CHANGE TAKES CARE OF IT.

Red08

When I first purchased my 08, I had a creaking problem that turned out to be the targa top. It wasn't serious, just an occasional noise. Either its mostly gone away, or I don't pay attention to it anymore.

Rossi6998

Thanks for the input so far. It is not the Targa Top issue or the rear differential fluid issue. I am also aware of these issues. In fact, I changed the rear differential fluid a couple of weeks ago. The creaking problem existed prior to me changing the fluid.

Rossi6998

Its not the Targa Top or the dash. This sound is definitely coming from the outside and believe from under the car.

RekaRoyal

I had a persistent creaking noise as you describe when my 2010 was new. It sounded like it could've been the differential or the dashboard, but it was under the center of the car. That's why it sounded like it was coming from everywhere.

A Corvette specialist at the Chevrolet dealership diagnosed it as improperly torqued bolts on the torque tube plate. Not sure what the actual plate is called, but it's been two years...

He did the repair under warranty and it solved the problem. Car has not creaked since he did the fix.

I feel your pain on this one. If he hadn't found the problem I certainly would've gotten rid of the car.

franman69

interesting. . I may have to check into these myself... I just deal with the creaks that are left in my car as I drive it hard and I expect it to moan a little bit!....

Boomer111

Well it is common for the end links to make some noise. In my case I had lots of creaking and after I installed new end links and the thicker tunnel plate most mine disappeared.

My sun visors would make noise too. Lots of noise can come from the removable roof having to do with the latches and pins.

Do a search on the top.

The torque tube plate is what I replaced with a thicker one, at least I assume that this is the same as the tunnel plate. It has about 40 bolts and is best done when the H pipe is removed for a exhaust manifold change. The thicker tunnel plate will stiffen up the car laterally as well as keep some heat out of the console area, it has a heat shield material mated to it.

RekaRoyal

Torque tube plate and tunnel plate sounds like the same thing to me.

In my case, they didn't need to replace it. Just torque it to proper specs.

Rossi6998

***Additional information***

I had time today to put my car on my portable lift. As I was lifting the car, it made the usual creaking or popping noise as the lift was taking the weight of the car off the shocks and suspension. It was at this point I realized (or believed) that this is the same creaking I am hearing at low speed as mentioned in my original post. Now, I realize it still could be anything, but at least I know it is not an engine or moving part issue.

The Torque Tube/Tunnel Tube plate story is interesting. I may have to put the car back on my lift next week and take a look. I quickly looked over the undercarriage, and everything appears to be tight. I don't notice any obvious wear.

Based on what I can tell, I don't think this noise is anything serious, just annoying.

Boomer111

The muffler cans hang via a spring attachment, kinda hard to see while on the ground. These have been known to squeak. Mine did and if I remember correctly I just sprayed on some lube.

Another reported known noise maker.

Rossi6998

I know that sound. It's not the exhaust or muffler cans. Thanks for the input.

Rossi6998

This is the first I have heard of this TSB. Does anyone have a copy of it that I can read?

not08crmanymore

Google it..I heard a little about it a year or two back but didn't pay much attention.Something about the frame needing welding,cracked,something..

Boomer111

Sounds like the problem my old M3 E46 had. Weak aluminum rear suspension frame.

Rossi6998

If I had to guess, I would say this is the problem... Thanks for the input from everyone...

Rossi6998

For those interested in additional information, see GM Document ID #2257485.