I bought a one-previous-owner 2006 Corvette in July 2013. Since the day I purchased the car I have noticed that when I got over bumps, when I am on uneven ground or pavement, sometimes even when accelerating from a stop or going around corners my roof makes snapping and popping noises. I loosened the latches that secure the roof and reseated the roof and re-secured the latches but the roof still does the same thing.

I came across some information that GM had issued a couple of recalls for the roof panels of 2005-2007 Corvettes because the adhesive that secures the panel to the panel frame was defective or ineffectively applied. The fix in the original recall in 2006 was to inject some foam-type adhesive under the roof panel. Apparently that didn't resolve the problem because GM later issued a revised recall where they would install a completely new roof on vehicles that were still experiencing the problem.

According to the service records that my local dealership, Hedrick's Chevrolet here in Fresno, California, was able to obtain from the two dealerships that the original owner took the car to, both of the recalls were applied to my Corvette, yet I'm definitely still hearing a lot of the snapping and popping noises that the recall notice says is a symptom of the poor adhesion problem.

Does anyone else with a C6 hear the same kinds of sounds from your roof? Maybe this is just a normal thing that I need to get used to? Or is there another recall that I'm not aware of that I need to check into for the same problem?

Maybe I'm worried over nothing. Any feedback would be greatly appreciated.

This just started happening this past weekend. The car wasn't doing this prior to that. Here are the details.

When I turn off the car and open the door, the car starts doing "ding ding ding ding" audible alerts about once per second until I shut the door. I had other cars (not Corvettes) do that if you open the door with the ignition switched off and the headlights are turned on to warn you so you will turn off the headlights before the battery goes dead. That was my first thought when I heard it in my C6 but my headlamp switch was in the Auto position like I almost always have it and the headlamps were not on.

Does anyone have any idea why it started doing this all of a sudden? It may be coincidence, but maybe not so I'll mention it. Just a few minutes before it started doing this, my wife was adjusting the sun visor on the passenger side when the post on the right side of the visor fell right out of the housing and was kind of dangling there in my wife's hands with all the wires hanging down that power the vanity mirror etc. She was able to push the post back up into the housing and pushed the flat plate back up flush with the bottom of the housing. (I'm not sure the visor is really "fixed." Seems like a poor, cheap-o design to me). Shortly after that when we stopped and I opened my door, the dinging started.

Any suggestions would be helpful.

I got my Corvette back today with the new lumbar bladder assembly and switch from Hedricks Chevrolet. The lumber now works great -- but for $475 it should.

For anyone interested, attached are some photos of our new baby, the Monterey Red 2006 base model C6 Corvette. We think she's gorgeous!

 Andy, I take my hat off to you for your great suggestion. I called Chris Mays as you suggested and he said he can order the lever for the power seat switch for under $12 (plus shipping to me) and can order the door lock switch for the passenger side door for under $13. He'll ship them both to me after he gets them and I should have them by sometime next week. He said to tell you "Hi" and he appreciates you continuing to send him business. Regarding the high prices that Hedrick's Chevrolet quoted to me for the door lock switch, he said they must have been including shop labor to replace it in their quote to me. He had no idea why they told me I could not order just the lever for the power seat switch but instead told me I had to replace the entire switch.

Many, many thanks!

 I just sold my 1994 C4 base model Corvette (sniff, sniff, I loved that car but she was starting to have some problems and I wasn't willing to continue footing the repair bills) and purchased a gorgeous 2006 C6 Corvette base model in Monterey Red from a small dealership in Manteca with 46,000 miles on it. Overall the car seems really good except for some relatively minor cosmetic and functional problems.

1. The passenger power seat handle or lever is missing. The switch itself with its three buttons is still fully functional. You can move it forward, back, up and down but the plastic or nylon handle or lever that's supposed to snap over the three buttons on the switch is missing.
2. You can pump up the lumber bladder in the passenger seat but it will not bleed off air, so what you have is, in effect, a rock-hard bump in the middle of your back that you can't get rid of. I had a Chevrolet dealership here in Fresno look at it and they said the hose was crimped (pinched closed) by the seat to the point that it can't be uncrimped so air won't release from the bladder. They said someone evidently had the seat off and when they put it back on the hose was not routed properly allowing the damage to occur.
3. The door lock switch on the passenger door is functional but the plastic top part of the switch with the lock and unlock icons is missing.

I asked the dealerthip, Hedricks Chevrolet in Fresno, California, about the cost to repair these minor (at least they seem like they should be minor) problems. They told me:

1. You can't replace just the handle/lever for the power seat switch. You have to purchase the entire switch which, because it is programmable, is $260 plus labor to install.
2. You can't replace just the hose of the lumbar bladder, you have to replace the entire bladder/hose/switch assembly which is over $400 plus labor to install.
3. You can't replace just the plastic top portion of the door lock switch, you have to replace the entire switch which is $140 plus labor to install.

Here are my two questions.

• Is there someplace online (maybe a salvage yard site or something similar) where I can get just the handle/lever that snaps on to the power seat switch for the passenger seat? It seems crazy to me that you have to buy the entire programmable switch just to replace a 25 cent (or $5.00 or whatever) plastic lever that snaps onto it. See the attached photo of the lever/switch.
•  Is there any way to get the lumbar bladder to work without replacing the whole $400+ assembly?

Thank you very much in advance for any help and/or advice you can offer about this.

Neil
C6 newbie

Hedrick's Chevrolet says a lot of it is labor (at $185/hr) because it's under the water pump etc.

Sigh.

If not for the $560 price tag for the MSD replacment to GM's Opti-Spark -- and the fact that the MSD unit only has a 30 day warranty vs a 1 year warranty from the dealer for the GM Opti-Spark -- I might be tempted to try the MSD unit. I really feel like I need the much longer warranty, though, especially given the price I'll be paying to have this fixed.

Thanks for the info and opinions, though.

The Chevy dealership (Hedrick's Chevrolet in Clovis, CA) had the car several days and tested periodically until it the engine cut out on them after it had been running for a while. The tech was able to determine the problem was the Opti-Spark.

Turns out the problem with my C4 is Opti-Spark. Ugh! After spending the money to have the ignition control module and ignition coil replaced, I can't say I'm exactly happy to learn the problem remianed and turns out to be Opti-Spark -- another $1,400 to repair. Sigh.

What's rather troubling is that the guy I bought this 1994 Corvette from a little less than two years ago had the Opti-Spark replaced only about a month before I bought the car. He didn't have the work done by a Chevy dealer, he had it done by another mechanic he used periodically so I don't know whether GM parts were used or if they were aftermarket parts, but it's troubling just the same.

Does anyone know what would cause the Opti-Spark to fail again in less than two years time?