Hey all, when I bought this car over a year ago with the GM certified warranty it rattled. The dealer said they replaced the O2 sensors and the rattle was not noticeable from in the cabin anymore. However that didn’t last long. About 2 weeks after that it was back, brand new O2's and all. Brought it back to dealer and got another set of new O2's. A week or 3 after that it was at it again, and this time, even with the new O2's I drove around with the windows down and the shop guy with me and you could still hear it rattling some.
I gave up on the weekly trips for new O2's, but the warranty is up and now I want to fix whatever it is!
Is it really the O2's or maybe cats, other exhaust stuff, maybe even clutch chatter???
Totally stock (for now) convertible. The rattle / chatter is most noticeable when taking off from a stop or very slow speeds with medium to light throttle. But you can also hear it some at idle.
Any help is greatly appreciated!