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Originally Posted by schecter7
Sorry for the delay. Here is a snapshot of my service record. My rattle was gone for good - kudos to Capitol Chevy in Austin  Hope this helps! |
I printed out your work order and took it in with me. Tech thanked me for the help, however, upon inspection, mine were fine. So he spent the next hour going over every inch of the exhaust, everything functioned properly. Then he pulled up a GM bulletin that finally made sense. "Techs should install 2 silicone O-rings over each of the exhaust valve springs to dampen the low RPM rattle".
My O-rings are on order. I'll keep you guys posted.