stephfa
New member
I bought a previously owned 2000 coupe (automatic) with 4,000 miles on it in 2001. Primarily when the engine is cold and at slow speeds (10-15 mph) there's a metallic vibration that is very noticable from within the car. The Chevy dealer replaced one muffler but that didn't help and I've lived with it ever since. Now I noticed in a TSB that 97-98 models had a "similar" problem and that the culprit was exhaust muffler insulators. Could this be the problem? Have others experienced the same problem? Thanks in advance, this is my first posting.