^ Iirc, the imrc gasket he's referring to is on 04+ vulcans.
That I understand. However, my '01 suffers from the same symptoms 2. and 3 (described above). Also, even in Neutral, with A/C running, car shakes. If A/C is off and car in Neutral, I don't feel any shaking. I my car has no said part/gasket, what can be causing those symptoms?