So my 2010 SS LS3 just developed this harmonic vibration hum sort of thing some have mentioned but not a rattle. Car had a GMPP touring axle back when I bought it and have since replaced with an Atak axle back. The harmonic vibration started before I switched axle backs and has been getting worse. Can anyone elaborate where exactly in the exhaust the vibration is supposed to be coming from? Also I saw a guy on this thread mentioned it ended up being some sort of shaft. I have a click sound that's progressively getting worse when I let off the clutch to accelerate from a stop and even shifting into 2nd and 3rd. Any ideas?
2010 Camaro 2SS/RS Inferno Orange Metallic LS3. K&N Cold Air Intake. Borla Atak Axle Back. BMR 1" Drop.