My brother told me the CEL on his 2009 Cobalt SS turbo started flashing at him the other day while he was driving. He said he felt no hesitation or power loss. He checked the codes in the Torque app and said there were something like 135 misfire counts on all 4 cylinders and apparently even a cylinder 5 misfire code. Ehh? Random computer freakout or something else? He cleared the codes and ran it again for the rest of the day and no new misfire codes came back