I have a 2009 Aveo GL with 105k miles on her. Within the last month, the car started running rough, the HOLD light and the engine light were flashing. We pulled off the coil and saw that #3 plug wasn't firing. We replaced the plugs but it didn't resolve the problem. I then found the recall pertaining to this issue. I took the car to a local Chevy dealer and the plugs and boots were replaced. It DID NOT solve the problem. I had ordered a coil before I discovered the recall I installed the it. All of the issues went away. Runs great! Gas mileage is back and no flashing lights.