2006 Chevy Cobalt 4 cyl Front Wheel Drive Automatic 38000 miles
Hey I have a 2006 Chevy Cobalt with 38xxx miles on it. A couple months ago GM called and said there was an ECM reprogram campaign. Thinking it was neccessary I took it in and had this done. After I did this I began to noticce changes in the cars performance and fuel consumption. Prior to the reprogram I was very satisfied with the power and response from my little car, after wards the transmission will not shift at times and the engine is often unresponsive or late to my pedal commands. ALso my gas mileage went from 32 mpg to 26 mpg after the reprogram which is suspicious because that is when the new EPA estimates came out for gas mileage. Is there anyway I can reset my ECM to the original factory settings and undo the reprogram or should I buy a new ECM.
Tuesday, January 20th, 2009 AT 1:09 PM