Tuesday, February 28th, 2012 AT 2:54 PM
I have an 05 standard cobalt, - This the oxygen sensor before the cat. Converter or after the cat. Converter? How do I know which O2 sensor this is and do I need a special socket tool for the job? Also can I buy the part NTK Oxygen Sensor Part No. 21546 from Advanced auto to fix this problem?