How to Change the Coolant Sensor in a 2006 Chevy Cobalt How to Remove an O2 Sensor on a Town Country The Chevy Cobalt has three engine options: the 2.0-, 2.2- and the 2.4-liter. The 2.0- and 2.2-liter engines use the same sensor while the 2.4-liter engine is different. The 2.0-li...