A faulty Oxygen Sensor is a primary reason for Failure of a Catalytic Converter. Car Manufacturers Recommend Replacement of O2 Sensors at 60,000 miles. If you are purchasing a New Catalytic Converter be sure the Oxygen Sensors are Checked and Operating Correctly!
MONTANA WITH 3.4L FWD TEST GROUP 2GMXT03.4142 LEV1 ULEV CA OR NY APPROVED - CARB EXECUTIVE ORDER D193-115 PER CARB REQUIREMENTS THE TEST GROUP SHOWN HERE MUST MATCH THE TEST GROUP OF YOUR VEHICLE. CALL FOR ASSISTANCE IF NEEDED (713)722-9212 E IF NEED