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!
ESCALADE WITH 5.3L Y PIPE UNDERBODY CONVERTER ASSEMBLY INCLUDES 2 CONVERTERS TEST GROUP 4GMXT06.0187 LEV1 SULEV CA OR NY APPROVED - CARB COMPLIANT D798-15 PER CARB REQUIREMENTS THE TEST GROUP SHOWN HERE MUST MATCH THE TEST GROUP OF YOUR VEHICLE. CALL FOR ASSISTANCE IF NEEDED (713)722-9212