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 5.7L DRIVERS AND PASSENGER SIDE CONVERTERS TEST GROUP YGMXA05.7185 LEV LEV1 OR YGMXA05.7194 TIER1 OR YGMXT05.7189 TIER1 CA OR NY APPROVED - CARB COMPLIANT D280-101 PER CARB REQUIREMENTS THE TEST GROUP SHOWN HERE MUST MATCH THE TEST GROUP OF YOUR VEHICLE. CALL FOR ASSISTANCE IF NEEDED (713)722-9212