Please check fitment notes & description for accurate information. 2003-2005 Cadillac Escalade 5.3L 2003-2005 Chevrolet Avalanche 1500 5.3L 2003-2005 Chevrolet Silverado 1500 5.3L 2003-2005 Chevrolet Suburban 1500 5.3L 2003-2005 Chevrolet Tahoe 5.3L 2003-2005 GMC Sierra 1500 5.3L 2003-2005 GMC Yukon 5.3L 2003-2005 GMC Yukon XL 1500 5.3L Oxygen Sensor's Location: How do I know the O2 sensor is good or not? Check engine light on A reduction in fuel economy. Your catalytic converter fails unexpectedly .
