Please check fitment notes & description for accurate information. 2003 Chevrolet Express 1500 4.3L 2003 2007 Chevrolet Express 1500 5.3L 2003 Chevrolet Express 2500 4.3L 2003 Chevrolet Express 2500 6.0L 2003 Chevrolet Express 3500 6.0L 2003 GMC Savana 1500 4.3L 2007 GMC Savana 1500 5.3L 2003 GMC Savana 2500 4.3L 2003 GMC Savana 2500 4.8L 2003 GMC Savana 2500 6.0L 2003 GMC Savana 3500 6.0L Oxygen Sensor's Location: How do I know the O2 sensor is good or not? Check engine light on A reduction in fuel economy. .
