Please check fitment notes & description for accurate information. 2004-2005 Buick Rainier 4.2L 2004-2005 Chevrolet Colorado 2.8L 2004-2005 Chevrolet Colorado 3.5L 2004-2005 Chevrolet Trailblazer 4.2L 2004-2005 Chevrolet Trailblazer EXT 4.2L 2004-2005 GMC Canyon 2.8L 2004-2005 GMC Canyon 3.5L 2004-2005 GMC Envoy 4.2L 2004-2005 GMC Envoy XL 4.2L 2004-2005 GMC Envoy XUV 4.2L 2004-2005 Isuzu Ascender 4.2L Oxygen Sensor's Location: How do I know the O2 sensor is good or not? Check engine light on A reduction in fuel economy. .
