Compatibility: 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 Q&A: Q:What is Differences Between upstream and downstream O2 Sensor? .
