Compatibility: 2007-2008 2010-2012 Chevrolet Silverado 2500 HD 6.0L 2007-2011 Chevrolet Silverado 3500 HD 6.0L 2007-2008 2010-2011 GMC Sierra 2500 HD 6.0L 2007 2009-2011 GMC Sierra 3500 HD 6.0L Q&A: Q:What is Differences Between upstream and downstream O2 Sensor? .
