APPLICATION SUMMARY: 2007-2013 Chevrolet Silverado 1500,2007-2013 Chevrolet Avalanche,2007-2013 Chevrolet Suburban 2500,2007-2013 GMC Sierra 1500,2007-2014 GMC Sierra 3500 HD,2007-2014 Chevrolet Silverado 2500 HD,2007-2014 Chevrolet Silverado 3500 HD,2007-2014 GMC Sierra 2500 HD