SUBURBAN 2500 2000 - 2011 , 2002 - 2006 AVALANCHE 2500, GM CHEYENNE 2500 2011-2012, 2001 - 2007 SILVERADO 1500 HEAVY DUTY 2007-2008 & SILVERADO 2500 HEAVY DUTY 2007-2012, SILVERADO 3500 GVW& HEAVY DUTY 2005-2010,YUKON XL 2500 2010-2011 EXPRESS 3500 CUTAWAY 2009-2011