2003 Chevrolet Silverado 2500 (listed for Base / LS / LT (6.0L V8); For Use with Leaf Front Springs); 2004 Chevrolet Silverado 2500 (listed for Base / LS / LT / WT (6.0L V8); For Use with Leaf Front Springs); 2002-2006 Chevrolet Avalanche 2500 (For Use with Leaf Front Springs); 2007 Chevrolet Silverado 1500 HD Classic (For Use with Leaf Front Springs); 2001-2002, 2006 Chevrolet Silverado 1500 HD (For Use with Leaf Front Springs); 2003, 2005 Chevrolet Silverado 1500 HD (Not For Use with Quadrasteer; For Use with Leaf Front Springs); 2007 Chevrolet Silverado 2500 HD Classic (listed for LS / LT / WT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 2001 Chevrolet Silverado 2500 HD (listed for Base / LS / LT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 2002 Chevrolet Silverado 2500 HD (listed for Base / LS / LT (6.0L V8 / 6.6L V8 / V8); Not For Use with Quadrasteer; For Use with Leaf Front Springs); 2003 Chevrolet Silverado 2500 HD (listed for Base / LS / LT (6.0L V8 / 6.6L V8 / V8); WT (6.0L V8); Not For Use with Quadrasteer; For Use with Leaf Front Springs); 2004-2005 Chevrolet Silverado 2500 HD (listed for Base / LS / LT / WT (6.0L V8 / 6.6L V8 / V8); Not For Use with Quadrasteer; For Use with Leaf Front Springs); 2006 Chevrolet Silverado 2500 HD (listed for LS / LT / WT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 2007 Chevrolet Silverado 2500 HD (listed for Classic LS / Classic LT / Classic WT / LT / LTZ / WT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 2008-2010 Chevrolet Silverado 2500 HD (listed for LT / LTZ / WT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 2007 Chevrolet Silverado 3500 Classic (listed for LS / LT / WT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 2007-2010 Chevrolet Silverado 3500 HD (listed for LT / LTZ / WT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 2001-2003 Chevrolet Silverado 3500 (listed for Base / LS / LT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 2004 Chevrolet Silverado 3500 (listed for Base / LS / LT / WT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 2000 Chevrolet Suburban 2500 (listed for Base / LS / LT (6.0L V8)); 2001 Chevrolet Suburban 2500 (listed for Base / LS / LT (6.0L V8 / V8)); 2002-2005 Chevrolet Suburban 2500 (listed for LS / LT (6.0L V8 / V8); Not For Use with Quadrasteer Front); 2006 Chevrolet Suburban 2500 (listed for LS / LT (6.0L V8 / V8)); 2007 Chevrolet Suburban 2500 (listed for LS / LT / LTZ (6.0L V8)); 2008-2013 Chevrolet Suburban 2500 (listed for LS / LT (6.0L V8)); 2007 GMC Sierra 1500 HD Classic (listed for SLE / SLT (6.0L V8); For Use with Leaf Front Springs); 2001-2002, 2005-2006 GMC Sierra 1500 HD (listed for SLE / SLT (6.0L V8); For Use with Leaf Front Springs); 2003 GMC Sierra 1500 HD (listed for SLE / SLT (6.0L V8); Not For Use with Quadrasteer; For Use with Leaf Front Springs); 2001-2002, 2005-2006 GMC Sierra 1500hd (listed for SLE / SLT (6.0L V8); For Use with Leaf Front Springs); 2003 GMC Sierra 1500hd (listed for SLE / SLT (6.0L V8); Not For Use with Quadrasteer; For Use with Leaf Front Springs); 2007 GMC Sierra 2500 HD Classic (listed for SL / SLE / SLT / WT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 2001 GMC Sierra 2500 HD (listed for SL / SLE / SLT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 2002 GMC Sierra 2500 HD (listed for Base / SL / SLE / SLT (6.0L V8 / 6.6L V8 / V8); Not For Use with Quadrasteer; For Use with Leaf Front Springs); 2003-2005 GMC Sierra 2500 HD (listed for Base / SLE / SLT / WT (6.0L V8 / 6.6L V8 / V8); Not For Use with Quadrasteer; For Use with Leaf Front Springs); 2006 GMC Sierra 2500 HD (listed for SL / SLE / SLT / WT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 2007 GMC Sierra 2500 HD (listed for Classic SL / Classic SLE / Classic SLT / Classic WT / SLE / SLT / WT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 2008-2010 GMC Sierra 2500 HD (listed for SLE / SLT / WT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 1999-2000 GMC Sierra 2500 (listed for SL / SLE / SLT (5.3L V8 / 6.0L V8 / V8); For Use with Leaf Front Springs); 2001 GMC Sierra 2500 (listed for SL / SLE / SLT (6.0L V8); For Use with Leaf Front Springs); 2002 GMC Sierra 2500 (listed for Base / SL / SLE / SLT (6.0L V8); Not For Use with Quadrasteer; For Use with Leaf Front Springs); 2003 GMC Sierra 2500 (listed for Base / SLE / SLT / WT (6.0L V8); Not For Use with Quadrasteer; For Use with Leaf Front Springs); 2004 GMC Sierra 2500 (listed for Base / SLE / SLT / WT (6.0L V8); For Use with Leaf Front Springs); 2007 GMC Sierra 3500 Classic (listed for SL / SLE / SLT / WT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 2007-2010 GMC Sierra 3500 HD (listed for SLE / SLT / WT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 2001 GMC Sierra 3500 (listed for SL / SLE / SLT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 2002 GMC Sierra 3500 (listed for Base / SL / SLE / SLT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 2003 GMC Sierra 3500 (listed for Base / SLE / SLT (6.0L V8 / 6.6L V8 / V8); For Use with Leaf Front Springs); 2000, 2011-2013 GMC Yukon XL 2500 (listed for SLE / SLT (6.0L V8)); 2001, 2006 GMC Yukon XL 2500 (listed for SLE / SLT (6.0L V8 / V8); For Use with Leaf Front Springs); 2002-2005 GMC Yukon XL 2500 (listed for SLE / SLT (6.0L V8 / V8); Not For Use with Quadrasteer; For Use with Leaf Front Springs); 2007 GMC Yukon XL 2500 (listed for SLE / SLT (6.0L V8); Not For Use with Quadrasteer; For Use with Leaf Front Springs); 2008-2010 GMC Yukon XL 2500 (listed for SLE / SLT (6.0L V8); For Use with Leaf Front Springs); 2003-2007 Hummer H2 (listed for Base - 6.0L V8); 2008 Hummer H2 (listed for Base - 6.2L V8); 2009 Hummer H2 (listed for Base - 6.2L V8 / V8)