Compatibility Information(ONLY FOR 2WD-RWD):1999-2005 for Chevy Silverado 1500 Base(2WD-RWD)2007 for Chevy Silverado 1500 Classic Hybrid(2WD-RWD)2007 for Chevy Silverado 1500 Classic LS(2WD-RWD)2007 for Chevy Silverado 1500 Classic LT(2WD-RWD)2007 for Chevy Silverado 1500 Classic SS(2WD-RWD)2007 for Chevy Silverado 1500 Classic WT(2WD-RWD)2004-2006 for Chevy Silverado 1500 Hybrid(2WD-RWD)1999-2007 for Chevy Silverado 1500 LS(2WD-RWD)1999-2007 for Chevy Silverado 1500 LT(2WD-RWD)2007 for Chevy Silverado 1500 LTZ(2WD-RWD)2003-2006 for Chevy Silverado 1500 SS(2WD-RWD)2002-2004 2006-2007 for Chevy Silverado 1500 WT(2WD-RWD)2002-2005 for GMC Sierra 1500 Base(2WD-RWD)2007 for GMC Sierra 1500 Classic Hybrid(2WD-RWD)2007 for GMC Sierra 1500 Classic SL(2WD-RWD)2007 for GMC Sierra 1500 Classic SLE(2WD-RWD)2007 for GMC Sierra 1500 Classic SLT(2WD-RWD)2007 for GMC Sierra 1500 Classic WT(2WD-RWD)2005-2006 for GMC Sierra 1500 Hybrid(2WD-RWD)1999-2003 2006 for GMC Sierra 1500 SL(2WD-RWD)1999-2007 for GMC Sierra 1500 SLE(2WD-RWD)1999-2007 for GMC Sierra 1500 SLT(2WD-RWD)2002-2007 for GMC Sierra 1500 WT(2WD-RWD)More Specifications About ECCPP's Shock Absorber:OEM Reference: 344380 37149 344365 37150 Material: Premium SteelColor: BlackCondition: NewPosition: Front,Rear,left,Right Kit Includes:4pcs Front Rear High-Quality New Shocks ECCPP shock absorber deserves your more attention:ECCPP'mission is to provide each customer with the best auto parts shopping experienceNo refurbished parts! We do not sell any re-manufactured or refurbished parts, factory direct