Access Cover ADARAC Truck Bed Rack System 70530 ADARAC(TM); Truck Bed Rack System CHEVROLET GMC SIERRA 1500 SIERRA 1500 CLASSIC SIERRA 1500 HD SIERRA 1500 HD CLASSIC SIERRA 2500 SIERRA 2500 HD SIERRA 2500 HD CLASSIC SILVERADO 1500 SILVERADO 1500 CLASSIC SILVERADO 1500 HD SILVERADO 2500 SILVERADO 2500 HD SILVERADO 2500 HD CLASSIC BASE CLASSIC HYBRID CLASSIC LS CLASSIC LT CLASSIC SL CLASSIC SLE CLASSIC SLT CLASSIC SS CLASSIC WT HT HYBRID LS LT LTZ SL SLE SLT SS WT Z71 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 4.3L (262) Vortec 4.3L L35 (262) Vortec 4.3L LU3 (262) Vortec 4.3L LU3 (4293cc) Vortec 4.8L GEN III LR4 Vortec (294) 4.8L GEN IV Flex L20 Vortec (294) 4.8L GEN IV LY2 Vortec (294) 5.3L GEN III Electric/Gas LM7 (325) 5.3L GEN III Flex L59 Vortec (325) 5.3L GEN III L33 Vortec (325) 5.3L GEN III LM7 Vortec (325) 5.3L GEN IV Flex LC9 Vortec (325) 5.3L GEN IV Flex LMG Vortec (325) 5.3L GEN IV LH6 Vortec (325) 5.3L GEN IV LY5 Vortec (325) 6.2L Flex L9H (376) 6.6L Duramax Turbo Diesel LB7 (403) 6.6L Duramax Turbo Diesel LBZ (403) 6.6L Duramax Turbo Diesel LGH (403) 6.6L Duramax Turbo Diesel LLY (403) 6.6L Duramax Turbo Diesel LML (403) 6.6L Duramax Turbo Diesel LMM (403) 6L GEN III Bi-Fuel LQ4 Vortec (364) 6L GEN III CNG LQ4 Vortec (364) 6L GEN III LQ4 Vortec (364) 6L GEN III LQ9 HO Vortec (364) 6L GEN IV CNG LC8 Vortec (364) 6L GEN IV Flex L96 Vortec (364) 6L GEN IV L76 Vortec (364) 6L GEN IV L96 Vortec (364) 6L GEN IV LY6 Vortec (364) 8.1L L18 Vortec (496) BI-FUEL CNG DIESEL ELECTRIC/GAS FLEX GAS Access Cover Access Cover ADARAC Truck Bed Rack System - 70530 70530 Truck Bed Rack