Rock Slider Powder coated textured black;3/16 steel;Made in the USA GMC SIERRA 1500 SIERRA 2500 HD SIERRA 3500 BASE C3 DENALI HT HYBRID SL SLE SLT WT 1999 2000 2001 2002 2003 2004 2005 2006 4.3L (262) Vortec 4.3L L35 (262) Vortec 4.3L LU3 (262) Vortec 4.8L GEN III LR4 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) 6.6L Duramax Turbo Diesel LB7 (403) 6.6L Duramax Turbo Diesel LBZ (403) 6.6L Duramax Turbo Diesel LLY (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) 8.1L L18 Vortec (496) BI-FUEL CNG DIESEL ELECTRIC/GAS FLEX GAS Rock Slide Engineering Rock-Slide Engineering Rock-Slider (Black) - BD-SS-101-GMC BD-SS-101-GMC Rock Sliders and Guards