Rocker Panels & Cab Corners for 99-07 Chevy Silverado/GMC Sierra 4 Door Crew Cab

99-06 GMC Pickup Sierra 4 Door Crew Cab. 99-06 Chevrolet Pickup Silverado 4 Door Crew Cab. 07 GMC Pickup 2007 Classic 4 Door Crew Cab. 07 Chevrolet Pickup 2007 Classic 4 Door Crew Cab. Specification for Rocker Panel.