Heavy Duty Step for Chevrolet
Year Application Board Part #     Manual
99-11 Silverado/ Sierra Regular Cab 9954     Download
01-11 Heavy Duty Regular Cab 9954     Download
99-11 Silverado/ Sierra Ext. Cab, 01-10 HD Ext 9980     Download
01-11 HD Crew Cab, 04-10 1500 Crew Cab 9986     Download
07-11 Silverado Crew Cab "Z71" 9986     Download
*Note - 2011 Chevrolet diesel will use 99-528 bracket kit.