For 2001-2004 GMC Sierra 2500 Nerf Bars 91437TC 2002 2003 6.0L V8 | eBay
GMC Sierra C3
APS W2W Running Boards 6 inches Compatible with Chevy Silverado GMC Sierra 1500 2500 1999-2013 Double Cab 5.5ft Bed & 2500HD 3500 2001-2014 (Nerf Bars Side Steps Side Bars) - Walmart.com
01-18 Chevy Silverado/GMC Sierra 2500/3500 Crew Cab (w/ DEF Tank) 00-13 Chevy Silverado/GMC Sierra 1500 Crew Cab 7 Inch Stainless Steel Running Boards RAP1301-0162
Running Board 6in Aluminum Black Fit Chevy Silverado GMC Sierra Crew Cab 01-13 | eBay
2001-2007 Chevy Silverado/ GMC Sierra Classic 1500/1500HD/2500/2500HD/3500 Crew Cab Black Finish 6 Inch iRunning Board Door to Door Side Bar Side Step Running Board - Walmart.com
TAC Stainless Steel 3" Side Steps For 2001-2018 Chevy Silverado/GMC Si – TACUSA