Nerf Bars designed to fit your GMC Sonoma:
Lund StepRails Elliptical Aluminum Side Steps with Mounting Bracket- $337.95
Westin Signature Series Nerf Bars- $217.95
Model years for Sonoma nerf bars include 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000 and earlier.