OER Parts offers a wide selection of Body Panels for your 2003 GMC Sonoma. OER Parts offers 2003 GMC Sonoma Truck Cab Components, 2003 GMC Sonoma Stepside Cab - Complete, 2003 GMC Sonoma Cab Panels - Partial, 2003 GMC Sonoma Rear Outer Cab Panel, 2003 GMC Sonoma Cab Corners, 2003 GMC Sonoma Patch Panels, 2003 GMC Sonoma Cab Floor Panel, 2003 GMC Sonoma Rear Inner Window Panel, and 2003 GMC Sonoma Windshield Pillar.