General Information Year 2003 Make GMC Model Sierra 2500 HD, Duramax / Allison Packages SLE 4X4 LB 2003 GMC Sierra 2500 HD, Duramax / Allison Gallery 4320.jpg 98.2 KB Views: 14 4321.jpg 135.5 KB Views: 10 Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Link