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 126.3 KB Views: 21 4321.jpg 172.5 KB Views: 18 Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Link