There's only one full-size pickup that's engineered and built to Professional Grade specifications : GMC Sierra. Year in and year out, they perform capably and reliably in the toughest tests you put them through. That's due to the core strength of its three-piece modular frame and the durable power of its VortecTM engine lineup. It enables you to match your power to your specific demands – all the way up to a 403 hp 6.2L V8. Along the way, Sierra also sets the pace in fuel efficiency, with VortecTM V8 fuel consumption ratings that easily beat Ford F-150's V8. And you can build your Sierra your way, with a wide range of configurations, body styles, box lengths and trim levels. Count on it. The 2013 GMC Sierra 1500.