2010 GMC Sierra HD Spied Sporting A Minor Refresh

The guys at Pickuptrucks.com have snagged some shots of a 2010 GMC Sierra HD pickup in dually chassis-cab configuration. The most obvious change is in the grille area, where a honeycomb three-bar motif dominates, but overall the refresh is pretty minor. Rumors of a more-powerful Duramax available under the hood,… » 10/13/08 2:40pm 10/13/08 2:40pm