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, possibly with urea injection for NOx emissions reduction, continue, helping Sierras so-equipped to meet the tough Tier 2 Bin 5 emissions regulations. No word on how long a tank of pee will last, though. We're not looking forward to finding jugs of that on the wall at the discount parts store. [Pickuptrucks.com]


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