GMC HD Trucks - Big boost in carry and pull capacity

GMC Sierra HD Leads the Segment in Towing and Payload Ratings - delivers 21,700 pounds towing and 6,635 pounds payloadGMC announced today that the new 2011 GMC Sierra heavy-duty pickups have increased towing and payload ratings through ongoing development and testing, making them the most capable and powerful heavy-duty pickups in the segment. The ratings have been increased to 21,700 pounds of