GM reports $2.6 billion in Q1 profits.
HBO Documentaries' "The Last Truck: Closing of a GM Plant" – click above to watch video
Chevrolet Silverado – Click above for high-res image gallery
As General Motors seeks to streamline its production, the auto giant's medium-duty truck business is back on the block. This past summer a deal with Navistar fell through, leaving GM holding its hat, but a new deal could see the line transfer to Isuzu.