Question: what are the best used diesel trucks to buy?
Answer: The 2010 GMC Sierra HD. Although in many ways identical to the Chevy Silverado, the GMC Sierra series is typically a bit more “upscale” for lack of a better word. ... 
The 2014 Ram 1500. ... 
The 2012 Chevy Silverado 2500HD. ... 
The 2012 Ford F-250 Super Duty. ... 
The 2007 GMC Sierra 3500HD.