New to this forum, I'm thinking about buying a duramax, actually I'm going to. There's a 2007 chevy duramax with 236,000 miles for sale. I'm not real sure of certain things I need to look for or ask about this truck. The trucks body and undercarriage look awesome, very clean. Older man so I assume one owner. But what are things to look for, if not this 07' why years are the best. Any info would be great, I'll update my progress with my future dream purchase.