I'm thinking about getting a new truck. I have little knowledge about buying a used truck and not sure what to look for. I found one on craigslist that seems to be what I need. It is a 2001 GMC 4x2 Duramax with Allison transmission with about 110,000 miles. The seller said it was used mostly as a daily driver and did not plow any snow. He is the second owner and the truck came from Texas. My current truck is a 2004 gm4x2 with just a V6. The gas mileage is poor. I'm thinking the other truck will get at least 18mpg unloaded. What do you guys think?