These guys are awesome. Really thorough and transparent. I bought a 2013 3500 Duramax Silverado from a small used truck dealership that had a lot of problems and hadn't had the proper maintenance. These guys were very informative with what the issues were with the truck. They provide pictures and options. They do a thorough inspection for around $180, that is really worth it with these diesels. -- Also, I didn't get the wheel lock socket that went to my wheels when I bought the truck, and these guys wielded one together and let me borrow it. I would recommend this diesel shop.