Can anybody give me some advice regarding the LLY diesel. When we were full timing we had a 2001 Duramax and had no problems with it but now I'm looking at a 2005 LLY with 189k on it. What should I know about it? What questions should I ask the seller? I really want to stick with GM products and this one is in our price range. Any help you folks can give me would be greatly appreciated. Take it easy on me. I'm old. Thanks for any help.

Ray