Hi, I have been lurking for awhile hoping to get an answer to my question's. I am going to purchase a 2002 2003 Suburban 1500 in near future. Looking for 5.3 flex fuel with around 100,000 miles because they are in my price range. Would prefer an LT. but LS with right equip will due. Are there any problems I need to be aware of in these years ? What should be my main focus when I look at ones I am interested in? Thanks for any help.