Hey Guys and Gals. I got a 99 2dr Tahoe back in april and it has a 6.5 turbo diesel. Its also 4x4 and is loaded to the gills with every option imaginable. It also only had 40k miles on it. So far its been great and I really love it. But I cant find much in the way of performance parts on the net for it. Other than changing the CPU. I was also wondering how often and what kind of service it needs other than regular oil changes. Any advice and help is greatly appreciated.