[gtocato]

I have a 1997 6.5 Turbo 2 door Tahoe with roughly 311,000 miles on it. The truck still gets around 18.5 to 19.5 miles per gallon even with 2006 LTZ Surburban 20 x 8 tires and wheels.

My question, is there any partciular maintenance that should be performed on a great running truck with this kind of miles? What worries me most I suppose is thinks like the timing chain, cam shaft lobes and the like. Is there anything I need to keep an eye on to get a half a million miles out of this truck. The 2 door is a pleasure to drive as it rides nice a smooth and will turn on a dime. It has never given me any trouble and I simply want to take the best care of it. Thanks in advance.