Ok so my dad has an 01 gmc HD 6.0 gas motor. He's put 100k miles on it. I'm wondering what are comon failures that start to appear in chevy's/gmc's past 100k miles? Looking to do preventative maintence. (besides the obvious...changing oil, ect) This is our work truck, when it gets retired it becomes my fullsized play rig :D so I want to keep it in running order. Thanks~

I would change the plugs and rad. fluid, as well as PCV valve. I would also take the TB off and clean it as well. Also change the fuel filter at least every 5000 miles. Gas is dirty!

Tb would be? thanks~

ummmm.............throttle body

doh