Ok..Totally new to diesels. I am however a backyard mechanic trained by my grandfather..a full time mechanic.
Heres the deal, I bought a 2001 Chevy with 183k miles..2500 HD allison automatic all maintenance records are there,,the owner even changed teh cabin air filter..and all fuel/transmission transfer case fluids and filters as manual required.

Questions are..what should i look for other than obvious stuff..leaks bent parts etc. and any good/bad stuff about this year?


thanks,
keith