New here from NH looking for advice

Hey im looking at another chevy. This time its a 95 k1500 diesel z71. 307k on the clock. Its only $2500 so i just want to know if there is anything in particular to look out for when looking at it, What anyones opinion is on these trucks, and is it a good investment. Im still in school and dont have a ton of extra cash to dump in it if something goes wrong. Any help would be apreciated thanks
Dylan