Well I am not sure what diesel the last guy is talking about,but G.M. has a good diesel as long as it has been taken care of. There are some G.M. mec.
that love that engine and know it like the back of there hand!!! That new duramax is in my brother's truck "05" and WHAT A ENGINE!!! quit, smoooooth tranny shifting and PULL!!!!!!!!! fifth wheel 18 foot,long 900 bobcat, bucket,forktine, post hole auger, cement equipment and that thing can go up hills 70 mph. and gain speed!!!!!!!!! I had a 6.5 put 100,000 on it and never touched the engine