im stumped.
 

ok so i bought a 04 lly low miles good condition, and it has some toys like an edge juice with attitude programer, AFE cold air intake, and a 4'' exhaust down pipe back. dont plan on doig much more to my rig for some time but i have had some problems. when starting it sounds like the starter is going on it. so i replaced the starter and the grinding sound when starting continues. re dropper the starter to check the flex plate and the teeth seem fine no chips or other damage.

not sure what it could be??? i had a buddy who is a diesel tech(rookie) and he is not sure what it could be either.:argh:

Did you get an after-market starter (generic auto parts store) or a factory rebuilt unit. I've seen this happen to quite a few trucks. The Isuzu remand fixed it every time. I would get it fixed soon. It can destroy your FP if you keep using it.

i installed a rebuilt starter and first try right out of the box it makes the grinding?:dang:
but like before not consistant. and man the veiwing point for the flex plate is tiny!!

went out bought brand new heavy duty starter and bam works like a dream ty true performance diesel.

might cost a little extra but saves the run back to the store. glad to hear ya got this fixed:tu:

My pleasure. Glad to help.

Duramax starter grinding
 

What heavy duty starter did u buy and have you had any issues since u put it in