well mine started graunching not so long ago. those big mofo bolts would come loose all the time. i was about to loctite them up when the old mans mechanic said it will just come loose again because some case housing was loose or something. siera motors dont fit as the pinion thing is a few mls higher and would just wizzzz away and not touch the gear. if u get a new starter motor, test it with a load on it, like jam a peice of wood on it.
$195 for a new one or there abouts, thats what i did. starts cooley.