Started to leave stoplight, heard metallic grinding noise, put back in park, tried to put in reverse to get out of intersection, heard same grinding-cracking noise, then the tranny wouldn't engage in any gear. I have 88k on car, it's like the tranny is in neutral when you try to engage it in any gear, absolutely nothing! Anyhting else it could be beside the tranny being totally gone- any ideas? Approx casts if I need new tranny? Thanks