1982blazer
1/2 ton status
My passenger side front body mount is loose, and i am having trouble tightening it. At first just stuck a wrench on it and tried to tighten it up and it wouldnt even turn. So my question is do i need to cut a whole in floor to get the other end of the bolt, btw i did spray it with pb blaster and it still won't budge. Thanks for any info and sorry if this has been covered before.

