i have the passenger side drive axle off now all i need to do is unbolt the differential pumpkin. i can cant get the top bolt at all. the nut is inside the frame is just turning. the nut is an 18mm. there is a hole in the frame to get the wrench in there but its impossible to get it to stay on the bolt. i've had someone hold the wrench while i uses the socket to get it out. ive sprayed with pblaster and still nothing. anyone got any tips on how to get it out?

 

hot wrench! Seriously, if the nut is rounded off to the point where you cannot keep a wrench on it, then you need to cut the bolt to get things apart.

 

i dont think so i can get it around but i think i need an offset wrench.. i found a foot socket so im gonna try that