I need some guidance. My 2006 Nissan Quest is from up North, underside is full of rusted parts. I'm doing the whole front suspension rebuild. In trying to get the pinch bolt out from the knuckle to A frame, the bolt is seized and an impact will not back it off. I tried to heat up that whole area, impact won't rotate it and using a 3 LBS hammer isn't doing the job in the axial direction.
Just a thought: Is it possible that this pinch bolt is serrated? I'd see if I could get my eyes on a replacement part to double check. Have you tried to gently tap the bolt out from the threaded end? [I usually thread the nut on to protect the thread in case of a missed stroke.]
P.S. If your current luck keeps going, you might end up with all new parts on your car!