Heat it with a torch....even a propane torch will work if you hold the flame there long enough.

Metal expand when you heat it (obvioulsy). So heat the nut and not the bolt....works like a charm every time.

Be carefull not to light anything on fire though.

'93 4Runner - 3.4L 5VZ-FE, 2" body lift, on-board-air system, custom gauge cluster, rear e-locker, electric fan, custom built front and rear bumpers, sliders, 4,88 gears...all on 33x12.5's.