Remember: there's fuel tank under there somewhere.

Good luck, I'm o for 2 on them.

This sounds like the best idea to me.

When you do get it out,apply a bit of axle grease to it when you put it back.

Lots of good ideas. I’ve recently started using a product called Free All…I like it better than PB Blaster. Just curious….I’ve never had a hitch rust in like that. Is this a northern issue from salt on the roads??

Just looked up this video , different method , but makes sense.
Short 2:26 , crummy background music , and I would not use a Pyrex glass pan , but it looks like it works with much less effort.

If trying to power pull it by attaching to a tree, use a tow strap with some stretch. It will give a compound pull. Doing this pull with a chain or cable is a hard on the vehicle and dangerous.

100ft of coiled up chain to a big oak,then floor it.
Make sure you film it.

Air hammers/air chisel can be better than a sledge hammer some times.

Boco - cruel, but I want to see the video.
Next he can replace the windshield.

B.F.H. and some heat.

What I was thinking, gives a little spring to it, sometimes equals a 2 for 1 pull! Although, I would suggest you find another "reciever" tube and reweld it in, or scarf (relief cut(can be done with grinder, or torch)) down each side and heat, beat, and repeat; then reweld it together! All depends on your confidence, ability, and availability of tools required. Good luck!

Some guys will surely disagree with me, but this WILL work:
Forget lube/spray, you're past that point. Obviously, be careful with the gas tank, but get it HOT, glowing all around,if you can't yank/drive it out,re-heat it and have the garden hose ready. Quench that sucker! Steam will penetrate places you can't imagine. BTW,I have lots of experience with rusty junk, LOL.

I got home from fishing one day pulling a boat trailer. I unhooked trailer, then some days later I needed the hitch ball for my other truck. I went to pull the pin, but it was gone!
Some jack wad stole it at the boat ramp and left me bad. they could have got somebody killed.
I couldn't figure out why I didn't lose the trailer on the way up the ramp or on the way home.
Found out quick enough when I couldn't pull it out. I ended up applying propane torch heat to the receiver to make the metal expand and make the hole bigger. The hitch came out then. It doesn't take all that much heat, and yes, the gas tank was right there.

Bad idea. I know someone that tried that and set their air bags off costly mistake

Long chain it to an immovable object then floor the gas.

Video it and let us know how it goes.

I had the same issue on a f250, tried most of what was posted here, torch was the final solution. Go straight to the heat.

I tried the "log chain to a tree " trick. I ended up buying a new rear window.

Get 2-3 of your buddies together, buy a couple or three cases of beer. Start a bonfire and begin drinking. There will be solutions thought up,,, more fun than these lame suggestions you're getting here.

BEST.ADVICE.YET!!!!