97 Tahoe Door Hinge Pin Removal

[PCBeach]

I have a 97 Tahoe that I need to replace the hinge pin on the drivers side door. This is the pin with the roller on the bottom. The roller is bent so the door sags. I bought a new pin at the dealer after looking at local junk yards for 6 months. I can't figure out how to get the old pin out to install the new one. Nothing is threaded and there are no snap rings holding it in. Anyone done this before?

Thanks in advance.