The '90 camaro has three bolts that hold the door hinge to the body and I believe three that hold the hinge to the door. The easiest way I've found is to score the position of the original hinge location and remove the bolts with the appropriate wrench with the door open. Be sure to have the door supported because it will try to sag. Once the new hinge is in place, align it to the original hinges location and tighten your bolts down.
jack the door up on the end of it and unbolt the hinge and replace with the new one.
by using only the information given, your answer is to replace the lower door hinge pin and bushing.
How do you change the door hinge pins and bushings on a 2002 GMC 1500 pickup truck?"
door hinges attached to door and hinge post
My advice based on experience is to replace the entire hinge assembly.
go to youtube.com
To replace the door hinge pins on a 1997 Jimmy you will need to open the door up. Place two jack stands on the front and back of the door's length at the bottom portion of the door for support. Remove the damaged hinge pin with the proper socket. Place the new hinge pin in place and secure it.
Open the door, support it with a jack, remove the hinge spring. To remove the pin, you should have to remove a retaining clip at the head of the pin and then tap it out with a hammer. The upper hinge has two bolt secured bushings. Unthread the bolts, tap them out with a hammer and pull out the bushings. Make sure the door is held secure, as it will be free floating at this point.
door hinge pin
Bro, DOOR-HINGE. Door-hinge rhymes with Orange.
A door which hangs on hinges. The hinge is what allows a door to open and close and is made of metal, attached to the door by bolts or screws.
You do not remove the pin. Remove the bolts holding the entire hinge from the door. You need a helper to do this, and will need help aligning the new door. Mark the location of the old hinge with a marker around the outer edge of the hinge and replace it as close as possible in the exact same location.