Sorry to take so long to get back to you. What I found out is that it is an easy task or it can be an extremely hard task.
Just to be sure. It is the outside storage doors, right??
now I have a 2005 30 ly so yours may be different.
Easy task first. The door's are attached with rivits to a piano type hinge that runs along the top of the storage bin. If you just want to remove and reattach the door to the existing hinge, just drill out the rivits and install new rivits in the new door.
Hard task next. But if your hinge needs replacing that's another story. From looking at mine (dull day with a bit of rain) the hinge seems to go under the top lip of the storage bin, underneath some calking stuff, to I don't know where. That seem to be at least 2 inches. I couldn't see a break in the metal that would indicate that there are 2 pieces here. Nor could I feel any rivits. I didn't want to disturb the calking stuff because it looked original and could be metal or something else. The hinge dould be steel rather than aluminum and could therefore be spot welded to the bin frame.
That's about it from me. let's hope someone else has more knowledge than I.