FIX for detached hinge from glove box!:
My 2007 Monte Carlo glove box is OEM attached to the metal hinge plate with melted on posts tops and detached there.
I fixed it by: remove bucket from body by removing its 4 screws, also remove hinge from vehicle.
Working at a table, find 8 small short screws, which are very similar to the 4 screws for the bucket. That are just the right size to fit, screw into the rigid plastic posts, that are short (especially for the shorter posts.
Now, hold a screw head and use the flame from a cig lighter, to heat the tip of the screw just till it's too hot to hold. Now screw it into one of the 8 OEM melted top posts using a hand or electric screw driver-set on low slow speed and low torque setting.
Because if you don't heat the screw, it will crack the thin plastic post and then you'll have to try to super glue baking soda it back on... to try again.
If the screw gets too tight going in, then make sure the screw diameter isn't too thick. Unscrew and reheat it's tip again.