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As told by member JoeO, you have a loose lower dash panel. When you pulled on the hood release, the panel separated. It seems the prior owner(s) had someone take apart the dash (for whatever reason) and this person did not put all the screws back in that he or she took out. To fix the current issue, acquire a few screws that will fit in these locations (easily seen, in the lower dash locations where a screw looks like it goes), and tighten them up to their original location.
The larger picture, is WHY was the lower dash panel removed in the first place and are there more loose things inside? Good luck!
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