Fuse question... Clstr?? (Follow to Fuse Problem)

Does anyone know what clstr means on the fuse box for an 89 Trans Am? My hatch motor doesn't work even though I replaced it. It doesn't seem to be getting electricity. I think its becasue the fuse in the "clstr" position won't stay and i think this slot is for the hatch motor? The slot seems to be missing the gold metal that holds the fuse there? Any ideas or suggesstions?