If 1999 Cadillac moon roof won't close?

If your 1999 Cadillac moon roof won't close, first check the fuse related to the moon roof system, as a blown fuse could be the cause. Next, inspect the moon roof for any obstructions or debris that might be preventing it from closing. If those steps don’t resolve the issue, the problem may be with the motor or the switch, and you may need to consult a professional mechanic for further diagnosis and repair.