How do you disable alarm to 1999 olds alero?

To disable the alarm on a 1999 Oldsmobile Alero, you can typically use the key fob to unlock the doors, which should deactivate the alarm. If you don’t have the fob, you can manually unlock the driver's side door with the key. If the alarm persists, you may need to disconnect the car battery for a few minutes or locate the alarm fuse and remove it. Always refer to the owner's manual for specific instructions related to your vehicle.