How do you deactivate the pass key ii security system on a 1998 Oldsmobile eighty eight ls?

To deactivate the Passkey II security system on a 1998 Oldsmobile Eighty Eight LS, you typically need to use the correct key that has the embedded transponder chip. If you have a spare key, try using it, as sometimes the original key can wear out. If the system is malfunctioning, you may need to reset it by disconnecting the battery for a few minutes or using a diagnostic tool. If these methods don't work, consulting a professional locksmith or mechanic familiar with GM security systems is recommended.