I am sorry, I copy and pasted the wrong script. Here is the correct one for 1999.That looks like you're programming a new key vs just the lock/unlock function of the key fob.
Program Remote Key: FSM sequence E (1998-2002)
Begin with the key out of the ignition and drivers door open and unlocked (all other doors closed).
- Insert remote key into the ignition (Do NOT Turn) and then pull remote key out.
Within 40 seconds ;
- Use the power lock switch on the drivers door, perform 5 (five) lock/unlock cycles starting with lock.
- Close, then open the drivers door.
Within 40 seconds;
- Using the power lock switch on the drivers door, perform 5 (five) lock/unlock cycles starting with lock.
- Insert the key in the ignition cylinder. Turn the ignition to ON (Do NOT Start) then back to OFF
- Remove the key from the ignition.
Within 3 seconds the power door locks should cycle automatically indicating successful entry into programming mode.
Return to step 1 if the locks do not cycle at this point.
To accept a remote transmitter perform these steps within 40 seconds;
- On the remote key, press the Lock and Unlock buttons simultaneously for 1 second.
- Immediately after letting go of the Lock and Unlock buttons, press the Lock button and hold for 2 seconds.
- Within 3 seconds of completing the steps above the power door locks should lock then unlock automatically. If the door locks do not cycle, your remote has not been accepted. Repeat steps 1 and 2 of remote acceptance procedure above.