do you have a new transmitter or did the batteries just die? If its new then you have to go to a dealership and have them do it with the scanner, if its just dead batteries try this
Press the LOCK and the UNLOCK buttons on the transmitter simultaneously for 7 seconds .
The receiver will acknowledge resynchronization in the following manner:
If all of the doors are locked, the receiver will unlock and lock all of the doors except the driver door.
If all of the doors are unlocked, the receiver will lock all of the doors.