keyless entry and door problem

i bought a 2000 oldsmobile intrigue. keyless entry was not working and i changed its battery. then i followed the instructions i found in the internet
like holding the unlock switch and leaving the key in the ignition.
anyway now there is another problem
when i try to lock the doors from driver door
it is not locking all the doors.
it is just locking the driver door.
do you have any idea ?

Mine is set up that after the car is turned off and the door is open, the first push of the lock button will trigger a 5 second timer that will begin counting down once I close the door (you'll hear a "ding ding ding"). Nice if I have to get something out of the back seat as ift gives me time to close the door and open the back door. If I push the lock button twice, it locks all doors. I bought my Intrigue used and it was already set up like this. I believe you can program these buttons. Unfortunatetly it is in the owner's manual which i am assuing you do not have.