Programming Remotes 2000-05

The information in the sticky that you need a scan tool is incorrect. I have used this method on different centurys many times and it always worked.
There's a manual method of programming keyless entry transmitters also. Make sure that you have all the transmitters you want to be able to use handy because the system will have to "learn" each one, even if they already worked before. If you have the memory seat/radio/mirror option you'll need to program the remote for 'driver 1' first, then 'driver 2', then up to 2 others. Here's how to do it:
1. Close the vehicle doors.
2. Turn OFF the ignition.
3. Remove the ignition key from the ignition lock cylinder.
4. Press and hold the driver side door lock switch to the unlock position.
5. Insert the ignition key into the ignition lock cylinder and remove the key. (Do not turn the ignition key in the lock cylinder.)
6. Insert the ignition key into the ignition lock cylinder and remove the key. (Do not turn the ignition key in the lock cylinder.)
7. Insert the ignition key into the ignition lock cylinder. (Do not turn the ignition key in the lock cylinder.) Leave the ignition key in the ignition lock cylinder.
8. Release the door lock switch. The body control module (BCM) will sound three beeps in order to verify the Program Mode has been activated.
9. Press the lock and unlock buttons on the keyless entry transmitter simultaneously for approximately 5 seconds . The BCM will sound two beeps in order to verify that the transmitter has been successfully programmed.
10. Perform the previous step to program up to four transmitters.
11. Remove the ignition key in order to exit the Program Mode.
12. Verify the proper operation of each transmitter.

Thanks, would you mind if I place your information in the stickied thread?

I just wanted to say that the instructions you gave were such a help I had bought a remote off of an auction site and they gave me different instructions..BUT YOURS WERE THE RIGHT ONES!!!!!!!!
Thanks so much
Bobbiesue Carman
2001 Buick Century Custom

These are the instructions that I used as well for my 2002 and they worked.

The service manual is incorrect in that it says a Scan Tool is required. HOWEVER the Owners Manual shows the method you discribed. The serivice manual says you MUST take it to a dealer. The service manual also says that ONLY 2 fobs can be programmed while the Owners Manual says the correct 4 fobs. The Owners Manual also gives the steps you have indicated without using a Scan Tool.

I wish the Sticky would fix this.

I wish the Sticky would fix this.

Please be patient. A Moderator (TMan) has already responded and I'm quite sure he is looking into it.

Regards,

Bob
Buick Forum Moderator

Yes put it into the sticky.

I edited the sticky to reflect a second option 2000 to 2005 model years.

I have a 2002 Century. Does this method work only on new remotes or can I reprogram the remote from my 2001 Century to work in the 2002 ? Thanks

works perfect, confirmed on a 2001 Century Custom

Yes, used remotes work, that's what I just programmed.
The remote itself only transmits, therefore it can be programmed over and over to different vehicles if necessary.

jwalker1970,

Thanks for the feedback. Sorry but we prefer that old threads (over 3 months old) are not resurrected. Therefore, this thread has been closed but can still be viewed.