Thanks, I found it . Here they are , same as Buick.
1997 to 1999 Buick Lesabres
Before entering the programming mode, verify possession of all the
transmitters you will be using on the vehicle. Once you program the
transmitter, the memory erases. The other transmitters will not be
functional until you program the transmitters again. You may program
up to 4 transmitters.
Perform the following procedure when adding new transmitters or
replacing failed transmitters:
1 Turn the ignition switch OFF.
2 Use a fused jumper wire in order to jumper the DLC terminal 8
(BLK/WHT) to terminal 4 (BLK).
3 Close all of the doors.
4 Turn the ignition switch ON. The doors will cycle to lock.
5 Press and hold the LOCK button and the UNLOCK button on one
transmitter. After a 30 second delay the doors will lock and unlock.
Do not turn the ignition OFF or the first transmitter will become
6 In order to program extra transmitters, repeat step 5.
Disconnect the fused jumper wire from the DLC.