Keyless Remote Programming

I am trying to program a dealer installed keyless remote for my 1999 GMC Savana Van. The P/N number is 12495653 and the FCC number is EZSOEMTX. Could someone provide me with the programming so that I can use this newly purchased remote?

Transmitter Programming:

1)With the driver door closed, hold down the power unlock button on the door panel.

2)Turn the ignition switch to the ON position

3)Turn the ignition switch to the OFF position

4)Turn the ignition switch to the ON position

5)Turn the ignition switch to the OFF position

6)Release the power unlock button on the door panel.
The remote control door lock reciever will respond in the following manner in order to indicate that the receiver is in the programming mode:

6.1)Locking the doors

6.2)Unlocking the doors

IMPORTANT:
All extra transmitters must be programmed at this time. When a new transmitter is programmed it will deactivate the old transmitters.

7)Hold down the lock and unlock buttons on the transmitter until the remote control door lock reciever will respond in the following manner:

7.1)Locking the doors

7.2)Unlocking the doors

8)Repeat step 7 for each additional transmitter

9) Turn the ignition switch to the ON position in order to exit the transmitter programming mode.