Programming new security/alarm remotes

[SLambson]

We recently bought a used 99 Silverado and one of the security/alarm remotes came up missing during the transaction.  The dealership wants ? for a new remote and programing.  I can pick up the remotes used off E-bay for around ? but I'm still forced to take the remote to the dealership and have them program it for a 'small' fee.  They are trying to find a used remote for us as they were the ones that lost it in the first place but seem less then sympathetic.  

Does anyone know the sequence to get the alarm to accept a new remote?  The manual infers that the alarm will accept up to 4 remotes but does not give any details into programing.  TIA.

[Smitty00Z71]

I wouldn't mind knowing the answer also, I only have one remote and need another

[racer]

here you go

Transmitter Programming

  1.Start with the ignition OFF, hold down the power unlock button on the door panel. Turn ignition key ON, OFF, ON,

    OFF. Release power unlock button on the door panel. The locks will cycle once.

  2.Hold down the keyless entry transmitter LOCK and UNLOCK buttons for 15 seconds. The locks will again cycle once.

  3.Repeat step #2 for each additional keyless entry transmitter.

  4.Turn the ignition on to exit the keyless entry transmitter programming mode. Programming is now complete.