HELP! Need help on programing Please

Hello. I have a 1999 silverado(new body style) 1500 truck x- cab
broke my old keyless entry bought new one on e-bay it has power doorlocks ,alarm and panic alarm can someone tell me how to program
all of the functions on my new remote. Please

Thanks Tony

The remotes are vehicle specific, does the part number on your new remote match the part number on your old one? If not, it wont program.

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.
Hold down the keyless entry transmitter LOCK and UNLOCK buttons for 15 seconds. The locks will again cycle once.
Repeat step #2 for each additional keyless entry transmitter.
Turn the ignition on to exit the keyless entry transmitter programming mode. Programming is now complete.