know how to program a stock keyfob??

 

Here is what the oem manual (99 Silverado) says;

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 key FOB lock and unlock buttons for 15 seconds. The lock will again cycle once.

3) Repeat step #2 for each additional key FOB.

4) Turn the ignition on to exit the key FOB programming mode. Programming is now complete.

 

thanks!