Keyless entry programming

I have a 99 Silverado 1500 LT and I bought a keyless entry remote for it off of eBay after I found out that it did have keyless entry from the dealer. Does anyone know how to program the remote? I tried to look online but was unable to find any help. Thanks.

Assuming that your truck has factory keyless entry and that the keyless entry transmitter that you purchased off of eBay is the CORRECT one. proceed as follows.

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.

FYI, This also works for the 2003 Silverado LS. I successfully programmed four remotes for my truck.

Does anyone know where the receiver is located? I'm trying to add one on. It ws not an installed option.

part number for 15042967 recv'r 15042969

Thanks in advance