1998 suburban keyless entry programming

I need some help. I have purchased another key fob for my 98 sub and need to program it. I have attempted the paperclip on pins 4 and 8 on the data connector (nothing happened) and also tried holding down the button and turn the key on, off, on, off. No success there either. Could someone please help?

Did you ever figure it out???
I've got a 98 Suburban & picked up an OEM replacement keyless remote and need to program it.

Thanks

yes, I did. I used a paperclip on the 4 & 8 pins on the plug under the drivers side dash. After the locks cycle, I held down both of the buttons on the old remote for about ten (long) seconds and the locks cycled. Then I did the same for the new remote. DONE!!!!

Great.
I found the same instructions later in the day under the Tahoe section.
I programmed two remotes in about a minute.
Piece of cake.
Sure glad I didn't pay any money for the instructions!!!!!!!!!!!