Yep. Gotta have a fob with all the buttons if you own a Panel.

 

^ And ordered..

 

Quick update on the fobs.. ordered a Dorman, #13736 from eBay: https://www.ebay.com/itm/Dorman-1373...53.m2749.l2649 and a gen-u-wine Chevy 6 button remote: https://www.ebay.com/itm/ACDelco-151...53.m2749.l2649 even though my 2010 LS isn't outfitted with remote start. I figured one of those two fobs should work, even if I have to get the 6 button programmed. So.. plug in the 'transmitter/programmer' for the Dorman fob, follow the directions and *ping*.. worked perfect! One down.. so on a whim I try the GM fob, same program sequence and *ping* - it worked, even the two back door releases. So.. for future reference, yes, the Dorman can be used to program other fobs. Granted, it was a "genuine" GM fob, I don't know if it would work with the cheap Chinese ripoff fobs.