I also just picked these up from my dealership parts' dept.
They are the rear side markers which I have already sent to VetteFX to get an LED conversion. I am also waiting on GSCreations to be finished with their clear front markers and they will be sending them to me as the very first customer.
You can check out
HERE for the vettefx rear led marker pics. I am not getting the fronts done by them as I am going with GSC clear fronts.