03 Envoy SLT memory seat

I have a 03 Envoy XL with memory seats, we just got the vehicle and when we got it home and tried to program the memory seats, only the driver 1 button will program, driver 2 will not program, it will work with the setting that was already in there but I can not change it. Any suggestions? And does anyone know the part number for a replacement switch if this is bad? The key fob will work for driver 2 and DIC will show driver 2 when you start the vehicle.

Well for some reason i was able to get the seat to program in the driver 2 position, but it will not do it again. any suggestions? loose wire somewhere?

They were problematic from day one along with the memory mirrors, no loose wire, there are bcm updates thru a GMC dealer that usually correct that assuming it works manually.