I bought my 2008 LS panel, used, with only 1 key.

I bought two keyfobs with door buttons (part number 15114376).
I had the locksmith program them for the car.
All the other keyfob buttons work, but the two door buttons don't do anything.
Is there an option I'm missing? Do I need to ground some wire?
The doors work great with the dash buttons (I just replaced both rear door latches).

Thanks!

 

The rear doors need an extra step in the programming. The guy probably doesn't know about it, neither do I.

 

Thank you.
I'll research this further and post what I find.