Ok I am home, disregard my previous post as I was not correct.
so open up ICUE, click on the K55 image at the devices area.
You will automatically be on a default setting
On the left theres a thing called Action, click on it, you want to hit the + sign, which gives you a new macro
on the new macro that was created, click any key you desire on the set of G keys.
look where it says Macro, you want to change it, change it to keystoke. Add any combo of keys, so if your keybind is Shift+2, Shift+C or whatever, do so.
You now have one of the G keys binded to whatever you set in WoW. So save the default profile and thats it.