ls1z01

I'm installing a new head unit and after I pull the neg on the battery to install the head unit. When I got everything to install I put the neg back and now I can get my intelligent key to do anything. It won't lock / unlock. The red/green key light does not light up. I can manually lock or unlock with the switch on the door but there's no way I can start the car. I used the key inside the fob to try to start the car and it wont work either. I cant get it to accessory either. It feels like it's stuck (similar to steering wheel lock).... I need help quick!

Thanks for any feedback.