key less entry and remote start problem

Hey guys I’m hoping someone can help me out. I have a 2006 Pontiac g6 that came with a factory car starter and remote keyless entry. Here is the problem, it stopped working. I replaced the battery in the remote and the fuse for the car. And when I hit any of the buttons, doors, trunk, car starter, nothing happens. Hope someone can help! Thanks in advance

re-program the remotes …

factory remote ?? … take it to the dealer