youi'll have to have a dealer do it then if nothing wrong with it. has battery been replaced?

This it for a2004 GTO you can not open it

i kind of thought that the key would still open the door if the remote didnt' but i could be wrong. if the key won't open it you'll have to find someone with a slipm jim that knows how to do this as it will set the airbags off but it you cannot program it an ddon't have another remote that works then the dealer wil lhave to do that with a tech 2