[2005 GTO]

okay we all have that problem the remote does not work all the time. how can we fix it is there anything we caan do we it can get better resception cuz i dont want any after market remote or alarm.

 

[HotRodKush]

Might be the battery in the key

 

[Fox Mulder]

The range on the remote sucks, that's just the way they are. Presumably you have the two remotes that came with your car, compare them to see if one consistently works better than the other. If it does, and you can demonstrate it to a dealer, they should replace it for you under warranty.
The battery in the remote is supposed to last for many years and is not intended to be replaced, although it is theoretically possible to do so if you are willing to break the remote open.