I have a 2004 Grand Prix GTP and it started missing real bad but only when my car is idling. I had the spark plugs and wires changed but it still doing it. Can anyone help me with this please.
Also i had my transmission rebuilt and since then my key less entry doesn't work. You can hear it clicking when you press the button but it doesn't do anything.. Please let me know if you have any idea of whats going on..

Thanks