I used to have a Pontiac Transport and just purchase a 2005 Montana Mountain Edition. My old transport had a feature when you locked your doors with the keyless it would honk the horn and/or flash the marker lights. This feature could be turned on or off. Is there any way that the 2005's will do the same. I like to have the horn honk or at least for the lights to flash so that I know that the doors locked. Any help would be appreciated.