Hello I have a 2008 Pontiac Grand Prix 3.8 base model. I can start my car and drive about 5 miles, when I come to a stand still my car shuts off. If I put it in park and crank it back up it starts back up. If I wait 30 seconds to a minute it just spins and will not start. I can wait about 20 minutes and then it will start up. I need some help if anyone has had a similar problem like mine.