please i need help this is not a third gen but it is a GM. my friend as a 96 grand prix V6 supercharged is car will not start when it is hot. I start if he stops for gas or a very short time but if he leaves it for about 10 min and try to start it the car will turn but will not start the car. I check is fuel pressure it is good. I put a new fuel filter in. I put new plugs in. is fuel pump is good. I am stumped need HELP

 

I must've missed the news the day GM sold off the Pontiac division....

Anyway, the symptom sounds typical of a leaking injector. A standing fuel pressure test at shutdown might help diagnose that. If thte engine starts more easily by opening the throttle slightly while cranking, that's another indication of a leaker.