04 Pontiac grand prix stalls while driving

hello everyone first time here.

i have a 2004 pontiac grand prix n/a 180k miles.It stalls after driving for about 15 mins it dies and well not restart until its cooled down for a hour.I have no check engine light,the only warning i have is steering effort but i dont think that is related. I have replaced the fuel pump, filter and the crankshaft position sensor. At this point i am lost and dont know here to go from here.