My car starts and drives for 10 to 15 mins and either at a stop or doin 30mph it stalls and will not start for 10 to 15 minutes why is it doin this

What is your question?

My 2007 Pontiac Grand Prix is stalling out after 10 minutes of driving and will not start up immediately sometimes I have to let it sit for 10 to 15 minutes and then it starts up and will run for another 10 minutes or so before stalling out again sometimes it surges feels like it's running out of gas and sometimes it just will die at 30 miles an hour I have replaced fuel pump,mass air flow sensor,cleaned EGR and just replaced spark plugs and wires I think it's the crankshaft position sensor but not sure? My fuel injectors look in decent shape however there was some build up on the outside of them gunk from dirt and oil build up but the car seems to run fine for 10 minutes or 20 minutes with no loss and power it just dies out all the sudden what could be causing this?

What makes this problem better or worse?

Just letting the car sit for 10 minutes or so

How long has your 2007 Pontiac Grand Prix had this problem?

A week