2001 Deville Stalling problem

[getzie]

I've owned the car for 2 1/2 years and it stalls every month or so. The crankcase sensors have been changed 7 times and many other parts. Cadillac has warranted all of this but the problem is it is never fixed. It seems to stall in hot weather and mostly when you are parking or turning the wheel to park or pull out. When you try to restart it sometimes it will start and then others you have to wait a long time. The last time I had to get it started, put it in gear real quick and push the gas pedal half way while using the break. Then as soon as I let up it stalled again. The next day it is fine and this is how it goes. Any suggestions??