Car stalls when warm. Wont restart until completely cooled off

What is your question?

2005 buick ranier cxl v8 Car will start when cold. If left to sit and idle.. It will do so for about an hour. Then it will stall and not restart until completely cold. Have replaced the map sensor, crankshaft position sensor, throttle body and tps, fuel pump relay.. Cleaned the maf with elextronics cleaner.. It still does it.. I'm at my wits end with this stupid car.. No codes either btw... Runs perfectly until it stalls.

What makes this problem better or worse?

When at operating temp

How long has your 2005 Buick Rainier had this problem?

Couple weeks now