Q: turn car off and come back and will not crank on 2001 Cadillac DeVille

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
happens about once every 3 months, car runs great. turn key on and all lights on dash work but have noticed that when the car does not start the fuel gauge does not move when the key is first turned to the on position. Have been able to let the car sit for about 45 minutes and then it will start-- very weird-- anyone else had this problem. Took car to dealer and after 3 days they said they could find nothing wrong, Did it again today 1-2-11. Don't know what to do.
(1) Answer