I have a 2000 Jeep Grand Cherokee and the engine just died while I was driving it. I let it set for about 15 minutes and it started right up. I turned it off and now it won't start again.

You should have it scanned for any engine codes. Common problem with the jeeps are the crank positioning sensors. If you don't have access to a scan tool. Let it run until it cuts out. Then check and see if you lost spark, if no spark then follow trouble shooting guide for that, odds are you will be replacing crank sensor but could be other things. Process of elimination. Good luck

Can be 50 things, dont listen to the guessing guys here.
so you going to pull the the tank on a whim , soaked in gas, and 4 hours hard labor. to find out car needed a tuneup.

wow.
there are 50 reasons for a no start.
guessing is silly.
do you want to gue$$ or do simple tests.

and i hear no sounds so.... cant say.....

Sounds like a fuel pump. Some times when the pump is getting ready to quit it will work intermittently and then quit entirely.