Sierra wont start!?!

I drove my truck just fine to get something to eat, drove home with out any trouble, 2 hours later it wont start. it turns over just never catches. I will try to put video up if that will help. does any one have any ideals?
97 sierra 5.7 ltr v8 z1

And what truck/engine/year are we discussing? Do you have spark and fuel or fuel pressure, post back with some appropriate info for help.

Last year I experienced a similar occurrence with my '97 Chevy Z71. I drove to work one morning with no problems when I got in the truck to go home it would not start. Although it did turn-over, it just would not start.

After many attempts I decided to turn the key to the on position and listen to see if the fuel pump kicked on. I was not suprised to find out it did not come on. I had suspected that the pump was the problem.

I had it towed and a local shop put a new Delco pump in for about $380.00