I have a 03 silverado and i was driving one day and the truck cut out. everything cut out. while rolling i put the truck in neutral and turn the key off and restarted it and it started right up. it has happened once in a while before but today it has happened 4 or five times. i really dont know what could be the problem.

 

If you are saying that the truck just died on you then my guess would be that you are having a fuel pump issue and it is getting ready to stop working all together

 

Try running a bottle of seafoam in the gas tank every fillup
To clean the injectors and get all the other crap outa your tank.