I was driving to work the other day, and I stopped at a stop sign and when i stepped on the gas my truck quit. I turned it back on and it started right up i stepped on the gas and it quit again (i did that about 4 times...) So i popped it in reverse this time to turn around it died on me when i stepped on the gas, i figured i'd try a new route to it and i let it roll back in reverse for a little bit and then i stepped on the gas and it kept running so i got my truck turned around and i let it roll forward in drive then stepped on the gas and i didn't have a problem, i guess it's when i come to a complete stop (kind of a problem on a hill....) what do you think is going on?