This problem is driving me insane. The truck runs awesome first thing in the morning. After i drive it and get it warmed up it starts to act up. When i pull up to a stop light or a stop sign the truck acts like it wants to stall out. So I'll have to give it a little gas with my other foot on the brake to keep it going but when i take off and clear it out it won't do it again for a little while. It just acts like its not getting enough gas or it's bad gas.I don't know if somethings plugged up, or maybe the throttle positioning sensor is going out. I have no idea what the problem is. If anybody could help me troubleshoot this it would be greatly appreciated.