I having a problem with stalling When the truck is warm and at idle( lights, stop signs,.ect. ) Took the truck to the local shop. they cleaned the throttle body and performed an adaptive memory clear/reset. They finally told me that the problem is to intermittent to diagnose. Today i got off they highway the truck was fine. I then filled the tank, when I went to leave the truck stalled out several times. after 8 hours of work drove home, got off the highway experienced no problems at all. Could this be fuel problem?? or possibly an intake gasket gone bad?? ( I am tempted to replace the fuel pump) Truck has had a tune up recently also. Do you think i should get a second opinion from a another shop?? not sure what to do now?? thanks for your help!!