My check enigne light came on. A friend suggested that I take it too Autozone and have them run a check on it. Their diagnostic gizmo said that the "Intake manifold runner control is stuck open." Apparently there's two of them and they are both stuck open. I take it to the dealer and they told me it should be safe to drive. On the way home I made a stop and left the truck running. When I get back in and shut the door the check engine light goes off. Can anyone help me on this one? I'm not much of a mechanic. Could it have unstuck? Is it okay to drive? Thanks for any help