Hey everybody, long time lurker, first time poster. I wanted to get ya'lls opinion on an issue I'm having. Recently the fan has been staying on for the whole drive in my cummins. I guess the fan clutch never disengages. It sometimes does it intermittently, but this week it has been on permanently for 3 days straight. I'm about to lose my mind it is so dang loud and obnoxious. Also, the MPG is suffering. Anybody ever had this happen? I have an appt at the dealer on Monday, but I'm worried they are going to blow me off and say "it's supposed to be on when its hot out" etc.