Dear XtremeRevolution, I'm turning to you, kindly, for some help, please. My 2012 Cruze LS (1.8L/Auto/28,740 miles) shows a 'check engine' light, with an accompanying radiator fan running at full speed. It exhibits this behavior (permanently), even from a cold (overnight rest) start. The code, I believe, is P0599. ¿May you please, please, tell me, if you are amenable, kindly, if the fix for this is covered under my still active 5yr/100K mile powertrain warranty, please? (I guess I'm trying to save the 'diagnostic' fee [$109+tax], if the fix its NOT covered). Thank you very much. Additionally, your comments, explanations, helps are very valuable to us owners. God Bless you. Don't know on this forum where I could read your answer, should you post one. But my 'handle' is: tdc . Thank you again.