So the engine on my 2003 Cadillac CTS with V6 - 3.2L vin N 197ci - MFI GAS DOHC engine continues to run after key it turned off and removed. I was able to get the car to shut off buy removing the battery cables. I have an appointment scheduled with my dealer but it isn't for another week. Wondering if anyone has had this happen and what the problem/repair bill was.