Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
Hi, I am Mike, welcome. I'm reviewing your question.
Are you referring to the engine cooling fan?
Was the engine running too hot when you shut it off?
Did it eventually shut off and how long did it take?
Page 10-14 of your owners manual does say, "An electric engine cooling fan under the hood can start up even when the engine is not running" plus I see the cooling fan relays do have power to them at all times, so with that done said it makes sense the cooling fan/s would still run with the engine off if the engine is too hot.
I would check your coolant level in the morning after it cools down. If it's really low, pressure test the cooling system with a tester and look for the leak and fix.
Did that answer your question? If so, kindly leave me a positive rating, so I get credit. After all, you have already made the deposit.