Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
Hello I will help you with your question,
I am sorry to have to tell you that the overheating and the air in the cooling system are coming from the same place. Your head gaskets have failed and will need to be replaced but the reason they failed may lead you to move to another car.
The head bolts on this engine are known to pull their threads out of the cylinder block and the head gasket fails. To repair it is north of $5000.
Please let me know what I can do to help you with your questions