Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
It sounds as though you are still battling air in the system. These cars can be very stubborn to get all of the air out..
The best way to get it all out is to now let it cool down overnight...
Give it a full cool down cycle and let me know if you continue to have problems...
Just be sure that the coolant reservoir is full and drive it...
All air should bleed out of the cooling system and be replaced by coolant..
If you run into more problems, please, let me know