Cadillac CTS overheating issue on Cadillac CTS

Some Cadillac CTS owners report experiencing overheating issues that can lead to significant engine damage if not addressed promptly. Common causes of overheating include problems with the water pump, thermostat, coolant levels, and airflow, with insufficient coolant levels being a frequent contributor. Owners have noted that if the CTS overheats while not moving, it may indicate airflow or coolant level issues, while thermostat malfunctions can cause overheating even at highway speeds. Additionally, when replacing components like the water pump or radiator, it is crucial to avoid introducing air into the cooling system to prevent further overheating problems. Some owners also consider upgrading to a radiator with a thicker core, such as the CTS-V 1" thick core radiator, for improved cooling performance. Proper maintenance and timely troubleshooting are essential to ensure the vehicle's optimal performance and longevity.