Cadillac CTS coolant loss issue with no visible leak source on Cadillac CTS

Some Cadillac CTS owners report experiencing coolant loss without any visible leaks, which can be attributed to several potential issues. These include evaporative loss due to high engine temperatures causing coolant to vaporize, as well as internal engine problems such as worn cylinder walls, radiator issues, or a blown head gasket. Additionally, a faulty radiator cap that fails to seal properly may allow pressurized coolant to escape as steam, contributing to the coolant loss. If owners encounter this problem, it is advisable to have their vehicle inspected by a trusted mechanic to accurately diagnose and address the underlying causes, such as a blown head gasket or internal engine issues.