2003 Cadillac CTS Repair Question
Cadillac CTS Coolant Problem
Check the hose between the coolant jug and the radiator, check the radiator itself, check around the intake and heads. What I recommend doing is to get a pressure tester for the cooling system. It pumps pressure into the radiator and if there is a leak, usually you can find it. Also, they make a dye that can be placed in the coolant that shows up under a black light. That may help.
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