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Fist step with a Coolant System leak is a good visusl insection....engine COLD. Then we check the coolant level in the plastic overflow jug and fill to the ....Cold....level. next step is to remove the radiator cap for inspection and testing. We then ...top off....the radiator with coolant and pressure test the system cold. We then start her up and pressure test again with engine at normal operating temp. Having said all that...and...assuming you do not have the special equipment needed...about all you can do is what you have already done. You might also check the interior ....front seat floormat areas for a wet carpet....thus checking for a leaking heater core. Consider having a reputable Auto Tech check this out. big money repairs include blown head gasket.....cracks in engine. What engine in this vehicle?

Good morning... Bc I had a water pump replace a few months ago decided to take to the dealership just in case that was the problem since I still had warranty on it... they checked and apparently I will need a radiator due to a small crack... at least that’s what they tell me.. going to have it repacked and go from there... they say everything else works fine.... I guess we will find out... thanks so much for your reply...

Ok...sounds like you made the correct decision. Save your paper work and good luck.