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A common reason for antifreeze leaking in your 2015 Chevy Trax is a radiator leak. You'll likely see the leak under the radiator when your Trax has been idling in one place for a while. The leak shouldn't be coming from under the engine. If it is, it could be due to a faulty hose, water pump, or thermostat housing. Watch your temperature gauge and coolant level closely. If too much coolant leaks out, your Trax could run hot or overheat. Fixing or changing the radiator should be your top priority.
I replaced the coolant tank and both tubes, the large and small ones. There are no leaks, but I need to consistently top up with antifreeze.
My car also doesn't leak any fluids. However, I've had to top up with antifreeze twice since September.
The main reason for coolant leakage in a 2015 Chevy Trax is probably due to problems with the reservoir or hoses.