What causes the 2015 chevy spark coolant to leak?

There are several locations within the 2015 Chevy Spark where coolant could leak out. The coolant flows from the radiator into the water pump then into the engine, and into the heater core when the heater is on. It's a closed loop system with many points then between where the coin could leak out. The most common cause is a broken radiator hose, this could either be the upper or lower hose. Overtime the rubber will deteriorate and crack to cause a leak. The next potential causes a faulty water pump or water pump gasket which will allow the coolant to leak. If a head gasket fails current could leak from around the edges of the head. If there is coolant leaking inside the passenger cabin this would mean that the heater core has failed, this would be the most costly repair