The pressure in the hot water channel of Cruze heater is too high, which leads to the burst of water phase.

There are two reasons why the vehicle heating system is not hot: one is caused by the engine cooling system, and the other is caused by the poor operation of the heating control mechanism. The warm air of the car is blown into the cab by the blower. If the air volume is insufficient or the distribution of cold and hot air is not good, the heat of the warm air tank will not be radiated, and the temperature of the warm air will not come up. At this point, first check whether the filter element is dirty or blocked, clean it, and replace it in time if necessary. Then check the operation of each gear of the blower, and each gear must reach sufficient speed. If the knob is set to the warm air position, the air volume is large enough and the wind direction is normal, and the cold air is blown out, check whether the cable of the hot and cold air control flap in the warm air box falls off, whether the warm air impeller is damaged, whether the flap falls off, etc. After troubleshooting, the warm air will get hot.