Is there coolant drain plug on a ecotec engine?

Yes, Ecotec engines typically have a coolant drain plug, which is used to drain the engine coolant from the system for maintenance or repairs. The location of the drain plug can vary depending on the specific model and year of the engine. It's usually located at the bottom of the engine block or near the water pump. Always consult the vehicle's service manual for precise details regarding your specific Ecotec engine model.