Where is the location of engine block coolant drain on 2000 1.6 L Chevy Tracker?

There isn't a dedicated engine block drain plug on a 2000 Chevy Tracker 1.6L. To drain the coolant, you need to drain it from the radiator's drain petcock (located at the bottom of the radiator) and then open the coolant reservoir to allow air into the system for a complete drain.