1999 Chevy Blazer where is the hose from overflow tank supposed to go?

The hose from the overflow tank on a 1999 Chevy Blazer should be connected to the radiator. The radiator is located in the front of the engine compartment, and the overflow tank is typically located on the side of the engine compartment. The hose connects the two, allowing excess coolant to flow from the overflow tank back into the radiator.